Basic Computer Knowledge(Computer Aptitude ) Questions and Answers

Question 1.  operating systems and utility programs are in a class of software known as
  1.    system software
  2.    BIOS software
  3.    software suites
  4.    sequential software
Explanation:-
Answer: Option A. -> system software
Explanation :
Question 2.  this is a time-sensitive service
  1.    File transfer
  2.    File download
  3.    E-mail
  4.    Internet telephony
Explanation:-
Answer: Option D. -> Internet telephony
Explanation :
Question 3.  a medium for transferring data between two locations is called
  1.    Network
  2.    Modem
  3.    Bus
  4.    Communication channel
Explanation:-
Answer: Option D. -> Communication channel
Explanation :
Question 4.  main storage is also called
  1.    Memory
  2.    Control Unit
  3.    Register Unit
  4.    Accumulator
Explanation:-
Answer: Option A. -> Memory
Explanation :
Question 5.  what was the computer conceived by babbage?
  1.    Games
  2.    Donald Knuth
  3.    Arithmetic Machine
  4.    Analytical Engine
Explanation:-
Answer: Option D. -> Analytical Engine
Explanation :
Question 6.  wireless transmission can be done via
  1.    radio waves
  2.    microwaves
  3.    infrared
  4.    all of the above
Explanation:-
Answer: Option D. -> all of the above
Explanation :
Question 7.  the portion of physical layer that interfaces with the media access control sublayer is called
  1.    physical signalling sublayer
  2.    physical data sublayer
  3.    physical address sublayer
  4.    none of these
Explanation:-
Answer: Option A. -> physical signalling sublayer
Explanation :
Question 8.  user datagram protocol is called connectionless because
  1.    all UDP packets are treated independently by transport layer
  2.    it sends data as a stream of related packets
  3.    both (A) and (B)
  4.    none of these
Explanation:-
Answer: Option A. -> all UDP packets are treated independently by transport layer
Explanation :
Question 9.  which one of the following is a transport layer protocol?
  1.    stream control transmission protocol
  2.    internet control message protocol
  3.    neighbor discovery protocol
  4.    dynamic host configuration protocol
Explanation:-
Answer: Option A. -> stream control transmission protocol
Explanation :
Question 10.  which of these keys is not on the number keypad?
  1.    Ctrl
  2.    Del
  3.    Enter
  4.    Num lock
Explanation:-
Answer: Option A. -> Ctrl
Explanation :
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