Online Access Free H12-831-ENU Exam Questions

As shown in the figure, configure a backhaul summary route 10.0.0.0/24 on border route R1.

The next hop points to R2. At the same time, the default route to the external network is configured. At this point, routing black holes will appear. Which of the following statements about routing black holes is correct? (Multiple choice)

• A.If the terminal in the network sends data packets to the network segment that does not appear on the internal network, a loop will occur
• B.Routing black hole has no effect on the network and can be ignored
• C.Precise routing summary can avoid routing black hole
• D.Configuring black hole routing can solve the routing black hole problem

Part of the configuration of R1 is as follows. Which statement about OSPF on R1 is correct?

• A.The device type of R1 is Leve-2
• B.The device type of R1 is Level-1
• C.The device type of R1 cannot be determined
• D.The device type of R1 is Level-1-2

Which of the following description of "packet marking" is incorrect?

• A.The MAC of the message can be marked
• B.The 802.1Q information of Vlan packets can be marked
• C.The QoS information field of the packet can be marked
• D.DSCP IP Precedence information of IP packets can be marked

In an MPLS network, SRs running the DP protocol exchange LDP messages to implement functions such as neighbor discovery, session establishment and maintenance, and label management. To ensure the reliability of message delivery, all LDP messages are sent and received based on TCP connections.

• A.FALSE
• B.TRUE

In an MPLS domain, LSR can be divided into Ingress LSR, Transit LSR and Egress LSR according to the different processing methods of LSR for data. For the same FEC, a certain LSR can be the Ingress LSR of the FEC or the FEC Transit LSR.

• A.FALSE
• B.TRUE