多項選擇題Which descriptions of Netflow is correct？（）

A.By default，Netflow records bidirectional IP traffic flow.
B.Netflow answers questions regarding IP traffic：who，what，where，when，and how
C.Netflow accounts for both transit traffic and traffic destined for the router.
D.Netflow returns the subinterface information in the flow records.


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1.多項選擇題Which three attribute-value pairs （AVPs） must be present in L2TPv3 ICRQ messages？ （）

A.PW capabilities list
B.Message type
C.Assigned control connection ID
D.PW type
E.Remote session ID
F.Hostname

2.單項選擇題What best describes the usage of Route-Target rewrite？（）

A.Route-Target Rewrite is mainly used in Inter-AS MPLS-VPN deployments and is configured at the PErouter in originating AS ASBR to avoid misconfiguration in Route-Target assignment for VPN configurations.
B.Route-Target Rewrite is mainly used in Inter-AS MPLS-VPN deployments and is configured at the route-Reflector in originating AS ASBR to avoid misconfiguration in Route-Target assignment for VPN configurations.
C.Route-Target Rewrite is mainly used in Inter-AS MPLS-VPN deployments and is configured at the ASBR to avoid misconfiguration in Route-Target assignment for VPN configurations.
D.None of the above.

3.多項選擇題Select the three best answers which best describe Private Network-to Network Interface （PNNI） in an ATM network.（）

A.It is the Routing protocol used between ATM switches
B.PNNI uses the same Dijsktra algorithm for SPF calculation
C.PNNI and OSPF use the same Database to make cohesive decision for packet forwarding
D.PNNI measures line capacities and delays in addition to simple cost metrics

4.單項選擇題What OSPF LSA is used to support MPLS-traffic Engineering ？（）

A.External LSA （Type 5 ）
B.Opaque LSA （Type 9 ）
C.Opaque LSA （Type 10 ）
D.Opaque LSA （Type 11 ）
E.NSSA LSA （Type 7 ）

5.多項選擇題Select the two answers that best describe the IP Event Dampening feature（）

A.The IP Event Dampening uses exponential decay mechanism to suppress the effects of excessive interface flapping
B.BGP Operators use IP Event Dampening to suppress the effect of unstable internet Routes
C.The IP Event Dampening works with routing protocols by stopping the announcement of dampened interface subnets in their updates
D.When IP Event Dampened internet routes resch their re-use limit BGP installs them in the Routing Table and announces them to other BGP speakers