Cisco ENCOR Ultimate 5

Question 1

Which multicast protocol is used between a multicast-capable router and directly connected hosts to manage group membership?

Accepted Answer

IGMP (Internet Group Management Protocol)

Answer

IGMP operates between hosts and their directly connected routers to signal multicast group membership, enabling the router to know which groups have interested receivers.

Question 2

In PIM Sparse Mode, what is the role of the Rendezvous Point (RP)?

Accepted Answer

It serves as the meeting point where sources and receivers converge to build the multicast distribution tree

Answer

The RP is a central router where PIM Sparse Mode sources register and receivers join, forming the shared distribution tree before switching to source-specific trees.

Question 3

A network engineer uses RESTCONF to retrieve device configuration. Which data format does RESTCONF natively support that NETCONF does not?

Accepted Answer

JSON

Answer

RESTCONF supports both XML and JSON encoding of YANG-modeled data, while NETCONF exclusively uses XML as its data encoding format.

Question 4

Which feature prevents a BGP router from advertising a route back to the neighbor from which it was learned, used primarily in iBGP to prevent routing loops?

Accepted Answer

BGP Split Horizon

Answer

BGP Split Horizon (iBGP split horizon rule) prevents a router from readvertising iBGP-learned routes to other iBGP peers, requiring route reflectors or full mesh to overcome this.

Question 5

Which virtualization technology allows multiple logical router instances to share a single physical Cisco router platform, each with its own routing table and interfaces?

Accepted Answer

VRF (Virtual Routing and Forwarding)

Answer

VRF creates separate virtual routing instances on a single physical router, each maintaining independent routing and forwarding tables for traffic isolation.

Cisco ENCOR Practice Test

Cisco ENCOR Practice Test

Cisco ENCOR Ultimate 5