Operating Systems Concepts - 01

01. Which of the key is used to close the active window?

  • 1Ctrl+F4
  • 2Alt+F4
  • 3Alt+F6
  • 4Ctrl+F5
Answer:- 1
Explanation:-

Solution:
Alt+F4 closes the current window.

02. Which of the following capabilities is required for a system program to execute more than one program at a time?

  • 1word processing
  • 2compiling
  • 3virtual memory
  • 4multitasking
Answer:- 1
Explanation:-

Solution:
In computing, multitasking is the concurrent execution of multiple tasks (also known as processes) over a certain period of time. New tasks can interrupt already started ones before they finish, instead of waiting for them to end. As a result, a computer executes segments of multiple tasks in an interleaved manner, while the tasks share common processing resources such as central processing units (CPUs) and main memory.

03. The principles of structured programming forbid the use of

  • 1WHILE-DO
  • 2GOTO
  • 3IF-THEN-ELSE
  • 4DO-WHILE
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

04. Which of the following is true about pseudocode

  • 1A machine language
  • 2An assembly language
  • 3A high-level language
  • 4None of the above
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

05. The primary purpose of an operating system is to:

  • 1make computer easier to use
  • 2keep system programmers employed
  • 3make the most efficient use of the hardware
  • 4allow people to sue the computers
Answer:- 1
Explanation:-

Solution:
The primary purpose of an operating system is to make computer easier to use.

06. Which of the following is a measure to test how good or bad a modular design is

  • 1Module strength
  • 2Module coupling
  • 3Static analysis
  • 4All of the above
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

07. The primary job of the operating system of a computer is to

  • 1command resources
  • 2manage resources
  • 3provide utilities
  • 4be user friendly
Answer:- 1
Explanation:-

Solution:
The primary job of the operating system of a computer is to manage resources

08. Assembler language

  • 1is usually the primary user interface
  • 2requires fixed-format commands
  • 3is a mnemonic form of machine language
  • 4is quite different from the SCL interpreter
Answer:- 1
Explanation:-

Solution:
Assembler language is a mnemonic form of machine language

09. A critical region is

  • 1a program segment that has not been proved bug-free
  • 2a program segment that often causes unexpected system crashes
  • 3a program segment where shared resources are accessed
  • 4one which is enclosed by a pair of P and V operations on semaphores
Answer:- 1
Explanation:-

Solution:
A critical region is one which is enclosed by a pair of P and V operations on semaphores

10. The function(s) performed by the paging software is (are)

  • 1Implementation of the access environment for all programs in the system
  • 2Management of the physical address space
  • 3Sharing and protection
  • 4All of the above
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

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