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[单选题]

目前有关认证的技术主要有()。

A.消息认证、身份认证、数字签名

B.消息认证、身份认证、口令机制

C.身份认证、数字签名

D.身份认证、口令机制

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更多“目前有关认证的技术主要有()。A.消息认证、身份认证、数字签名B.消息认证、身份认证、口令机制C.身份”相关的问题

第1题

A new switch is installed in the Ezonexam network....

A new switch is installed in the Ezonexam network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network.

Which of the conditions below have to be met in order for this to occur? (Choose all that apply).

A. The switch that will share the VLAN information must be in the VTP Server mode.

B. The switches must be in the same VTP domain.

C. The switch that will share the VLAN information must be configured as the root bridge.

D. The switches must be configured to use the same VTP version.

E. The switches must be configured to use the same STP version.

F. The switches must be configured to use the same type of ID tagging.

G. The switches must be connected over VLAN trunks.

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第2题

VE1 is a switch in the Ezonexam network. Why will VE1 never learn the broadcast address?A.

VE1 is a switch in the Ezonexam network. Why will VE1 never learn the broadcast address?

A. Broadcast frames are never sent to switches

B. A broadcast frame. is never forwarded by a switch

C. Broadcasts only use network layer addressing

D. A broadcast address will never be the source address of a frame

E. Broadcast addresses use an incorrect format for the switching table

F. None of the above

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第3题

A new Ezonexam switch is installed into an existing LAN and a new VTP trunk is set up with
an existing switch. Which VLANs will be allowed on this new trunk?

A.All defined VLANs are allowed on the trunk by default.

B.Each VLAN, or VLAN range, that is specified with the switchport mode command.

C.Each VLAN, or VLAN range, that is specified with the vtp domain command.

D.Each VLAN, or VLAN range, that is specified with the vlan database command.

E.None of the above

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第4题

The LAN needs are expanding at the Ezonexam corporate office, which is quickly growing. Yo
u are instructed to enlarge the area covered by a single LAN segment on the Ezonexam network.

Which of the following are layer 1 devices that you can use? (Choose all that apply.)

A.A switch

B.A router

C.A network adapter card

D.A hub

E.A repeater

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第5题

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

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第6题

A new switch is installed in the Testking network. This switch is to be configured sothat
VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network.Which of the conditions below have to be met in order for this to occur?()

A. The switch that will share the VLAN information must be in the VTP Server mode.

B. The switches must be in the same VTP domain.

C. The switch that will share the VLAN information must be configured as the root bridge.

D. The switches must be configured to use the same VTP version.

E. The switches must be configured to use the same STP version.

F. The switches must be configured to use the same type of ID tagging.

G. The switches must be connected over VLAN trunks.

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第7题

You are configuring a new Catalyst switch that you want to manage remotely from workstatio
ns on other network segments within your enterprise.Which of the following are required to allow remote management of the switch over IP?()

A. The switch name must match the workgroup name of the local network.

B. The switch must be configured with an IP address and default gateway.

C. The remote workstations must have access to the management VLAN of the switch.

D. CDP must be enabled on the switch so that it can be located by other devices on the network.

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第8题

You have just installed a new web server on the Ezonexam network. You are required to ensu
re that the web server is accessible from the Internet. The network uses private addressing, so an IP-to-registered address mapping is required.

To do this, you enter the following command:

Ezonexam(config)# ip nat inside source static 192.168.2.1

198.18.1.254

You unsuccessfully try to ping the Internet from a PC host on the LAN. During the troubleshooting process, you enter the "show ip nat translations" command but the output is blank.

What is the most likely cause of the problem?

A.The keyword overload is missing from the command.

B.The NAT pool must be defined first.

C.An access list must be defined to create static NAT translations.

D.The interfaces must be configured for NAT.

E.None of the above

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第9题

A new asynchronous connection is being installed in your network. Which pair of WAN encapsulations types is suitable for asynchronous lines?()

A. PPP and ATM

B. PPP and SDLC

C. ATM and HDLC

D. SDLC and HDLC

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第10题

The Ezonexam network administrator needs to a switch named VE1 to become the root bridge f
or a redundant path switched network. What can be done to ensure that VE1 will always assume the role as the root bridge?

A.Assign the switch a higher MAC address than the other switches in the network have

B.Establish a direct link from the switch to all other switches in the network

C.Configure the switch full-duplex operation and configure the other switches for half-duplex operation

D.Configure the switch so that it has lower priority than other switches in the network

E.None of the above

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