Checksum is used in Internet by several protocols although not at the _________(a) Session layer(b) Transport layer(c) Network layer(d) Data link layerI got this question during an interview.My doubt is from Network Protocols in chapter Network Protocol of Wireless/Mobile

Checksum is used in Internet by several protocols although not at the

1.	Checksum is used in Internet by several protocols although not at the _________(a) Session layer(b) Transport layer(c) Network layer(d) Data link layerI got this question during an interview.My doubt is from Network Protocols in chapter Network Protocol of Wireless/Mobile
Answer» Right choice is (d) Data link layer To explain: 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.

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