Computer Networking
The Internet Control Message Protocol (ICMP)

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

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Computer Networking
What is the purpose of flow control?

To reassemble segments in the correct order at the destination device.
To ensure that data is retransmitted if an acknowledgment is not received.
To provide a means for the receiver to govern the amount of data sent by the sender.
To regulate the size of each segment.

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