Quiz

Question 1

HTTP data sent from a YouTube web server is displayed via your web browser. This is an example of what ?

1. Adjacent-layer interaction

2. Same-layer interaction

3. Encapsulation

4. De-encapsulation

Question 2

HTTP data has been encapsulated with three separate headers and one trailer. What is the appropriate name for this PDU ?

1. Packet

2. Segment

3. Frame

4. Data

Question 3

Which layer of the OSI model are most relevant to the role of a network engineer ?

1. Transport, Network, Data Link, Physical

2. Transport, Network, Data Link

3. Network only

4. Application, Presentation, Session

Question 4

The Link Layer of the TCP/IP Model is equivalent to what layer, or layers, of the OSI Model ?

1. Transport, Network

2. Network, Data Link

3. Data Link

4. Data Link, Physical

Question 5

Which layer of the OSI Model provides host-to-host communications ?

1. Application

2. Network

3. Transport

4. Data Link

Solutions

Question 1

• Same-layer interaction

Refers to the interaction between the same layer on different hosts. This concept allows you to 'ignore' the other layers involved and focus on the interactions between a single layer on different devices.

Question 2

• Frame

Refers to the OSI Layer 2 PDU. It has three headers (Layer 4, 3 and 2) and one trailer (Layer 2).

Question 3

• Transport, Network, Data Link, Physical

Question 4

• Data Link, Physical

Question 5

• Transport