TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 1.
What is meant by coaxial cables?
Answer:

  1. The coaxial cable got its name by the word coax it is a geometric word where the axis between the insulator and the shield.
  2. Here the shield is meant the copper inside the cable.

Question 2.
Write the some of the Coaxial cable names.
Answer:
Some of the coaxial cable names are Media Bridge 50-feet Coaxial Cable, Amazon basics CL2-Rated Coaxial Cables etc.,

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 3.
What is the main uses fibre optics cable?
Answer:

  1. Fibre optics cable is of strand’s of glass and pulse of light is used to se i d the information.
  2. They are mainly used in Wide Area Network (WAN). The WAN is a network that extends to very large distance to connect the computes.

Question 4.
What is Dongles?
Answer:
The Dongle is a small peripheral device which has a compatible of mobile broadband with a sim slot in it and connects the Internet and acts as a modem to the computer.

Question 5.
Write the uses of different version in USB.

  1. USB 2.0 has 480 Mbps.
  2. USB 3.0 has the data transfer rate 4.85 Gbps.
  3. Micro USB is a miniaturized version of the USB used for connecting smart phones.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 6.
What is null modem able?
Answer:
The parallel cables are used to connect to the printer and other disk drivers. RS232 is one type of serial cable, also known as Null modem cable.

Question 7.
What is Ethernet cables?
Answer:
Ethernet cable is the most common type of network cable mainly used for connecting the computers or devices at home or office.

Question 8.
What is the main purpose of the Ethernet cables?
Answer:
The main purpose of the Ethernet cables connects wired devices within the Local Area Network (LAN) for sharing the resources and accessing Internet.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 9.
What is Crossover Ethernet Cable?
Answer:
The Crossover Ethernet cable is an example of the Null modem cables. This cable is used to join two computers or two network devices of the same type.

Question 10.
Write the some types of Wired media in network.
Answer:
Computers can be connected on the network with the help of wired media. They are Unshielded Twisted Pair, Shielded Twisted Pair, Co-axial Cables and Optical Fibre.

Question 11.
Write the some types of Wireless media in networking?
Answer:
Wireless media are Infra Red, Bluetooth, WiFi etc.,

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 12.
What are the components are used in the Ethernet cables?
Answer:

  1. Patch Cable (Twisted Pair),
  2. RJ45 Connector,
  3. Ethernet ports,
  4. Crimping Tool.

Question 13.
What is difference between Wired and Wireless networks?
Answer:

Wired Network  Wireless Network
Wired networks for larger area are more expensive.  Wireless networks for larger area are less expensive and more comfortable.
Wired networks are still used widely in the offices where need increased speed and secure connections.  Wireless networks enable more devices                including mobiles sharing the resources and Internet connections remotely.

Question 14.
Write a note on Patch cable.
Answer:

  1. Patch cable are generally made up of 8 wires in different colours. Four of them are solid colours, and the others are striped.
  2. The eight colours are White green, Green, White orange, Blue, White blue, Orange, White brown, and Brown.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 15.
What is RJ45 Ethernet connector?
Answer:
RJ45 Ethernet connector is a small plastic cup which will be used to connect the wire inside the connector and ready to use to connect the Internet.

Question 16.
Expand RJ45.
Answer:
The RJ45, “RJ” stands for the Registered Jack and the “45” simply refers to the number of interface standard in the cable.

Question 17.
What is meant by coaxial cables?
Answer:

  1. The coaxial cable got its name by the word coax it is a geometric word where the axis between the insulator and the shield.
  2. Here the shield is meant the copper inside the cable.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 18.
Write the some of the Coaxial cable names.
Answer:
Some of the coaxial cable names are Media Bridge 50-feet Coaxial Cable, Amazon basics CL2-Rated Coaxial Cables etc.,

Question 19.
What is the main uses fibre optics cable?
Answer:

  1. Fibre optics cable is of strands of glass and pulse of light is used to se id the information.
  2. They are mainly used in Wide Area Network (WAN). The WAN a network that extends to very large distance to connect the computers.

Question 20.
What is Dongles?
Answer:
The Dongle is a small peripheral device which has a compatible of mobile broadband with a sim slot in it and connects the Internet and acts as a modem to the computer.

Question 21.
Write the uses of different version in USB.
Answer:

  1. USB 2 0 has 480 Mbps.
  2. USB 3.0 has the data transfer rate 4.85 Gbps.
  3. Micro USB is a miniaturized version of the USB used for connecting smart phones.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 22.
What is null modem cable?
Answer:
The parallel cables are used to connect to the printer and other disk drivers. RS232 is one type of serial cable, also known as Null modem cable.

Question 23.
What is Ethernet cables?
Answer:
Ethernet cable is the most common type of network cable mainly used for connecting the computers or devices at home or office.

Question 24.
What is the main purpose of the Ethernet cables?
Answer:
The main purpose of the Ethernet cables connects wired devices within the Local Area Network (LAN) for sharing the resources and accessing Internet.

Question 25.
What is known as 8P8C Connector?
Answer:

  1. The RJ45 Connector has eight pins and connected to each end of the Ethernet cable.
  2. It has 8-Position, 8-Contact modular plug, so it is also known as 8P8C connector.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 26.
What are wiring schemes available in RJ45?
Answer:

  1. Wiring schemes specifies how the wires to be connected with RJ45 connector.
  2. There are two wiring schemes available to terminate the twisted-pair cable on each end, which are T-568A and T-568B.

Question 27.
What are the usage of four pairs wires in RJ45 Connector?
Answer:
Four pairs of wires are available in the cable, Ethernet uses only two pairs Orange and Green. The other two colors blue and brown can be used ISDN or Phone connections.

Question 28.
What is an Ethernet Card?
Answer:
An Ethernet card is a Network Interface Card (NIC) that allows computers to connect and transmit data to the devices on the network.

Question 29.
Where can you found in Ethernet Port?
Answer:
Ethernet port is found on personal computers, laptops, routers, switches, hubs and modems.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 30.
What is the use an Ethernet dongles?
Answer:

  1. Some of them not having an Ethernet port use an Ethernet dongles to form a network with other devices.
  2. Devices or Computers which use WiFi only for networking eliminates both the cable and its port.

Question 31.
How can to find the Internet is connected?
Answer:

  1. When inject the plug into the port the two lights will glow in the computer, the one is green and another one is orange.
  2. The orange light will start blinks then it means the Internet is connected.

Question 32.
What is Crimping?
Answer:
Crimping is the process of joining two or more pieces of metal or wire by deforming one or both of them to hold each other.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 33.
What is Crimping Tool?
Answer:

  1. The crimping tool is a physical tool which is to connect the patch wire and the Ethernet connector.
  2. The crimping tool looks like a small cutting handle with two mold of Ethernet port.

Question 34.
What is Registered Jack?
Answer:
A Registered Jack commonly known as RJ is a network interface used for network cabling, wiring and Jack construction.

Question 35.
What is the primary function of the Registered Jack?
Answer:
The primary function of the Registered Jack is to connect different data equipment and telecommunications devices.

Question 36.
What are commonly known Registered Jacks?
Answer:
The commonly known Registered Jacks are RJ-11, RJ-45, RJ-21, and RJ-28.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 37.
What registered jacks refers when its wiring?
Answer:
The registered jack refers to the male physical connector (Plug), a female . physical connector (Jack) and its wiring.

Question 38.
Write short note on RJ-14 and RJ-61.
Answer:

  1. The RJ-14 is the same as RJ-11 which will be used for telephone lines where same it as 6 pins whereas the RJ-61 will have 8 pins.
  2. This RJ-61 will use the twisted pair cable with a modular 8 connection.

Question 39.
What is Amphenol?
Answer:
The Amphenol is a connector manufacturer. They manufactured RJ-21 connector. It has 50 pins with 25 pins at one end and 25 pins at the other end.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 40.
What are the types of wiring techniques to construct the Ethernet Cable?
Answer:
There are three types of wiring techniques to construct the Ethernet cable. It is also known as coding techniques. They are,

  1. Straight-Through Wiring
  2. Cross-Over Wiring
  3. Roll-Over Wiring

Question 41.
What is known as Rollover Cable?
Answer:

  1. Rollover cable is also known as yost cable or console cable.
  2. It is typically flat (and light blue color) to distinguish it from other types of network cabling.

Question 42.
What is USB?
Answer:
USB is Universal Serial Bus, it connects all the peripheral devices with the computers.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 43.
What is WWW?
Answer:

  1. WWW (World Wide Web) definition comes from the World Wide Web Consortium (W3C).
  2. The World Wide Web is the universe of network – accessible information, an embodiment of human knowledge.

Question 44.
Write the usage of UTP and STP.
Answer:
UTP (Unshielded Twisted Pair) is used nowadays as modem cables for Internet and they are lower in cost and installation and maintenance is easy compared to the coaxial cables.
STP (Shielded Twisted Pair) is similar to UTP, but it is covered by an additional jackets to protect the wires from external interference.
These cables which are twisted to ignore electromagnetic interference.

Question 45.
What are the main uses of fiber optics cable?
Answer:

  1. The fiber optics cable is of glass and pulse of light is used to send the information.
  2. They are mainly used in Wide Area Network (WAN). The WAN is a network that extends to very large distance to connect the computers.
  3. The fiber optics cables are placed in deep underground to avoid any damage to the cables.
  4. The optic cable uses light to transmit the information from one place to another.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 46.
What are the different industrial standards Ethernet cables?
Answer:

  1. Ethernet cables are normally manufactured in several industrial standards such as Cat 3, cat 5, cat 6, cat 6e, and cat 7.
  2. ‘cat’ simply stands for category, and the following number indicates the version.
  3. Latest version denotes faster and higher frequencies, measured in Mhz.
  4. Increasing the size of the cable also lead to slower transmission speed.

Question 47.
Briefly details of the pin details in the Ethernet ports.
Answer:

  1. The Ethernet ports, the pin 1 shows the transmission positive, the pin 2 shows the transmission negative, the pin 3 shows the receiver positive.
  2. The pin 4 shows the reserved position it is nothing but tells the connection . for some other use.
  3. The pin 5,7,8 are also used as reserved position.
  4. The pin 6 shows the receiver negative.
  5. The two main signals of the pins, the one is the TX which is transmission of data and RX which is receiver of data.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 48.
Write the short note on Expansion card.
Answer:
Expansion card is a separate circuit board also called as PCI Ethernet card which is inserted into PCI slot on motherboard of a computer. Now a days Expansion card is built in type come with Ethernet cards which resides on motherboard. Wireless Ethernet cards are also available, which uses radio waves to transmit data.

Question 49.
Write the Alternative names for networking devices or Technology.
Answer:

Devices or Technology  Alternative Names
Ethemet Technology  RJ45, 802.3 (According to IEEE)
RJ45 Connector (Male)  RJ45 plug, Ethemet connector, 8P8C connector.
RJ45 socket (Female)  RJ45 Jack, Ethemet port
RJ45 cable  Ethemet cable

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 50.
Write a short note on RJ-11 Registered Jack.
Answer:
RJ-11 is the most popular modem form of Registered Jack. It is found in home and office. RJ-11 is mainly used in telephone and landlines. RJ-11 has 6 pins. Where the two pins give the transmission configuration, the two pins give the receiver configuration and the other two pins will be kept for reserved. The two pin will have the positive terminal and the negative terminal.

Question 51.
Define Straight – Through wiring.
Answer:
The Ethernet cables used for ethemet connections are straight-through cables. These cable wires are in the same sequence at both ends of the cable, which means that pin 1 of the plug on one end is connected to pin 1 of the plug on the other end. The straight – through wiring cables are mostly used for connecting PC / NIC card to a hub. This is a simple physical connection used in printers, computers and other network interfaces.

Question 52.
Explain Cross – Over Wiring.
Answer:

  1. A cable to connect two computers or Ethernet devices directly together without a hub, then you will need to use a cross-over cable.
  2. The pairs (TX and RX lines) will be crossed which means pin 1 and 2 of the plug on one end are connected with pin 3 and 6 of the plug on other end, and vice versa.
  3. The easiest way to make a crossover cable is to make one end to T-568A color coding and the other end to T-568B.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 53.
Explain Roll-Over Wiring.
Answer:

  1. Roll over is a type of null-modem cable that is often used to connect a device console port to make programming changes to the device.
  2. The roll over wiring have opposite pin arrangements, all the cables are rolled over to different arrangements.
  3. The roll over cable, the coloured wires are reversed on other end. That is the pins on one end are connected with other end in reverse order.

Question 54.
How to determine the type of Ethernet cables?
Answer:

  1. Straight – through:
    The coloured wires are in the same sequence at both ends of the cable.
  2. Cross – Over:
    The first coloured wire at one end of the cable is the third coloured wire at the other end of the cable.
  3. Roll – Over:
    The coloured wires are in the opposite sequence at either end of the cable.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 55.
Discuss about wiring schemes with colour codes of the connector.
Answer:
There are two wiring schemes available to terminate the twisted-pair cable on each end, which are T-568A and T-568B.
The pinouts and colour coding of these schemes.

TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling 1

TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling 2

Question 56.
Explain the Tx transmission of data and Rx receiver of data in the pin position details using colour codes of the connector.
Answer:

TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling 3
The Ethernet wiring schemes (T568 A & T5698)
From the first figure,

(i) The position of pin 1:
It describes the transmit data. It can be sent to both connection with the Tx (positive). Tx + is used in this position is white green.

(ii) The position of pin 2:
It describes the transmit data. The Tx has negative terminal and the color is used in the position is Green.

(iii) The position of pin 3:
The Rx is compatible to receive the data which has positive terminal and the color is used in this position is white orange.

(iv) The position of pin 4:
There will be no transmitting or receiving will exist. The color used in this pin is blue.

(v) The position of pin 5:
It is not connected or bidirectional and the color is white blue.

(vi) The position of pin 6:
Here, the Rx negative which has a negative terminal and the color used in this position is orange.

(vii) The position of pin 7:
It is not connected or bidirectional and the color is white brown.

(viii) The position of pin 8:
It is not connected or bidirectional and the color is brown.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 57.
Write the steps of crimping process for making Ethernet cables.
Answer:

  1. Cut the cable with desired length.
  2. Strip the insulation sheath about 1 inch from both end of the cable and expose the twisted pair.
  3. Untwist the smaller wires and arrange them into the proper wiring scheme, T568B preferred generally.
  4. Bring the wires tighter together and cut them down so that they all have the same length.
  5. Use the crimping tool to lock the RJ45 Connector on the cable. It should be strong enough to handle manual traction.
  6. Use a cable tester to verify the proper connectivity of the cable, if need.

Question 58.
Write about history of Internet.
Answer:

  1. Bob Metcalfe invented Ethernet in 1973.
  2. It was used for interconnecting advanced computer work stations, making it possible to send data to one another and to high-speed laser printers.
  3. Metcalfe and others then finalized an open Ethernet standard in 1980, and by 1985 it had become an IEEE standard.
  4. An Industry was bom, and Ethernet was ready for its meteoric rise.
  5. There have been a number of networking standards published in the 802 branch of the IEEE, including the 802.3 Ethernet and 802.5 Token Ring standards.
  6. However, most people still use the Ethernet name when referring to the network system described in the 802.3 standard.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 59.
Write a note on twisted pair cable.
Answer:

  1. Twisted pair cable is type of cable with two or more insulated wires twisted together.
  2. There are two types of twisted pair cables, Unshielded- Twisted Pair (UTP) and Shielded Twisted Pair.(STP)

Question 60.
What are the uses of USB cables?
Answer:

  1. USB (Universal Serial Bus) are used to connect keyboard, mouse and other peripheral devices.
  2. There are some special network devices used to connect the Internet through the USB called dongles.

Question 61.
Write a note on the types of RJ45 connector.
Answer:

  1. The RJ45 (Registered Jack 45) Ethernet connector is a small plastic cup which will be used to connect the wire inside the connector and ready to use to connect the Internet.
  2. The RJ45 connector looks similar like a telephone jack but it looks a slightly wider. The Ethernet cables are sometimes called as RJ45 cables.

Question 62.
What is an Ethernet port?
Answer:

  1. Ethernet port is an opening which is a part of an Ethernet card. It accepts RJ45 connector with Ethernet cable.
  2. Now, most of the computers and laptops have a built- in Ethernet port for connecting the device to a wired network.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 63.
What is the use of Crimping tool?
Answer:

  1. The crimping tool is a physical tool which is used to connect the patch wire and the Ethernet connector.
  2. The crimping tool will puncture the connector and makes the wire set in the connector. Use the crimping tool to lock the RJ45 connector on the cable.

Question 64.
What are the types of twisted pair cables?
Answer:

  • Unshielded Twisted Pair (UTP) and
  • Shielded Twisted Pair (STP)

Question 65.
What is meant by champ connector?
Answer:

  1. The RJ-21 connector has 50 pins with 25 pins at one end and 25 pins at the other end. It is also called as champ connector or Amphenol connector.
  2. The Amphenol is a connector manufacturer. The RJ21 interface is typically used for data communication trucking application.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 66.
Write a note on crossover cables.
Answer:

  1. The crossover cable is an example of the Null modem cables. This cable is used to join two PCs or two network devices of the same type.
  2. Crossover cable is the sophisticated Ethernet cable used to connect the Internet to the system. This cable works at a speed of 10 gbps and more.
  3. The Ethernet crossover cable is identical on both the ends.
  4. Nowadays Routers are being connected through the crossover cables to provide wireless network from the local network.

Question 67.
Write a short note on RJ45 connector.
Answer:

  1. The RJ45 (Registered Jack) Ethernet connector is a small plastic cup which will be used to connect the wire inside the connector and ready to use to connect the Internet.
  2. The RJ45 connector looks like a telephone jack but it looks a slightly wider.
  3. The Ethernet cables are sometimes called as RJ45 cables. In RJ45 the V ‘RJ’ stands for the Registered Jack and the ‘45’ simply refers to the number of interface standard in the cable.
  4. RJ45 connector has eight pins and it has 8 – Position, 8 – Contact (8P8C) modular plug. It is also known as 8P8C connector.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 68.
What are the differences between serial and parallel ports?
Answer:

Serial Port

 Parallel Port

The serial port will send 1 bit at one time.  The parallel port will send 8 bit at one time.
A serial port is a type of interface found on computers for connecting peripherals and Internet to the system.  A Parallel port is also type of interface found on computers for connecting peripherals and Internet to the system.
It have been newer technologies such as Ethernet, Fireware and USB which transfers the data serially.  These ports transfer data in parallel and it have been used Zipdrives, Scanners, External modems, audio cards, Web cams, hard disk, CD Roms etc.,
RS232 is one type of serial cable, also known as Null modem cable. The parallel port allows for a one – way transmission of data from the source to a secondary device, such as a printer.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 69.
What is meant by null modem cable?
Answer:

  1. The crossover cable, RS – 232 cable is also used for interconnecting two computers without modem. So it is also a Null modem cable.
  2. A cable interconnecting two devices directly is known as a null modem . cable.
  3. Null modem cable is a communication method to directly connect two DTEs (computer, terminal, printer etc.,) using on RS – 232 serial cable with a null modem connection the transmit and receive lines are crosslinked.
  4. Depending on the purpose, sometimes also one or more handshake lines are crosslinked.

Question 70.
What are the components involved in Ethernet cabling?
Answer:
Ethernet cabling is the process of connecting the computers with other devices using Ethernet cables. The four main components are involved in the Ethernet cabling components are:
(i) Patch Cable (Twisted pair):
These are generally made up of 8 wires in different colors. Four of them are solid colours, and the others are striped.

(ii) RJ45 Connector:
It has eight small pins inside to connect eight small wires in the patch cable. The eight cables has eight different colours.

(iii) Ethernet ports:
It is the jack where the Ethernet cable is to be connected.

(iv) Crimping Tool:
It is a physical tool which is used to connect the patch wire and the Ethernet Connector (RJ45).

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 71.
What are the types of Fibre optic cables?
Answer:
There are two types of fibre, optic cables available, they are
(i) Single – mode (100 Base BX): A single mode cables are used for long distance transmission and at a high cost.
(ii) Multimode (100 Base SX): The Multimode cables are used for short distance transmission at a very low cost. The optic cables are easy to maintain and install.

Question 72.
What is meant by Registered Jack? Explain briefly the types of Jacks.
Answer:

  1. A Registered Jack commonly known as RJ is a network interface used for network cabling, wiring and jack construction.
  2. The primary function of the registered jack is to connect different data equipment and telecommunications devices.
  3. The commonly known registered jacks are RJ-11, RJ-45, RJ-21, and RJ-28.
  4. RJ-11: It is the most popular modem form of registered jack. This registered jack is mainly used in telephone and landlines.
  5. RJ-14 and RJ-61: The RJ – 14 is the same as RJ-11 which will be used for telephone lines where same it as 6 pins whereas the RJ-61 will have 8 pins.
  6. RJ-21: The RJ-21 connector has 50 pins with 25 pins at one end and 25 pins at the other end. It is also called as champ connector or Amphenol connector manufacturer. The RJ-21 interface is typically used for data communication trucking applications.
  7. The Registered Jack refers to the male physical connector (plug), a female physical connector (Jack) and its wiring.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 73.
Explain wiring techniques used in Ethernet cabling.
Answer:
There are three types of wiring techniques to construct the Ethernet Cable. It is also known as color coding techniques. They are:

(i) Straight – Through Wiring:
In general, the Ethernet cables used for Ethernet connections are straight through cables. These cable wires are in the same sequence at both ends of the cable, which means that pin 1 of the plug on one end is connected to pin 1 of the plug on the other end.

The straight throw wiring cables are mostly used for connecting PC / NIC card to a hub. This is a simple physical connection used in printers, computers and other network interfaces.

(ii) Cross – Over Wiring:
A cable to connect two computers or Ethernet devices directly together without hub, then you will need to use a crossover cable.

The pairs (TX and RX lines) will be crossed which means pin 1 and 2 of the plug on one end are connected with pin 3 and 6 of the plug on other end, and vice versa (3 and 6 to pin 1 and 2)

(iii) Roll – Over Wiring:
Roll over cable is a type of null-modem cable that is often used to connect a device console part to make programming changes to the device.

The roll over wiring have opposite pin arrangements, all the cables are rolled over to different arrangements.
In the rollover cable, the pins on one end are connected with other end in reverse order, (i.e., pin 1 to 8, 2 to 7, 3 to 6, 4 to 5, 5 to 4, 6 to 3, 7 to 2,8 to 1).

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 74.
Explain about RJ45 connector.
Answer:

  1. The RJ45 Ethernet connector is a small plastic cup which will be used to connect the wire inside the connector and ready to use to connect the Internet.
  2. The RJ45 connector looks similar a telephone jack but it looks a slightly wider.
  3. The Ethernet cables are sometimes called as RJ45 cables. In RJ45 the “RJ” stands for the Registered Jack and the “45” simply refers to the number of interface standard in the cable.
  4. Each RJ45 connector has eight pins and connected to each end of the Ethernet cable. Since it has 8 – Position, 8 – Contact (8P8C) modular plug. It is also known as 8P8C connector.
  5. The RJ45 connector has eight small jack inside to connect eight small wires of the patch cable. The eight cables are in eight different colours.
  6. The RJ45 has four pairs of wires are available in the cable, Ethernet uses only two pairs orange and green. The other two colors (blue and brown) can be used ISDN or Phone connections.
  7. The commonly known Registered Jacks are RJ-11, RJ-45, RJ-21, and RJ-28. The Registered Jack refers to the male physical connector (plug), a female physical connector (Jack) and its wiring.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 75.
Explain the components used in Ethernet cabling.
Answer:
The four main components are used in the Ethernet cabling components are:
(a) Patch cables:
Patch cables are generally made up of 8 wires in different colours. Four of them are solid colours, and the others are stripped. The eight colours are white green, green, white orange, blue, white blue, orange, white brown and brown.

(b) RJ45 Connector:
(i) RJ45 connector looks similar like a telephone jack but it looks a slightly wider. The Ethernet cables are sometime called as RJ45 cables.
(ii) In RJ45 the “RJ” stands for the Registered Jack and the “45” simply refers to the number of interface standard in the cable.
(iii) The RJ45 Ethernet connector is a small plastic cup which will be used to connect the wire inside the connector and ready to use to connect the Internet.

(c) Ethernet card and Port:
(i) Ethernet card and port is a .Network Interface Card (NIC) that allows computers to connect and transmit data to the devices on the network.
(ii) Wireless Ethernet cards are also available, which uses radio waves to transmit data.
(iii) Ethernet port is an opening which is a part of an Ethernet card. It is found on personal computers, laptops, routers, switches, hub and modems.

(d) Crimping Tool:
(i) Crimping tool is the process of joining two or more piece of metal or wire by deforming one or both of them to hold each other.
(ii) The crimping tool is a physical tool which is used to connect the patch
wire and the Ethernet connector.
(iii) The crimping tool looks like a small cutting handle with two mold of Ethernet port.
(iv) The tool will puncture the connector and makes the wire set in the connector.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 76.
Explain the types of network cables.
Answer:
There are many types of cabling available in the networking. Here we discuss about six different cables.

(a) Coaxial Cables:
(i) The coaxial cable is used to transfer the information in a lOmbps. The cable is divided into thinnet and thicknet cables.
(ii) These cables have a copcer wire inside and insulation is covered on the top of the copper wire to provide protection to the cable.
(iii) Nowadays, coaxial cables are used for dish TV where the setup box and the Television is connected using the coaxial cable only.

(b) Twisted Pair cables:
(i) Twisted pair cables are type of table with two or more insulated wires twisted together.
(ii) The twisted cable has 8 wires which are twisted to ignore electromagnetic interference.
(iii) Therearetwotypesoftwistedpaircables,UnshieldedTwistedPair(UTP)and Shielded Twisted Pair (STP).
(iv) The UTP is used now a days as modem cables for Internet and they are lower in cost and installation and maintenance is easy compared to the coaxial cables.

(c) Fibre Optics:
(i) Fibre optics cable is a strands of glass and pulse of light is used to send the information.
(ii) It is used in Wide Area Network (WAN), these cables are placed in deep underground to avoid any damage to the cables. The optic cable are easy to maintain and install.

(d) USB Cables:
(i) The USB (Universal Serial Bus) cables are used to connect keyboard, mouse and other peripheral devices.
(ii) There are some special network devices used to connect the Internet through the USB called dongles.

(e) Serial and Parallel cables:
(i) The serial and parallel interface cables are used to connect the Internet to the system before 1980s and 1990s.
(ii) The serial port will send 1 bit at one time whereas the parallel port will send 8 bits at one time. The parallel cables are used to connect to the printer and other disk drivers.

(f) Ethernet Cables:
(i) Ethernet cable is the most common type of network cable mainly used for connecting the computers or devices at home or office.
(ii) This cable connects wired devices within the Local Area Network (LAN) for sharing the resources and accessing Internet.
(iii) The crossover Ethernet cable is an example of the Null Modem Cables. This cable is used to join two PCS or two network services of the same type.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 77.
Make your own crossover cable.

A. Purchase the following:
Answer:
(i) a patch cable (UTP cat 5e / 6) with desired length.
UTP CAT 5e or CAT 6 is available in electrical shops or Online providers. CAT 6 has higher performance than CAT 5e.

(ii) RJ45 Connector (8P8C modular plug) of both wiring schemes (T568A and T568B):
RJ45 connector for CAT 5e or CAT 6.

(iii) Crimping Tool:
RJ45

B. Construct the cable using the method described in the text book, with the help of crimping tool.
Answer:
The purpose of a crossover Ethernet cable is to directly connect one computer to another computer without going through a router, switch or hub.
(i) Cut into plastic sheath about 1 inch from end of the cut cable.
(ii) Unwind and pair the similar colors.
(iii) Pinch the wires and straighten them.
(iv) Carefully push all 8 unstripped colored wires into the connector. Note how the wires go all the way to the end.
(v) Carefully, place the connector into the Ethernet crimper and down on the handles directly.
(vi) When we remove the cable from crimmer tool, the cable is ready to use.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 78.
Connect two computers using crossover cable for sharing resources.
Answer:
(i) Configure IP Addresses:
First, we need to configure static IP address for each computer. Both computers should have IP addresses on same subnet.
Eg: IP address for computer 1 – 192.168.0.1
IP address for computer 2 – 192.168.0.2
Technically leave the “Default Gateway” and “Preferred DNS Server” field blank.

(ii) Crossover Cable:
A standard crossover cable where green and orange pairs are swapped and brown and blue pairs stay in same position.

(iii) Local user accounts:
Create user account on each computer that has same name and same password.

(iv) Disable Firewalls:
Disable the firewall on both computers to ensure that none of the file sharing ports can be blocked.
Control panel → Windows Firewall → Click off.
Finally, Two computers can access each other Start → Type “cmd” → type “Ping followed by IP address of other computers”.
Now we access “My network places” in window explorer and access other computer for sharing files, we need setup shared folder.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Choose the correct answer:

Question 1.
Who was invented by computer?
(a) Tim Berners Lee
(b) Charles Babbage
(c) Blaise Pascal
(d) John Napier
Answer:
(b) Charles Babbage

Question 2.
Which is used to transfer the information in a 10 mbps?
(a) Coaxial cables
(b) Twisted pair cables
(c) Fibre optics
(d) USB cables
Answer:
(a) Coaxial cables

Question 3.
Which cable is divided into thinnet and thicknet cables?
(a) Coaxial cables
(b) Twisted pair cables
(c) Fibre optics
(d) USB cables
Answer:
(a) Coaxial cables

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 4.
Which cables have a copper wire inside and insulation is covered on the top of the copper wire to provide protection to the cable?
(a) Coaxial
(b) Twisted pair
(c) Fibre
(d) USB
Answer:
(a) Coaxial

Question 5.
Which is type of cable with two or more insulated wires twisted together?
(a) Coaxial
(b) Twisted
(c) Fibre
(d) USB
Answer:
(b) Twisted

Question 6.
How many wires are twisted to ignore electromagnetic interference in Twisted pair cables?
(a) 4
(b) 6
(c) 8
(d) 10
Answer:
(c) 8

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 7.
How many types of twisted pair cables are available?
(a) 2
(b) 4
(c) 6
(d) 8
Answer:
(a) 2

Question 8.
Expansion of STP is:
(a) Strands Twisted Pair
(b) Similar Twisted Pair
(c) Shielded Twisted Pair
(d) Speed Twisted Pair
Answer:
(c) Shielded Twisted Pair

Question 9.
Which cable is of strands of glass and pulse of light is used to send the information?
(a) Coaxial cables
(b) Twisted pair cables
(c) Fibre optics
(d) USB cables
Answer:
(c) Fibre optics

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 10.
Which cable uses light to transmit the information from one place to another?
(a) Coaxial
(b) Twisted pair
(c) Fibre
(d) USB
Answer:
(c) Fibre

Question 11.
Which mode cables are used for long distance transmission and at a high cost?
(a) Open
(b) Close
(c) Single
(d) Multi
Answer:
(c) Single

Question 12.
Which mode cables are used for short distance transmission and at a very low cost?
(a) Open
(b) Close
(c) Single
(d) Multi
Answer:
(d) Multi

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 13.
Which cables are used to connect keyboard, mouse and other peripheral devices?
(a) Coaxial
(b) Twisted pair
(c) Fibre
(d) USB
Answer:
(d) USB

Question 14.
How many bit will send in serial port at one time?
(a) 1
(b) 2
(c) 6
(d) 8
Answer:
(a) 1

Question 15.
How many bit will send in parallel port at one time?
(a) 1
(b) 2
(c) 6
(d) 8
Answer:
(d) 8

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 16.
Which is one type of serial cable and known as Null modem cable?
(a) RS 213
(b) RS 215
(c) RS 231
(d) RS 232
Answer:
(d) RS 232

Question 17.
Which cable is the most common type of network cable mainly used for connecting the computers or devices?
(a) Coaxial
(b) Fibre
(c) Ethernet
(d) USB
Answer:
(c) Ethernet

Question 18.
Which cable is used to connect LAN for sharing the resources and accessing Internet?
(a) Coaxial
(b) Fibre
(c) Ethernet
(d) USB
Answer:
(c) Ethernet

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 19.
Which Ethernet cable is an example of the Null modem cables?
(a) Crossover
(b) Fibre
(c) USB
(d) Serial
Answer:
(a) Crossover

Question 20.
Which are being connected through the crossover cables to provide wireless network from the local network?
(a) Crossover
(b) Fiber
(c) USB
(d) Routers
Answer:
(d) Routers

Question 21.
A cable interconnecting two devices directly is known as:
(a) Crossover
(b) Routers
(c) Null modem
(d) USB
Answer:
(c) Null modem

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 22.
Which cable is the basic component of the Local Area Network?
(a) Crossover
(b) Coaxial
(c) Fiber
(d) Ethernet
Answer:
(d) Ethernet

Question 23.
How many main components are used in the Ethernet cable?
(a) 2
(b) 4
(c) 6
(d) 8
Answer:
(b) 4

Question 24.
Which cables are generally made up of 8 wires in different colours?
(a) Coaxial
(b) RJ45 Connector
(c) Patch cable
(d) Ethernet ports
Answer:
(c) Patch cable

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 25.
Which Ethernet cable is specially designed for making connection between two computers?
(a) Crossover
(b) Fibre
(c) USB
(d) Pointers
Answer:
(a) Crossover

Question 26.
Which Ethernet connector is a small plastic cup that will be used wire inside the connector?
(a) RS-11
(b) RJ-21
(c) RJ-28
(d) RJ-45
Answer:
(d) RJ-45

Question 27.
Which connector is looks similar like a telephone jack but it looks a slightly wider?
(a) RJ-11
(b) RJ-21
(c) RJ-28
(d) RJ-45
Answer:
(d) RJ-45

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 28.
In RJ45 the ‘RJ’ Stands for:
(a) Registered Jack
(b) Reserved Jack
(c) Reverse Jack
(d) Reuse Jack
Answer:
(a) Registered Jack

Question 29.
Which is a Network Interface card that allows computers to connect and transmit data to the devices on the network?
(a) Ethernet card
(b) Crimping Tool
(c) Registered Jack
(d) RJ45 connector
Answer:
(a) Ethernet card

Question 30.
Which is a separate circuit board also called as PCI Ethernet card?
(a) Ethernet card
(b) Expansion card
(c) Registered Jack
(d) RJ45 connector
Answer:
(b) Expansion card

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 31.
Which is the process of joining two or more pieces of metal or wire by deforming one?
(a) Ethernet card
(b) Registered Jack
(c) Crimping Tool
(d) RJ45 connector
Answer:
(c) Crimping Tool

Question 32.
Which is a physical tool and is used to connect the patch wire?
(a) Ethernet card
(b) Registered Jack
(c) Crimping Tool
(d) RJ45 connector
Answer:
(c) Crimping Tool

Question 33.
Expand CSMA/CD:
(a) Carrier Sense Multiple Access with Collision Detection.
(b) Common Sense Many Access with Correct Deductions.
(c) Common Sense Multiple Access with Control Detection.
(a) Carrier Sound Muiupie Access with Collision Default.
Answer:
(a) Carrier Sense Multiple Access with Collision Detection.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 34.
Who was invented Ethernet?
(a) Tim Berners Lee
(b) Charles Babbage
(c) Blaise Pascal
(d) Bob Metcalfe
Answer:
(d) Bob Metcalfe

Question 35.
PARC Expansion of:
(a) Palo Alto Research Center
(b) Post Alto Research Center
(e) Past Alto Research Center
(d) Public Alto Research Center
Answer:
(a) Palo Alto Research Center

Question 36.
What is known as the male physical connector in Registered Jack?
(a) Plug
(b) Jack
(c) Wire
(d) Cable
Answer:
(a) Plug

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 37.
What is known as the Female physical connector in Registered Jack?
(a) Plug
(b) Jack
(c) Wire
(d) Cable
Answer:
(b) Jack

Question 38.
Which one of the following is the most popular modern form of Registered Jack?
(a) RJ-11
(b) RJ-45
(c) RJ-21
(d) RJ-28
Answer:
(a) RJ-11

Question 39.
Which will be used for telephone lines where same it as 6 pins?
(a) RJ-45
(b) RJ-14
(c) RJ-61
(d) RJ-11
Answer:
(b) RJ-14

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 40.
Which will be used the twisted pair cable with a modular 8 connection?
(a) RJ-45
(b) RJ-14
(c) RJ-61
(d) RJ-11
Answer:
(c) RJ-61

Question 41.
Which is called Amphenol Connector? .
(a) RJ-45
(b) RJ-14
(c) RJ-61
(d) RJ-21
Answer:
(d) RJ-21

Question 42.
Which is act as for data communication trucking application?
(a) RJ-45
(b) RJ-14
(c) RJ-61
(d) RJ-21
Answer:
(d) RJ-21

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 43.
How many types of wiring techniques to construct Ethernet cable?
(a) 2
(b) 3
(c) 4
(d) 5
Answer:
(b) 3

Question 44.
Which is known as color coding techniques?
(a) Ethernet
(b) RJ-21
(c) RJ-45
(d) RJ-61
Answer:
(a) Ethernet

Question 45.
Which is used for Ethernet connection are straight through cables?
(a) Ethernet cables
(b) RJ-21
(c) RJ-45
(d) RJ-61
Answer:
(a) Ethernet cables

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 46.
Which is a type of null modem cable?
(a) Straight-through wiring
(b) Cross-over wiring
(c) Roll-over wiring
(d) Ethernet cables
Answer:
(c) Roll-over wiring

Question 47.
Rollover cable is also known as:
(a) Yost cable
(b) Console cable
(c) (a) and (b)
(d) None of these
Answer:
(c) (a) and (b)

Question 48.
Which is coloured wires are in the same sequence at both ends of the cable?
(a) Straight-through
(b) Cross-over
(c) Roll-over
(d) Ethernet
Answer:
(a) Straight-through

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 49.
Which is the first coloured wire at one end of the cable is the third coloured wire at the other end of the cable?
(a) Straight-through
(b) Cross-over
(c) Roll-over
(d) Ethernet
Answer:
(b) Cross-over

Question 50.
Which is the coloured wires are in the opposite sequence at either end of the cable?
(a) Straight-over
(b) Cross-over
(c) Roll-over
(d) Ethernet
Answer:
(c) Roll-over

Question 51.
Match the following:

(A) Coaxial cables  (i) 10 BASE – T Cable
(B) Twisted pair cables  (ii) dongles
(C) Fibre optics  (iii) Copper wire
(D) USB cables  (iv) Strands class

(a) (A) – (iii); (B) – (ii); (C) – (iv); (B) – (i)
(b) (A) – (iii); (B) – (i); (C) – (iv); (D) – (ii)
(c) (A) – (ii); (B) – (i); (C) – (iv); (D) – (iii)
(d) (A) – (ii); (B) – (iii); (C) – (i); (D) – (iv)
Answer:
(b) (A) – (iii); (B) – (i); (C) – (iv); (D) – (ii)

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 52.
Match the following:

(A) Patch cable  (i) Physical Tool
(B) RJ45 Connector  (ii) Network Interface Card (NIC)
(C) Ethernet Port  (iii) Plastic cup
(D) Crimping Tool  (iv) Twisted Pair

(a) (A) – (i); (B) – (iii); (C) – (ii); (B) – (iv)
(b) (A) – (ii); (B) – (i); (C) – (iii); (D) – (iv)
(c) (A) – (iii); (B) – (i); (C) – (ii); (D) – (iv)
(d) (A) – (iv); (B) – (iii); (C) – (ii); (D) – (i)
Answer:
(d) (A) – (iv); (B) – (iii); (C) – (ii); (D) – (i)

Question 53.
Match the following:

(A) Ethernet Technology  (i) 8P8C connector
(B) RJ45 Connector  (ii) IEEE
(C) RJ45 Socket  (iii) Ethernet Cable
(D) RJ45 Cable  (iv) RJ45 Jack

(a) (A) – (ii); (B) – (iii); (C) – (i); (D) – (iv)
(b) (A) – (ii); (B) – (i); (C) – (iv); (D) – (iii)
(c) (A) – (ii); (B) – (i); (C) – (iii); (D) – (iv)
(d) (A) – (iii); (B) – (iv); (C) – (i); (D) – (ii)
Answer:
(b) (A) – (ii); (B) – (i); (C) – (iv); (D) – (iii)

Question 54.
Match the following:

(A) RJ (i) Land lines
(B) RJ – 11 (ii) Amphenol connector
(C) RJ – 61 (iii) Network Interface
(D) RJ – 21 (iv) Twisted Pair cable

(a) (A) – (iiî); (B) – (i); (C) – (iv); (D) – (ii)
(b) (A) – (iii); (B) – (iv); (C) – (ii); (D) – (i)
(c) (A) – (iii); (B) – (ii); (C) – (i); (D) – (iv)
(d) (A) – (iii); (B) – (iv); (C) – (i); (D) – (ii)
Answer:
(a) (A) – (iiî); (B) – (i); (C) – (iv); (D) – (ii)

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 55.

(A) USB (i) directly connects two computers
(B) Null Modem (ii) Sim slot
(C) TX/RX (iii) Connect to peripheral devices
(D) Dongles (iv) Transmit / Receive signals

(a) (A) – (iii); (B)-(ii); (C) – (iv); (D) – (i)
(b) (A) – (iii) (B) – (i); (C) – (iv); (D) – (ii)
(c) (A) – (iii); (B) – (ii); (C) – (iv); (D) – (i)
(d) (A) – (iv); (B) – (iii); (C) – (ii); (D) – (i)
Answer:
(b) (A) – (iii) (B) – (i); (C) – (iv); (D) – (ii)

Question 56.
Choose the incorrect pair:
(a) ARPANET – Modem Internet
(b) Computer – Charles Babbage
(c) WWW – Tim Berners Lee
(d) Coaxial cables -1990
Answer:
(d) Coaxial cables -1990

Question 57.
Choose the incorrect pair:
(a) Coaxial cables – Aluminium cable
(b) Twisted pair cables – Insulated wires
(c) Fibre optics – Pulse of light
(d) Serial cable – RS232
Answer:
(a) Coaxial cables – Aluminium cable

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 58.
Choose the incorrect pair:
(a) Twisted pair – 8 wires
(b) RJ45 – Colour code
(c) 8P81 – Connector
(d) T – 568A – Wiring schme
Answer:
(b) RJ45 – Colour code

Question 59.
Choose the correct pair:
(a) Ethernet – Bob Metcalfe
(b) IEEE – USA company
(c) PC / NIC – Wiring method
(d) Cross over – Cable manufacturer
Answer:
(a) Ethernet – Bob Metcalfe

Question 60.
Choose the correct pair:
(a) 100 Base BX – Multi mode
(b) 100 Base SX – Single mode
(c) Serial Port – 1 bit
(d) Parallel port – 28 bits
Answer:
(c) Serial Port – 1 bit

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 61.
Choose the incorrect statement:
(a) Coaxial cable is used to connect the Television sets to home antennas.
(b) Coaxial cable is used to transfer the information in a 100 mbps.
(c) Coaxial cable is divided into thinnet and thicknet cables.
(d) Media Bridge 50 – feet coaxial cable is a type of coaxial cable.
Answer:
(b) Coaxial cable is used to transfer the information in a 100 mbps.

Question 62.
Choose the incorrect statement:
(a) The crossover Ethernet cable is an example of the Null modem cables.
(b) Computers can be connected on the network with the help of wired media or wireless media.
(c) Wired networks enable more devices including mobile sharing the resources and Internet connections remotely.
(d) The computers with wired connections must be configured with Ethernet card.
Answer:
(c) Wired networks enable more devices including mobile sharing the resources and Internet connections remotely.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 63.
Choose the incorrect statement:
(a) The Ethernet cable is the basic component of the LAN.
(b) RJ45 connector is made up of plastic cubes connected at the both the ends.
(c) The plastic covering is used to provide protection to the wires.
(d) The patch cables has eighteen small wires inside different colours.
Answer:
(d) The patch cables has eighteen small wires inside different colours.

Question 64.
Choose the correct statement:
(a) A crossover Ethernet cable is specially designed for making connection between two computers.
(b) The Ethernet cables are sometimes called as RJ65 cables.
(c) The RJ65 connector has eighteen small jack inside to connect eighteen small wires of the patch cable.
(d) There are eight wiring schemes available to terminate the twisted-pair cable on each end.
Answer:
(a) A crossover Ethernet cable is specially designed for making connection between two computers.

Question 65.
Choose the correct statement:
(a) The crimping tool is a physical tool which is used to connect the modem and computer.
(b) The crimping tool looks like a small cutting handle -with six mold of Ethernet port.
(c) The primary function of the registered jack is to connect different data equipment and telecommunication devices.
(d) The rollover wiring have some side pin arrangements.
Answer:
(c) The primary function of the registered jack is to connect different data equipment and telecommunication devices.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 66.
Assertion (A):
Twisted pair cables is type of cable with two or more insulated wires twisted together.
Reason (R):
The coaxial cables are used for Dish TV where the setup box and the Television is connected.
(a) Both A and R are true, and R is the correct explanation for A
(b) Both A and R are true, but R is not the correct explanation for A.
(c) A is true, But R is false.
(d) A is false, But R is True.
Answer:
(b) Both A and R are true, but R is not the correct explanation for A.

Question 67.
Assertion (A):
There are some special network devices used to connect the Internet through the USB called dongles.
Reason (R):
The dongle is a small peripheral device which has a compatible of mobile broadband with a sim slot in it.
(a) Both A and R are true, and R is the correct explanation for A
(b) Both A and R are true, but R is not the correct explanation for A.
(c) A is true, But R is false.
(d) A is false, But R is True.
Answer:
(a) Both A and R are true, and R is the correct explanation for A

Question 68.
Assertion (A):
Ethernet cable is the most common type of network cable mainly used for connecting the computers or devices.
Reason (R):
The crossover Ethernet cable is an example of serial cable.
(a) Both A and R are true, and R is the correct explanation for A
(b) Both A and R are true, but R is not the correct explanation for A.
(c) A is true. But R is false.
(d) A is false. But R is True.
Answer:
(c) A is true. But R is false.

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 69.
Assertion (A):
Wireless Ethernet cards are also available, which uses magnetic and Micro waves.
Reason (R):
Ethernet port is an opening which is a part of an Ethernet card.
(a) Both A and R are true, and R is the correct explanation for A
(b) Both A and R are true, but R is not the correct explanation for A.
(c) A is true, But R is false.
(d) A is false, But R is True.
Answer:
(d) A is false, But R is True.

Question 70.
Assertion (A):
Expansion card is a addition a card which’ is inserted into motherboard.
Reason (R):
The crimping tool is a mechanical tool which is used to connect the USB.
(a) Both A and R are true.
(b) Both A and R are false.
(c) A is true, But R is false.
(d) A is false, But R is True.
Answer:
(b) Both A and R are false.

Question 71.
Pick the odd one out:
(a) Coaxial
(b) Twisted Pair
(c) Fibre optics
(d) Null modem
Answer:
(d) Null modem

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 72.
Pick the odd one put:
(a) Patch cable
(b) Fibre optics
(c) RJ45 Connector
(d) Ethernet ports
Answer:
(b) Fibre optics

Question 73.
Pick the odd one out:
(a) Crimping tool
(b) Straight-Through
(c) Cross-over
(d) Roll-over
Answer:
(a) Crimping tool

Question 74.
Pick the odd one out:
(a) LAN
(b) MAN
(c) USB
(d) WAN
Answer:
(c) USB

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 75.
Pick the odd one out:
(a) RJ45
(b) RJ11
(c) RJ21
(d) RJ61
Answer:
(a) RJ45

Question 76.
ARPANET stands for:
(a) American Research Project Agency Network.
(b) Advanced Research Project Area Network
(c) Advanced Research Project Agency Network
(d) American Research Programs And Network
Answer:
(c) Advanced Research Project Agency Network

Question 77.
WWW was invented by:
(a) Tim Berners Lee
(b) Charles Babbage
(c) Blaise Pascal
(d) John Napier
Answer:
(a) Tim Berners Lee

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 78.
Which cable is used in cable TV to connect with setup box?
(a) UTP cable
(b) Fibre optics
(c) Coaxial cable
(d) USB cable
Answer:
(c) Coaxial cable

Question 79.
Expansion of UTP is:
(a) Uninterrupted Twisted Pair
(b) Uninterrupted Twisted Protocol
(c) Unshielded Twisted Pair
(d) Universal Twisted Protocol
Answer:
(c) Unshielded Twisted Pair

Question 80.
Which medium is used in the optical fibre cables to transmit data?
(a) Microwave
(b) Infra red
(c) Light
(d) Sound
Answer:
(c) Light

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 81.
Which of the following is a small peripheral device with a sim slot to connect the computers to Internet?
(a) USB
(b) Dongles
(c) Memory card
(d) Mobiles
Answer:
(b) Dongles

Question 82.
Which connector is used in the Ethernet cables?
(a) RJ11
(b) RJ21
(c) RJ61
(d) RJ45
Answer:
(d) RJ45

Question 83.
Which of the following connector is called as champ connector?
(a) RJ11
(b) RJ21
(c) RJ61
(d) RJ45
Answer:
(b) RJ21

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 84.
How many pins are used in FU45 cables?
(a) 8
(b) 6
(c) 50
(d) 25
Answer:
(a) 8

Question 85.
Which wiring standard is used for connecting two computers directly?
(a) Straight Through wiring
(b) Cross Over wiring
(c) Rollover wiring
(d) None
Answer:
(b) Cross Over wiring

Question 86.
Pick the odd one out from the following cables:
(a) roll over
(b) cross over
(c) null modem
(d) straight through
Answer:
(c) null modem

Samacheer Kalvi TN State Board 12th Computer Applications Important Questions Chapter 13 Network Cabling

Question 87.
Match the following:

(A) Ethernet  (i) Port
(B) RJ45 connector  (ii) Ethernet
(C) RJ45 jack  (iii) Plug
(D) RJ45 cable  (iv) 802.3

(a) (A) – (i); (B) – (ii); (C) – (iv); (D) – (iii)
(b) (A) – (iv); (B) – (i); (C) – (iii); (D) – (ii)
(c) (A) – (iv); (B) – (iii); (C) – (i); (D) – (ii)
(d) (A) – (iv); (B) – (ii); (C) – (i); (D) – (iii)
Answer:
(c) (A) – (iv); (B) – (iii); (C) – (i); (D) – (ii)

TN Board 12th Computer Applications Important Questions