GSM网络Um接口的Channel Request(信道请求)消息可以能在BCCH载波的哪些时隙传送()。
A.TS0(时隙0)
B.TS2(时隙2)
C.TS4(时隙4)
D.TS6(时隙6)
A.TS0(时隙0)
B.TS2(时隙2)
C.TS4(时隙4)
D.TS6(时隙6)
This time, the Greater London Council is looking into the possibility of building a Channel link straight to London. (79) A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail link only.
Why is this idea being discussed again? Is Britain becoming more conscious of the need for links with Europe as a result of joining the EEC(欧共体) ? Well, perhaps. The main reason, though, is that a tunnel or bridge would reach the twenty square kilometers of London' s disused dockland(船坞地). A link from London to the continent would stimulate trade and re-vitalize(使…各新有活力) the port, and would make London a main trading center in Europe. (80)With a link over the Channel, you could buy your fish and chips in England, and be able to eat them in France while they were still warm!
Which of the following statements is TRUE?
A.Swimming across the Channel takes less than four hours.
B.The idea of a Channel tunnel or bridge is a very new one.
C.It is considered to be more difficult to swim across the channel than any other means.
D.A tunnel or bridge would only reach as far as the coast.
GSM网络中移动台本身由一个唯一的()来区别。
A.IMEI码
B.IMSI码
C.TMSI码
D.ISIN码
A.网络接口层、网络层、传输层、应用层
B.网络层、应用层、传输层、网络接口层
C.传输层、应用层、网络接口层、网络层
D.应用层、传输层、网络层、网络接口层
ISA接口和PCI接口属于网卡按()的分类。
A.总线接口
B.网络接口
C.宽带类型
D.流量大小
RJ-45接口、BNC接口、AUI接口、FDDI接口属于网卡按()分类。
A.总线接口
B.网络接口
C.宽带类型
D.流量大小
在TCP/IP协议簇中,TCP协议工作在()。
A.应用层
B.传输层
C.网络互联层
D.网络接口层
A.IP地址与接口有关,而与主机、路由器没有太多关联
B.路由器的每一个接口都有一个不同网络号的 IP 地址
C.IP地址适用于主机、路由路由器内部和之间的物理链路和逻辑链路接口
D.现有的IP地址类型为
E.C三类