TN State Board 11th Computer Science Important Questions Chapter 4 Theoretical Concepts of Operating System
Question 1.
What is a software?
Answer:
A software is set of instructions that perform specific task. It interacts basically with the hardware to generate the desired output.
Question 2.
Mention the types of software.
Answer:
Software is classified into two types:
(i) Application Software
(ii) System Software.
Question 3.
Define application software.
Answer:
Application software is a set of programs to perform specific task. Eg: MS-Word is an application software to Create text document and VLC player is familiar application software to play audio, video files and many more.
Question 4.
Define system software.
Answer:
System software is a type of computer program that is designed to run the computer’s hardware and application programs.
Eg: Operating System and Language Processor.
Question 5.
Define OS.
Answer:
An Operating System (OS) is a system software Which serves as an interface . between a user and a computer.
Question 6.
Write the key features of the operating system.Answer:
The key features of the operating system are:
- User Interface
- Memory Management
- Process Management
- Security Management
- Fault Tolerance
- File Management.
Question 7.
What is the main objective of memory management?
Answer:
The objective of Memory Management process is to improve both the utilization of the CPU and the speed of the computer ’s response to its users via main memory. The computers must keep several programs in main memory that associates with many different Memory Management schemes.
Question 8.
What is Garbage collection?
Answer:
Allocation and de-allocation of memory blocks as needed by the program in main memory is called Garbage collection.
Question 9.
How the processes are classified?
Answer:
A computer consists of a collection of processes, they are classified into two categories:
- Operating System proc|sses which is executed by system code.
- User Processes which is execute by user code.
Question 10.
Write the resources of a process.
Answer:
A process needs certain resources including CPU time, memory, files and I/O devices to finish its task.
Question 11.
What is Round Robin Scheduling?
Answer:
The Round Robin (RR) scheduling algorithm is designed especially for time sharing systems. Jobs (processes) are assigned and processor time in a circular method. Eg: Take three jobs A, B, C. First the job A is assigned to CPU then job B and job C and then again A, B and C and so on.
Question 12.
What is meant by fault tolerance?
Answer:
The Operating Systems should be robust. When there is a fault, the Operating System should not crash, instead the Operating System have fault tolerance capabilities and retain the existing state of system.
Question 13.
List the prominent operating system.
Answer:
Prominent OS are as follows:
- UNIX
- Microsoft Windows
- Linux
- iOS
- Android.
Question 14.
What is Unix?
Answer:
UNIX is a family of multitasking, multi-user operating systems that derive originally from AT&T Bell Labs, where the development began in the 1970s by Ken Thompson and Dennis Ritchie.
Question 15.
What is iOS?
Answer:
iOS (formerly iPhone OS) is a mobile Operating System created and developed by Apple Inc., exclusively for its hardware. It is the Operating System that presently powers many of the company’s mobile devices, including the iPhone, iPad and iPod Touch. It is the second most popular mobile Operating System globally after Android.
Question 16.
What is meant by Error Log File?
Answer:
The user interface should reduce number of errors committed by the user with little practice the user should be in a position to avoid errors (Error Log File).
Question 17.
What is process?
Answer:
A process is the unit of work (program) in a computer. A word-processing program being run by an individual user on a computer is a process. A system task, such as sending output to a printer or screen, can also be called as a Process.
Question 18.
Expand the following FAT and NTFS.
Answer:
FAT – Be location Table.
NTFS – Nx Tgeneration Be System.
Question 19.
What are the popular operating systems used in personal computers and laptops?
Answer:
Popular operating systems used in personal computers and laptops are:- Windows, UNIX and Linux.
Question 20.
What is the need of operating system?
Answer:
It is an interface between the user and hardware.
Question 21.
Why operating system works as translator?
Answer:
Operating system translates the user request into machine language (Binary language), processes it and then sends it back to operating systems.
Question 22.
Why is Linux called open source operating systems?
Answer:
It can be modified and distributed by anyone around the world. The main advantage of Linux operating system is that it is open source. There are many versions and their updates. Most of the servers run on Linux because if is easy to customize.
Question 23.
Write the few different distributions of Linux?
Answer:
Few different distributions of Linux are Ubuntu, Mint, Fedora, RedHat, Debian, Google’s Android, Chrome OS and Chromium OS.
Question 24.
What are the operating systems used in mobile devices?
Answer:
Apple iOS and Google Android are the mobile operating systems.
Question 25.
What is a Android?
Answer:
Android is a mobile operating system developed by Google, based on Linux and designed primarily for touch screen mobile devices such as smart phones and tablets.
Question 26.
What are the devices that uses Android operating system?
Answer:
Android TV for televisions, Android Auto for cars and Android wear for wrist watches, each with a specialized user interface. It is also used on game consoles, digital cameras, PCs and other electronic gadgets.
Question 27.
Write the uses of operating system.
Answer:
The main use of Operating System is
- to ensure that a computer can be used do to exact if what the user wants it do.
- easy interaction between the users and computers.
- starting computer operation automati¬cally when power is turned on (Booting).
- controlling Input and Output Devices.
- manage the utilization of main memory.
- providing security to user programs.
Question 28.
Mention the types of operating system.
Answer:
- Single user operating system
- Multi-user operating system
- Multi processing operating system
- Time sharing operating system
- Real time operating system
- Distributed operating system
- Interactive operating system.
Question 29.
How the operating system provides securities to the end user?
Answer:
The Operating System provides three levels of securities to the user end.
They are
(i) File access level
(ii) System level
(iii) Network level.
(i) In order to access the files created by other people, one should have the access permission. Permissions can either be granted by the creator of the file or by the administrator of the system.
(ii) System level security is offered by the password in a multi-user environment. Both windows and Linux offer the password facility.
(iii) Network security is an indefinable one. So people from all over the world try to provide such a security.
Question 30.
Write short notes on time-sharing.
Answer:
Time sharing is one of the features of Operating Systems. It allows execution of multiple tasks or processes concurrently. For each task a fixed time is allocated. This division of time is called Time- sharing. The processor switches rapidly between various processes after a time is elapsed or the process is completed.
Eg: Assume that there are three processes called P1, P2, P3 and time allocated for each process 30, 40, 50 minutes respectively. If the process PI completes within 20 minutes then processor takes the next process P2 for the execution. If the process P2 could not complete within 40 minutes, then the current process P2 will be paused and switch over to the next process P3.
Question 31.
Write the responsibilities of operating system in connection with memory management.
Answer:
The Operating System is responsible for the following activities in connection with memory management:
- Keeping track of which portion of memory are currently being used and who is using them.
- Determining which processes (or parts of processes) and data to move in and out of memory.
- Allocation and de-allocation of memory blocks as needed by the program in main memory. (Garbage Collection)
Question 32.
Write the responsibilities of operating system associated with the process management.
Answer:
The Operating System is responsible for the following activities associated with the process management:
- Scheduling processes and threads on the CPUs.
- Creating and deleting both user and system processes.
- Suspending and resuming processes.
- Providing mechanisms for process synchronization.
- Providing mechanisms for process communication.
Question 33.
Write short note on file management.
Answer:
File management is an important function of OS which handles the data storage techniques. The operating System manages the files, folders and directory systems on a computer. Any type of data in a computer is stored in the form of files and directories/ folders through File Allocation Table (FAT). The FAT stores general information about files like filename, type (text or binary), size, starting address and access mode (sequential/ indexed/indexed-sequential/direct/relative).
Question 34.
What are the advantages of distributed operating system?
Answer:
The advantages of distributed Operating System are as follows:
- A user at one location can make use of all the resources available at another location over the network.
- Many computer resources can be added easily in the network.
- Improves the interaction with the customers and clients.
- Reduces the load on the host computer.
Question 35.
Write short note on Linux.
Answer:
Linux is a family of open-source operating systems. It can be modified and distributed by anyone around the world. This is different from proprietary software like Windows, which can only be modified by the company that owns it. The main advantage of Linux operating system is that it is open source. There are many versions and their updates. Most of the servers run on Linux because it is easy to customize.
Linux distributions: Linux mint, Fedora, Ubuntu, BOSS, Redhat.
Question 36.
Write in detail about memory management.
Answer:
Memory Management is the process of controlling and coordinating computer’s main memory and assigning memory block (space) to various running programs to optimize overall computer performance. It involves the allocation of specific memory blocks to individual programs based on user demands. At the application level, memory management ensures the availability of adequate memory for each running program at all times.
The Operating System is responsible for the following activities in connection with memory management:
(i) Keeping track of which portion of memory are currently being used and who is using them.
(ii) Determining which processes (or parts of processes) and data to move in and out of memory.
(iii) Allocation and de-allocation of memory blocks as needed by the program in main memory. (Garbage Collection)
Question 37.
How will you classify the operating system?
Answer:
Question 38.
What is a software? Explain the types of software?
Answer:
A software is set of instructions that perform specific task. It interacts basically with the hardware to generate the desired output.
Types of Software: Software is classified into two types:
(i) Application Software,
(ii) System Software.
Application software is a set of programs to perform specific task.
Eg: MS – word is an application software to create text document and VLC player is familiar application software to play audio, video files and many more.
System software is a type of computer program that is designed to run the computer ’s hardware and application programs.
Eg: Operating System and Language Processor.
Question 39.
Explain in detail the User Interface (Ul) in operating system.
Answer:
User interface is one of the significant feature in Operating System. The only way that user can make interaction with a computer. If the computer interface is not user-friendly, the user slowly reduces the computer usage from their normal life. This is a main reason for key success of GUI (Graphical User Interface) based Operating System.
The GUI is a window based system with a pointing device to direct I/O, choose from menus, make selections and a keyboard to enter text. Its vibrant colours attract the user very easily. Beginners are impressed by the help and pop up window message boxes. Icons are playing vital role of the particular application.
Now Linux distribution is also available as GUI based Operating System. The following points are considered when User Interface is designed for an application.
(i) The user interface should enable the user to retain this expertise for a longer time.
(ii) The user interface should also satisfy the customer based on their needs.
(iii) The user interface should save user’s precious time. Create graphical elements like Menus,Window,Tabs, Icons and reduce typing work will be an added advantage of the Operating System.
(iv) The ultimate aim of any product is to satisfy the customer. The User Interface is also to satisfy the customer.
(v) The user interface should reduce number of errors committed by the user with little practice the user should be in a position to avoid errors (Error Log File).
Question 40.
Explain the process management.
Answer:
Process management is function that includes creating and deleting processes and providing mechanisms for processes to communicate and synchronize with each other. A process is the unit of work (program) in a computer. A word-processing program being run by an individual user on a computer is a process. A system task, such as sending output to a printer or screen, can also be called as a Process.
A computer consists of a collection of processes, they are classified as two categories:
(i) Operating System processes which is executed by system code.
(ii) User Processes which is execute by user code.
All these processes can potentially execute concurrently on a single CPU.
A process needs certain resources including CPU time, memory, files and I/O devices to finish its task.
The Operating System is responsible for the following activities associated with the process management:
(i) Scheduling processes and threads on the CPUs
(ii) Creating and deleting both user and system processes
(iii) Suspending and resuming processes
(iv) Providing mechanisms for process synchronization
(v) Providing mechanisms for process communication.
Question 41.
What are the advantages of memory management in Operating System?
Answer:
Memory Management is the process of controlling and coordinating computer’s main memory and assigning memory block (space) to various running programs to optimize overall computer performance. It involves the allocation of specific memory blocks to individual programs based on user demands. At the application level, memory management ensures the availability of adequate memory for each running program at all times.
Question 42.
What is multi-user Operating system?
Answer:
It is used in computers and laptops that allow same data and applications to be accessed by multiple users at the same time. The users can also communicate with each other. Eg: Windows, Linux and UNIX.
Question 43.
What is a GUI?
Answer:
The Graphical User Interface is a type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, instead of text-based user interfaces, typed command labels or text navigation.
Question 44.
List out different distributions of Linux operating system.
Answer:
Different distributions of Linux are Linux Mint, Fedora, Ubuntu, BOSS, RedHat.
Question 45.
What are the security management features available in Operating System?
Answer:
The Operating System provides three levels of securities to the user end. They are
- File access level
- System level
- Network level.
Question 46.
What is multi-processing?
Answer:
Multi-processing is one of the features of Operating System. It has two or more processors for a single running process (job). Processing takes place in parallel is known as parallel processing. Each processor works on different parts of the same task or on two or more different tasks.
Question 47.
What are the different Operating Systems used in computer?
Answer:
Operating Systems used in personal computers and laptops are Windows, UNIX and Linux. The mobile devices mostly use Android and iOS as mobile OS.
Question 48.
What are the advantages and disadvantages of Time-sharing features?
Answer:
Advantages:
- Provides the advantage of quick response.
- Avoids duplication of software.
- Reduces CPU idle time.
- It can execute tasks simultaneously.
Disadvantages:
- Problem of data communication and security.
- Problem of reliability.
Question 49.
Explain and List out examples of mobile operating system.
Answer:
Mobile devices such as phones, tablets and MP3 players are different from desktop and laptop computers and hence they need special Operating Systems.
Eg: Apple iOS and Google Android.
Android:
It is a mobile operating system developed by Google, based on Linux and designed primarily for touch screen mobile devices such as smart phones and tablets. Google has developed Android TV for televisions, Android Auto for cars and Android Wear for wrist watches, each with a specialized user interface. Android are also used on game consoles, digital cameras, PCs and other electronic gadgets.
iOS-iPhone OS:
iOS (formerly iPhone OS) is a mobile Operating System created and developed by Apple Inc., exclusively for its hardware. It is the Operating System that powers many of the company’s mobile devices, including the iPhone, iPad and iPod Touch. It is the second most popular mobile Operating System globally after Android.
Question 50.
What are the differences between Windows and Linux Operating system?
Answer:
| Windows |
Linux |
| Microsoft Windows is a family of proprietary operating system. | Linux is a family of open source operating system. |
| It is a user interface. | It is a command line access. |
| It can only be modified by the company that owns it. | It can be modified and distributed by anyone around the world. |
Question 51.
Explain the process management algorithms in Operating System.
Answer:
The following algorithms are mainly used to allocate the job (process) to the processor,
(i) FIFO
(ii) SJF
(iii) Round Robin
(iv) Based on Priority.
(i) FIFO (First In First Out) Scheduling:
The process that enters the queue first is executed first by the CPU, followed by the next and so on. The processes are executed in the order of the queue (row).
(ii) SJF (Shortest Job First) Scheduling:
This algorithm works based on the size of the job being executed by the CPU. Consider two j obs A and B.
(a) A = 6 kilo bytes, (b) B = 9 kilo bytes First the job “A” will be assigned and then job “B” gets its turn.
(iii) Round Robin Scheduling:
This algorithm is designed especially for time sharing systems. Jobs (processes) are assigned and processor time in a circular method. Take three jobs A, B, C. First the job A is assigned to CPU then job B and job C and then again A, B and C and so on.
(iv) Based On Priority:
The given job (process) is assigned based on a Priority. The job which has higher priority is more important than other jobs. Eg: Take two jobs A and B. Let the priority of A be 5 and priority B be 7.
Job B is assigned to the processor before job A.
Question 52.
Explain the concept of a Distributed Operating System.
Answer:
The distributed operating system takes care of the data and application that are stored and processed on multiple physical locations across the world over the digital network (internet/intranet). The Distributed Operating System is used to access shared data and files . that reside in any machine around the world. The user can handle the data from different locations. The users can access as if it is available on their own computer.
The advantages of distributed Operating System are as follows:
(i) A user at one location can make use of all the resources available at another location over the network.
(ii) Many computer resourcgs can be added easily in the network.
(iii) Improves the interaction with the customers and clients.
(iv) Reduces the load on the host computer.
Question 53.
Explain the main purpose of an operating system.
Answer:
In earlier day’s user had to design the application to the internal structure of the hardware. Operating system was needed to enable the user to design the application without the knowledge of the computer’s internal structure and hardware system.
Nowadays, user needs an interface to interact with the computer and controls the execution of all kinds of programs without knowing the internals of the hardware.
Usage of Operating system:
(i) Easy interaction between the human and computer.
(ii) Starting computer operation automatically when power is turned on.
(iii) Loading and scheduling users program.
(iv) Controlling input and output devices.
(v) Managing use of main memory.
(vi) Providing security to users program.
Question 54.
Explain advantages and disadvantages of open source operating systems.Answer:
Advantages:
- It is cheaper.
- It is high quality.
- Open source operating system is very reliable.
- Help us become more flexible.
- Creativity.
Disadvantages:
- Vulnerable to malicious users.
- It is not always user-friendly.
- Personalized support is rarely available.
- Institutional and organizational procurement process affecting the decision making process.
Choose the correct answer:
Question 1.
__________ is set of instructions that perform specific test.
(a) Software
(b) Hardware
(c) Instruction
(d) Data
Answer:
(a) Software
Question 2.
There are _____ types of software.
(a) 2
(b) 3
(c) 4
(d) 6
Answer:
(a) 2
Question 3.
__________ is a set of programs to perform specific task.
(a) Software
(b) System software
(c) Application software
(d) Hardware
Answer:
(c) Application software
Question 4.
__________ is an application software.
(a) Linux
(b) Unix
(c) MS-Word
(d) Windows
Answer:
(c) MS-Word
Question 5.
________ is an system software:
(a) Windows
(b) MS-Word
(c) MS-Excell
(d) Lotus
Answer:
(a) Windows
Question 6.
An operating system allows only a single user to perform a task at a time is called as a:
(a) single user operating system
(b) multi-user operating system
(c) time sharing
(d) distributed operating system
Answer:
(a) single user operating system
Question 7.
The operating system provides levels of securities to the end user.
(a) four
(b) five
(c) six
(d) three
Answer:
(d) three
Question 8.
The expansion of FIFO is
(a) First In First Out
(b) Fast In Fast Out
(c) Fast In First Out
(d) First In Fast Out
Answer:
(a) First In First Out
Question 9.
The expansion of SJF is
(a) Slower Job First
(b) Slower Job Front
(c) Shortest Job First
(d) Shortest Job Front
Answer:
(c) Shortest Job First
Question 10.
________ Security is offered by the password in a multi-user environment:
(a) System level
(b) File level
(c) Network level
(d) Software level
Answer:
(a) System level
Question 11.
The Linux operating system was originated in the year:
(a) 1991
(b) 1997
(c) 1980
(d) 1993
Answer:
(a) 1991
Question 12.
__________ is an example for a single user operating system:
(a) Windows
(b) Linux
(c) Unix
(d) MS-Dos
Answer:
(d) MS-Dos
Question 13.
_______ management is the process of controlling and coordinating computer’s main memory:
(a) Memory
(b) Process
(c) Security
(d) Fault tolerance
Answer:
(a) Memory
Question 14.
The __________ operating system is used to access shared data and files that residue in any machine around the world:
(a) multiuser
(b) single user
(c) distributed
(d) time sharing
Answer:
(c) distributed
Question 15.
The ________ scheduling algorithm is designed especially for time sharing system:
(a) FIFO
(b) SJF
(c) Round Robin
(d) Based on priority
Answer:
(c) Round Robin
Question 16.
iOS was created and developed by:
(a) Apple Inc
(b) IBM
(c) Apple iOS
(d) Microsoft
Answer:
(a) Apple Inc
Question 17.
__________ is a computer related mistake.
(a) Data
(b) Program
(c) File
(d) Error
Answer:
(d) Error
Question 18.
An example of a single user and single task operating system is:
(a) MS-DOS
(b) UNIX
(c) Windows
(d) Linux
Answer:
(a) MS-DOS
Question 19.
An example of a multi user and multi task operating system:
(a) MS-DOS
(b) UNIX
(c) Windows
(d) Both (b) and (c)
Answer:
(d) Both (b) and (c)
Question 20.
Memory management is the process of controlling and co-ordinating:
(a) Operating system
(b) Application software
(c) Main memory
(d) Devices
Answer:
(c) Main memory
Question 21.
How many categories are classified by the collection of process?
(a) 1
(b) 2
(c) 3
(d) 4
Answer:
(b) 2
Question 22.
Which is based on queuing technique?
(a) FIFO
(b) SJF
(c) Round Robin
(d) Based on Priority
Answer:
(a) FIFO
Question 23.
Which scheduling works based on the size . of the job being executed by the CPU?
(a) FIFO
(b) SJF
(c) Round Robin
(d) Based on Priority
Answer:
(b) SJF
Question 24.
Which security is an indefinable one?
(a) Network level
(b) System level
(c) File level
(d) Process level
Answer:
(a) Network level
Question 25.
Which is one of the feature of operating system that allows execution of multiple tasks?
(a) File management
(b) Time sharing
(c) Memory management
(d) Process management
Answer:
(b) Time sharing
Question 26.
Which is used to access shared data and files that reside in any computer around the world?
(a) Single user operating system
(b) Multi user operating system
(c) Distributed operating system
(d) Mobile operating system
Answer:
(c) Distributed operating system
Question 27.
Which is a family of multitasking and multi-user operating systems?
(a) MS-DOS
(b) DOS
(c) CP / M
(d) UNIX
Answer:
(d) UNIX
Question 28.
UNIX was developed by:
(a) Ken Thompson
(b) Dennis Ritchie
(c) Thomas wood
(d) Both (a) and (b)
Answer:
(a) Ken Thompson
Question 29.
Which is called family of open-source operating systems?
(a) LINUX
(b) MS-DOS
(c) DOS
(d) Windows
Answer:
(a) LINUX
Question 30.
Linux operating system is similar to:
(a) MS-DOS
(b) UNIX
(c) DOS
(d) Windows
Answer:
(b) UNIX
Question 31.
Which is a windows alternative open source operating system?
(a) React OS
(b) LINUX
(c) UNIX
(d) MS-DOS
Answer:
(a) React OS
Question 32.
Who developed Android mobile operating system?
(a) Wipro
(b) Microsoft
(c) IBM
(d) Google
Answer:
(d) Google
Question 33.
Which is the second most popular mobile operating system globally after Android?
(a) UNIX
(b) LINUX
(c) iOS
(d) BOSS
Answer:
(a) UNIX
Question 34.
Match the following:
| (a) Allocation and de – allocation of memorv blocks | (i) Process management |
| (b) Round Robin | (ii) Multi Drocessine |
| (c) File access level | (iii) Memory management |
| (d) Two or more processors for a single running process | (iv) Security management |
(a) (iii), (i), (iv), (ii)
(b) (i), (iv), (ii), (iii)
(c) (iii), (iv), (i), (ii)
(d) (ii), (iii), (iv), (i)
Answer:
(a) (iii), (i), (iv), (ii)
Question 35.
Match the following:
| (i) Application Software | (a) Assigning memory blocks to various running programs. |
| (ii) System Software | (b) A set of programs to perform specific task. |
| (in) Operating System | (c) Designed to run the computers hardware and application program. |
| (iv) Memory Management | (d) Interface between a user and a computer. |
(a) (i) – (a); (ii) – (b); (iii) – (c); (iv) – (d)
(b) (i) – (b); (ii) – (c); (iii) – (d); (iv) – (a)
(c) (i) – (c); (ii) – (b); (iii) – (a); (iv) – (d)
(d) (i) – (d); (ii) – (a); (iii) – (b); (iv) – (c)
Answer:
(b) (i) – (b); (ii) – (c); (iii) – (d); (iv) – (a)
Question 36.
Find the odd man out:
(a) FIFO
(b) SJF
(c) Android
(d) Round Robin
Answer:
(c) Android
Question 37.
Find the odd man out:
(a) Unix
(b) Linux
(c) iOS
(d) Fault Tolerance
Answer:
(d) Fault Tolerance
Question 38.
Choose the correct pair.
| Column – I |
Column – II |
| (a) FIFO | Size of the job |
| (b) SJF | Queuing technique |
| (c) Multi – processing | Provides security to the end user. |
| (d) Time – sharing | Allows execution of multiple tasks or process concurrently. |
Answer:
(d)
Question 39.
Identify the odd man out:
(a) Alpha
(b) Donut
(c) Froyo
(d) Mint
Answer:
(d) Mint
Question 40.
Choose the incorrect pair.
|
Column – I |
Column – II |
| (a) Memory Management | Controlling and coordinating computer’s main memory |
| (b) Process Management | Function that includes creating and deleting process |
| (c) File Management | Handles the data storage techniques |
| (d) Time Sharing | Data and application are stored and processed on multiple physical locations across the world. |
Answer:
(d)
Question 41.
Assertion (A):
Linux is a family of proprietary operating system.
Reason (R):
It can be modified and distributed by anyone around the world.
(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 42.
Assertion (A):
Modem operating system use a Graphical User Interface (GUI).
Reason (R):
A GUI lets us use mouse to click icons, buttons, menus and everything clearly displayed on the screen.
(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 43.
Operating system is a:
(a) application software
(b) hardware
(c) system software
(d) component
Answer:
(c) system software
Question 44.
Identify the usage of operating systems:
(a) easy interaction between the human and computer
(b) controlling input and output Devices
(c) managing use of main memory
(d) all the above
Answer:
(d) all the above
Question 45.
Which of the following is not a function of an Operating System?
(a) Process Management
(b) Memory Management
(c) Security management
(d) Compiler Environment
Answer:
(d) Compiler Environment
Question 46.
Which of the following OS is a Commercially licensed Operating system?
(a) Windows
(b) UBUNTU
(c) FEDORA
(d) REDHAT
Answer:
(a) Windows
Question 47.
Which of the following Operating systems support Mobile Devices?
(a) Windows 7
(b) Linux
(c) BOSS
(d) iOS
Answer:
(d) iOS
Question 48.
File Management manages:
(a) files
(b) folders
(c) directory systems
(d) all the above
Answer:
(d) all the above
Question 49.
Interactive Operating System provides:
(a) Graphics User Interface (GUI)
(b) Data Distribution
(c) Security Management
(d) Real Time Processing
Answer:
(a) Graphics User Interface (GUI)
Question 50.
Android is a:
(a) Mobile Operating system
(b) Open Source
(c) Developed by Google
(d) All the above
Answer:
(d) All the above
Question 51.
Which of the following refers to Android operating system’s version?
(a) JELLY BEAN
(b) UBUNTU
(c) OS/2
(d) MITTIKA
Answer:
(a) JELLY BEAN