COMPUTER NETWORKING

DATA LINK LAYER WIRED NETWORKS

DATA LINK CONTROL DLC

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What form of error correction does TCP use?
A
Parity Bits
B
FEC
C
CRC
D
ARQ
Explanation: 

Detailed explanation-1: -Automatic Repeat Request (ARQ) is an error-control mechanism for data transmission which uses acknowledgements (or negative acknowledgements) and timeouts to achieve reliable data transmission over an unreliable communication link.

Detailed explanation-2: -Error detection and correction in TCP is achieved through the use of three simple tools: checksum, acknowledgment, and time-out. Checksum : Each segment includes a checksum field which is used to check for a corrupted segment.

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