JN0-351: Enterprise Routing and Switching, Specialist (JNCIS-ENT)Demo

By Juniper · Question Mode

QuestionQ23

Tunnels

Which statement is accurate about IP-in-IP tunnels?

  • A IP-IP tunnels only support encapsulating IP traffic.
  • B IP-IP tunnels only support encapsulating non-IP traffic.
  • C The TTL in the inner packet is decremented during transit to the tunnel endpoint.
  • D There are 24 bytes of overhead with IP-IP encapsulation.
Explanation

IP-in-IP encapsulation wraps an IP datagram in an outer IP header, so it supports encapsulating IP traffic. The tunnel transit path forwards the outer IP packet; basic IPv4-in-IPv4 encapsulation adds a 20-byte IPv4 header.

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