MIS-589 Week 3 Quiz 100% Correct Answers
(TCO B) Which of the following is true with respect to the data link layer?
It accepts streams of bits from the application layer
It is responsible for getting a message from one computer to another
It accepts messages from the physical layer
It performs routing functions
(TCO B) You are working to resolve a problem with communication to an office in your building. The Sr. Network Engineer asks you to go get a mini-switch or repeater so that the source of the error can be resolved. What was the likely source of this error?
(TCO B) This error checking scheme adds 8, 16, 24, or 32 bits to the message.
Cyclical Redundancy Check
(TCO B) This type of transmission is typically used on a point-to-point full-duplex circuits.
High-level data link control
(TCO B) Your new position requires that you maintain a Token Ring network that includes several IBM mainframes. What type of access control would this network most likely use?
Relative performance based
(TCO B) You are working with a co-worker over the phone to connect a router at your location in New York to their network in San Francisco. After hours of troubleshooting the WAN protocol configured on the routers you find that the root of the problem is that he has a Cisco router and you have a Nortel router. Which WAN protocol are you most likely configuring in this scenario?
(TCO B) __________ is not a function of a data link protocol.
Media access control
Amplitude shift keying
(TCO B) The key to selecting the best access control technique is to _______________.
whether you are using mainframes or not
selecting the appropriate cable media
find the crossover point between controlled and contention
type of LAN
(TCO B) In general, controlled approaches:
work better than contention approaches for small networks that have low usage
work better than contention approaches for large networks that have high usage
work better than contention approaches for all sizes of networks
do not require a host, server, or active monitor to assign media access control
(TCO B) With contention:
computers wait until the circuit is free before they send data
the front end processor must wait for a response from the polled client or terminal
one computer starts the poll and passes it to the next computer on the multipoint circuit
there is never a chance of a “collision” or two computers trying to send data at the same time
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