At which layers of the OSI model do WANs operate (Choose two.)()。A.application layerB.session layerC.transport layerD.network layerE.datalink layerF.physical layer

题目

At which layers of the OSI model do WANs operate (Choose two.)()。

A.application layer

B.session layer

C.transport layer

D.network layer

E.datalink layer

F.physical layer

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相似问题和答案

第1题：

Which of the following OSI model layers is used for logical addressing?()

A. Physical

B. Transport

C. Network

D. Data link

参考答案：C

第2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

参考答案：B

第3题：

As a CCNA candidate, you must know the various layers of the OSI model. At which layers of the OSI Model do Wide Area Networks operate in? (Choose two)

A. Physical Layer

B. Datalink Layer

C. Network Layer

D. Session Layer

E. Transport Layer

F. Presentation Layer

G. Application Layer

正确答案：AB
A,B 解析：Explanation:
A WAN is a data communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower two layers of the OSI reference model: the physical layer and the data link layer as shown below.

Note: Occasionally WAN's would also be considered to operate at layer 3, but since this question asked for only 2 chopices layers 1 and 2 are better choices.

第4题：

In the OSI model, at which layers do WANs operate at?（）

A、Applicationlayer
B、Presentationlayer
C、Sessionlayer
D、Transportlayer
E、Networklayer
F、Datalinklayer
G、Physicallayer

正确答案:F,G

第5题：

At which layers of the OSI model do WANs operate?()

A.application layer

B.session layer

C.transport layer

D.network layer

E.datalink layer

F.physical layer

参考答案：E, F

第6题：

A crossover cable is MOST commonly associated with which of the following layers of the OSI model?()

A.Session

B.Application

C.Network

D.Physical

参考答案：D

第7题：

In the OSI model, at which layers do WANs operate at?()

A.Applicationlayer

B.Presentationlayer

C.Sessionlayer

D.Transportlayer

E.Networklayer

F.Datalinklayer

G.Physicallayer

参考答案：F, G

第8题：

In which of the following layers of the OSI model does the TCP protocol operate?()

A.Session

B.Network

C.Data link

D.Transport

参考答案：D

第9题：

Which of the following are associated with the application layer of the OSI model (Choose two.)()。

A.ping

B.Telnet

C.FTP

D.TCP

E.IP

参考答案：B, C

第10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

At which layers of the OSI model do WANs operate (Choose two.)()。

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