單項(xiàng)選擇題If two routers, both reachable from one another, originate functionally equivalent type 2 external- LSAs (i.e,same destination, cost and non-zero forwarding address ), Which of the following statements wouldapply ?()

A.Two LSAs will exist in the network for this destination, and both will be used
B.Two LSAs will exist in the network for this destination, but only the one generated by the highest RID ASBR will be used
C.Only the LSA generated by the highest RID ASBR will exist in the network
D.Only the LSA generated by the lowest RID ASBR will exist in the network


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1.多項(xiàng)選擇題Assume two routers on the same subnet, R1 and R2, both configured for HSRP. R1 has a priority of 120.Which of the following HSRP interface configurations will always result in the R2 becoming the primary?()

A.standby 1 priority 110
B.standby 1 priority 120
C.standby 1 priority 130
D.standby 1 priority 110 preempt
E.standby 1 priority 120 preempt
F.standby 1 priority 130 preempt

2.多項(xiàng)選擇題If the OSPF protocol is used to connect customer edge (CE) routers to service provider edge(PE) routers in the VPN backbone, which two options best describe the use of SHAM links?()

A.A sham-link is created between any twoo VPN sites that belong to the same OSPF area and share an OSPF backdoor link
B.A sham-link is seen as an intra-area link between PE routers,an OSPF adjacency is created and data base is exchanged
C.A SHAM link is created between two directly connected PE routers so that it is preferred over the low speed backdoor door
D.A SHAM link is part of OSPF network of MPLS-VPN provider

3.單項(xiàng)選擇題What is true regarding Autonomous Systems (AS )?()

A.AS numbers are assigned by the IANA
B.AS numbers are used by BGP (Border Gateway protocol ) to exchange IP routing information with neighboring AS
C.In the internet, an Autonomous System (AS) is a collection of IP networks and routers under the control
D.All of the Above

4.單項(xiàng)選擇題Which command will display the MPLS label binding for IP prefix 1.1.1.0 on the router?()

A.show tag-switching tdp binding 1.1.1.0/24
B.show tag-switching tdp bindings neighbor 1.1.1.0
C.show tag-switching interface e0/0
D.A and B both will show the binding.
E.All of the above.

5.多項(xiàng)選擇題What are the differences between LLQ and CBWFQ?()

A.LLQ supports the addition of strict priority queuing
B.With LLQ, bandwidth allocations for the priority queue and all the CBWFQ queues areconfigured using the priority command
C.LLQ is configured using MQC and CBWFQ is configured using the fair-queue command
D.LLQ priority queue bandwidth is policed with a congestion aware policer
E.LLQ does not support WFQ on the default traffic class (class-default)

6.多項(xiàng)選擇題Select the 3 best answers describing operation and configuration of Frame-Relay Inverse ARP.()

A.Dynamic address mapping uses Frame Relay Inverse ARP to request the next-hop protocol address for a specific connection on its known DLCI
B.Responses to Inverse ARP requests are entered in an address-to-DLCI mapping table on the router or access server which is used to supply the next-hop protoco address or the DLCI for outgoing traffic
C.Inverse ARP is enabled by default for all protocols enabled on the physical interface
D.Inverse ARP is configured using the following command under the Interface configuration ’frame-relaymap dlci (dlci number) protocol protocol-address’
E.Inverse ARP in Frame-Relay is synonymous of ARP in Ethernet

8.多項(xiàng)選擇題When should traffic shaping be implemented on Frame Relay PVCs?()

A.When you want to drop excess traffic above the CIR
B.When there is a speed mismatch between the central site and the remote site
C.When using Frame Relay SVCs
D.When over-subscribing the central site link
E.When LLQ is implemented on the Frame Relay PVC
F.When Multilink PPP LFI is implemented on the Frame Relay PVC

9.單項(xiàng)選擇題What IOS commands display MPLS label mapping on an LSR?()

A.Show mpls forwading-table
B.Show mpls ldp bindings
C.Show mpls ldp neighbor detail
D.Show mpls ldp parameters
E.Show mpls ldp discovery

10.多項(xiàng)選擇題Which of the following ATOM traffic encapsulations require the use of a Control Word?()

A.Cell relay
B.aal5
C.Ethernet VLAN
D.Frame Relay
E.HDLC
F.PPP

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