英语+网络=请进51.WhyisEthernetknownasabest-effortdeliverysystem?A.Ifadestinationdevicedetectsanyerrors,thenthedatapacketisdiscardedandthesendernotifiedB.Thedestinationdevicenotifiesthesourceonlyifitreceivesallo

Question

英语+网络=请进
51.Why is Ethernet known as a best-effort delivery system?
A.If a destination device detects any errors,then the data packet is discarded and the sender notified
B.The destination device notifies the source only if it receives all of the data
C.The destination only notifies the source if the data was corrupted
D.If the destination must discard the data,then it does not notify the source
52.Which of the following best describes a broadcast storm?
A.A frame that will be sent to one node on a network
B.When too many broadcasts are sent out over the network
C.A section of a network that is bounded by bridges,routers,or switches
D.The network areas within which frames that have collided are propagated
53.What kind of jack must be used for making a connection to a Category 5 unshielded twisted pair cable in a horizontal cabling scheme?
A.RJ-45
B.BNC
C.UTP 55
D.EIA 45
54.Which of the following correctly describes an ISP?
A.Internal Service Protection
B.Internal Service Provider
C.Internet Service Provider
D.Internet Service Protection
55.Which part of a network layer address does the router use during path determination?
A.the host address
B.the router address
C.the server address
D.the network address

Answer 1

答案已经经过修改了:
51.A
52.D
53.A
54.C
55.D