TCP/IP Network Model

Question 1

What is the layer name, protocol, protocol data unit, and addressing of the first layer in the TCP/IP network model?

Answer 1

Physical, 10 Base T, 802.11, Bits, n/a

Question 2

What is the layer name, protocol, protocol data unit, and addressing of the second layer in the TCP/IP network model?

Answer 2

Data Link, Ethernet/Wi-Fi, Frames, MAC Address

Question 3

What is the layer name, protocol, protocol data unit, and addressing of the third layer in the TCP/IP network model?

Answer 3

Network, IP, Datagram, IP Address

Question 4

What is the layer name, protocol, protocol data unit, and addressing of the fourth layer in the TCP/IP network model?

Answer 4

Transport, TCP/UDP, Segment, Port #’s

Question 5

What is the layer name, protocol, protocol data unit, and addressing of the fifth layer in the TCP/IP network model?

Answer 5

Application, HTTP/SMTP/etc…, Messages, n/a

Question 6

Describe the Physical layer of the TCP/IP network model

Answer 6

The physical layer concerns the cabling and sending of signals between computers

Question 7

Describe the Data Link layer of the TCP/IP network model

Answer 7

It is here that protocols are introduced. This layer is responsible for defining a common way of interpreting signals sent through the physical layer so network devices can communicate. Data is sent across a single link

Question 8

What standard is most common in the Data Link layer? What is it responsible for?

Answer 8

The Ethernet Standards are responsible for getting data to nodes on the same network or link

Question 9

Describe the Network layer of the TCP/IP network model

Answer 9

This layer allows for different networks to communicate with each other through devices known as routers. This layer is responsible for delivering data across a collection of networks. This layer delivers data between two individual nodes

Question 10

What is an Internetwork?

Answer 10

A collection of networks connected together through routers, the most famous of these being the Internet

Question 11

What standard is most common in the Network layer? What is it responsible for?

Answer 11

IP, which is responsible for the communication between routers and networks

Question 12

Describe the Transport layer of the TCP/IP network model

Answer 12

This layer sorts out which client and server programs on a node are supposed to get specific data.

Question 13

What is the difference between TCP and UDP?

Answer 13

TCP provides mechanisms to ensure data is reliably delivered while UDP does not

Question 14

Describe the Application layer of the TCP/IP network model

Answer 14

This layer concerns how an application responds to data it has received and is application specific

Question 15

What is the difference between the 5 layer TCP/IP network model and the 7 layer OSI model?

Answer 15

The OSI model abstracts its application layer into three layers