H12-831

H12-831 practice questions, page 17 of 24, with answer review and explanations.

Question 81

In addition to the virtual link, what type of IPv6 address is the source IPv6 address of the Hello packet of OSPFv3?

  1. IPv6 anycast address
  2. Unique local address
  3. Global unicast address
  4. Link local address

Question 82

OSPFv2 is an IGP running on an IPv4 network, OSPFvV3 is an ICP running on an IPv6 network. OSPFv3 and OSPFv2 have the same message types, including Hallo messages, DD messages, LSU messages, LSU messages and SACK messages. Regarding OSPFv3 packets, which of the following statements is correct?

  1. OSPFv3 uses the authentication field in the header of the message to complete message authentication
  2. OSPFv3 uses the link-local address as the source address of the sent message, and the message can be forwarded outside the range of the originating link
  3. OSPFv3 uses IPv6 multicast addresses FFO2::5 and FFO2:.6 to send OSPFv3 packets
  4. The Hello packet of OSPFv3 carries the IPv6 address prefix list of the router interface

Question 83

Which of the following regular expressions can only match BGP routing entries that pass through AS200 and then AS300?

  1. 200$|300$
  2. ^200|^300
  3. _(200 300)_
  4. _[200 300]_

Question 84

Configure under a certain interface: isis timer hello 5 leve1-2, which of the following statements is correct?

  1. The interval for sending Level-2 hello packets on this interface is 5s
  2. The hello packet sending interval of Level-1 and Leval-2 of this interface is 3s.
  3. The interval for sending Level-2 CSNP packets of this interface is 5s
  4. The interval for sending Level-1 hello packets on this interface is 5s

Question 85

In the test phase of cutover, which standards that can indicate the test has been completed?

  1. The configuration check result of the IP device is normal as the standard
  2. Test network business as normal as the standard
  3. The upper-layer application service test carried by the network is normal as the standard
  4. Check that the network is running normally as a standard