CCIE CCIE Enterprise Infrastructure 3

Question 1

Which Cisco feature enables automatic failover of Layer 3 gateway redundancy using virtual IP and MAC addresses?

Accepted Answer

All of the above provide gateway redundancy

Answer

VRRP

Answer

HSRP

Answer

GLBP

Question 2

In MPLS, what is the label imposed at the ingress PE router called?

Accepted Answer

Transport label

Answer

VPN label

Answer

EXP label

Answer

Penultimate label

Question 3

What is Penultimate Hop Popping (PHP) in MPLS?

Accepted Answer

Removing the transport label at the second-to-last hop

Answer

Adding a label at the last P router

Answer

Swapping labels at the egress PE

Answer

Distributing labels via LDP

Question 4

Which 802.1Q feature allows traffic from multiple VLANs to traverse a single physical link between switches?

Accepted Answer

Trunk port

Answer

Port channel

Answer

Access port

Answer

Routed port

Question 5

In OSPF, what mechanism prevents routing loops by ensuring non-backbone areas communicate only through Area 0?

Accepted Answer

Backbone requirement

Answer

SPF algorithm

Answer

DR/BDR election

Answer

LSA flooding

Question 6

Which technology combines multiple physical interfaces into one logical interface for increased bandwidth and redundancy?

Accepted Answer

EtherChannel / LACP

Answer

HSRP

Answer

VSS

Answer

Flex Links