# set-3

#### 101. Multiprogramming was made possible by:

1. Input/output units that operate independently of the CPU
2. Operating systems
3. Both (A) and (B)
4. Neither (A) nor (B)

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<summary>Show me the answer</summary>

**Answer:** 3. Both (A) and (B)

**Explanation:**

* **Multiprogramming:** Multiprogramming allows multiple processes to reside in memory simultaneously and share the CPU. This is made possible by:
  * **Independent I/O Units:** I/O devices that operate independently of the CPU allow processes to perform I/O operations without blocking the CPU.
  * **Operating Systems:** The operating system manages process scheduling, memory allocation, and I/O operations to enable multiprogramming.
* **Conclusion:** Both independent I/O units and operating systems are essential for multiprogramming.

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#### 102. A translator which reads an entire program written in a high-level language and converts it into machine language code is:

1. Assembler
2. Compiler
3. Translator
4. System software

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<summary>Show me the answer</summary>

**Answer:** 2. Compiler

**Explanation:**

* **Compiler:** A compiler is a translator that converts an entire high-level language program into machine language code. It performs lexical analysis, syntax analysis, code generation, and optimization.
* **Conclusion:** A compiler translates high-level programs into machine code.

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#### 103. What is the name given to all the programs inside the computer which make it usable?

1. Application software
2. Firmware
3. System software
4. Shareware

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<summary>Show me the answer</summary>

**Answer:** 3. System software

**Explanation:**

* **System Software:** System software includes the operating system, utilities, and other programs that manage hardware and provide a platform for running application software.
* **Conclusion:** System software makes the computer usable.

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#### 104. Systems software is a program that directs the overall operation of the computer, facilitates its use, and interacts with all users. What are the different types of this software?

1. Operating system
2. Utilities
3. Language translators
4. All of the above

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<summary>Show me the answer</summary>

**Answer:** 4. All of the above

**Explanation:**

* **System Software Types:** System software includes:
  * **Operating System:** Manages hardware and software resources.
  * **Utilities:** Perform maintenance and optimization tasks.
  * **Language Translators:** Convert high-level code into machine code.
* **Conclusion:** All the listed types are part of system software.

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#### 105. What is the name of the system which deals with the running of the actual computer and not with the programming problems?

1. Operating system
2. Object program
3. System program
4. Source program

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<summary>Show me the answer</summary>

**Answer:** 1. Operating system

**Explanation:**

* **Operating System:** The operating system manages the computer's hardware and software resources, enabling the execution of programs and providing a user interface.
* **Conclusion:** The operating system deals with the running of the computer.

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#### 106. Which of the following systems software does the job of merging the records from two files into one?

1. Security software
2. Networking software
3. Utility program
4. Documentation system

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<summary>Show me the answer</summary>

**Answer:** 3. Utility program

**Explanation:**

* **Utility Programs:** Utility programs perform specific tasks such as file management, disk cleanup, and merging files.
* **Conclusion:** A utility program merges records from two files.

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#### 107. The term “operating system” means:

1. A set of programs which controls computer working
2. The way a computer operator works
3. Conversion of high-level language into machine code
4. The way a floppy disk drive operates

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<summary>Show me the answer</summary>

**Answer:** 1. A set of programs which controls computer working

**Explanation:**

* **Operating System:** The operating system is a set of programs that manage hardware and software resources, control computer operations, and provide a user interface.
* **Conclusion:** The operating system controls computer working.

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#### 108. The operating system of a computer serves as a software interface between the user and:

1. Hardware
2. Memory
3. Peripheral
4. Screen

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<summary>Show me the answer</summary>

**Answer:** 1. Hardware

**Explanation:**

* **Operating System Interface:** The operating system acts as an intermediary between the user and the computer hardware, enabling users to interact with the hardware without needing to understand its complexities.
* **Conclusion:** The operating system interfaces between the user and hardware.

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#### 109. The primary job of the operating system of a computer is to:

1. Command resources
2. Provide utilities
3. Manage resources
4. Be user-friendly

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<summary>Show me the answer</summary>

**Answer:** 3. Manage resources

**Explanation:**

* **Resource Management:** The primary function of the operating system is to manage hardware and software resources, including CPU, memory, storage, and I/O devices.
* **Conclusion:** The operating system manages resources.

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#### 110. All the time a computer is switched on, its operating system software has to stay in:

1. Main storage
2. Floppy disk
3. Primary storage
4. Disk drive

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<summary>Show me the answer</summary>

**Answer:** 3. Primary storage

**Explanation:**

* **Operating System in Memory:** The operating system must reside in primary storage (RAM) while the computer is running to manage processes, memory, and I/O operations.
* **Conclusion:** The operating system stays in primary storage while the computer is on.

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#### 111. What is the name given to software which can be legally compiled and often used for free?

1. Shareware program
2. Firmware program
3. Public domain program
4. Mindware

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<summary>Show me the answer</summary>

**Answer:** 3. Public domain program

**Explanation:**

* **Public Domain Software:** Public domain software is not protected by copyright and can be freely used, modified, and distributed.
* **Conclusion:** Public domain software is free and legally usable.

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#### 112. What is the operating system used by Macintosh computers?

1. System 7.0
2. XENIX
3. AU/X
4. Either (A) or (B)

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<summary>Show me the answer</summary>

**Answer:** 4. Either (A) or (B)

**Explanation:**

* **Macintosh Operating Systems:** Macintosh computers have used various operating systems, including System 7.0 and XENIX (a UNIX variant).
* **Conclusion:** Macintosh computers have used either System 7.0 or XENIX.

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#### 113. Who is called the overseer and supervisor of all computer activity?

1. Central processing unit
2. Control unit
3. Operating system
4. Application program

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<summary>Show me the answer</summary>

**Answer:** 3. Operating system

**Explanation:**

* **Overseer and Supervisor:** The operating system oversees and supervises all computer activity, including process management, memory management, and I/O operations.
* **Conclusion:** The operating system is the overseer of computer activity.

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#### 114. Can you name the major operating systems used in computers?

1. MS-DOS
2. UNIX
3. OS/2
4. All of the above

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**Answer:** 4. All of the above

**Explanation:**

* **Major Operating Systems:** MS-DOS, UNIX, and OS/2 are all major operating systems used in computers.
* **Conclusion:** All the listed operating systems are major.

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#### 115. Who developed the operating system/2 (OS/2) for running IBM’s new PS/2 family of microcomputers?

1. IBM
2. Bell Laboratories
3. Microsoft Inc.
4. Digital Research Corporation

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<summary>Show me the answer</summary>

**Answer:** 3. Microsoft Inc.

**Explanation:**

* **OS/2 Development:** OS/2 was developed by Microsoft in collaboration with IBM for the PS/2 family of microcomputers.
* **Conclusion:** Microsoft developed OS/2.

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#### 116. Most of the microcomputer’s operating systems like Apple DOS, MS DOS, and PC DOS are called disk operating systems because:

1. They are memory resident
2. They are initially stored on disk
3. They are available on magnetic tapes
4. They are partly in primary memory and partly on disk

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<summary>Show me the answer</summary>

**Answer:** 2. They are initially stored on disk

**Explanation:**

* **Disk Operating Systems:** Disk operating systems (DOS) are stored on disk and loaded into memory when the computer starts.
* **Conclusion:** DOS operating systems are initially stored on disk.

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#### 117. What is the name given to the process of initializing a microcomputer with its operating system?

1. Cold booting
2. Warm booting
3. Booting
4. Boot recording

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<summary>Show me the answer</summary>

**Answer:** 3. Booting

**Explanation:**

* **Booting:** Booting is the process of starting a computer and loading the operating system into memory.
* **Conclusion:** Booting initializes the computer with the operating system.

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#### 118. What is the name of the operating system which was originally designed by scientists and engineers for use by scientists and engineers?

1. XENIX
2. OS/2
3. UNIX
4. MS DOS

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**Answer:** 3. UNIX

**Explanation:**

* **UNIX:** UNIX was developed by scientists and engineers at Bell Laboratories for use in scientific and engineering applications.
* **Conclusion:** UNIX was designed for scientists and engineers.

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#### 119. What are the most important features of Microsoft Windows program?

1. Windows
2. Icons
3. Pull-down menus
4. All of the above

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<summary>Show me the answer</summary>

**Answer:** 4. All of the above

**Explanation:**

* **Windows Features:** Microsoft Windows is known for its graphical user interface (GUI), which includes windows, icons, and pull-down menus.
* **Conclusion:** All the listed features are important in Windows.

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#### 120. What is the name given to the organized collection of software that controls the overall operation of a computer?

1. Working system
2. Operating system
3. Peripheral system
4. Controlling system

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<summary>Show me the answer</summary>

**Answer:** 2. Operating system

**Explanation:**

* **Operating System:** The operating system is a collection of software that manages hardware and software resources and controls the overall operation of a computer.
* **Conclusion:** The operating system controls the computer's operation.

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#### 121. What is the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer user’s productivity?

1. Defined values
2. Default values
3. Fixed values
4. Special values

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<summary>Show me the answer</summary>

**Answer:** 2. Default values

**Explanation:**

* **Default Values:** Default values are pre-set values provided by software to reduce user input and improve productivity.
* **Conclusion:** Default values reduce keystrokes and improve efficiency.

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#### 122. The powerful text editor called PC-Writer can be used by anybody by paying a small fee. Such programs are called:

1. Software
2. Firmware
3. Shareware
4. Mindware

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<summary>Show me the answer</summary>

**Answer:** 3. Shareware

**Explanation:**

* **Shareware:** Shareware is software that is distributed for free on a trial basis, with the option to purchase a license for continued use.
* **Conclusion:** PC-Writer is an example of shareware.

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#### 123. What is the name of the operating system that reads and reacts in terms of actual time?

1. Batch system
2. Real-time system
3. Quick response system
4. Time-sharing system

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**Answer:** 2. Real-time system

**Explanation:**

* **Real-Time Systems:** Real-time systems process data and respond to inputs within strict time constraints, ensuring timely execution of tasks.
* **Conclusion:** Real-time systems react in actual time.

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#### 124. What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?

1. Partitioning
2. Windowing
3. Multitasking
4. Paging

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**Answer:** 3. Multitasking

**Explanation:**

* **Multitasking:** Multitasking allows the operating system to execute multiple programs concurrently by switching between them rapidly.
* **Conclusion:** Multitasking enables concurrent execution of programs.

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#### 125. When did IBM release the first version of its disk operating system DOS version 1.0?

1. 1981
2. 1982
3. 1983
4. 1984

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<summary>Show me the answer</summary>

**Answer:** 1. 1981

**Explanation:**

* **DOS Release:** IBM released DOS version 1.0 in 1981 for its personal computers.
* **Conclusion:** DOS 1.0 was released in 1981.

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#### 126. IBM released its first PC in 1981. Can you name the operating system which was most popular at that time?

1. MS-DOS
2. PC-DOS
3. OS/360
4. CP/M

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<summary>Show me the answer</summary>

**Answer:** 4. CP/M

**Explanation:**

* **CP/M:** CP/M (Control Program for Microcomputers) was the most popular operating system for microcomputers in the late 1970s and early 1980s.
* **Conclusion:** CP/M was the most popular operating system in 1981.

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#### 127. The mathematics software allows the users to directly write and solve problems in arithmetic, trigonometry, algebra, etc. Can you name the person who created this software?

1. Thomas Abraham
2. Yuri Manin
3. Steve Jobs
4. Stephen Wolfram

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<summary>Show me the answer</summary>

**Answer:** 4. Stephen Wolfram

**Explanation:**

* **Mathematica:** Stephen Wolfram created Mathematica, a software system for mathematical computation.
* **Conclusion:** Stephen Wolfram created the mathematics software.

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#### 128. The higher version of the operating systems are so written that programs designed for earlier versions can still be run. What is it called?

1. Upgradability
2. Universality
3. Upward mobility
4. Upward compatibility

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<summary>Show me the answer</summary>

**Answer:** 4. Upward compatibility

**Explanation:**

* **Upward Compatibility:** Upward compatibility ensures that programs designed for earlier versions of an operating system can still run on newer versions.
* **Conclusion:** Upward compatibility allows older programs to run on newer systems.

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#### 129. What is the name of the arrangement whereby several central processing units share one memory?

1. Multitasking
2. Multiprocessing
3. Multiprogramming
4. Concurrent programming

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<summary>Show me the answer</summary>

**Answer:** 2. Multiprocessing

**Explanation:**

* **Multiprocessing:** Multiprocessing involves multiple CPUs sharing a single memory to execute tasks concurrently.
* **Conclusion:** Multiprocessing allows multiple CPUs to share memory.

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#### 130. A graphical-menu-driven operating system allows you to pick up from the menu of choices it displays on the screen. What is the name given to the images which are used in such image-oriented menus?

1. Figure
2. Symbol
3. Icon
4. Model

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<summary>Show me the answer</summary>

**Answer:** 3. Icon

**Explanation:**

* **Icons:** Icons are small graphical images used in menus to represent programs, files, or actions.
* **Conclusion:** Icons are used in graphical menus.

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#### 131. With reference to Windows, a DLL is:

1. Distribution level library
2. Dedicated link library
3. Dynamic link library
4. Distributed library LAN

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<summary>Show me the answer</summary>

**Answer:** 3. Dynamic link library

**Explanation:**

* **DLL:** A DLL (Dynamic Link Library) is a file containing code and data that can be used by multiple programs simultaneously. It allows programs to share functionality without duplicating code.
* **Conclusion:** DLL stands for Dynamic Link Library.

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#### 132. Windows is a(n):

1. Operating system
2. Operating environment
3. User interface
4. Programming platform

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<summary>Show me the answer</summary>

**Answer:** 1. Operating system

**Explanation:**

* **Windows:** Windows is an operating system developed by Microsoft that provides a graphical user interface (GUI) and manages hardware and software resources.
* **Conclusion:** Windows is an operating system.

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#### 133. Microcomputer operating systems are generally:

1. Copy protected
2. Not loaded into the ROM by hardware manufacturers
3. Easily available in the market
4. All of the above

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<summary>Show me the answer</summary>

**Answer:** 4. All of the above

**Explanation:**

* **Microcomputer Operating Systems:** Microcomputer operating systems are often copy-protected, not loaded into ROM, and easily available in the market.
* **Conclusion:** All the listed statements are true.

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#### 134. The part of the computer system which performs the housekeeping functions is called:

1. Interpreter
2. Operating system
3. Compiler
4. Assembler

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<summary>Show me the answer</summary>

**Answer:** 2. Operating system

**Explanation:**

* **Housekeeping Functions:** The operating system performs housekeeping functions such as memory management, process scheduling, and file management.
* **Conclusion:** The operating system handles housekeeping tasks.

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#### 135. An operating system designed to run on only one family of computers is called:

1. PC-DOS
2. Disk operating system
3. CP/M
4. Proprietary operating system

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<summary>Show me the answer</summary>

**Answer:** 4. Proprietary operating system

**Explanation:**

* **Proprietary Operating System:** A proprietary operating system is designed to run on a specific family of computers and is not compatible with other systems.
* **Conclusion:** Proprietary operating systems are specific to one family of computers.

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#### 136. An operating system:

1. Is not required on large computers
2. Is always supplied with the computer
3. Is always written in BASIC
4. Consists of programs that help in the operation of the computer

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<summary>Show me the answer</summary>

**Answer:** 4. Consists of programs that help in the operation of the computer

**Explanation:**

* **Operating System:** The operating system consists of programs that manage hardware and software resources and facilitate the operation of the computer.
* **Conclusion:** The operating system helps in the operation of the computer.

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#### 137. The relationship between operating system software and application software is that:

1. Application software and operating system work independently
2. Operating system monitors application software
3. Application software and operating system work together
4. Application software monitors the operating system

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<summary>Show me the answer</summary>

**Answer:** 3. Application software and operating system work together

**Explanation:**

* **Relationship:** The operating system provides a platform for application software to run and manages resources for it.
* **Conclusion:** The operating system and application software work together.

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#### 138. A proprietary operating system can run on machines made by:

1. Different vendors
2. IBM only
3. A specific vendor
4. None of the above

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<summary>Show me the answer</summary>

**Answer:** 3. A specific vendor

**Explanation:**

* **Proprietary Operating System:** A proprietary operating system is designed to run on machines made by a specific vendor and is not compatible with other systems.
* **Conclusion:** Proprietary operating systems are vendor-specific.

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#### 139. The most popular 16-bit operating system is:

1. CP/M
2. MS-DOS
3. UNIX
4. TRS-DOS

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<summary>Show me the answer</summary>

**Answer:** 2. MS-DOS

**Explanation:**

* **MS-DOS:** MS-DOS (Microsoft Disk Operating System) was the most popular 16-bit operating system for personal computers in the 1980s and early 1990s.
* **Conclusion:** MS-DOS is the most popular 16-bit operating system.

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#### 140. DOS is:

1. A software
2. A data organization system
3. A hardware
4. None of the above

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<summary>Show me the answer</summary>

**Answer:** 1. A software

**Explanation:**

* **DOS:** DOS (Disk Operating System) is a software that manages files, memory, and I/O operations on a computer.
* **Conclusion:** DOS is a software.

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#### 141. A computer program written into a storage medium from which it cannot be accidentally erased is called:

1. Software
2. Firmware
3. Operating system
4. ROM

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<summary>Show me the answer</summary>

**Answer:** 2. Firmware

**Explanation:**

* **Firmware:** Firmware is software that is embedded into hardware and cannot be easily modified or erased.
* **Conclusion:** Firmware is stored in a non-volatile medium.

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#### 142. The first popular microcomputer operating system developed around 1974 is:

1. PC-DOS
2. Apple-DOS
3. MS-DOS
4. CP/M

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<summary>Show me the answer</summary>

**Answer:** 4. CP/M

**Explanation:**

* **CP/M:** CP/M (Control Program for Microcomputers) was the first popular microcomputer operating system, developed in 1974.
* **Conclusion:** CP/M was the first popular microcomputer OS.

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#### 143. A microcomputer operating system which is popular with computer professionals and which can support multitasking is:

1. MS-DOS
2. UNIX
3. CP/M
4. OS

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<summary>Show me the answer</summary>

**Answer:** 2. UNIX

**Explanation:**

* **UNIX:** UNIX is a multitasking operating system popular among computer professionals due to its flexibility and power.
* **Conclusion:** UNIX supports multitasking and is popular with professionals.

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#### 144. The two most popular operating systems for 8- and 16-bit personal computers are:

1. CP/M and CP/M-80
2. MS-DOS and PC-DOS
3. CP/M-80 and MS-DOS
4. MS-DOS and UNIX

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<summary>Show me the answer</summary>

**Answer:** 2. MS-DOS and PC-DOS

**Explanation:**

* **MS-DOS and PC-DOS:** MS-DOS and PC-DOS were the most popular operating systems for 8- and 16-bit personal computers.
* **Conclusion:** MS-DOS and PC-DOS dominated the personal computer market.

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#### 145. UNIX operating system:

1. Is multi-user
2. Is multitasking
3. Can run on PCs and larger systems
4. All of the above

<details>

<summary>Show me the answer</summary>

**Answer:** 4. All of the above

**Explanation:**

* **UNIX:** UNIX is a multi-user, multitasking operating system that can run on PCs, workstations, and larger systems.
* **Conclusion:** UNIX has all the listed features.

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#### 146. An operating system for a large computer is:

1. Developed by the actual user
2. Developed by the buyer
3. Always supplied by the computer supplier
4. Supplied by software vendors

<details>

<summary>Show me the answer</summary>

**Answer:** 3. Always supplied by the computer supplier

**Explanation:**

* **Large Computer OS:** Operating systems for large computers are typically supplied by the computer manufacturer.
* **Conclusion:** The computer supplier provides the OS for large computers.

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#### 147. Which of the following is not an operating system?

1. UNIX
2. MS-DOS
3. PASCAL
4. CP/M

<details>

<summary>Show me the answer</summary>

**Answer:** 3. PASCAL

**Explanation:**

* **PASCAL:** PASCAL is a programming language, not an operating system.
* **Conclusion:** PASCAL is not an operating system.

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#### 148. XENIX can be used only with:

1. IBM-PCs
2. Supercomputers
3. IBM-PC/XTs
4. IBM-PC/ATs

<details>

<summary>Show me the answer</summary>

**Answer:** 4. IBM-PC/ATs

**Explanation:**

* **XENIX:** XENIX is a version of UNIX designed for IBM-PC/ATs and compatible systems.
* **Conclusion:** XENIX is used with IBM-PC/ATs.

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#### 149. The application package is used to:

1. Meet specific needs of a user
2. Run the computer system better
3. Run the compiler smoothly
4. Enable the operating system to control hardware better

