Cisco 400-251 Exam Questions

Question 6 of 952

Which two IPv6 tunnel types support only point-to-point communication? (Choose two.)

manually configured

automatic 6to4

ISATAP

GRE

Correct Answer: A, D

Question 7 of 952

Which two EIGRP packet types are considered to be unreliable packets? (Choose two.)

Question 8 of 952

Before BGP update messages may be sent, a neighbor must stabilize into which neighbor state?

Active

Idle

Connected

Established

Correct Answer: D

Question 9 of 952

Which three statements are correct when comparing Mobile IPv6 and Mobile IPv4 support? (Choose three.)

Mobile IPv6 does not require a foreign agent, but Mobile IPv4 does.

Mobile IPv6 supports route optimization as a fundamental part of the protocol; IPv4 requires extensions.

Mobile IPv6 and Mobile IPv4 use a directed broadcast approach for home agent address discovery.

Mobile IPv6 makes use of its own routing header; Mobile IPv4 uses only IP encapsulation.

Mobile IPv6 and Mobile IPv4 use ARP for neighbor discovery.

Mobile IPv4 has adopted the use of IPv6 ND.

Correct Answer: A, B, D

Question 10 of 952

Refer to the exhibit.
Exam 400-251: Question 10 - Image 1

Which message could contain an authenticated initial_contact notify during IKE main mode negotiation?

message 3

message 5

message 1

none, initial_contact is sent only during quick mode

none, notify messages are sent only as independent message types

Correct Answer: B