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Wireless Mobile Communications
Network Protocols
Q
Checksum is used in Internet by several protocols although not at the _________
AA. Session layer
BB. Transport layer
CC. Network layer
DD. Data link layer
Correct Answer:
D. D. Data link layer
Explanation:
The checksum is used in the Internet by several protocols although not at the data link layer. Like linear and cyclic codes, the checksum is based on the concept of redundancy. Several protocols still use the checksum for error detection.