OSI Model

Question 1

Layer 1

Answer 1

Physical

Question 2

Layer 2

Answer 2

Data link

Question 3

Layer 3

Answer 3

Network

Question 4

Layer 4

Answer 4

Transport

Question 5

Layer 5

Answer 5

Session

Question 6

Layer 6

Answer 6

Presentation

Question 7

Layer 7

Answer 7

Application

Question 8

What is layer 1-Physical

Answer 8

Contrails hardware, electrical and mechanical characteristics. Defines how to transmit the electrical pulses or raw bits

Question 9

Examples of Layer 1

Answer 9

DSL, ISDN, SONET/SDH, USB Ect…

Question 10

What is Layer 2-Data link

Answer 10

LLC-Provides addressing (MAC not IP), error and flow control.
MAC- Determines who is allowed to access the media and frame synchroniztion

Question 11

Examples of Layer 2

Answer 11

ATM, 802.2, 802.3, Frame Relay, Ethernet, MAC addresses

Question 12

What is Layer 3-Network

Answer 12

Provides packet forwarding and routing

Question 13

What is Layer 4-Transprot

Answer 13

Moves data along the network (segmenting and sequencing)

Question 14

Examples of Layer 4

Answer 14

TCP and UDP

Question 15

What is Layer 5-Session

Answer 15

Communication establishment, defining communication parameters, maintaining communications, and teardown of communications

Question 16

What is Layer 6-Presentation

Answer 16

Formats data to be placed on network.

Question 17

What is Layer 7-Application

Answer 17

Gives user applications access to the network

Question 18

Examples of Layer 7

Answer 18

FTP, IMAP, POP, HTTP, SMTP, Ect…