COMPUTER NETWORKING

DATA LINK LAYER WIRED NETWORKS

DATA LINK CONTROL DLC

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A ____ error means that two or more bits in the data unit has changed.
A
Burst
B
Double bit
C
Single bit
D
Checksum
Explanation: 

Detailed explanation-1: -The term burst error means that 2 or more bits in the data unit have changed from 1 to 0 or from 0 to 1.

Detailed explanation-2: -If there is change in two or more bits of data sequence of transmitter to receiver, it is called “Multiple bit error”. This type of error occurs in both serial type and parallel type data communication networks.

Detailed explanation-3: -Types of Errors Multiple bits error − In the received frame, more than one bits are corrupted. Burst error − In the received frame, more than one consecutive bits are corrupted.

Detailed explanation-4: -In coding theory, burst error-correcting codes employ methods of correcting burst errors, which are errors that occur in many consecutive bits rather than occurring in bits independently of each other. Many codes have been designed to correct random errors.

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