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单选题At which layer of the OSI model does the Spanning Tree Protocol （STP） operate at？（）A Layer 5B Layer 4C Layer 3D Layer 2E Layer 1

题目
单选题
At which layer of the OSI model does the Spanning Tree Protocol （STP） operate at？（）
A

Layer 5

B

Layer 4

C

Layer 3

D

Layer 2

E

Layer 1

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相似问题和答案

第1题：

At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?

A．Transport

B．Physical

C．Application

D．Data link

E．Network


正确答案：D
解析：Explanation:
CDP is a device discovery protocol that runs over Layer 2 (the data link layer) on all Cisco-manufactured devices (routers, bridges, access servers, and switches) and allows network management applications to discover Cisco devices that are neighbors of already known devices. With CDP, network management applications can learn the device type and the Simple Network Management Protocol (SNMP) agent address of neighboring devices running lower-layer, transparent protocols.

第2题：

In the 7－layer OSI model, which layer switching will take place?()

A.Layer two

B.Layer four

C.Layer one

D.Layer three


参考答案：A

第3题：

As a CCNA candidate, you will be expected to know the OSI model very well. Which of the following are associated with the application layer (layer 7) of the OSI model? (Choose two)

A. TCP

B. Telnet

C. FTP

D. Ping

E. IP

F. UDP


正确答案：BC
B,C 解析：Explanation:
The application layer is the top layer of the OSI model and is used to describe the end user applications that can be used over a network.

Layer Name Examples
Application (layer 7) Telnet, HTTP, FTP, WWW browsers, NFS, SMTP gateways, SNMP

Incorrect Answers:
A. TCP resides at layer 4.
D. ARP is a function of the data link layer, which is layer 2.
E. IP is used at layer 3 (network layer).

第4题：

Which two of the following values does STP take into consideration when it elects the root bridge?（）

  • A、The BPDU version number
  • B、The access layer bridge setting
  • C、The Bridge ID
  • D、The spanning-tree update number
  • E、The bridge priority
  • F、The VLAN number

正确答案:C,E

第5题：

At which layer of the OSI model dose PPP perform?（）

  • A、Layer 3
  • B、Layer 4
  • C、Layer 2
  • D、Layer 5

正确答案:C

第6题：

Which of the following layers of the OSI model is the presentation layer?()

A.Layer 1

B.Layer 5

C.Layer 6

D.Layer 7


参考答案：C

第7题：

At which lay er of the OSI model does the Spanning Tree Protocol (STP) operate at()

A.Lay er 5

B.Lay er 4

C.Lay er 3

D.Lay er 2

E.Lay er 1


参考答案：D

第8题：

At which layer of the OSI model does error checking occur with IPv6?()

A. Layer 2

B. Layer 3

C. Layer 4

D. Layer 7


参考答案：C

第9题：

Which of the following layers of the TCP/IP model most closely corresponds to the network layer of the OSI model?（）

  • A、Application
  • B、Internet
  • C、Transport
  • D、Network
  • E、Data Link

正确答案:B

第10题：

At which lay er of the OSI model does the Spanning Tree Protocol (STP) operate at（）

  • A、Lay er 5
  • B、Lay er 4
  • C、Lay er 3
  • D、Lay er 2
  • E、Lay er 1

正确答案:D

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