Chapter 3

Question 1

How many layers are in the OSI Model?

Answer 1

7.

Question 2

How many layers are in the TCP/IP Model?

Answer 2

4.

Question 3

The Application layer of the TCP/IP Model makes up what three layers of the OSI Model?

Answer 3

7. Application
8. Presentation
9. Session

Question 4

The Network layer in OSI Model is called what in the TCP/IP Model?

Answer 4

Internet

Question 5

The Network Access layer of the TCP/IP Model makes up what two layers of the OSI Model?

Answer 5

2. Data Link

1. Physical

Question 6

True / False: The OSI and TCP/IP both have a Transport layer?

Answer 6

True.

Question 7

What is the First layer of the OSI Model?

Answer 7

Physical

Question 8

What is the Second layer of the OSI Model?

Answer 8

Data Link

Question 9

What is the Third layer of the OSI Model?

Answer 9

Network

Question 10

What is the Fourth layer of the OSI Model?

Answer 10

Transport

Question 11

What is the Fifth layer of the OSI Model?

Answer 11

Session

Question 12

What is the Sixth layer of the OSI Model?

Answer 12

Presentation

Question 13

What is the Seventh layer of the OSI Model?

Answer 13

Application

Question 14

What is the First layer of the TCP/IP Model?

Answer 14

Network Access

Question 15

What is the Second layer of the TCP/IP Model?

Answer 15

Internet

Question 16

What is the Third layer of the TCP/IP Model?

Answer 16

Transport

Question 17

What is the Fourth layer of the TCP/IP Model?

Answer 17

Application

Question 18

What is a PDU?

Answer 18

Protocol Data Unit. Its the form that a piece of data takes at any layer.

Question 19

As the PDU passes down the stack, what is the order of the encapsulation?

Answer 19

1. Data
2. Segment
3. Packet
4. Frame
5. Bits