
【名词&注释】
路由表(routing table)、路由器(router)、数据包(packet)、端口号(port number)、源地址(source address)
[单选题]路由器上,清空路由表的命令是()
A. clear ip
B. delete ip route
C. delete route
D. clearip route*
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举一反三:
[单选题]路由器上激活端口的命令是()
A. shutdown
B. no shutdown
C. up
D. noup
[单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP地址所在子网的子网有效IP为()
A. 192.168.50.33---192.168.50.39
B. 192.168.50.41---192.168.50.50
C. 192.168.50.65---192.168.50.70
D. 192.168.50.66---192.168.50.75
[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]扩展ACL和标准ACL的区别()。
A. 标准的ACL在禁止和允许方面比扩展的ACL更高的精度
B. 扩展的ACL核查数据包的源地址(source address)和目标地址和端口号
C. 他们都可以查端口号
D. 他们都可以查特殊协议和其他参数
[多选题]You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network? (Choose three)
A. Congestion avoidance
B. Windowing
C. Cut-through
D. Buffering
E. Load Balacing
F. F. Fast Forward
[单选题]命令“ping127.0.0.1”的功能是()
A. 测试网卡是否正常
B. 测试网关是否正常
C. 测试TCP/IP协议是否正常
D. 测试介质是否正常
[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]EIGRP的管理距离()
A. 90
B. 100
C. 110
D. 120
[单选题]以下特殊区域中哪一个没有自动下发缺省路由()
A. 末梢区域
B. 完全末梢区域
C. NSSA区域
D. 完全NSSA区域
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