Tag: networking

Questions Related to networking

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

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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

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Correct Option: D

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

  1. TCP and UDP

  2. ATM

  3. CISC

  4. HTTP and FTP

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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

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

AI Explanation

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

The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a communication system into seven different layers. These layers are:

  1. Physical Layer: This layer deals with the physical transmission of data over the network, including the electrical and mechanical specifications of the physical media.

  2. Data Link Layer: This layer provides reliable data transfer between two directly connected nodes and is responsible for error detection and correction.

  3. Network Layer: This layer is responsible for the routing of data packets across different networks. It determines the best path for data transmission and handles logical addressing.

  4. Transport Layer: This layer provides end-to-end reliable data transfer between hosts. It ensures that data is delivered in the correct order and without errors.

  5. Session Layer: This layer establishes, manages, and terminates communication sessions between applications.

  6. Presentation Layer: This layer handles data formatting, encryption, and compression for the application layer.

  7. Application Layer: This layer provides services directly to the end user or application, such as file transfer, email, and web browsing.

Based on the given options, flow control takes place at the transport layer (Option C). The transport layer is responsible for controlling the flow of data between two hosts to ensure that neither the sender overwhelms the receiver nor the receiver gets overloaded with data.

Therefore, the correct answer is C. transport.

Encryption takes place at which layer?
networking osi-model

  1. physical

  2. presentation

  3. application

  4. session

  5. data link

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Correct Option: B

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

  1. True

  2. False

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Correct Option: B

Error detection and recovery takes place at which layer?
networking osi-model

  1. transport

  2. presentation

  3. data link

  4. netwrok

  5. application

Show answer
Correct Option: A
Explanation:

To answer this question, the user needs to know about the different layers of the OSI model and their functions.

Error detection and recovery are functions that are performed at different layers of the OSI model, but the most common layer where it takes place is the Transport layer.

Options A, B, and E are incorrect because error detection and recovery do not take place at the Transport layer.

Option C, Data Link layer is also incorrect, because this layer is responsible for error detection and correction only for the local network segment.

Option D, Network layer is also incorrect, because this layer is responsible for routing and logical addressing.

Therefore, the correct answer is:

The Answer is: A (Transport)

Which layer establishes, maintains, and terminates communications between applications located on different devices?
networking osi-model

  1. application

  2. session

  3. transport

  4. netwrok

  5. data link

Show answer
Correct Option: B