Tag: osi-model

Questions Related to osi-model

Routers operate at which layer of the OSI model?
networking osi-model

  1. physical

  2. transport

  3. network

  4. MAC sublayer of the data link layer

Show answer
Correct Option: C

Bits are packaged into frames at which layer of the OSI model?
networking osi-model

  1. data link

  2. transport

  3. physical

  4. presentation

  5. application

Show answer
Correct Option: A

Which of the following are benefits of using a layered network model?
networking osi-model

  1. it facilitates troubleshooting

  2. it breaks the complex process of networking into more manageable chunks

  3. it allows layers developed by different vendors to interoperate.

  4. all of the above

Show answer
Correct Option: D

The layers of the OSI model, from the top down, are:
networking osi-model

  1. application, presentation, session, transport, network, data link, physical

  2. session, presentation, data transport, MAC, network, physical

  3. physical, data link, network, transport, session, presentation, application

  4. application, encryption, network, transport, logical link control, physical

Show answer
Correct Option: A
Explanation:

To answer this question, the user needs to have an understanding of the OSI (Open Systems Interconnection) model, which is a conceptual framework used to describe how data is transmitted over a network. The model is divided into seven layers, and each layer is responsible for a specific aspect of the communication process.

Now, let's go through each option and explain why it is right or wrong:

A. application, presentation, session, transport, network, data link, physical: This option is correct. The OSI model layers, from top to bottom, are application, presentation, session, transport, network, data link, and physical. This sequence spells out the mnemonic "All People Seem To Need Data Processing," which can be used to help remember the order of the layers.

B. session, presentation, data transport, MAC, network, physical: This option is incorrect. The layers listed in this option are not in the correct order, and some of the layer names are incorrect. For example, "data transport" is not a layer in the OSI model, and "MAC" refers to the Media Access Control sublayer, which is part of the data link layer.

C. physical, data link, network, transport, session, presentation, application: This option is incorrect. The order of the layers is incorrect, starting with the physical layer and ending with the application layer.

D. application, encryption, network, transport, logical link control, physical: This option is incorrect. The layer names are not correct, and "encryption" is not a layer in the OSI model.

Therefore, the correct answer is:

The Answer is: A. application, presentation, session, transport, network, data link, physical.

Which of the following operate at the presentation layer?

networking osi-model

  1. FTP and HTTP

  2. SMTP

  3. UDP

  4. midi and jpeg

  5. all of the above

Show answer
Correct Option: D

AI Explanation

To answer this question, you need to understand the different layers of the OSI model.

The presentation layer is the sixth layer of the OSI model and is responsible for the formatting and presentation of data. It ensures that data is presented in a format that can be understood by the receiving application.

Let's go through each option to understand whether it operates at the presentation layer or not:

Option A) FTP and HTTP - FTP (File Transfer Protocol) and HTTP (Hypertext Transfer Protocol) operate at the application layer, which is one layer above the presentation layer. Therefore, Option A is incorrect.

Option B) SMTP - SMTP (Simple Mail Transfer Protocol) also operates at the application layer, not the presentation layer. Therefore, Option B is incorrect.

Option C) UDP - UDP (User Datagram Protocol) operates at the transport layer, which is below the presentation layer. Therefore, Option C is incorrect.

Option D) MIDI and JPEG - MIDI (Musical Instrument Digital Interface) and JPEG (Joint Photographic Experts Group) are both file formats that operate at the presentation layer. They define how musical data and image data should be formatted and presented. Therefore, Option D is correct.

Option E) All of the above - This option is incorrect because not all of the options listed operate at the presentation layer. Therefore, Option E is incorrect.

The correct answer is Option D. MIDI and JPEG operate at the presentation layer because they define how musical data and image data should be formatted and presented.

Which of the following are transport layer protocols?
networking osi-model

  1. TCP and UDP

  2. ATM

  3. CISC

  4. HTTP and FTP

Show answer
Correct Option: A

Which of the following are considered to be the upper layer protocols?

networking osi-model

  1. presentation and session

  2. application and presentation

  3. application, presentation, and session

  4. application, presentation, session, and transport

  5. application

Show answer
Correct Option: C

AI Explanation

To answer this question, you need to understand the concept of the OSI (Open Systems Interconnection) model. The OSI model is a conceptual framework that standardizes the functions of a communication system into seven different layers.

Each layer of the OSI model has a specific set of functions and protocols associated with it. The upper layers of the OSI model are responsible for providing services and interfaces to the user or application.

The upper layer protocols include the application, presentation, and session layers. These layers are responsible for tasks such as data formatting, encryption/decryption, session management, and application-specific functions.

Let's go through each option to understand why it is correct or incorrect:

Option A) presentation and session - This option is incorrect because it only includes two out of the three upper layer protocols. The correct answer should include all three: application, presentation, and session.

Option B) application and presentation - This option is incorrect because it only includes two out of the three upper layer protocols. The correct answer should include all three: application, presentation, and session.

Option C) application, presentation, and session - This option is correct because it includes all three upper layer protocols: application, presentation, and session.

Option D) application, presentation, session, and transport - This option is incorrect because it includes the transport layer, which is not part of the upper layers. The upper layers consist of the application, presentation, and session layers.

Option E) application - This option is incorrect because it only includes one out of the three upper layer protocols. The correct answer should include all three: application, presentation, and session.

The correct answer is Option C) application, presentation, and session. This option is correct because it includes all three upper layer protocols according to the OSI model.

Flow control takes place at which layer?
networking osi-model

  1. physical

  2. Network

  3. transport

  4. data link

  5. application

Show answer
Correct Option: C

Encryption takes place at which layer?
networking osi-model

  1. physical

  2. presentation

  3. application

  4. session

  5. data link

Show answer
Correct Option: B

The network layer uses physical addresses to route data to destination hosts.
networking osi-model

  1. True

  2. False

Show answer
Correct Option: B