An IPv4 packet has arrived with the first few hexadecimal digits as shown below. How many hops can this packet travel before being dropped? The data belong to what upper-layer protocol? ( 5400001800100110040601...) 16
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Correct answer: D. 4 hops, TCP
Explanation
Byte 9 (TTL) is 04 and byte 10 (protocol) is 06. TTL 4 means 4 more hops; protocol 6 is TCP.
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