H12-831

H12-831 practice questions, page 11 of 24, with answer review and explanations.

Question 51

As shown in the figure, network administrator A on the R1 router, after modifying the MED value of the routing entry sent to R2 through the routing policy, can control the path of traffic entering AS100.

  1. TRUE
  2. FALSE

Question 52

The OSPF protocol runs between CE and PE, when CE1 advertises the route of the site to CE2. Which of the following description is wrong?

  1. When PE2 receives a BGP route from PE1 that carries a different Domain ID from the local one, it is correct for all LSAs, and PE2 will generate Type5 LSA or Type7 LSA
  2. When PE2 receives the same Domain ID as the local BGP route sent by PE1, PE2 will generate Type3 LSA for Type1 LSA and Type2 LSA
  3. When PE2 receives the same Domain ID as the local BGP route sent by PE1, for Type3 LSA, PE2 will generate Type5 LSA
  4. The Domain ID configured by PE1 can be used as an extended community attribute of BGP and sent along with the route to PE2.

Question 53

In the LDP session establishment process, the active party will first send the Initialization information for parameter negotiation, and if the passive party does not accept the negotiation parameters, it will send _________.

  1. Keepalive Message
  2. Initialization Message
  3. Hello Message
  4. Error Notification Message

Question 54

Regarding MP-BGP, which of the following description is incorrect?

  1. When the PE and CE exchange routes through BGP, you need to create a BGP process for each VPN instance on the CE
  2. MP-BGP's message type and VPNv4 routing policy are the same as BGP-4
  3. MP-BGP needs to assign private network labels to VPNv4 routes
  4. MP-BGP advertises VPNv4 routes through two attributes: MP_REACH_NLRI and MP_UREACH_NLRI

Question 55

By default, which of the following secure MAC address types will be lost after the device restarts?

  1. Black hole MAC address
  2. Sticky MAC address
  3. Secure dynamic MAC address
  4. Secure static MAC address