A level Operating System Quiz 1

16 Questions

Quiz Description

This quiz will be focusing on the operating system, its functions, and some importance as well as components. An operating system is the most important software that runs on a computer system because it manages the computer's memory and processes, as well as all of its software and hardware devices. This is more amazing because it also allows you to communicate with the computer without knowing how to speak the computer's language.

An operating system abbreviated OS is therefore a system software that communicates with the hardware and allows other programs to run. Almost every communication device like phones, laptops, computers need operating systems in order to function. An operating system is therefore the most important software that runs on the computer system and manages the computer memory and processes.

This is just a summary and more will be seen on answering the quizzes, so be sure to take the quizzes and learn from it. More computer science quizzes are found here too. Do check them out after this one.
Enjoy!! 

1:

 Access to moving head disks requires three periods of delay before information is brought into memory. The response that correctly lists the three time delays for the physical access of data in the order of the relative speed from the slowest to the fastest is 


Correct
  • 1:
    latency time, cache overhead time, seek time
  • 2:
    transmission time, latency time, seek time
  • 3:
    seek time, latency time, transmission time
  • 4:
    cache overhead time, latency time, seek time
2:

 
If a disk has a seek time of 20 ms, rotates 20 revolutions per second, has 100 words per block, and each track has capacity of 300 words. Then the total time required to access one block is 


Correct
  • 1:
    25
  • 2:
    30
  • 3:
    40
  • 4:
    60
3:

 An unpaged or read-ahead cache associates disk domains with the address of the read and continues for a specific length. The major disadvantage of unpaged cache is that


Correct
  • 1:
    it allows cache domain to contain redundant data
  • 2:
    it does not allow writes to be cached
  • 3:
    its access time is greater than that of paged caching
  • 4:
    read ahead cache domain blocks are necessarily fixed in size
4:

 The maximum amount of information that is available with one position of the disk access arm for a removal disk pack (without further movement of the arm with multiple heads) is 


Correct
  • 1:
    a plate of data
  • 2:
    a track of data
  • 3:
    a block of data
  • 4:
    a cylinder of data
5:

 Disk requests are received by a disk drive for cylinders 5, 25, 18, 3, 39, 8 and 35 in that order. A seek takes 5 m sec per cylinder moved. How much seek time is needed to serve these requests for a Shortest Seek First (SSF) algorithm ? Assume that the arm is at cylinder 20 when the last of these requests is made with none of the requests yet served 


Correct
  • 1:
    125 msec
  • 2:
    295msec
  • 3:
    750 msec
  • 4:
    575 msec
6:

 Disk requests come to a disk driver for cylinders 10, 22, 20, 2, 40, 6 and 38, in that order at a time when the disk drive is reading from cylinder 20. The seek time is 6 ms per cylinder.

The total seek time, if the disk arm scheduling algorithm is first-come-first-served is


Correct
  • 1:
    876 ms
  • 2:
    360 ms
  • 3:
    900 ms
  • 4:
    850 ms
7:

 Disk sheduling involves deciding 


Correct
  • 1:
    which disk should be accessed next
  • 2:
    the order in which disk access requests must be serviced
  • 3:
    the physical location where files should be accessed in the disk
  • 4:
    none of these
8:

 Poor response time are caused by 


Correct
  • 1:
    Process or busy
  • 2:
    High paging rates
  • 3:
    High I/O rate
  • 4:
    All of these
9:

 

A certain moving arm disk storage with one head has following specifications : Number of tracks I recording surface 100 Disk rotation speed 2400 rpm Track storage capacity= 62500 bits

The average latency time (assume the head can move from one track to another only by traversing the entire track) is


Correct
  • 1:
    2.5s
  • 2:
    2.9s
  • 3:
    3.1s
  • 4:
    3.6s
10:

 Which of the following is not an operating system? 


Correct
  • 1:
    windows
  • 2:
    DOS
  • 3:
    linus
  • 4:
    oracle
11:

 When was the first operating system developed? 


Correct
  • 1:
    1950
  • 2:
    1948
  • 3:
    1951
  • 4:
    1949
12:

 Which of the following is the extension of Notepad? 


Correct
  • 1:
    .txt
  • 2:
    .doc
  • 3:
    .xls
  • 4:
    .ppt
13:

 What else is a command interpreter called? 


Correct
  • 1:
    prompt
  • 2:
    kernel
  • 3:
    shell
  • 4:
    command
14:

 What is the full name of FAT? 


Correct
  • 1:
    File attribute table
  • 2:
    File allocation table
  • 3:
    Font attribute table
  • 4:
    Format allocation table
15:

 BIOS is used? 


Correct
  • 1:
    By operating system
  • 2:
    by compiler
  • 3:
    By interpreter
  • 4:
    By application software
16:

 What is the mean of the Booting in the operating system? 


Correct
  • 1:
    Restarting computer
  • 2:
    To turn off
  • 3:
    To scan
  • 4:
    Install the program

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A level Operating System Quiz 1
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