CompTIA认证考试

At which of the following OSI model layers is HTTPS encryption performed?（）A、Layer 3B、Layer 5C、Layer 6D、Layer 7

题目

At which of the following OSI model layers is HTTPS encryption performed?（）

  • A、Layer 3
  • B、Layer 5
  • C、Layer 6
  • D、Layer 7
参考答案和解析
正确答案:C
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相似问题和答案

第1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2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3题：

The following three concepts are essential to the OSI model: service, interface and

A．networks

B．applications

C．protocols

D．layers


正确答案：C

第4题：

Which three of the following OSI model layers also belong to the TCP／IP model?()

A. The application layer

B. The session layer

C. The data link layer

D. The transport layer

E. The network interface layer

F. The physical layer


参考答案：A, D, E

第5题：

In the OSI model, which of the following layers would be the cause of a session time－out while browsing the web?()

A.Laye r2

B.Layer 3

C.Layer 5

D.Layer 7


参考答案：C

第6题：

Which OSI layer is associated with the following: The acknowledgement of transmissions, sequencing, and flow control across a network?

A. Layer 2

B. Layer 3

C. Layer 4

D. Layer 5

E. Layer 6

F. Layer 7


正确答案：C
C 解析：Explanation:
The Transport layer (Layer 4) defines several functions, including the choice of protocols. The most important Layer 4 functions are error recovery and flow control. The transport layer may provide for retransmission, i.e., error recovery, and may use flow control to prevent unnecessary congestion by attempting to send data at a rate that the network can accommodate, or it might not, depending on the choice of protocols. Multiplexing of incoming data for different flows to applications on the same host is also performed. Reordering of the incoming data stream when packets arrive out of order is included. Examples include: TCP, UDP, and SPX.

第7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8题：

The following three concepts are essential to the OSI model:service,interface and

A． networks

B．applications

C．protocols

D．layers


正确答案：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


参考答案：B

第10题：

Which of the following sounds is a voiced bilabial stop?


答案：D
解析：
考查辅音的发音特征。[b]是带声的、双唇音和爆破音。

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