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OSPFv3 Questions



Question 1
Which authentication method does OSPFv3 use to secure communication between neighbors?
A. plaintext
B. MD5HMAC
C. PKI
D. IPSec

Answer: D
Question 2
Which field is specific to the OPSFv3 packet header, as opposed to the OSPFv2 packet header?
A. checksum
B. router ID
C. AuType
D. instance ID

Answer: D
Question 3
Like OSPFv2, OSPFv3 supports virtual links.Which two statements are true about the IPv6 address of a virtual neighbor? (Choose two)
A. It is the link-local address, and it is discovered by examining the hello packets received from the virtual neighbor.
B. It is the link-local address, and it is discovered by examining link LSA received by the virtual neighbor.
C. It is the global scope address, and it is discovered by examining the router LSAs received by the virtual neighbor.
D. Only prefixes with the LA-bit not set can be used as a virtual neighbor address.
E. It is the global scope address, and it is discovered by examining the intra-area-prefix-LSAs received by the virtual neighbor.
F. Only prefixes with the LA-bit set can be used as a virtual neighbor address.

Answer: E F
Question 4
Which three statements are true about OSPFv3? (Choose three)
A. The only method to enable OSPFv3 on an interface is via the interface configuration mode.
B. Multiple instances of OSPFv3 can be enabled on a single link.
C. There are two methods to enable OSPFv3 on an interface, either via the interface configuration mode or via the router configuration mode.
D. For OSPFv3 to function, IPv6 unicast routing must be enabled.
E. For OSPFv3 to function, IPv6 must be enabled on the interface.
F. Only one instance of OSPFv3 can be enabled on a single link.

Answer: B D E
Question 5
Two routers are trying to establish an OSPFv3 adjacency over an Ethernet link, but the adjacency is not forming. Which two options are possible reasons that prevent OSPFv3 to form between these two routers? (Choose two)
A. mismatch of subnet masks
B. mismatch of network types
C. mismatch of authentication types
D mismatch of instance IDs
E. mismatch of area types

Answer: D E
Question 6
Consider an OSPFv3 network with four parallel links between each pair of routers. Which measure can you use to reduce the CPU load and at the same time keep all links available for ECMP?
A. Configure some interfaces as passive interface.
B. Configure ipv6 ospf priority 0 on some interfaces.
C. Configure some routers with a distribute list in ingress of the OSPFv3 process.
D. Configure ipv6 ospf database-filter all out on some interfaces.

Answer: D
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