Which two statements about DMVPN with NHRP are true? (Choose two)
A. NHRP shortens the configuration of the hub router.
B. NHRP dynamically provides information about the spoke routers to the hub.
C. NHRP disables multicast
D. The hub router uses NHRP to initiate the GRE tunnel with spokes.
E. The spoke routers act as the NHRP servers.
Yeah correct answer is A and B.
A. NHRP shortens the configuration of the hub router.
B. NHRP dynamically provides information about the spoke routers to the hub.
D – This option is wrong box spokes are the devices who initiate the tunnel using NHRP not the HUB
I would go for
A,B
as well. The “A” is true because NHRP does shorten the configuration – the hub learns dynamically about all spokes without the need for manual configuration/mapping and thus shorting the configuration.
stop providing wrong answers if you do not know the subject matter… right answer is B and D. gre multicast needs to enabled on all routers including hub, therefore A is wrong.
If a traceroute is performed, the first packet flows through the hub and the hub provides NBMA for the spokes to communicate for phase 2 tunnels. D is correct
Are You sure about it?
It is not written – between spokes, and hub is not initiate traffic with spokes it is other way around.
https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/41940-dmvpn.html#dyntun
Dynamic Tunnel Creation for “Spoke-to-Hub” Links:
Configuration of the hub router is shortened and simplified since it does not need to have any GRE or IPsec information about the peer routers. All of this information is learned dynamically via NHRP.
So it would be AB
BD is wrong answer. the perfect answer is AB.