In a DMVPN Phase 3 dual-hub architecture, what is the primary role of NHRP?

To replace the need for IPsec encryption by providing secure key exchange

To provide a backup path for spoke-to-spoke traffic when the primary tunnel fails

To route traffic between the two hubs by maintaining a full mesh of tunnels

To dynamically resolve the public IP addresses of spoke routers and enable direct spoke-to-spoke tunnels

In a DMVPN Phase 3 dual-hub topology, which statement best describes the topology and data plane behavior?

All spoke-to-spoke traffic must traverse the hubs because NHRP is not used in Phase 3.

Hubs are connected to each other via a dedicated tunnel, and spokes only connect to one hub at a time.

Spokes form a full mesh of tunnels with each other and with both hubs, and all traffic flows directly between spokes.

Each spoke has a permanent tunnel to both hubs, and spoke-to-spoke tunnels are created on demand using NHRP redirects.

In DMVPN Phase 3, what is the purpose of the NHRP redirect message sent by a hub?

To notify the spoke that the hub is going down and to use the backup hub

To inform a spoke that the destination is reachable via another spoke, triggering shortcut setup

To update the routing table of the spoke with a new route to the destination network

To request the spoke to re-register with the hub because its registration has expired

How do two spokes in a DMVPN Phase 3 network resolve each other's public addresses to establish a shortcut?

The spokes exchange public addresses via the routing protocol updates.

The source spoke sends an NHRP resolution request to the destination spoke's public address, which is learned from the hub's redirect.

The hub sends a unicast NHRP resolution reply to the source spoke with the destination's public address.

The source spoke broadcasts an NHRP query to all routers in the DMVPN cloud.

CCIE Enterprise Infrastructure

Domain 3Objective 3

DMVPN CCIE-ENTERPRISE-INFRASTRUCTURE Practice Questions (Page 1)

Part of the Transport Technologies and Solutions domain, which accounts for 15% of the CCIE-ENTERPRISE-INFRASTRUCTURE exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 3–4 from this objective — we provide 37 practice questions to prepare you well beyond it. (estimate)

37questions here

8free pages

5concepts

15%of the exam

Questions 1–5

1foundation · easy
In a DMVPN Phase 3 dual-hub architecture, what is the primary role of NHRP?
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2foundation · easy
To verify that traffic is flowing directly between two spokes in a DMVPN Phase 3 network, which command output would you examine?
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3foundation · easy
In a DMVPN Phase 3 dual-hub topology, which statement best describes the topology and data plane behavior?
Select an answer first
4foundation · easy
In DMVPN Phase 3, what is the purpose of the NHRP redirect message sent by a hub?
Select an answer first
5foundation · easy
How do two spokes in a DMVPN Phase 3 network resolve each other's public addresses to establish a shortcut?
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