單項選擇題What does the command ip pim send-rp-discovery scope 16 achieve？（）

A.it enables PIM BSR
B.it makes the router an Auto-RP mapping agent
C.it advertises the router as an RP with Auto-RP
D.it makes the router an Auto-RP client


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1.單項選擇題What is the default behaviour of PIM-SSM If there are multiple equal-cost paths to the multicast source？（）

A.It will send the join only to the neighbor with the highest IP address.
B.It will send the join only to the neighbor with the lowest IP address.
C.It will send the join in a round-robin fashion across all neighbors.
D.It will send the join to all neighbors.

2.單項選擇題What is the RP for IPv6 multicast address FF76：0130：2001：db8：3811：：2323？（）

A.2001：db8：3811：：1
B.2001：db8：3811：：2323
C.2001：db8：3811：：0130
D.2001：db8：3811：：3
E.2001：db8：3811：：6

3.多項選擇題Which three factors have the biggest influence on OSPF scalability？（）

A.Flooding paths and redundancy
B.Amount of routing information in the OSPF area or routing domain
C.Number of routers with Cisco Express Forwarding enabled
D.Number of neighbor adjacencies
E.Other routing protocols in use
F.OSPF timer reconstruction negotiation
G.Redistribution with BGP neighbors
H.Redistribution with other IGP routing protocols， such as RIP or EIGRP

4.單項選擇題Two BGP peers connected through a routed firewall are unable to establish a peering relationship. What could be the most likely cause？ （）

A. BGP peers must be Layer 2-adjacent
B. EBGP multihop is not configured
C. The firewall is not configured to allow IP protocol 89
D. The firewall is not configured to allow UDP 179.

5.單項選擇題

Refer to the exhibit. Users on the 199.155.24.0 network are unable to reach the 172.16.10.0 network. What is the most likely solution？（）

A. Router ISP1 should be configured to peer with router B
B. Router ISP2 should be configured with no synchronization
C. Router ISP1 should be configured with no synchronization
D. Router ISP2 should be configured with no auto-summary.
E. Router ISP1 or IPS2 should be configured with network 176.16.10.0 mask 255.255.255.0