最新的HCNP-R&S認證 H12-224-ENU考試題庫

問題1

which of the following statements regarding BGP state machine is false?

A. in idle state, bgp denies all connection requests, this is the initial state of bgp.

B. in established state, bgp peers can exchange update, route-refresh, keepalive, and notification message.

C. In active state,bgp attempts to establish a tcp connection, this is the intermediate state of bgp.

D. A BGP peer relationship can be established only when both BGP peers are in openconfirm state, two bgp peers send update messages to exchange routes.

正確答案: D

問題2

Which of the following is the purpose of management security optimization?

A. To ensure secure access to key services.

B. To achieve secure user access control.

C. To ensure that sensitive management information will not be intercepted.

D. To prevent or reduce external network attacks and harm.

正確答案: C

問題3

a source tree is the shortest path form a multicast source to receiver hosts, it is also called a shortest path tree.

A. TRUE

B. FALSE

正確答案: A

問題4

When the Hold Time parameter negotiated between two BGP peers is 0, no Keepalive messages will be sent.

A. TRUE

B. FALSE

正確答案: A

問題5

The AS_Path attribute cannot take effect within an AS. Therefore, a BGP router will not advertise any Update message received from an IBGP peer to other IBGP peers.

A. TRUE

B. FALSE

正確答案: A

問題6

SDN and NFV are essentially the same concept and both define network function virtualization.

A. TRUE

B. FALSE

正確答案: B

問題7

According to BGP route selection rules, the manually summarized routes generated using the aggregate command are preferred over the automatically summarized routes generated using the summary automatic command.

A. TRUE

B. FALSE

正確答案: A

問題8

Which of the following are highlights of the Service Chain component of the Agile Controller? (Multiple Choice)

A. Services are orchestrated based on the Layer 3 GRE tunnels and service devices can be deployed flexibly.

B. Services are orchestrated automatically, without the need for manual maintenance.

C. Adding or deleting service devices does not change the physical topology of the live network and existing routes.

D. Service orchestration operations are visualized in the topology, simplifying the configuration and management.

正確答案: A,C,D

問題9

Which of the following statements regarding PIM-DM is false?

A. PIM-DM stands for Protocol Independent Multicast-Dense Mode. It is a dense-mode multicast routing protocol.

B. PIM-DM does not have periodic flood-prune processes.

C. PIM-DM assumes that each subnet on a network has at least one receiver station interested in the multicast source.

D. PIM-DM uses the graft mechanism to restore multicast packet forwarding proactively.

正確答案: B

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