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单选题
Which ISDN device converts the four-wire BRI signals from an S/T interface into two-wire signals of a U interface?（）
A
TE1
B
NT-2
C
TA
D
TE2
E
NT-1
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What is the difference between a CSU/DSU and a modem?（）A、A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.B、A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line.C、A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.D、A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.
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Which ISDN device converts the four-wire BRI signals from an S/T interface into two-wire signals of a U interface?（）A、TE1B、NT-2C、TAD、TE2E、NT-1
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单选题Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）A
device PoE requirementsB
device IP addressC
device voice VLAN IDD
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单选题Which device enables a router serial interface to connect to the ISDN BRI?（）A
NT2B
NT1C
TED
TAE
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单选题A Router with a BRI/T interface will be used for an ISDN Connection what other ISDN device is required to complete this connection? （）A
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NT2
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单选题What is the difference between a CSU/DSU and a modem?（）A
A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased lineB
A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased lineC
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单选题You have just obtained a modular Cisco router with 2 serial connections and a BRI/U interface. What other physical piece of hardware is required in order to establish an ISDN connection?（）A
Nothing. The router is already suitable.B
A BRI WAN interface in the router.C
An external NT1 to terminate the local loop.D
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多选题When a router converts analog signals to digital signals， what three steps are always included in the process？（）AinvolutionBencodingCsamplingDquantizationEcompressionFcompanding
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多选题Which three functions are associated with a Cisco Unified CallManager？ （）Aconnects traditional telephony devices to voice over IP infrastructureBconverts analog signals to digital formatCperforms voice compressionDperforms call processingEperforms dial plan administrationFperforms signaling and device control
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A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.B
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