Question 31
BFD detects the link status immediately after a BFD session is set up. If BFD parameters are modified or deleted at one end of the BFD session, the other end will consider such a modification or deletion as a fault and services will be then affected. Therefore, exercise caution when modifying or deleting BFD parameters.
A. True
B. False
Question 32
Which of the following statements are correct regarding VRRP advertisement message?
A. VRRP has two kinds of advertisement message, one is sent by Master, the other is sent by Slave.
B. VRRP has one kind of advertisement message which is sent by Master.
C. VRRP has one kind of advertisement message which is sent by Slave.
D. VRRP has two kinds of advertisement message, one is used for Master election, the other one is used in stable network after Master election.
Question 33
Complex traffic classification can be performed based on which of the following packet information? (Choose three.)
A. Packet priority
B. Source and destination addresses
C. Total Length of the Packet
D. Source and destination port numbers
Question 34
Which of the following queue scheduling technology can achieve better fairness?
A. WFQ
B. PQ
C. CQ
D. RR
Question 35
Simple traffic classification in QoS classifies packets based on the 5-tuple information, including the source IP address, source port number, protocol number, destination IP address, and destination port number.
A. True
B. False
Question 36
Which LSA is used by OSPF to implement GR?
A. Type-3 LSA
B. Type-5 LSA
C. Type-9 LSA
D. Type-10 LSA
Question 37
None Stop Forwarding (NSF) is an important HA technology. It keeps neighbor relationships unchanged even in the case of a fault in the control plane of the router, protecting key services on the network from interruption.
A. True
B. False
Question 38
Which of the following BFD versions is supported in VRP 5.7?
A. Version 0
B. Version 1
C. Version 2
D. Version 3
Question 39
Which of the following statements about VRRP are true? (Choose three.)
A. VRRP determines the roles of routers (master or backup) in a virtual router based on their priorities.
B. If a backup router works in non-preemption mode and has a higher priority than the masterrouter, it will become the master router unless the master router fails.
C. After a backup router in preemption mode receives a VRRP packet from the master router, it compares its priority with the priority carried in the VRRP packet. If its priority is higher than the priority of the master router, it preempts to be the master router; if not, it remains in the backup state.
D. If two routers competing for the master router have the same priority, the router with a higher interface IP address becomes the master router.
Question 40
Which of the following statements about VRRP are true? (Choose three.)
A. VRRP is a redundancy protocol designed for a multicast- or broadcast-capable LAN such as the Ethernet. VRRP ensures that traffic is switched to another router when the next-hop router for a host on the LAN fails. This guarantees the reliability and non-stop forwarding of services.
B. In VRRP, two virtual router ID and a virtual IP address need to be configured on a router to generate a virtual MAC address. A virtual router is formed.
C. Hosts on a network can communication with a virtual router without knowing any information about physical routers on the network.
D. A virtual router consists of a master router and several backup routers. The master router forwards packets. When the master router fails, a backup router
