认证名称：CCIE SP Optical Qualification Exam
考题数目：400
价格：￥ 300
更新：2008-09-01
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1.What IE is not mandatory in a Q.931 Service msg?
A.Bearer capability
B.Channel ID
C.Message Type
D.Change Status
E.Call Reference
Correct:A
2.The purpose of Administrative Distance, as used by Cisco routers, is:
A.To choose between routes from different routing protocols when receiving updates for the same network
B.To identify which routing protocol forwarded the update
C.To define the distance to the destination used in deciding the best path
D.To be used only for administrative purposes
Correct:A
3.What is the maximum PMD value of a 100km fiber segment if the cable is specified with 0.5ps/km ? (worst case)?
A.0.005ps
B..05ps
C.5ps
D.50ps
E.500ps
Correct:C
4.What is the equivalent of 50 GHz spacing in DWDM in terms of nm?
A.1.6 nm
B.0.8 nm
C.0.4 nm
D.0.2 nm
Correct:C
5.Click the Exhibit to view the topology. Router A has a 512K-access port into the frame relay cloud. Router B has 128K-access port into the frame relay cloud. The two routers are connected with symmetrical PVCs that are configured for 64K committed information rate (CIR). What Frame Relay Traffic Shaping map-class sub-command should be entered on Router A to prevent workstation A from overrunning the access port on Router B?
A.frame-relay traffic-rate 128000 512000
B.frame-relay traffic-rate 64000 512000
C.frame-relay traffic-rate 512000 64000
D.frame-relay traffic-rate 128000 64000
E.frame-relay traffic-rate 64000 128000
Correct:E
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