Exam 200-101 Topic 7 Question 14 Discussion

Actual exam question for Facebook's 200-101 exam
Question #: 14
Topic #: 7
Refer to the exhibit.

Host A pings interface S0/0 on router 3, what is the TTL value for that ping?

Suggested Answer: A Vote an answer

From the CCNA ICND2 Exam book: "Routers decrement the TTL by 1 every time they forward a packet; if a router decrements the TTL to 0, it throws away the packet. This prevents packets from rotating forever." I want to make it clear that before the router forwards a packet, the TTL is still remain the same. For example in the topology above, pings to S0/1 and S0/0 of Router 2 have the same TTL. The picture below shows TTL values for each interface of each router and for Host B.
Notice that Host A initializes ICMP packet with a TTL of 255:

by Duke at Jan 27, 2026, 01:38 PM

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