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多选题The network administrator wants to enable an EtherChannel between two switches in "on" mode. The administrator connects the cables and enables the interfaces， but while configuring the EtherChannel in the first switch， a spanning-tree loop was detected

题目
多选题
The network administrator wants to enable an EtherChannel between two switches in "on" mode. The administrator connects the cables and enables the interfaces， but while configuring the EtherChannel in the first switch， a spanning-tree loop was detected. Which two of these  procedures can avoid this problem？（）
A

Configure the EtherChannel as desirable first.

B

Assign all interfaces to the same VLAN.

C

Disable PortFast on the interfaces in the EtherChannels.

D

Disable all interfaces first.

E

Fast Ethernet and Gigabit Ethernet ports cannot be assigned to the same EtherChannel.

F

Fix cabling problems.

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相似问题和答案

第1题：

An administrator wants to limit access of a wireless network without requiring authorized users toenter a password or network key.Which of the following methods would MOST likely be implemented on the wireless network?（）

A. Disable SSID

B. WPA

C. MAC filtering

D. RAS


参考答案：A

第2题：

Which command will enable the administrator toquery the current network adapter configuration?()

A.netstat -v

B.entstat -d

C.lsattr -El

D.lsdev -C -attr


参考答案：A

第3题：

A network administrator wants to control which user hosts can access the network based on their MAC address. What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?

A. BPDU

B. Port security

C. RSTP

D. STP

E. VTP

F. Blocking mode


正确答案：B
B 解析：Explanation:
Understanding How Port Security Works:
You can use port security to block input to an Ethernet, Fast Ethernet, or Gigabit Ethernet port when the MAC address of the station attempting to access the port is different from any of the MAC addresses specified for that port. Alternatively, you can use port security to filter traffic destined to or received from a specific host based on the host MAC address.

When a secure port receives a packet, the source MAC address of the packet is compared to the list of secure source addresses that were manually configured or autoconfigured (learned) on the port. If a MAC address of a device attached to the port differs from the list of secure addresses, the port either shuts down permanently (default mode), shuts down for the time you have specified, or drops incoming packets from the insecure host.

The port's behavior. depends on how you configure it to respond to a security violation. If a security violation occurs, the Link LED for that port turns orange, and a link-down trap is sent to the Simple Network Management Protocol (SNMP) manager. An SNMP trap is not sent if you configure the port for restrictive violation mode. A trap is sent only if you configure the port to shut down during a security violation.

第4题：

The network administrator wants to enable an EtherChannel between two switches in "on" mode. The administrator connects the cables and enables the interfaces， but while configuring the EtherChannel in the first switch， a spanning-tree loop was detected. Which two of these procedures can avoid this problem？（）

  • A、Configure the EtherChannel as "desirable" first.
  • B、Assign all interfaces to the same VLAN.
  • C、Disable PortFast on the interfaces in the EtherChannels.
  • D、Disable all interfaces first.
  • E、Fast Ethernet and Gigabit Ethernet ports cannot be assigned to the same EtherChannel.
  • F、Fix cabling problems.

正确答案:A,D

第5题：

A network administrator wants to control which user hosts can access the network based on their MAC address. What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?（）

  • A、BPDU
  • B、Port security
  • C、RSTP
  • D、STP
  • E、VTP
  • F、Blocking mode

正确答案:B

第6题：

An administrator wants to test the network MTU. Which of the following commands allows differentsize packets to be sent?()

A.netstat

B.traceroute

C.nbtstat

D.ping


参考答案：D

第7题：

A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?()

A.the port-channel 1 interface

B.the highest number member interface

C.all member interfaces

D.the lowest number member interface


参考答案：A

第8题：

An administrator wants to be alerted when a network－based attack is underway, but the company policy prohibits blocking or dropping network connections.Which of the following MUST be deployed?()

A.IDS

B.IPS

C.Firewall

D.Managed PKI


参考答案：A

第9题：

A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?（）

  • A、the port-channel 1 interface
  • B、the highest number member interface
  • C、all member interfaces
  • D、the lowest number member interface

正确答案:A

第10题：

The Company network administrator needs to enable VTP pruning within the Company network. What action should a network administrator take to enable VTP pruning on an entire management  domain？（）

  • A、Enable VTP pruning on any switch in the management domain
  • B、Enable VTP pruning on any client switch in the domain
  • C、Enable VTP pruning on a VTP server in the management domain
  • D、Enable VTP pruning on every switch in the domain
  • E、None of the other alternatives apply

正确答案:C

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