OSI Model

Question 0

What things are on Layer 1?

Answer 0

Cables, NIC cards, Hubs

Question 1

AKA: Hub

Answer 1

Multiport repeater

Question 2

What things do you find on the Data Link layer (layer 2)

Answer 2

(Ethernet)
Frames
MAC addresses
Switches
Extended Unique Identifier (EUI-48 and EUI-64(

Question 3

All forwarding decisions made by switches happen on what layer?

Answer 3

Layer 2 (Data link)

Question 4

What do you see on the Network layer? (Layer 3)

Answer 4

IP addresses
Routers
Packets

Question 5

Routers make decisions based info in what OSI layer?

Answer 5

Layer 3 addresses

Question 6

What is layer 4?

Answer 6

Transport layer

Question 7

What things do you find on the Transport layer (L4)?

Answer 7

TCP segments (expects an ack)
UCP datagram (doesn't expect an ack)

Question 8

What is layer 5 of the OSI model?

Answer 8

Session Layer

Question 9

What things do you find at the Session layer? (L5)

Answer 9

Control Protocols

Tunneling Protocols

Question 10

What is layer 6 of the OSI model?

Answer 10

Presentation layer

Question 11

What things do you see on the Presentation layer? (L6)

Answer 11

Application encryption (SSL/TLS)

Question 12

What is layer 7?

Answer 12

Application

Question 13

Where does IP encapsulation take place?

Answer 13

Network layer (L3)

Question 14

Where does TCP encapsulation take place?

Answer 14

Transportation layer (L4)

Question 15

OSI model layers. Bottom to top.

Answer 15

Physical
Data Link
Transport
Session
Presentation
Application

Question 16

Host layers?

Answer 16

Tranport
Session
Presentation
Application

Question 17

Media Layers

Answer 17

Physical
Data Link
Network

Question 18

Who developed OSI reference model? When?

Answer 18

IEEE

Early ’80s