H31-124_V2.0 Online Practice Questions and Answers

Which of the following statements about LAN switch is correct?

A. LAN switch is transparent for user, it does not modify the data field of the forwarded frame.

B. LAN switch can still operate normally even when loop exists.

C. LAN switch can detect loop according to the contents of the packet.

D. LAN switch can modify the data field of the forwarded frame when necessary.

Which of the following statements is correct regarding virtual router?

A. If multiple routers are configured with the same virtual router ID.they all associate to the same virtual router.

B. If multiple routers associate to the same virtual router, they must be configured with the same virtual router ID and at feast one virtual IP address.

C. If multiple routers associate to the same virtual router, they must be configured with the same virtual router ID and virtual IP address.

D. If multiple routers are configured with the same virtual IP address, they all associate to the same virtual

router.

The VRRP advertfse-lnterval is 2s, preempt mode is enabled, Delay Time is 3s, then which of the following is the Master_Down_Interval time?

A. 2s

B. 4s

C. 9s

D. 6s

Which of the following operations need to be complete before IP FRR configuration?

A. Configure different costs to generate two routes with different costs.

B. Configure the same cost to generate two equal-cost routes.

C. Configure a dynamic routing protocol on the entire network to Implement IP connectivity between nodes.

D. Configure static routes or an IGP to implement IP connectivity between nodes.

Which of the following are two important working stages in PPPoE protocol?

A. Session Stage

B. NCP

C. LCP

D. Discovery Stage

When configuring Diff-Serv in QoS, the edge router on Diff-Serv network classify packets according to its source address, destination address or other parameters, assigning different IP precedence for different packets, while other routers classify packets according to IP precedence.

A. True

B. False

Which of the following statements is correct regarding Hellolnterval in OSPF?

A. The range of Hellolnterval is from 0 to 65535.

B. Hellolnterval can be modified by administraor.The smaller the value, the faster (he topology change discovery.

C. Hellolnterval is 10 seconds for NBMA and broadcast network by default.

D. Hellolnterval is 30 seconds for P2P and P2MP network by default.

Which of the BGP attributes is Optional transitive attribute?

A. AS_PATH

B. MED

C. NEXT_HOP

D. ORIGIN

E. LOCAL_PREF

F. COMMUNITY

Which of the following statements regarding the description of MPLS are correct?

A. Egress LER forwards packets based on IP routing table.

B. Core LSR forwards packets based on label.

C. Ingress LER forwards packets based on label.

D. Core LSR forwards packets based on IP routing table.

Which of the following MPLS TE components is used to set up tunnel?

A. Path calculation

B. Information distribution

C. Packet forwarding

D. Signaling