642-311题库下载

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<p align="left"><p align="left">最新642-311题库分享</p></p><p align="left"><p align="left">1.You are installing a Cisco ONS 15454 in a service provider site. A DS3 cable is to be connected to a digital cross-connect system. What is the maximum distance allowed between the two?</p></p><p align="left"><p align="left">A.225 ft</p></p><p align="left"><p align="left">B.450 ft</p></p><p align="left"><p align="left">C.655 ft</p></p><p align="left"><p align="left">D.900 ft</p></p><p align="left"><p align="left">Answer: B</p></p><p align="left"><p align="left">2.Click the Exhibit button. Within an ONS 15454, you are provisioning a circuit on an unprotected UPSR ring. In the exhibit, which two must you configure? (Choose two.)</p></p><p align="left"><p align="left">A.revertive</p></p><p align="left"><p align="left">B.circuit type</p></p><p align="left"><p align="left">C.circuit size</p></p><p align="left"><p align="left">D.bidirectional</p></p><p align="left"><p align="left">E.protected drops</p></p><p align="left"><p align="left">F.switch on PDI-P</p></p><p align="left"><p align="left">Answer: B C</p></p><p align="left"><p align="left">3.With R4.0, how many total DCC tunnel connections can each ONS 15454 support using the TCC+ card?</p></p><p align="left"><p align="left">A.10</p></p><p align="left"><p align="left">B.32</p></p><p align="left"><p align="left">C.64</p></p><p align="left"><p align="left">D.84</p></p><p align="left"><p align="left">E.96</p></p><p align="left"><p align="left">Answer: B</p></p><p align="left"><p align="left">4.Click the Exhibit button. A customer has several interconnected core rings (see exhibit). They want to create several irtual rings?utilizing their OC-192 backbone (nodes 1,2,3,4). What should you recommend?</p></p><p align="left"><p align="left">A.PPMN with BLSR rings</p></p><p align="left"><p align="left">B.PPMN with UPSR rings</p></p><p align="left"><p align="left">C.1:N protection on all core circuits</p></p><p align="left"><p align="left">D.multi-ring interconnect with BLSR rings</p></p><p align="left"><p align="left">Answer: B</p></p><p align="left"><p align="left">5.Which three timing modes are supported on the ONS 15454 shelf? (Choose three.)</p></p><p align="left"><p align="left">A.line timing</p></p><p align="left"><p align="left">B.loop timing</p></p><p align="left"><p align="left">C.internal timing</p></p><p align="left"><p align="left">D.through timing</p></p><p align="left"><p align="left">E.external timing</p></p><p align="left"><p align="left">Answer: A C E</p></p>

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