Which DSL standard has the fastest speeds immediately outside the CO?
answer
VDSL
question
How many channels are in an ISDN PRI connection?
answer
23B+D
question
What kind of network is the PSTN?
answer
Circuit-switched
question
What kind of device can monitor a connection at the demarc but cannot interpret data?
answer
Smart jack
question
Where does an MPLS label go in a PDU?
answer
Between Layers 2 and 3
question
What is the lowest layer of the OSI model at which LANs and WANs support the same protocols?
answer
Layer 3
question
______________ in SONET are analogous to the ________________ of T-carriers.
answer
OC levels, digital signal levels
question
What specifications define the standards for cable broadband?
answer
DOCSIS
question
An organization can lease a private _________________ that is not shared with other users, or a _________________ that can be physically configured over shared lines in the carrier's cloud.
answer
dedicated line, virtual circuit
question
What method does a GSM network use to separate data on a channel?
answer
TDMA
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