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关于VLANs说法正确的两项是（）

题目
多选题
关于VLANs说法正确的两项是（）
A

VLANs用来分开同一以太网连接下不同数据流

B

—个VLAN是一组属于同一广播域下的交换机端口

C

一个VLAN是一组交换机，这些交换机表现的不连接

D

在以太网中VLANs用于防止环路

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相似问题和答案

第1题：

下列关于罪刑法定原则的基本要求,说法正确的是____。

A.法无明文规定不为罪

B.法无明文规定不处罚

C.上述两项都是基本要求


正确答案：C

第2题：

Which two statements about the use of VLANs to segment a network are true?()

A. VLANs increase the size of collision domains.

B. VLANs allow logical grouping of users by function.

C. VLANs simplify switch administration.

D. VLANs enhance network security.


参考答案：B, D

第3题：

下列关于相关系数的说法，正确的是( )。

A．当相关系数为-1时，两项投资称为完全相关投资

B．当相关系数为-1时，两项投资组合的非系统性风险能完全抵销

C．当相关系数为-1时，两项投资组合的风险收益为零

D．当相关系数为-1时，两项投资组合的收益大于任何一项投资的收益


正确答案：B
解析：本题的考点是相关系数的运用。当相关系数为-1时，称为完全负相关，即两项资产收益率的变化方向与变化幅度完全相反，表现为此增彼减，可以完全抵消全部投资风险。

第4题：

以下关于发育指数的说法，不正确的是（）。

  • A、是由尺度指标和量度指标综合形成的指数
  • B、是由两项或两项以上的形态指标按照一定的数学方法形成的指数
  • C、又称营养指数
  • D、又称充实度指数

正确答案:B

第5题：

Whatarethreeadvantages ofVLANs?()

A.VLANs establish broadcast domains in switched networks.

B.VLANs utilize packet filtering to enhance network security.

C.VLANs provide a method of conserving IP addresses in large networks.

D.VLANs provide a low-latency internetworking alternative to routed networks.

E.VLANs allow access to network services based on department,not physical location.

F.VLANs can greatly simplify adding,moving,or changing hosts on the network.


参考答案：A, E, F

第6题：

关于创业者的能力素质,下列哪项说法正确()。

A、经营管理能力最重要

B、上述两项都重要

C、分析决策能力最重要


参考答案：B

第7题：

Giventheabovepartialconfiguration,whichtwostatementsaretrueaboutVLANtraffic?()

A.VLANs1-5willusefa0/10asabackuponly.

B.VLANs6-10willusefa0/10asabackuponly.

C.VLANs1-5willbeblockediffa0/10goesdown.

D.VLANs1-10areconfiguredtoloadsharebetweenfa0/10andfa0/12.

E.VLANs6-10haveaportpriorityof128onfa0/10.


参考答案：B, D

第8题：

How could the Ezonexam corporation benefit from using VLANs on their network?

(Select three answer choices.)

A. VLANs allow access to network services based on department, not physical location.

B. VLANs utilize packet filtering to enhance network security.

C. VLANs provide a low-latency, high bandwidth internetworking alternative.

D. VLANs provide a method of communication between IP addresses in large networks.

E. VLANs establish segmented broadcast domains in switched networks.

F. VLANs can greatly simplify adding, moving, or changing hosts on the network.


正确答案：AEF
A,E,F 解析：Explanation:
VLANs establish broadcast domains in switched networks, so by virtue of having the option to create many efficient broadcast domains, congestion is reduced and network throughput is greatly enhanced. VLANs allow networks to be divided by department or resource needs, rather then by physical location. When people move departments, leave a department, or join a department, administration is easy and convenient with a few keystrokes.

Incorrect Answers:
B, D. These would be router functions at layer 3. Switches and VLANs operate at layer 2 of the OSI model.

C. The use of VLANs may actually increase the latency in some cases, as traffic from one VLAN to the other will need to be routed.

第9题：

关于VLANs说法正确的两项是()

A.VLANs用来分开同一以太网连接下不同数据流

B.—个VLAN是一组属于同一广播域下的交换机端口

C.一个VLAN是一组交换机，这些交换机表现的不连接

D.在以太网中VLANs用于防止环路


参考答案：A, B

第10题：

关于卡尔.波普说法正确的是（）

  • A、科学哲学家
  • B、社会哲学家
  • C、只有第一项
  • D、前两项

正确答案:D

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