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Exam JN0-348 topic 1 question 69 discussion

Actual exam question from Juniper's JN0-348

Question #: 69
Topic #: 1

[All JN0-348 Questions]

Which statement is true about IP-IP tunnels?

A. The time-to-live value of the original packet is decremented.
B. IP-IP tunnels are protocol agnostic.
C. The packet is encapsulated unchanged before entering the tunnel.
D. The packet header is replaced before entering the tunnel.

Show Suggested Answer

Suggested Answer: B 🗳️

by denii_dg at April 12, 2020, 6:16 p.m.

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denii_dg

Highly Voted 5 years ago

IP tunnel carries only IP protocol. GRE tunnel doesn't care about underlying protocols. Original TTL value is decremented on IP-tunnel encapsulation.

upvoted 11 times

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boyseven777

Highly Voted 4 years, 10 months ago

A. ref.: RFC 1853; RFC 2003

upvoted 7 times

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julin_10

Most Recent 1 year, 4 months ago

Selected Answer: A

The time-to-live value of the original packet is decremented.

upvoted 1 times

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svregaz

2 years, 10 months ago

Selected Answer: A

TTL has to be decremented and ipip only carries IP

upvoted 1 times

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alexshang

4 years, 1 month ago

A is correct. GRE tunnel is protocol agnostic

upvoted 2 times

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kemr

4 years, 2 months ago

The encapsulator does not change the inner IP header, except to decrement the time to live (TTL), and it remains unchanged during its delivery to the tunnel endpoint. A is the correct answer

upvoted 3 times

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