向上级机关汇报工作，反映情况，答复上级机关的询问应使用的文种是（)。A．请示B．意见C．函D．报告

Refer to the exhibit. All routers have Protocol Independent Multicast (PIM) enabled interfaces. On the basis of the configuration provided on routers R1 and R2, which router will take on the func tion of rendezvous point (RP) for the multicast network？ （）

A. both routers R1 and R2

B. router R1

C. router R2

D. none of the routers since they are not configured with static RP

A. Router R1 will only establish full adjacency with the DR and BDR on broadcast multi- access networks.

B. Router R2 has been elected as a DR for the broadcast multiaccess network in OSPF area 1.

C. Routers R1 and R2 are configured as stub routers for OSPF area 1 and OSPF area 2.

D. Router R1 and R2 are configured for a virtual link between OSPF area 1 and OSPF area 2.

E. The Hello parameters on routers R1 and R2 do not m atch.

R1 and R3 have been configured to operate with RIP. After configuring the redistribution between OSPF a nd RIP on R1, no OSPF routes are distributed into RIP. What should be done to correct this problem？ （）

A. The redistribution command should be reentered with the match route - type parameter included.

B. The redistribution command should be reentered wit h the route - map map - tag parameter included.

C. The redistribution command should be reentered with the metric metric - value parameter included.

D. Routes will first need to be distributed into another protocol, and then into RIP.

A. Both outgoing and incoming routing updates on R1 will be permitted because the d istribute - list 20 out Serial0/0 command cannot be used with association with the outgoing interface.

B. All incoming routing updates from R2 will be suppressed, but the outgoing updates will continue to be sent.

C. Both outgoing and incoming routing up dates on R1 will be stopped because of the passive - interface Serial0/0 configuration statement.

D. All outgoing routing updates from router R1 to router R2 will be suppressed, but the inbound updates will continue to be received.

A. The Hello packets will be exchanged and adjacency will be established between routers R2 and R5.

B. The Hello packets will be exchanged but the routers R2 and R5 will become neighbors only.

C. The Hello packets will be dropped and no adjacency will be established between routers R2 and R5.

D. The Hello packets will be dropped but the routers R 2 and R5 will become neighbors.

heir directly connected routers in au tonomous system 100. IGP has been configured on all routers in autonomous system 100 and they successfully exchange routing updates. Traffic originated in autonomous system 200 cannot reach the destination autonomous system 300. What configuration shoul d be done on the routers in autonomous system 100 in order for the traffic coming from autonomous system 200 to be forwarded to autonomous system 300？（）

A. IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned off.

B. IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned on.

C. IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned on.

D. IBGP session mu st be established between routers R1 and R3, and the synchronization must be turned off.

E. IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned off.

F. IBGP session must be established between routers R1 and R3, and the synchronization must be turned on.

ter R1 does not receive a default route to router R2 as in tended. Which configuration change would ensure that R1 would receive a default route from R2？ （）

A. Add the area 1 stub command on routers R1.

B. Add the always keyword to the default - information originate configuration command on router R2.

C. Remov e the default information originate configuration command from router R2 and place it on router R1.

D. Add the ip route 5.0.0.0 255.255.255.0 0.0.0.0 command to router R2.

A. All BGP updates that are received on router R 2 will be sent to routers R3 and R4. Routers R3 and R4 will then forward those BGP updates to router R5

B. None of the BGP updates that are received on router R2 will ever be received by router R5

C. All BGP updates that are received on router R2 will not be sent to routers R3 and R4

D. All BGP updates that are received on router R2 will be sent directly to router R5

A.The path of the packets will be R3 to R2 to R1.

B.The path of the packets will be R3 to R1 to R2.

C.The path of the packets will be both R3 to R2 to R1 and R3 to R1.

D.The path of the packets will be R3 to R1

A. The no auto - summary command has not been issued under the EIGRP process on both routers.

B. Interface E0 on router R1 has not been configured with a secondary IP address of 10.1.2.1/24.

C. EIGRP cannot exchange routing updates with a neighbor‘s router interface that is configured with tw o IP addresses.

D. EIGRP cannot form neighbor relationship and exchange routing updates with a secondary address.