Chapter 2 The OSI Layers

Question 1

__ ____ ______, is the primary architectural model for networks. pg 28

Answer 1

the OSI Model

Question 2

_________ ______, is a conceptual blueprint of how communication should take place. it addresses all the processes required for effective communication and divides these processes. p 29

Answer 2

Reference model

Question 3

Binding is a process of what ? p 29

Answer 3

Taking the communication processes related to each other are bound, or grouped together, at a particular layer

Question 4

If you need to develop a certain protocol on a certain layer you should only be concerned with what? p 29

Answer 4

The layer that this protocol will function on and its functions.

Question 5

What are some advantages you get with the OSI model? p 29-3

Answer 5

1.)OSI model divides a network into smaller and simpler components, thus aiding component development, design and troubleshooting.2.)it allows vendor development through the standardization of network components.3.)It prevents changes in other network layers from affecting other layers, thus making app programming easier.

Question 6

The top three layers of the OSI model define what ? p 31

Answer 6

the rules of how and application working within host machines communicate with each other as well as with end users.

Question 7

The bottom four layers of the OSI model define what? p 31

Answer 7

How the actual data is transmitted from end to end.

Question 8

This layer chooses and determines the availability of communication partners along with the resources neccesary to make their required connection. p 32

Answer 8

The application layer

Question 9

The Application layer acts as a _______ between application programs. p 33

Answer 9

Interface.

Question 10

This OSI model layer is the layer responsible for data it presents to the application layer and data translation and code formatting. p 33

Answer 10

The presentation Layer

Question 11

The session layer is responsible for what? p 33

Answer 11

The session layer is responsible for setting up and managing, and then tearing down sessions between presentation layer entities.

Question 12

This OSI model Layer segments and reassembles data into data stream. This layer also establishes end to end data transport services and can establish a logical connection between the send and destination host on an internetwork. p 33

Answer 12

The Transport layer

Question 13

TCP(transmission control protocol) is a reliable service,______ is not. p 34

Answer 13

UDP (User data-gram Protocol)

Question 14

The transport layer can be _______ or ______-_________. p 34

Answer 14

Connectionless or connection-oreinted

Question 15

A virtual circuit setup is called what? p 34

Answer 15

Overhead.

Question 16

This describes how data and networking information are communicated from an application on one computer through the network media to an application on another computer. p 29

Answer 16

The OSI Model

Question 17

Simplex, half duplex and full duplex has to do with what OSI model Layer? p 33

Answer 17

The session layer.