OSI TCP/IP model

Question 1

The 4 layered TCP/IP model layers

Answer 1

Application (Application, Presentation, Session)

Transport (Transport)

Internet (Network)

Network Access (Data Link, Physical)

Question 2

Application Layer.

Brief Description and layer number

Answer 2

Allows a client application to access resources on a network using various Protocols
Layer 7

Question 3

Data Link Layer

Answer 3

Frames data for placement on the local network link

Layer 2

Question 4

Data Link Layer’s Protocol Data Unit (PDU)

Answer 4

Frames

Question 5

Network Layer’s Protocol Data Unit (PDU)

Answer 5

A Packet

Question 6

Transport Layer’s Protocol Data Uni (PDU)

Answer 6

A Segment

Question 7

Layer 5 and above Protocol Data Unit

Answer 7

Data

Question 8

Physical Layer’s Protocol Data Unit (PDU)

Answer 8

A bit

Question 9

Encapsulation and Decapsulation

Answer 9

Data travelling down each of the OSI layers. At each layer a header and sometimes a trailer is added to the original data.
Once it reaches the physical layer it is sent across the network as a signal to the receiving device and Decapsulation does the same process but in reverse order.

Question 10

Which Layer do Hubs and Repeaters live on ?

Answer 10

Layer 1
Physical Layer
Only effective in small LANs

Question 11

Layer 1

Answer 11

Physical

Question 12

Layer 1 devices

Answer 12

Repeaters, Hubs

Question 13

Layer 2

Answer 13

Data Link

Question 14

Layer 2 Devices

Answer 14

Standard Switches (L2 Switches)

Question 15

Layer 3

Answer 15

Network

Question 16

Layer 3 Devices

Answer 16

Routers

Multi Layer Switches

Question 17

Layer 4

Answer 17

Transport

Question 18

Layer 5

Answer 18

Session

Question 19

Layer 6

Answer 19

Presentation

Question 20

Layer 7

Answer 20

Application

Question 21

Layers of the OSI model. Top to bottom.

Answer 21

7) Application
6) Presentation
5) Session
4) Transport
3) Network
2) Data Link
1) Physical

Question 22

Network Layer summary

Answer 22

Responsible for addressing and moving packets around the network
Layer 3

Question 23

OSI Model Acronym for Layers

Answer 23

All
People
Seem
To
Need
Data
Processing

Question 24

Physical Layer summary

Answer 24

Encodes bits into an appropriate signal for transmission on the physical medium
Layer 1

Question 25

Presentation Layer Summary

Answer 25

Affects how data is presented for transmission across a network Encryption, ASCII Layer 6

Question 26

Routers

Answer 26

Connect multiple networks together Layer 3 - Network Layer Uses IP addresses and routing tables

Question 27

Session Layer

Answer 27

Opens, Maintains and closes a communication session. | Layer 5

Question 28

Switches

Answer 28

Layer 2 - Data Link Used within a LAN

Question 29

Transport Layer

Answer 29

Segments and Sequences Data to be transported over the network. Also provides error checking Layer 4

Question 30

What is the medium ?

Answer 30

The way in which digital devices are connected. e.g Phones transmitting through a wireless signal. Cables. Fibre-optic, copper

Question 31

Order the networking PDUs into the correct order (top to bottom) for encapsulation for transmission over a network connection.

Answer 31

Segments Packets Frames Bits

Question 32

This TCP Model layer would be the equivalent to the OSI Model's Network layer

Answer 32

Internet

Question 33

This TCP Model layer would be the equivalent to the OSI Model's Data-Link and Physical layers

Answer 33

Network Access Layer

Question 34

This TCP Model layer would be the equivalent to the OSI Model's Transport layer

Answer 34

Transport Layer

Question 35

This TCP Model layer would be the equivalent to OSI Model's Application, Presentation and Session layers.

Answer 35

Application

Question 36

NIC's OSI Model Layer

Answer 36

Data Link

Question 37

What does OSI stand for ?

Answer 37

Open Systems Interconnection.

Question 38

Allows a client application to access resources on a network using various Protocols

Answer 38

Application Layer

Question 39

Frames data for placement on the local network link

Answer 39

Data Link Layer

Question 40

Data travelling down each of the OSI layers. At each layer a header and sometimes a trailer is added to the original data. Once it reaches the physical layer it is sent across the network as a signal to the receiving device

Answer 40

Encapsulation

Question 41

Layer that Routers & Multi Layer Switches live on ?

Answer 41

Layer 3 | Network

Question 42

Segments and Sequences Data to be transported over the network. Also provides error checking

Answer 42

Transport Layer

Question 43

Opens, Maintains and closes a communication session.

Answer 43

Session Layer

Question 44

Responsible for addressing and moving packets around the network

Answer 44

Network Layer

Question 45

Encodes bits into an appropriate signal for transmission on the physical medium

Answer 45

Physical Layer

Question 46

Affects how data is presented for transmission across a network Encryption, ASCII

Answer 46

Presentation Layer