GATE CS 2017 Set 2 — Question 20
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Computer Networks → Network Layer: Addressing → IPv4 Packet & Fragmentation
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Question
The maximum number of IPv4 router addresses that can be listed in the record route (RR) option field of an IPv4 header is ________.
Correct answer
9 to 9
Solution
1.The maximum size of the IPv4 header is 60 bytes.
2.The base IPv4 header is 20 bytes, leaving a maximum of 40 bytes for the options field.
3.The Record Route (RR) option consists of a 1-byte type field, a 1-byte length field, and a 1-byte pointer field, totaling 3 bytes of overhead.
4.The remaining space for IP addresses is bytes.
5.Each IPv4 address occupies 4 bytes.
6.The maximum number of addresses is .
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