
【名词&注释】
过滤器(filter)、路由器(router)、数据包(packet)、帧中继(frame relay)、标识符(identifier)
[单选题]The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?
A. 1 network with 254 hosts
B. 4 networks with 128 hosts
C. 2 networks with 24 hosts
D. 6 networks with 64 hosts
E. 8 networks with 36 hosts
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举一反三:
[单选题]路由器下“特权用户模式”的标识符(identifier)是:()
A. >
B. !
C.
D. (config-if)
[单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP和掩码结合,共划分了多少个子网(不包括全0子网和全1子网)()
A. 8
B. 30
C. 6
D. 14
[单选题]While troubleshooting a connectivity issue from a PC you obtain the following information:Local PC IP address: 190.0.3.35/24
A. Default Gateway: 190.0.3.1
B. Remote Server: 190.0.5.250/24
C. You then conduct the following tests from the local PC:
D. Ping 127.0.0.1 - Unsuccessful
E. Ping 190.0.3.35 - Successful
F. Ping 190.0.3.1 - Unsuccessful
G. Ping 190.0.5.250 – Unsuccessful
H. What is the underlying cause of this problem?
I. TCP/IP not correctly installed
J. Local physical layer problem
K. NIC not functioning
L. Remote physical layer problem
M. None of the above
[单选题]哪一个命令可以设置路由器特权用户的“明文密码”()
A. enable password
B. password
C. enable secret
D. secret
[单选题]对路由器的描述,正确的是()
A. 单广播域,单冲突域的设备
B. 单广播域,多冲突域的设备
C. 多广播域,单冲突域的设备
D. 多广播域,多冲突域的设备
[单选题]下列对访问控制列表的描述不正确的是()。
A. 访问控制列表能决定数据是否可以到达某处
B. 访问控制列表可以用来定义某些过滤器
C. 一旦定义了访问控制列表,则其所规范的某些数据包就会严格被允许或拒绝
D. 访问控制列表可以应用于路由更新的过程当中
[单选题]为了连接“帧中继”线路,网络中的路由器需要提供的端口类型为()
A. FastEthernet
B. Serial
C. BRI
D. Ethernet
[单选题]RIP路由协议认为“网络不可到达”的跳数是:()
A. 8
B. 16
C. 24
D. 100
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