Question 1

Which of the following statements is false about the default processing of the next hop address when a BGP device advertises a route?

Options :

A :

When advertising a locally originated route to an IBGP peer, a BGP device sets the next hop address to the IP address of its interface connected to the peer.

B :

When advertising a non-labeled route received from an EBGP peer to an IBGP peer, a BGP device changes the next hop address to the IP address of its interface connected to the IBGP peer.

C :

When advertising a route to an EBGP peer, a BGP device sets the next hop address to the IP address of its interface connected to the peer.

D :

A BGP device does not change the next hop address of a route if the route is received from an IBGP peer and is to be sent to another IBGP peer.

Answer: B

Question 2

In BGP, the Origin attribute is used to identify the origin of a route. Which of the following statements are true about the Origin attribute?

Options :

A :

If a route is imported to BGP by the originator using the network command, the Origin attribute of the BGP route is displayed as i in the BGP routing table.

B :

If a route is learned through EGP, the Origin attribute of this BGP route is displayed as ? in the BGP routing table.

C :

If multiple routes carry the same destination address but different Origin attributes and all other route selection conditions are the same, BGP selects the optimal route according to the Origin attribute in the following order: IGP > EGP > Incomplete.

D : This attribute is a well-known mandatory attribute.

Answer: A,C,D

Question 3

On Huawei switches, which of the following planes provides network information and forwarding entries that are mandatory for data plane forwarding?

Options :

A : Forwarding plane

B : Control plane

C : Data plane

D : Monitoring plane

Answer: B

Question 4

OSPF routers exchange Hello packets to establish neighbor relationships. The Hello packet sending modes vary by network type. On which of the following types of networks are Hello packets multicast?

Options :

A : NBMA

B : P2MP

C : P2P

D : Broadcast

Answer: C,D

Question 5

As shown in the figure, data traffic is forwarded in tunnel mode along the path of STA -> HAP -> HAC -> upper-layer network before roaming. What is the flow direction of data traffic after Layer 3 roaming?

Options :

A : STA -> FAP -> FAC -> HAC -> HAP -> HAC -> Upper-layer network

B : STA -> FAP -> FAC -> HAC -> Upper-layer network

C : STA -> FAP -> FAC -> Upper-layer network

D : STA -> FAP -> FAC -> HAC -> HAP -> Upper-layer network

Answer: B

Confidently Practice Online with Free H12-821_V1.0 Exam Cram

Buying Options: