OSI Models

Question 1

What is the purpose of the OSI model

Answer 1

It explains how networking takes place and is used to architect network services and protocols

It allows for inter-operability between vendor products by defining in interface standards

It is a modular approach so that one piece can be changed without affecting others

Question 2

During which layer of the OSI model is the data actually transmitted?

Answer 2

Physical

Question 3

What layer is also considered the user interface

Answer 3

Application

Question 4

Which layer is the data built around the applications ability

Answer 4

Application

Question 5

Which layer is responsible fortranslating from human to computer

Answer 5

Presentation

Question 6

Under what layer does data representation and encryption take place

Answer 6

Presentation

Question 7

Under which layer does inter host communications take place

Answer 7

Session

Question 8

Under which layer does into and communications and reliability take place?

Answer 8

Transport

Question 9

Under which layer does Pat determination and logical addressing (IP) take place?

Answer 9

Network

Question 10

At what layer does physical addressing happen?

Answer 10

Data link

Question 11

Under which layer does media, signal in binary transmission take place?

Answer 11

Physical

Question 12

Name the layers of the OSI model

Answer 12

Application
Presentation
Session
Transport
Network
Data link
Physical

All people seem to need data processing

Question 13

At what layer does the computer reside

Answer 13

Application layer

Question 14

At what layer would a router do it’s work?

Answer 14

Network layer

Question 15

At what layer does a bridge performance duties?

Answer 15

Data link layer

Question 16

At what layer does a repeater do its work?

Answer 16

Physical layer

Question 17

How many layers does the TCP/IP model contain?

Answer 17

4
Application
Transport
Internet
Network

Question 18

When each layer adds its own bit of information to the message as it travels down the network stack is called.

Answer 18

Data Encapsulation

Question 19

What is the five step process as data travels down the stack?

Answer 19

Data (Layers 5-7)
Segment (Transport)
Packet (Network)
Frame (Data link)
Bits (Physical)

Question 20

Name the Protocols that work at the Application Layer

Answer 20

SMTP, HTTP, LPD, FTP, Telnet, TFTP

Question 21

At which layer do Protocols start to function?

Answer 21

Application

Question 22

Which layer is mostly concerned with data conversion, Compression and encryption?

Answer 22

Presentation

Question 23

Which layer acts a dialog management between programs?

Answer 23

Session Layer

Question 24

Which layer uses three distinct phases of Establishment, Transfer and Release?

Answer 24

Session Layer

Question 25

Which layer uses protocols such as SQL, NFS and RPC?

Answer 25

Session Layer

Question 26

Which Layer users End-to-End transfer using connection-oriented or connectionless protocols?

Answer 26

Transport Layer

Question 27

Which Layer uses the protocols of UDP, TCP

Answer 27

Transport Layer

Question 28

What layer establishes the logical connection

Answer 28

Transport Layer

Question 29

Routing of packets and addressing takes place in this layer.

Answer 29

Network

Question 30

Which layer provides Confidentiality, Authentication and Integrity?

Answer 30

Network

Question 31

Which layer breaks data into frames and transmits sequentially?

Answer 31

Data Link

Question 32

Which layer has Synchronization and Error control

Answer 32

Data Link

Question 33

Which layer has two sub-layers and name them.

Answer 33

Data Link

802. 2 - Logical Link Control (LLC) Layer
803. 3 Media Access Control (MAC) Layer
     
     802. 11 - WLAN
     803. 5 - Token Ring

Question 34

Which layer contains Frame Relay and X.25

Answer 34

Data Link

Question 35

Which layer turns Bits into voltage signals?

Answer 35

Physical Layer

Question 36

Name the differenct type of Topologies seen in the Physical layer

Answer 36

Bus, Ring, Star, Mesh, Tree

Question 37

What is the International standardization of system-based network communication through a
modular seven-layer architecture.

Answer 37

OSI Model

Question 38

What is the standardization of device-based network communication through a modular four-layer architecture.

Answer 38

TCP/IP Model