Computer MCQ 002

Computer MCQ 002

1.  Which of the following types of tables constraints will prevent the entry of duplicate rows?
(A) Primary key
(B) Unique
(C) Null
(D) Foreign key
(E) None of these 

2.     Which type of switching uses the entire capacity of a dedicated link?
(A) Circuit switching
(B) Virtual Circuit Packet Switching
(C) Datagram Packet Switching
(D) Message Switching
(E) None of these 


3.     The ________ is a device that connects inputs to outputs.
(A) Crosspoint
(B) Crossbar
(C) Modem
(D) RAM
(E) None of these

4.  In _______, each packet of a message follows the same path from sender to receiver.
(A) Circuit switching
(B) Message switching
(C) The virtual appropach to packet switching
(D) The datagram approach to pack-et switching
(E) None of these 

5.     A permanent virtual circuit involves
(A) Connection establishment
(B) Data transfer
(C) Connection release
(D) All of the above
(E) None of these



6.     The sharing of a medium and its path by 2 or more devices is called ________.
(A) Modulation
(B) Encoxing
(C) Line discipline
(D) Multiplexing
(E) None of these  

7.     Which multiplexing technique trans-mits analog signals?
(A) FDM
(B) Synchronous TDM
(C) Asynchronous TDM
(D) Both B and C
(E) None of these 

8.     The search tool used to text that ap-pears in gotherspace is
(A) Gobler
(B) Archie
(C) Mikky
(D) Veronica
(E) None of these

9.     X.21 protocol consists of
(A) Physical and frame levels
(B) Frame and packet levels
(C) Physical, frame and packet lev-els
(D) Only physical level
(E) None of these 

 10.   Array is —
(A) linear data structure
(B) non-linear data structure
(C) complex data structure
(D) simple data structure
(E) None of these

Answers

    1. B           2. C           3. C          4. D            5. B
    6. D           7. A           8. D          9. D          10. A

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