思科认证2022加血提分每日一练(09月15日)

1. [单选题]把访问权限表应用到路由器端口的命令是：()

A. permit access-list 101 out
B. ip access-group 101 out
C. apply access-list 101 out
D. access-class 101 out

2. [单选题]某台PC，能ping通路由器，但不能telnet到路由器，可能的原因是（）

A. PC的IP地址设置错误
B. 路由器端口IP设置错误
C. 路由器端口处于关闭状态
D. telnet密码未设置

3. [多选题]对于IP为199.41.27.0，子网掩码为255.255.255.240，则该IP地址和子网掩码相作用会得到一系列IP，从下列选项中选出属于“有效IP”的选项：()

A. 199.141.27.33
B. 199.141.27.112
C. 199.141.27.119
D. 199.141.27.126
E. 199.141.27.175
F. F.199.141.27.208

4. [多选题]Which of the following are types of flow control? (Choose three)

A. Buffering
B. Cut-through
C. Windowing
D. Congestion avoidance
E. Load balancing

5. [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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