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提问人：网友simsong 发布时间：2022-01-06

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A Ezonexam technician is troubleshooting connectivity problems between two routers that ar

e directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.

In which OSI layer is the problem most likely occurring？

A．Physical

B．Data link

C．Network layer

D．Transport layer

E．Application layer

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更多“A Ezonexam technician is troubleshooting connectivity problems between two routers that ar”相关的问题

第1题

A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address？A．1

A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address？

A．172.16.42.0

B．172.16.107.0

C．172.16.208.0

D．172.16.252.0

E．172.16.254.0

点击查看答案

第2题

In the Ezonexam switched LAN environment, what does the IEEE 802.1Q standard describe？A. V

In the Ezonexam switched LAN environment, what does the IEEE 802.1Q standard describe？

A. VLAN pruning

B. A method of VLAN trunking

C. An approach to wireless LAN communication

D. The operation of VTP

E. The process for root bridge selection

F. None of the above

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第3题

Which of the following steps are necessary in order to add a new VLAN to the Ezonexam swit

ched network？ (Select all that apply)

A．Create the VLAN.

B．Name the VLAN.

C．Configure an IP address for the VLAN.

D．Add the desired ports to the new VLAN.

E．Add the VLAN to the VTP domain.

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第4题

The network administrator has configured port security on a Ezonexam switch. Why would a n

etwork administrator configure port security on this Ezonexam device？

A．To prevent unauthorized hosts from getting access to the LAN

B．To limit the number of Layer 2 broadcasts on a particular switch port

C．To prevent unauthorized Telnet or SSH access to a switch port

D．To prevent the IP and MAC address of the switch and associated ports

E．None of the above

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第5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6题

Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers？A. IPB

Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers？

A. IP

B. ICMP

C. DNS

D. TCP

E. UDP

F. RTP

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第7题

A new trunk has been configured on a switch in the Ezonexam LAN. By default, which VLANs a

re allowed over this trunk link？

A. No VLANs

B. Only the VLANs that are specified when creating the trunk

C. Only VLANs 1-64

D. All VLANs

E. All VLAN's except VLAN 1

F. None of the above

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第8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9题

In which circumstance are multiple copies of the same unicast frame. likely to be transmit

ted in the Ezonexam Switched LAN？

A. During high traffic periods

B. In an improperly implemented redundant topology

C. After broken links are re-established

D. When upper-layer protocols require high reliability

E. When a dual ring topology is in use

F. None of the above

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