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Refer to the exhibit.All switch ports are assigned to the co

题目
单选题
Refer to the exhibit.All switch ports are assigned to the correct VLANs, but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. Based on the output shown, what is the most likely problem?（）
A

The access link needs to be configured in multiple VLANs.

B

The link between the switches is configured in the wrong VLAN.

C

The link between the switches needs to be configured as a trunk.

D

VTP is not configured to carry VLAN information between the switches.

E

Switch IP addresses must be configured in order for traffic to be forwarded between the switches

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相似问题和答案

第1题：

Refer to the exhibit.The network administrator normally establishes a telnet session with the switch from host A.However,host A is unavailable.The administrator′s attempt to the switch from host B fails,but pings to the other two hosts are successful.what is the issue?（）

A.Host B and the switch need to be in the same subnet.

B.The switch needs and appropriate default gateway assigned.

C.The switch interface connected to the router is down.

D.Host B need to be assigned an IP address in vlan 1.

E.The switch interfaces need the appropriate IP addresses assigned.


参考答案：B

第2题：

Refer to the exhibit.Switch－1 needs to send data to a host with a MAC address of 00b0.d056.efa4.What will Switch－1 do with this data?()

A.switch-1 will drop the data because it dose not have an entry for that MAC address

B.switch-1 will flood the data out all of its port from which the data originated

C.switch-1 will forward the data to its default gateway

D.tch-1 will send an ARP request out all its ports except the port from which the data originated


参考答案：B

第3题：

A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?

A．The additions will create more collisions domains.

B．IP address utilization will be more efficient.

C．More bandwidth will be required than was needed previously.

D．An additional broadcast domain will be created.

E．The possibility that switching loops will occur will increase dramatically.


正确答案：D
解析：Explanation:
A VLAN is a group of hosts with a common set of requirements that communicate as if they were attached to the same wire, regardless of their physical location. A VLAN has the same attributes as a physical LAN, but it allows for end stations to be grouped together even if they are not located on the same LAN segment.

Networks that use the campus-wide or end-to-end VLANs logically segment a switched network based on the functions of an organization, project teams, or applications rather than on a physical or geographical basis. For example, all workstations and servers used by a particular workgroup can be connected to the same VLAN, regardless of their physical network connections or interaction with other workgroups.

Network reconfiguration can be done through software instead of physically relocating devices. Cisco recommends the use of local or geographic VLANs that segment the network based on IP subnets. Each wiring closet switch is on its own VLAN or subnet and traffic between each switch is routed by the router. The reasons for the Distribution Layer 3 switch and examples of a larger network using both the campus-wide and local VLAN models will be discussed later.

A VLAN can be thought of as a broadcast domain that exists within a defined set of switches. Ports on a switch can be grouped into VLANs in order to limit unicast, multicast, and broadcast traffic flooding. Flooded traffic originating from a particular VLAN is only flooded out ports belonging to that VLAN, including trunk ports, so a switch that connects to another switch will normally introduce an additional broadcast domain.

第4题：

You are assigning VLANs to the ports of switch R1. What VLAN number value is an assigned tothe default VLAN？（）

  • A、VLAN 1003
  • B、VLAN 1
  • C、VLAN ON
  • D、VLAN A
  • E、VLAN 0

正确答案:B

第5题：

A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?（）

  • A、More collision domains will be created.
  • B、IP address utilization will be more efficient.
  • C、More bandwidth will be required than was needed previously.
  • D、An additional broadcast domain will be created.

正确答案:D

第6题：

Refer to the topology shown in the exhibit. Which ports will be STP designated ports if all the links are operating at the same bandwidth? ()

A.Switch A - Fa0/0

B.Switch A - Fa0/1

C.Switch B - Fa0/0

D.Switch B - Fa0/1

E.Switch C - Fa0/0

F.Switch C - Fa0/1


参考答案：B, C, D

第7题：

Refer to the exibit. Three cisco 2950 switches are set to their default priority sttings.During the spanningtree process,which switch will be elected as the root bridge?()

A.Switch3

B.Switch4

C.Switch2

D.Switch1


参考答案：D

第8题：

Refer to the exhibit. What switch proves the spanning－tree designated port role for the network segment that services the printers?()

A.Switch1

B.Switch2

C.Switch3

D.Switch4


参考答案：C

第9题：

Refer to the output shown on switch SW1 below：  Warning： Spantree port fast start should only be enabled on ports connected to a single host.Connecting hubs， concentrators， switches， bridges， etc. to a fast start port can cause temporaryspanning tree loops. Use with caution. Spantree ports 4/1-24 fast start enabled.  What command could you enter to reproduce this output？


正确答案:set spantree portfast 4/1-24 enable。

第10题：

The DAI feature has been implemented in the Company switched LAN.  Which three statements  are true about the dynamic ARP inspection （DAI） feature？ （）

  • A、 DAI can be performed on ingress ports only.
  • B、 DAI can be performed on both ingress and egress ports.
  • C、 DAI is supported on access ports， trunk ports， EtherChannel ports， and private VLAN ports.  
  • D、 DAI should be enabled on the root switch for particular VLANs only in order to secure the ARP  caches of hosts in the domain.
  • E、 DAI should be configured on all access switch ports as untrusted and on all switch ports connected to other switches as trusted.
  • F、 DAI is supported on access and trunk ports only.

正确答案:A,C,E

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