CHAPTER 1

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One feature common to most computer software and data communications is

The use of layering to organize functionality

At which layer of the OSI model are you likely to see acknowledgments of data segments?

Transport

The header of a data packet contains all of the following except

User data

Layering is the practice of

arranging functionality of components so that lower layers support the services of upper layers

The novelty of the Telegraph was that

it allowed instantaneous long-distance communication over a wire

The novelty of multiplexing is that

it allows one wire to carry multiple signals simultaneously

The novelty of switching is that

it allows one wire to connect a user to multiple destinations

A unique feature of the Internet compared to landline phone and traditional cable TV networks is that

The Internet uses a common packet format to transfer data from any application

Packetization is the process of

Breaking down user data into small segments

The session layer in the OSI model is responsible for

Creating and terminating connections

The Data link layer in the TCP/ IP stack is responsible for

Error control

A technology defined at the Data link layer is

Ethernet

Businesses generate more network data than consumers. (T/F)

False

The TCP/ IP stack has ______ layers

Five

The Network layer in the TCP/ IP stack is responsible for

Identifying and locating the destination

The novelty of packet switching is that

It allows all users to be connected to all other users simultaneously

The contribution of the OSI model was that

It helped specify the concept of layers in data communication

The common packet format that can be transferred by any networking technology and that serves all applications is defined at the _______ layer

Network layer

Business Data Communications refers to the movement of data from

One computer application on a computer to another computer application on another computer

A protocol is a set of rules that

Permit information systems to exchange information with each other

The Transport layer in the TCP/ IP stack is responsible for

Segmentation and reassembly of packets

The OSI model has ___ layers.

Seven

The Physical layer in the TCP/ IP stack is responsible for

Signaling

The Application layer in the TCP/ IP stack is responsible for

Specifying end user needs

The presentation layer in the OSI model is responsible for

Syntax conversion from host-specific syntax for network transfer


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