Day 3 | OSI & TCP/IP

What does 'OSI' stand for?

Open Systems Interconnection

The OSI model is divided into […] layers.

7

Which layer of the OSI model interacts with software applications on a computer?

Layer 7 - Application

Which layer of the OSI model includes HTTP and HTTPS?

Layer 7 - Application

Which layer of the OSI model identifies communication partners and synchronizes communication?

Application

The process of adding additional headers and trailers to data before it is sent over the network is called […]

encapsulation

The process of removing headers and trailers from data received over a network is called […]

de-encapsulation

Interaction between the same OSI layer on different devices is called […] interaction.

same-layer

Interaction between the different OSI layers on the same device is called […] interaction.

adjacent-layer

Which layer of the OSI model translates between data formats?

Layer 6 - Presentation

Which layer of the OSI model establishes, manages, and terminates connections between the local and remote applications?

Layer 5 - Session

Which layer of the OSI model segments and reassembles data for communications between end hosts?

Layer 4 - Transport

Which layer of the OSI model provides host-to-host communication?

Layer 4 - Transport

Which layer of the OSI model provides process-to-process communication?

Layer 7 - Application

What is the name of the Layer 4 PDU?

Segment

Which layer of the OSI model provides path selection between source and destination?

Layer 3 - Network

Routers operate at Layer […] of the OSI model.

3

Which layer of the OSI model provides logical addressing (IP addresses)?

Layer 3 - Network

Which layer of the OSI model provides connectivity to end hosts on different networks?

Layer 3 - Network

What is the name of the Layer 3 PDU?

Packet

What is the name of the Layer 2 PDU?

Frame

Which layer of the OSI model provides node-to-node connectivity?

Layer 2 - Data Link

Which layer of the OSI model detects and corrects Physical layer errors?

Layer 2 - Data Link

Switches operate at Layer […] of the OSI model.

2

Which layer of the OSI model defines physical characteristics of the medium used to transfer data between devices?

Layer 1 - Physical

What is the name of the Layer 1 PDU?

Bits

List the layers of the OSI model in order: 7. […] 6. […] 5. […] 4. Transport 3. Network 2. Data Link 1. Physical

7. Application 6. Presentation 5. Session

List the layers of the OSI model in order: 7. Application 6. […] 5. […] 4. […] 3. Network 2. Data Link 1. Physical

6. Presentation 5. Session 4. Transport

List the layers of the OSI model in order: 7. Application 6. Presentation 5. […] 4. […] 3. […] 2. Data Link 1. Physical

5. Session 4. Transport 3. Network

List the layers of the OSI model in order: 7. Application 6. Presentation 5. Session 4. […] 3. […] 2. […] 1. Physical

4. Transport 3. Network 2. Data Link

List the layers of the OSI model in order: 7. Application 6. Presentation 5. Session 4. Transport 3. […] 2. […] 1. […]

3. Network 2. Data Link 1. Physical

Which networking model was developed by the United States Department of Defense?

TCP/IP Suite (TCP/IP Model)

Which networking model is in use in modern networks?

TCP/IP

OSI Model […] Layer(s) = TCP/IP Application Layer

Application, Presentation, Session

OSI Model […] Layer(s) = TCP/IP Transport Layer

Transport

OSI Model […] Layer(s) = TCP/IP Internet Layer

Network

OSI Model […] Layer(s) = TCP/IP Link Layer

Data Link, Physical

OSI Model Application, Presentation, Session Layers = TCP/IP […] Layer

Application

OSI Model Transport Layer = TCP/IP […] Layer

Transport

OSI Model Network Layer = TCP/IP […] Layer

Internet

OSI Model Data Link, Physical Layers = TCP/IP […] Layer

Link