What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)

The correct answer is B. It can support multiple IPv6 subnets on a single link. D. It routes over links rather than over networks.. B is correct: OSPFv3 can advertise and support multiple IPv6 prefixes (subnets) on a single link, whereas OSPFv2 is tightly coupled to one subnet per interface. This gives OSPFv3 greater flexibility in multi-prefix link scenarios. D is correct: OSPFv3 was redesigned to operate pe

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Question

What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)

Options

AIt requires the use of ARP.
BIt can support multiple IPv6 subnets on a single link.
CIt supports up to 2 instances of OSPFv3 over a common link.
DIt routes over links rather than over networks.

How the community answered

(35 responses)

A
6% (2)
B
91% (32)
C
3% (1)

Explanation

B is correct: OSPFv3 can advertise and support multiple IPv6 prefixes (subnets) on a single link, whereas OSPFv2 is tightly coupled to one subnet per interface. This gives OSPFv3 greater flexibility in multi-prefix link scenarios. D is correct: OSPFv3 was redesigned to operate per-link rather than per-network/subnet. This means the routing relationships (adjacencies) are formed based on links, and network prefix information is carried in separate LSA types (Type-8 and Type-9), decoupling the protocol operation from the addressing. A is incorrect: OSPFv3 runs over IPv6, which uses NDP (Neighbor Discovery Protocol) for address resolution - not ARP, which is IPv4-specific. C is incorrect: OSPFv3 supports multiple simultaneous instances over a common link (identified by an Instance ID field in the OSPFv3 header), but the limit is not specifically two instances.

Topics

#OSPFv3#OSPFv2#IPv6#link-based routing

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