根据下面的文字资料回答 44~45 题 在CSMA/CD传输控制方式中,冲突次数多的一个帧,其发送的优先程度(1 )。在DQDB协议中,一个站点得到一个空时槽时,它可以使用或放过,这是通过(2 )。第44题:文中(1 )处正确的答案是()。
A.高
B.不变
C.降低
D.不定
A.高
B.不变
C.降低
D.不定
A.时分多路
B.空分多路
C.波分多路
D.频分多路
A.团体名
B.用户名ID
C.访问权限
D.访问控制
根据下面的文字资料回答 66~70 题
In low-speed network,it is usually adequate to wait for congestion to occur and
then react to it by telling the source of packets to slow down.In high-speed
networks,this approach oftenworks poorly,because in the(1 )between sending the
notification and notification arriving at the source,thousands of
additional(2 )may aITive.In ATM network,a major tool for
preventing(3 )is(4 )control.when a host wants a new virtual(5 ),it must
describe the traffic to be offered and the service expected.
第66题:文中(1 )处正确的答案是()。
A.interval
B.time
C.slot
D.delay
A.费用
B.灵活性
C.可靠性
D.环型
A.2
B.3
C.4
D.5
根据下面的文字资料回答 63~67 题
In low-speed network,it is usually adequate to wait for congestion to occur and
then react to it by telling the source of packets to slow down.In high-speed
networks,this approach oftenworks poorly,because in the(1 )between sending the
notification and notification arriving at the source,thousands of
additional(2 )may aITive.In ATM network,a major tool for
preventing(3 )is(4 )control.when a host wants a new virtual(5 ),it must
describe the traffic to be offered and the service expected.
第63题:文中(1 )处正确的答案是()。
A.interval
B.time
C.slot
D.delay
第50题:文中(1 )处正确的答案是()。
A.FTTC
B.FTTH
C.FTTB
D.FTTD
A.远程访问
B.远程网络监控
C.远程登录
D.远程控制
A.近端串扰
B.拓扑结构
C.开路或短路
D.错对