Chapter 1: Intro To TCP/IP Networking

Question 1

How many layers are in the TCP / IP model?

Answer 1

5

Question 2

Name the layers of the TCP / Model, and provide an overview of their function

Answer 2

Application - Provide services to software
Transport - Provide services, such as error correction, to higher layers
Network - Provide services such as addressing and routing
Data Link - Defines how to transfer data
Physical - Defines cabling

Question 3

Provide examples of Layer 2 protocols

Answer 3

Ethernet / 802.11

Question 4

Provide examples of Layer 3 protocols

Answer 4

IP / ICMP

Question 5

Provide examples of Layer 4 protocols

Answer 5

TCP / UDP

Question 6

Define adjacent layer interaction

Answer 6

A lower layer provides a service (e.g. error correction) to a higher layer

Question 7

What is encapsulation?

Answer 7

The process of each layer adding a header and / or trailer

Question 8

What is a frame?

Answer 8

Data link data with header and trailer

Question 9

What is a packet?

Answer 9

Network layer data with IP header

Question 10

What is a segment?

Answer 10

Transport layer data with TCP header

Question 11

What is a Layer 2 PDU equivalent?

Answer 11

Frame

Question 12

What is half duplex?

Answer 12

Device must wait to send a frame if it is currently receiving

Question 13

What is full duplex?

Answer 13

Device can send and receive simultaneously

Question 14

2 PCs on a LAN communicating via TCP is an example of what?

Answer 14

Same layer interaction?

Question 15

Which layer includes protocols such as TCP?

Answer 15

Layer 4 (Transport)

Question 15

IP is an example of a protocol on which layer?

Answer 15

Layer 3 (Network)