CCNT 無料問題集「TIA Convergent Network Technologies」

（A）1G

（B）2G

（C）All of the above

（D）3G

（A）H.26x

（B）G.723.1

（C）ITU-T G.165

（D）H.323

（A）Trunking.

（B）Centralized attendant switching.

（C）Resale.

（D）Data switching.

（A）Using LCR.

（B）The premise switch.

（C）The telco.

（D）The PBX.

（A）STEP 2: The switch reads the calling number.

（B）STEP 1: A call comes into a call center carrying either ANI (automatic number identification) or calling line ID (CLID).

（C）STEP 4: The computer does a database lookup.

（D）STEP 3: The computer sends the switch instructions on what to do with the call.

（A）Central office.

（B）LATA.

（C）Wire center.

（D）Business center.

（A）DCE interface

（B）DCE

（C）DTE interface

（D）Transmission channel

（A）Silence suppression

（B）Network segmentation

（C）Packet prioritization

（D）Echo cancellation

（A）SONET provides transmission speeds equal to T1 but with greater reliability.

（B）SONET is more economical than T1 because optical networks have higher throughputs.

（C）SONET provides the transport for wide area networking services such as SMDS and BISDN.

（D）SONET has replaced FDDI as the optical WAN standard.

（A）802.8

（B）802.6

（C）802.11

（D）802.4

（A）BISDN stands for broadband integrated services digital network.

（B）It is a service system requiring speeds of DS1.

（C）It is a service system allowing only packet mode services.

（D）Its physical-layer transmission is SONET.

（A）A station set on a different premise than the PBX.

（B）Onside parameter exchange.

（C）An outside priority extension call.

（D）An outside party line.

（A）PU

（B）SDLC

（C）SSCP

（D）LU

（A）Number of bits required to accomplish one cycle.

（B）Number of bits required to form a byte.

（C）Amount of time between bits.

（D）Amount of time to transmit a bit.