Question 71
If both the ospf cost and bandwidth-reference commands are configured on an interface, the value set in the ospf cost command is used as the cost of the interface.
A. True
B. False
Question 72
The vlink-peer command is used to specify a peer IP address for setting up a virtual link.
A. True
B. False
Question 73
The bandwidth-reference parameter is measured in Mbit/s.
A. True
B. False
Question 74
Which of the following statements about BFD are true? (Choose three.)
A. It cannot be used to detect MPLS networks.
B. It provides low-load and short-duration detection for paths between adjacent forwarding engines.
C. It provides a unified mechanism for detecting all types of media and BFD-supporting protocols.
D. It is a bidirectional detection mechanism.
Question 75
Which of the following statements about the Monitor Link group is false?
A. A Monitor Link group has uplink and downlink interfaces.
B. A Monitor Link group has one uplink interface and several downlink interfaces.
C. In a Monitor Link group, the status of the downlink interface changes in accordance with the status of the uplink interface.
D. The Smart Link group can only serve as a downslink interface.
Question 76
An OSPF neighbor relationship fails to be established and the display ospf error command output is as follows.Which of the following is the probable cause?
A. Router IDs conflict.
B. Area IDs are mismatched.
C. Network masks are inconsistent.
D. Authentication types are inconsistent.
Question 77
A network administrator needs to construct a small-scale network containing only 22 hosts and the ISP assigns only one public IP address as the egress address.Which of the following addresses can be used by the network administrator to plan the network?
A. 10.11.12.16/28
B. 172.31.255.128/27
C. 192.168.1.0/28
D. 209.165.202.128/27
Question 78
Which of the following statements about state transition are true? (Choose three.)
A. The neighbor state machine transitions from the Loading state to the Full state if a LoadingDone event occurs.
B. The neighbor state machine transitions from the Exstart state to the Full state if a NegotiationDone event occurs.
C. The neighbor state machine transitions from the Exchange state to the Full state if an ExchangeDone event occurs.
D. The neighbor state machine transitions from the Exchange state to the Loading state if an ExchangeDone event occurs.
Question 79
On a non-broadcast network, OSPF has two operating modes: NBMA and P2MP.
A. True
B. False
Question 80
The most remarkable characteristic of OSPF is that OSPF supports the link-state algorithm.
A. True
B. False
