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

A.Cisco2621路由器的可扩展性优于Cisco2501路由器

B.Cisco2621是模块化路由器

C.Cisco2501上提供一个100Mbit/s的快速以太网端口

D.Cisco2501是固定端口的路由器

为查看控制器状态，你需要输入哪个命令?（）

A.show running-config

B.show startup-config

C.show version

D.show controllers

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（）

A.这个列表是编号型扩展ACL，检查离开接口的数据包

B.这个列表是命名的扩展ACL，检查进入接口的数据包

C.这个列表是编号型标准ACL，检查进入接口的数据包

D.这个列表是命名的标准ACL，检查离开接口的数据包

You are an administrator of the Ezonexam switched network and your goal is to reduce some of the administrative overhead on your network. You plan on achieving this by configuring a new VLAN for each department in the Ezonexam network.

However, you need to share the VLAN information across numerous switches. Which of the following would allow you accomplish this?

A. STP

B. GVRP

C. SNMP

D. VTP

E. DHCP

F. None of the above

The corporate head office of Ezonexam has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence, what will happen?

A．UDP will send an ICMP Information Request to the source host.

B．UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

C．UDP will drop the datagrams.

D．UDP will use the sequence numbers in the datagram headers to reassemble the data in the correct order.

E．UDP will not acknowledge the datagrams and wait for a retransmission of the datagrams.

You are given a PC, a router, and a cable. Select the correct combination that will allow you to log into router VE1 locally using a terminal emulation program such as HyperTerminal.

A. Connect the PC's COM port to the router's console port using a straight-through cable.

B. Connect the PC's COM port to the router's console port using a rollover cable.

C. Connect the PC's COM port to the router's Ethernet port using a straight-through cable.

D. Connect the PC's Ethernet port to the router's Ethernet port using a rollover cable.

E. Connect the PC's Ethernet port to the router's Ethernet port using a straight- through cable.

F. None of the above