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思科认证 问题列表
问题
With regard to Ethernet media access methods, which of the following are true?(Choose all that apply.)A．A device waits for an electronic signal before transmitting.B．A device listens and waits until the media is not busy before transmitting.C．All devices on an Ethernet segment see data that passes on the network medium.D．Only the sender and the receiver devices see data that passes on the network medium.E．Ethernet networks allow you to configured devises with higher transmission priority.
问题
In which Spanning-Tree states does a switch port learn MAC addresses? (Select two)A．BlockingB．ListeningC．ForwardingD．LearningE．Relaying
问题
At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?A．TransportB．PhysicalC．ApplicationD．Data linkE．Network
问题
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?A．Switch(config)# switchport trunk encapsulation islB．Switch(config)# switchport trunk encapsulation ietfC．Switch(config-if)# switchport trunk encapsulation islD．Switch(config-if)# switchport trunk encapsulation ietfE．Switch(config-if)# switchport trunk encapsulation dot1q
问题
A receiving host has failed to receive all of the segments that it should acknowledge.What can the host do to improve the reliability of this communication session?A．Start a new session using UDPB．Obtain a new IP address from the DHCP serverC．Use a different source port for the sessionD．Decrease the sequence numberE．Decrease the window size
问题
How can a Ezonexam administrator determine if a router has been configured when it is first powered up?A．A configured router prompts for a passwordB．A configured router goes to the privileged mode promptC．An un configured router goes into the setup dialogD．An un configured router goes to the enable mode prompt
问题
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?A．255.255.0.0B．255.255.224.0C．255.255.254.0D．255.255.255.0E．255.255.255.224
问题
Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?A．Serial0/1 is up, line protocol is downB．Serial0/1 is down, line protocol is downC．Serial0/1 is up, line protocol is upD．Serial0/1 is administratively down, line protocol is downE．None of the above
问题
After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?A．It will recall the previous command lineB．It will move the cursor one line upC．It will redisplay the current command lineD．It will capitalize the command lineE．None of the above
问题
Ezonexam is migrating to a private IP addressing scheme. Which of the following describe the use of private IP addresses? (Choose two)A．Addresses chosen by Ezonexam.com to communicate with the Internet.B．Addresses that cannot be routed through the public Internet.C．Addresses that can be routed through the public Internet.D．A scheme to conserve public addresses.E．Addresses licensed to enterprise or ISPs by an Internet registry organization.
问题
Split horizon has been enabled within the Ezonexam routed network. Which one of the following statements best explains the split horizon rule?A．Only routers can split boundaries (horizons) between networks in separate AS numbers.B．Each AS must keep routing tables converged to prevent dead routes from being advertised across boundaries.C．Once a route is received on an interface, advertise that route as unreachable back out the same interface.D．Information about a route should never be sent back in the direction from which the original update came.E．None of the above
问题
What kind of cable should be used to establish a trunked line between two Catalyst switches?A．A straight-through cableB．An EIA/TIA-232 serial cableC．An auxiliary cableD．A modem cableE．A cross-over cable
问题
A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?A．172.16.42.0B．172.16.107.0C．172.16.208.0D．172.16.252.0E．172.16.254.0
问题
Ezonexam has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?A．VTP will allow physically redundant links while preventing switching loopsB．VTP will allow switches to share VLAN configuration informationC．VTP will allow a single port to carry information to more than one VLAND．VTP will allow for routing between VLANsE．None of the above
问题
Assuming you build networks to exact specifications, what is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?A．100 metersB．100 feetC．100 yardsD．200 metersE．None of the above