37、IEEE 802.3指定的以太网帧的最大和最小长度是()。

A. 64~1518字节
B. 64~1522字节
C. 32~1518字节
D. 32~1522字节

38、( ) 标准规范了计算机网卡的以太网MAC子层的功能。

A. IEEE 802.2
B. IEEE 802.3
C. IEEE 802.5
D. IEEE 802.11

39、交换机接口连接的作用是( )。

A. 隔离广播域
B. 分割冲突域
C. 交换机的每个接口重新生成比特
D. 使用交换机的MAC地址作为目的

40、以太网总线上发生数据冲突时，结果将( )。

A. 使用CRC值来修复数据帧
B. 所有设备都停止传输，等段时间后再试
C. MAC地址较小的设备停止传输， 让MAC地址较大的设备先传输
D. MAC子层优先传输MAC地址较小的帧

Any shop with SES can ______and ______through the Inmarsat satellites when sending a distress alert.

A. enter the system rapidly / wait for rescue
B. have an absolute priority to enter the system / contact with a CES
C. establish contact with the RCC / enter the port
D. enter the system gradually / get the rescue

A terminal, you should first ______.

A. an CES / telex mode
B. an SES telex service
C. the service / the subscriber
D. a satellite / an ocean region

General radio communications in the global system are those between ______ concerning the management and operation of the ships and may have impact on their safety.

A. SAR party and the ship in distress
B. SAR authorities and the ship in distress and survival craft
C. A shop station and any coast station
D. Ship stations and shore-based communication network

Inmarsat的完整拼写及中文含义

SCC的完整拼写及中文含义

AES的完整拼写及中文含义