Question 21 The Internet is formed by interconnecting multiple packet switching

Question

Question 21

The Internet is formed by interconnecting multiple packet switching networks. Interconnecting is substantially more powerful than a single networking technology because the approach permits new technologies to be incorporated at any time without requiring the replacement of old technologies.

Question 22

The chief advantage of packet switching over circuit switching is;

Question 23

The fundamental abstraction used to relate cooperative sets called suites or families into a unified whole is known as a layering model. The layering model used with TCP/IP, and usually referred to as a stack consists of how many layers?

Question 24

The physical layer (layer 1) specifies details about the underlying transmission medium and the associated hardware. All specifications related to electrical properties, radio frequencies, and signals belong in layer 1.

Question 25

The simplest LAN extension mechanism consists of an optical fiber and a pair of fiber modems used to connect the computer to a remote Ethernet.

Question 26

The simplest form of wiring that helps reduce interference from electrical noise is known as;

Question 27

The term "header" in Internet communications refers to;

Question 28

The term communication protocol, network protocol, or protocol refers to;

Question 29

The terms "guided" and "unguided" distinguish between;

Question 30

The typical LAN is designed to span;

Question 31

To master the complexity in networking, it is important to gain a broad background that includes five key aspects of networking. These five key aspects are;

Explanation / Answer

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As per the requirement submitted above , kindly find the below solution.

Question 22 :

Answer : Lower cost

Explanation : In packet swtching sender needs to divide message into blocks of data that is called packets and each packets can vary in sizes. Packet switching sharing network connection hence cost incured is lower as compared to circuit switching.

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Question 23:

Answer : 7

Explanation : Layering model or it is also known as OSI (Open System Interconnection) model which is developed by ISO.This OSI model consists of seven layers known as

1. Physical Layer (Layer 1)

2.Data Link Layer (Layer 2)

3.Network Layer (Layer 3)

4.Transport Layer (Layer 4)

5.Session Layer (Layer 5)

6.Presentation Layer (Layer 6)

7.Application Layer (Layer 7)

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Question 24 :

Answer : False

Explanation : Physical Layer is first layer in OSI reference model which is responsible for actually making physical connection between devices.

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Question 25 :

Answer :True

Explanation :  This mechanism allows to connect to a remote network because such mechanism uses fiber and fiber has low delay and high bandwidth and this extension can work with standered network interface hardware.

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Question 26 :

Answer : unshielded twisted pair (UTP) , coaxial cable

Explanation : unshielded twisted pair (UTP) , coaxial cable and Unshielded Twisted Pair (UTP) are types of wires that helps to reduce interference from electrical noise.

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Question 30 :

Answer : only a few hundred meters

Explanation : LAN is stands for Local Area Network , which is used to have a network for single room or a building.

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