正确答案: C

这个列表是编号型标准ACL，检查进入接口的数据包

题目：当在一个接口上使用ipaccess-group99in命令时，以下哪条关于所引用访问控制列表的描述是正确的（）

解析：C

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学习资料的答案和解析：

[单选题]某网络中，拟设计10子网，每个子网中放有14台设备，用IP地址段为199.41.10.X，请问符合此种规划的子网掩码是()

255.255.255.240

[单选题]下面对Cisco2621路由器和Cisco2501路由器描述中，错误的是（）

Cisco2501上提供一个100Mbit/s的快速以太网端口

[单选题]路由器上，清空路由表的命令是（）

clearip route*

[多选题]Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet? (Select two answer choices.)

Half-duplex Ethernet uses a loopback circuit to detect collisions.

Full-duplex Ethernet makes use of two pairs of wires for data.

解析：解析：Explanation:

[多选题]How could the Ezonexam corporation benefit from using VLANs on their network?(Select three answer choices.)

VLANs allow access to network services based on department, not physical location.

VLANs establish segmented broadcast domains in switched networks.

解析：A,E,F 解析：Explanation:

[多选题]You are bringing up a new Ezonexam switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?

Switch(config) switchport trunk encapsulation isl

Switch(config) switchport trunk encapsulation ietf

Switch(config-if) switchport trunk encapsulation isl

Switch(config-if) switchport trunk encapsulation ietf

Switch(config-if) switchport trunk encapsulation dot1q

解析：解析：Explanation:

[单选题]Given that you have a class B IP address network range, which of the subnet masks below will allow for 100 subnets with 500 usable host addresses per subnet?

255.255.254.0

解析：解析：Explanation:

[单选题]After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?

It will recall the previous command line

解析：解析：Explanation:

[单选题]Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?

Straight-through cable

解析：解析：Explanation:Straight-throughcablesareusedtoconnecthosttoswitch(orhub)androutertoswitch(orhub).