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#Header #IPv4

Question

IPv4: Header checksum ?

Answer

Header checksum – used for error-checking of the header.

* If a packet arrives at a router and the router calculates a different checksum than the one specified in this field, the packet will be discarded.

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IP header
destination before the TTL expires, it is discarded. Protocol – defines the protocol used in the data portion of the IP datagram. For example, TCP is represented by the number 6 and UDP by 17. <span>Header checksum – used for error-checking of the header. If a packet arrives at a router and the router calculates a different checksum than the one specified in this field, the packet will be discarded. Source IP address – the IP address of the host that sent the packet. Destination IP address – the IP address of the host that should receive the packet. Options – used for network testi

Summary

status	not learned	measured difficulty	37% [default]	last interval [days]
repetition number in this series	0	memorised on		scheduled repetition
scheduled repetition interval		last repetition or drill

Details

No repetitions

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