QUESTION: 109

A company network runs the OSPF protocol, a project in order to understand the OSPF mechanism in the network to perform packet transfer operations, the following description of ospf messages is correct?

The interface sends a Hello packet immediately after joining the OSPF region
LS update packet is sent only when the adjacency relationship is established
When an LsUpdate packet is received, the router must send an LsAck acknowledgment
LS update packet synchronizes the link state database by sending detailed LSA information

Answer(s): A,D

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QUESTION: 110

ISlS protocol In broadcast networks and P2P networks, when the router receives LSP, it
needs to use PSNP to confirm and ensure the synchronization of LSDB

True
False

Answer(s): B

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QUESTION: 111

The correct statement about the difference between OSPFv2 and OSPFv3 is ? Multi-select

BOTH OSPFv2 and OSPFv3 support interface authentication. And OSPFv3 authentication is still based on the fields in the ospf message header
OSPFv3 is similar to OSPFv2 in that it uses a multicast address as the OSPF message destination address
The same type of message exists in OSPFv2, OSPFv3: Hello, DD, LSR, LSU, LSAack, Their message format is the same
OSPFv2 has the protocol number 89 in the IPv4 packet header, OSPFv 3 The next number in the IPv6 message header is 89

Answer(s): B,C,D

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QUESTION: 112

In a network in MPLSVPN, different CE devices can exchange routing information with the same PE device using different routing protocols, and different CE devices can exchange routing information with the same PE The routing protocols used between devices are independent of each other

True
False

Answer(s): A

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