(A) carrer signal
(B) baseband signal
(C) primary signal
(D) none of the above
Tag: Data Communication and Networking Mcqs
Start and stop bits are used in serial communication for:
(A) error detection
(B) error correction
(C) synchronization
(D) slowing down the communication
baud means:
(A) the number of bits transfered per unit time
(B) the number of byts transfered per unit time
(C) the rate at which signals changes
(D) none of the above
The topology with highest reliability is:
(A) bus topology
(B) ring topology
(C) star topology
(D) mesh topology
Which of the following is wrong example of a network layer:
(A) Internet Protocol (IP)-APARENT
(B) X-25 Packet Level Protocol(PLP)-ISO
(C) Source routing and domain naming-USENET
(D) X-25 Packet Level 2-ISO
Error detection at the data link level is achieved by:
(A) bit stuffing
(B) cyclic reduancy codes
(C) hamming codes
(D) equilization
The method of communication in which transmission takes place in both directions but only in one direction at a time is called:
(A) Simplex
(B) Four wire circuit
(C) Full duplex
(D) Half duplex
Protocols are:
(A) Agreements on how communication components and DATE’s are to communicate
(B) Local communications channels used for transfering data
(C) Physical communications channels used for transfering data
(D) None of the above