Computer Network Final Review #2

Computer Network Final Review #2 Choose to fill in the blanks

1 Overview

1.1 The role of computer networks in the information age
1. What are the three major networks that we often refer to as "three networks"?
A. Local area network
B, telecommunication network
C, computer network
D, cable television network
Correct answer: BCD

2 The two important features of the Internet are the
correct answer: shared connectivity

1.2 Overview of the Internet
1 Users go online through the Internet service provider, and the Internet exchange point allows two networks to be directly connected and forwarded packets. Their abbreviations are:

A、ICQ,ISP

B、IXP,ISP

C、ISP,IXP

D. ICP, ISP
correct answer: C
2 network is composed of ____________ and ____________, while the Internet is ____________.
Correct answer: network of node link network

1.3 The composition of the Internet

1 What are the components of the Internet?

A. Computer and host
B, core part
C, communication link
D, edge part
My answer: BD

2 The communication methods between end systems at the edge of the network can usually be divided into:

A、C/S

B、B/S

C 、 P2P

D、PPP

My answer: AC

3 The communication between host A and B is essentially the communication between ______ running on host A and ______ running on host B.
My answer: program program

1.4 The development of computers in China
1 The time when China officially connected to the Internet was

A, 1980
B, 1989
C, 1994
D, 1990
My answer: C

1.5 Categories of
computer networks 1 Computer networks are divided from the perspective of scope and users. What are the categories?
My answer:
scope:
wide area network, metropolitan area network, local area network, personal area network
user:
public network, private network

1.6 Performance of computer network

1.7 Computer network architecture

Protocol network architecture 1 is five, respectively, from the bottom up: , , , , _________.
My answer:
physical layer
data link layer
network layer
transport layer
application layer

2 What are the components of the delay in the network?
My answer:
sending delay, propagation delay, processing delay, queuing delay

3 What are the three elements of a network protocol?
Correct answer:
syntax, semantics, synchronization.

2 Physical layer

2.1 Basic concepts of the physical layer
2.2 Basic knowledge of data communication
2.3 Transmission media under the physical layer
2.4 Channel multiplexing technology