Chapter 2_homework2

Chapter 2 Network Models 第二章网络模型作业

Question 1

List the layers of the Internet Model. 列举因特网模型的分层名称。

ANSWER:

Layer 5: Application layer

Layer 4: Transport layer

Layer 3: Network layer

Layer 2: Data link layer

Layer 1: Physical layer

Question 15 Single Choice

The Internet Model consists of _____ layers. 因特网模型是由____层组成的。

A. Three三 B. Five五 C. Seven七 D. Eight八

ANSWER:

B. Five layers

Question 29 Exercises

Match the following to one of the five Internet layers. 将下列功能与因特网模型的某一层次对应起来

a. Route determination 确定路由

b. Flow control 流量控制

c. Interface to physical world 与物理世界的接口

d. Provides access to the network for the end user 给终端用户提供网络接入

e. Packet Switching 分组交换

ANSWER:

a. Route determination ==> Network layer

b. Flow control ==> Transport layer, Data link layer

c. Interface to physical world ==> Physical layer, Application layer

d. Provides access to the network for the end user ==> Application layer

e. Packet Switching ==> Network layer