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33 Cards in this Set
- Front
- Back
- 3rd side (hint)
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in a star topology. a single connection failure will halt all traffic between all sites.
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false
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true or false
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dial up ISDN does not convert a computer digital signal to analog between transmitting them.
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True
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true or false
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ATM is a wan technology that functions in the data link layer
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true
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true or false
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Sonnet simplifies framing and multiplexing at the physical layer
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true
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true or false
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PBL has the best max throughput available
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false
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true or false
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wans typically send data over ________ available communications network.
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public
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the individual graphical location connected by Wan are known as ___________?
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wan links
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because wan connection requires a router to connect locations their network carries are not capable of having ________ protocols
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nonroutable
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most modern wans. a ring topology relies on ______ rings to carry data.
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redundant
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a _________ wans are most types of wans because they provide most routes of data.
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mesh
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the _____ incompliences the intire phone system wires to network carries that connect different regions of a country.
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PSTN
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a __________ is a place where the telephone company terminates lines.
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C O
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a __________ connection is one in which a user computer by a modem and stays connected for a period of time.
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dial up
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a portion of a ps10 that connects any residents or business to the nearest CO is ____________.
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local loop
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________ means that a telpohne company connects residence using fiber optic .
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FITH
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________ Is an updated digital version of x25 that refers on packet switching.
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frame relay
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the process called ______ 2 64 KB. isd channel B can be combined to a throughput to 120kb.
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bonding
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a PRI uses ________ b channels and one 64kb D channel.
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23
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the speed of the T1 carrier depends on its _________ level
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signal
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customers D mark point inside or out the building RJ connectors terminate in a ________.
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smartjack
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a _______ arrogates multiple DSL sub lines and connects them to the carrier CO.
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DSLAM
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broadband cable requires mama sub to share the same local line. raising concerns about ________ and actually throughput.
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security.
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What sets ATM apart from Ethernet?
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fixed packet.
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a sonics ______ results from using double ring tech instead of fiber optic.
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fault tolerance
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the data rate of a perticular sonic ring is indicated By its ________. which is recognized.
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optical carrier level.
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a ________ connection between nodes that are logical and appear to be direct dedicated links between those nodes.
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virtual circuits.
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_________ uses tdm over two wires to devise signal channels into multiple channels.
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T carrier.
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________ encapsulates incoming Ethernet and converts them into ATM cells for transmission over atm network.
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lan emulation
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a __________ node synchronize communication can receive data by looking at the time on the clock.
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receiving
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a ________ combines individual sonic signals on the transmitting end and the other multiplexer seperates combined signals on the receiving end.
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multiplexers
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contained sites that are connected in a star or ring formation that are interconnected at different levels being organized
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tiered.
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occurs when data travels from the carries switching facility to the customer is ________
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downstream
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occurs when each site is no longer
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bus
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