Computer Networking
An error-detecting code inserted as a field in a block of data to be transmitted is known as

Checksum
Frame check sequence
flow control
None of these
Error detecting code

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Computer Networking
The Internet Control Message Protocol (ICMP)

reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
None of these
provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
All of these
allows gateways to send error a control messages to other gateways or hosts

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