OSI Model

Question 1

The OSI Model (Open Systems Interconnect) Model was developed to establish a set of ________ for network communication.

Answer 1

standards

Question 2

The OSI model describes how information from ________ in one computer moves through a network to reach software in another ________.

Answer 2

software, computer

Question 3

The OSI model achieves this by breaking down the task of data communication into __________ different layers.

Answer 3

seven

Question 4

These layers are numbered __________, starting from the bottom.

Answer 4

1-7

Question 5

The layers of the OSI model, starting from the bottom, include: __________, __________, __________, __________, __________, __________, and __________.

Answer 5

Physical, Data Link, Network, Transport, Session, Presentation, and Application.

Question 6

When two computers want to communicate, the data flows ____ the OSI model, and when the data crosses over the network media such as the internet, it flows back __ the OSI model to its destination.

Answer 6

down, up

Question 7

(Application) The top layer of the OSI model is the __________ layer.

Answer 7

application

Question 8

(Application) This layer deals with __________.

Answer 8

applications

Question 9

(Application) This layer is to manage communications between __________.

Answer 9

applications

Question 10

(Application) Supports application protocols such as __________, __________, and __________.

Answer 10

email, HTTP, FTP

Question 11

(Application) At this layer, data still resembles something that __________ can read.

Answer 11

people

Question 12

(Presentation) The presentation layer is where data is first converted into a ____ that can be sent over a network.

Answer 12

form

Question 13

(Presentation) Data is compressed and _________ and encrypted or ________.

Answer 13

decompressed, decrypted

Question 14

(Presentation) Sometimes referred to as the ________layer.

Answer 14

translation

Question 15

(Session) This layer controls the dialog during ___________.

Answer 15

communications

Question 16

(Session) It establishes, manages, and terminates the connections between the __________ and __________ application.

Answer 16

local, remote

Question 17

(Session) This layer is known as the __________ because it directs network traffic.

Answer 17

traffic cop

Question 18

(Transport) This layer provides the transfer of data between __________ users.

Answer 18

end

Question 19

(Transport) It is responsible for resending any packets that do not receive an acknowledgement from the __________.

Answer 19

destination

Question 20

(Transport) This layer can guarantee that __________ are received.

Answer 20

packets

Question 21

(Network) This layer is responsible for routing the data packet based on its logical __________ address.

Answer 21

IP

Question 22

(Network) It fragments and __________ the packets.

Answer 22

reassembles

Question 23

(Network) This layer instructs data on how to find its ultimate ___________.

Answer 23

destination

Question 24

(Data Link) This layer is responsible for sending data to the __________ layer.

Answer 24

physical

Question 25

(Data Link) Data packets are encoded and decoded into __________.

Answer 25

bits

Question 26

(Data Link) This layer handles ____ ______ and frame synchronization.

Answer 26

flow control

Question 27

(Data Link) It is divided into 2 sub-layers, ____ ____ ______ (MAC) and _______ _____ ______ (LLC)

Answer 27

Media Access Control, Logical Link Control

Question 28

(Physical) The bottom of the OSI model is the __________ layer.

Answer 28

Physical

Question 29

(Physical) This layer defines the network standards and ________ characteristics of a network, such as connectors, media types, cables, voltages, and etc.

Answer 29

physical

Question 30

(Physical) This layer defines the ________ of a network.

Answer 30

topology