Cisco 200-125 Exam

Refer to the exhibit. Host A pings interface S0/0 on router 3. What is the TTL value for that ping?

  • A. 252
  • B. 253
  • C. 254
  • D. 255
Answer: Option B.
Explanation: 

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.

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