Please______me at the station on time.A.meetingB.to meetC.meetD.met
Please______me at the station on time.
A.meeting
B.to meet
C.meet
D.met
B.to meet
C.meet
D.met
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解析：
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The data station usually means a(71)unit that provides data for transmission, that accepts transmitted data, and that performs all functions necessary for communication with another functional unit. Data stations may be divided into two kinds, the primary stations and the secondary stations, (72)control functions.In(73)data link control, the primary station is the data station that supports the primary control functions of the data link, generates commands to be transmitted, and interprets received responses. Specific responsibilities assigned to the primary station include initialization of control signal interchange, organization of data flow and actions regarding error control and error recovery functions. The secondary station executes data link control functions as (74)by the primary station, interprets received commands and (75) responses to be transmitted.A．performanceB．functionalC．capacityD．quality
CSMA,although more efficient than ALOHA or slotted ALOHA,still has one glaring inefficiency.If the medium is busy,the station will wait for a random amount of time. When two frames collide,the medium remains （ ） for the duration of transmission of both damaged frames. The use of random delays reduces the probability of（ ）. For（ ）frames,compared to propagation time,the amount of wasted capacity can be considerable.This waste can be reduced if a station continues to listen to the medium while（ ）.The maximum utilization depends on the length of the frame and on the（ ） time; the longer the frames or the shorter the propagation time，the higher the utilization..A.convenientB.inconvenientC.usableD.unusableA.transmissionB.collisionsC.transportationD.receptionA.longB.shortC.bigD.smallA.collidingB.forwardingC.transmittingD.receivingA.propagationB.transmissionC.collidingD.listening
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CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains （ ） for the duration of transmission of both damaged frames. The use of random delays reduces the probability of（ ）. For（ ）frames, compared to propagation time, the amount of wasted capacity can be considerable. This waste can be reduced if a station continues to listen to the medium while（ ）.The maximum utilization depends on the length of the frame and on the（请作答此空） time; the longer the frames or the shorter the propagation time，the higher the utilization.A.propagationB.transmissionC.collidingD.listening
CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains （请作答此空） for the duration of transmission of both damaged frames. The use of random delays reduces the probability of（ ）. For（ ）frames, compared to propagation time, the amount of wasted capacity can be considerable. This waste can be reduced if a station continues to listen to the medium while（ ）.The maximum utilization depends on the length of the frame and on the（ ） time; the longer the frames or the shorter the propagation time，the higher the utilization.A.convenient B.inconvenientC.usableD.unusable
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