單項選擇題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.


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1.多項選擇題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）

2.多項選擇題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

4.多項選擇題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

5.單項選擇題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

6.多項選擇題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

7.單項選擇題There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence （from outer to inner） for the VPN traffic on this router？（）

A.TE label， IGP label， VPN label
B.IGP label， TE label， VPN label
C.TE label， VPN label， IGP label
D.VPN label， IGP label， TE label
E.IGP label， VPN label， TE label

8.多項選擇題Unicast Reverse Path Forwarding （Urpf ） can work in the following modes：（）

A.Express mode
B.Strict mode
C.Loose mode
D.Tunnel mode
E.Safe mode

9.多項選擇題Select the three valid LMI extension.（）

A.Multicasting
B.Global addressing
C.Forward-explicit congestion notification （FECN）
D.Virtual circuit status messages.
E.Backward-explicit congestion notification （BECN）

10.多項選擇題When provisioning for Interactive-Video（e，g，video conferencing traffic）which three statementsdepicts the correct requirements？（）

A.Loss should be no more than 1 percent.
B.One-way latency should be no more than 150 ms
C.Jitter should be no more than 30 ms
D.Loss should be no more than 3 percent
E.One-way latency should be no more than 150/2=75 ms
F.Jitter should be no more than 300 ms