Ethemet的MAC地址长度为( )位。
Ethemet的MAC地址长度为( )位。
Ethemet的核心技术是()。 A: CSMA/CD B: TokenRing C: TokenBus D: CSMA/CA
Ethemet的核心技术是()。 A: CSMA/CD B: TokenRing C: TokenBus D: CSMA/CA
以下哪个是正确的Ethemet物理地址?() A: 00-60-08 B: 00-60-08-00-A6-38 C: 00-60-O8-00 >> D: 00-60-08-00-A6-38-00
以下哪个是正确的Ethemet物理地址?() A: 00-60-08 B: 00-60-08-00-A6-38 C: 00-60-O8-00 >> D: 00-60-08-00-A6-38-00
最早使用随机争用技术的是()。 A: ALOHA网 B: Intemet网 C: ARPANET网 >> D: Ethemet
最早使用随机争用技术的是()。 A: ALOHA网 B: Intemet网 C: ARPANET网 >> D: Ethemet
关于设备 SWC 的上述配置说法正确的是[SWC]interface Ethernet 1/0/13[SWC-Ethernet 1/0/13]stp point-to-point force-true[SWC]linterface Ethernet 1/0/2[SWC Ethernet 1/0/2]stp edged-port enable A: stp point-to-point force-true 命令是强制使与 Ethemetl/0/13 相连的链路成为点到点链路 B: stp instance 1 priority4096 是配置交换机在实例 1 中的优先级为 4096,该优先级默认为 0 C: stp edged-port enable 该命令是启用交换机 SWC 的 Ethemet1/0/2 为边缘端口 D: SWC 为根交换机
关于设备 SWC 的上述配置说法正确的是[SWC]interface Ethernet 1/0/13[SWC-Ethernet 1/0/13]stp point-to-point force-true[SWC]linterface Ethernet 1/0/2[SWC Ethernet 1/0/2]stp edged-port enable A: stp point-to-point force-true 命令是强制使与 Ethemetl/0/13 相连的链路成为点到点链路 B: stp instance 1 priority4096 是配置交换机在实例 1 中的优先级为 4096,该优先级默认为 0 C: stp edged-port enable 该命令是启用交换机 SWC 的 Ethemet1/0/2 为边缘端口 D: SWC 为根交换机
高速以太网主要包括()。 A: 100Mbps的快速以太网(Fast Ethemet,FE) B: 1Gbps的千兆以太网(或吉比特以太网) C: 10Gbps的十千兆以太网(或十吉比特以太网) D: 10Mbps的以太网
高速以太网主要包括()。 A: 100Mbps的快速以太网(Fast Ethemet,FE) B: 1Gbps的千兆以太网(或吉比特以太网) C: 10Gbps的十千兆以太网(或十吉比特以太网) D: 10Mbps的以太网
for i in range(b.max_row): for j in range(b.max_column): print(b.cell(row=i,column=j).value)上面语句运行的结果是:__________。 A: 1 1 1 1 1 1 1 1 1 1 B: 1111111111 C: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D: 出现异常
for i in range(b.max_row): for j in range(b.max_column): print(b.cell(row=i,column=j).value)上面语句运行的结果是:__________。 A: 1 1 1 1 1 1 1 1 1 1 B: 1111111111 C: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D: 出现异常
【单选题】CDMA通信的基站,假定基站A的码片序列是+1 +1 +1 -1 -1 +1 -1 -1,基站发射bit为101时,实际发射的信号是 A. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 B. +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 +1 +1 +1 -1 -1 +1 -1 -1 C. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 D. –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1
【单选题】CDMA通信的基站,假定基站A的码片序列是+1 +1 +1 -1 -1 +1 -1 -1,基站发射bit为101时,实际发射的信号是 A. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 B. +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 +1 +1 +1 -1 -1 +1 -1 -1 C. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 D. –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1
for i in range(1,11): for j in range(1,11): b.cell(row=i,column=j).value=1 #b是一个工作表对象for i in range(1,11): for j in range(1,11): print(b.cell(row=i,column=j).value,end=" ") print()上面程序代码运行的结果是()。 A: 1 B: 1 1 1 1 1 1 1 1 1 1 C: 1111111111 D: 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1
for i in range(1,11): for j in range(1,11): b.cell(row=i,column=j).value=1 #b是一个工作表对象for i in range(1,11): for j in range(1,11): print(b.cell(row=i,column=j).value,end=" ") print()上面程序代码运行的结果是()。 A: 1 B: 1 1 1 1 1 1 1 1 1 1 C: 1111111111 D: 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1
下列哪个码片序列不能用于CDMA通信 A: ( -1 -1 -1 +1 +1 -1 +1 +1 ) B: ( -1 -1 +1 -1 +1 +1 +1 -1 ) C: ( -1 +1 -1 +1 +1 -1 -1 -1 ) D: ( -1 +1 -1 -1 -1 -1 +1 -1 )
下列哪个码片序列不能用于CDMA通信 A: ( -1 -1 -1 +1 +1 -1 +1 +1 ) B: ( -1 -1 +1 -1 +1 +1 +1 -1 ) C: ( -1 +1 -1 +1 +1 -1 -1 -1 ) D: ( -1 +1 -1 -1 -1 -1 +1 -1 )