單項選擇題For a router connected to two ISPs for redundancy, using IPSLA and static routing, how would you configure uRPF on the uplink interface?()

A.ip verify unicast source reachable-via any
B.ip verify unicast reverse-path
C.ip verify unicast reverse-path loose
D.ip verify unicast reverse-path strict


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1.多項選擇題Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls?()

A.Increase the queue size of the voice class.
B.Guarantee bandwidth during congestion to the voice class with a bandwidth command.
C.Increase the tx-ring of the egress interface.
D.Implement LLQ for the voice class.
E.Decrease the rx-ring of the egress interface.
F.Decrease the queue size of the voice class.

2.單項選擇題What action will a BGP route reflector take when it receives a prefix marked with the community attribute NO ADVERTISE from a client peer?()

A.It will advertise the prefix to all other client peers and non-client peers.
B.It will not advertise the prefix to EBGP peers.
C.It will only advertise the prefix to all other IBGP peers.
D.It will not advertise the prefix to any peers.

3.多項選擇題Which two OSPF LSA types are new in OSPF version 3? ()

A.Link
B.NSSA external
C.Network link
D.Intra-area prefix
E.AS domain

4.多項選擇題Which two tunneling techniques support IPv6 multicasting? ()

A.6to4
B.6over4
C.ISATAP
D.6PE
E.GRE

5.多項選擇題Which two options does Cisco PfR use to control the entrance link selection with inbound  optimization?()

A.Prepend extra AS hops to the BGP prefix.
B.Advertise more specific BGP prefixes(longer mask).
C.Add(prepend)one or more communities to the prefix that is advertised by BGP.
D.Have BGP dampen the prefix.

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Multicast is being deployed in the network, and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast, the network monitoring tools show periodic spikes in link utilization throughout the network, even in areas where the video application is not being used. What could be a possible cause?()

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