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3 years ago

"Explain the functionality of the different layers found in the network protocol stack of an operating system such as Linux"

Computers and Technology

1 answer:

arsen [322]3 years ago

5 0

Answer:

There are 7 layers in linux.

Explanation:

As networking is difficult and complex.

Imagine if every application had to know how to communicate on every step that would be more than just complex. So, rather than reinvent something which will help it to communicate let’s just make something that will automatically controls the communication and for that protocols came in to live.

As for the linux operating system, it is not exceptional from other operating systems.

There are 7 layers on network protocol stack use to communicate with other network protocol stack.

1. Application layer

2. System call interface

3. Protocol agnostic interface

4. Network protocol

5. Device agnostic interface

6. Device drivers

7. Physical hardware

All the layers vary in their functionality.

One more important thing to remember is that the network protocol stack layers is not one way its 2 way communication. First, when a client request to a network and second, when the request is full filled.

The top most layer is a part of user space, the next five layers comes in the kernel space and the final layer is the physical layer.

Application layer:

When a client or user request to a network the request initially comes to this layer.

On this layer we use tcp/ip protocol.

System call interface(SCI):

When application layer make a call to the kernel this layer handles that call. And take the request to the next layer.

Protocol agnostic interface:

This layer has two functions “talking” or “listening”. There is a thing called sockets which perform these functions and each socket has an id which is used specifically for an application.

Network protocol:

This layer is used for how the data is sent or received.

Device agnostic interface:

It is used to connect data from/to kernel user space and the network device drivers which allows the data to prepare itself for transmission over the medium from the network device.

Physical hardware :

This layer is responsible for the data packets transmission and received from the network medium being used whether cable or wireless.

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Recursion is a natural use for a _____ (stack or queue)

alisha [4.7K]

Answer:

Stack

Explanation:

Any function that call itself can be regarded as recursive function, it should be noted that Recursion is a natural use for a stack, especially in the area of book keeping.

Recursion is very important because some of problems are usually recursive in nature such as Graph and others, and when dealing with recursion , only base and recursive case is needed to be defined.

Some areas where recursion is used are in sorting and searching.

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3 years ago

Isabela wants to modify one of her paragraphs. However, she does not find the command she needs in the Paragraph group. She know

cluponka [151]

Answer:

Editing button

Explanation:

Editing is changing therefore if she wants to modify her work she would be changing it.

Hope that helped :)

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3 years ago

Read 2 more answers

High capacity circuits are limited by the least capable network link, which is typically the user connection. As such, it is imp

Mariana [72]

The answer is “true”

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3 years ago

A. True

svetlana [45]

Answer : True

Explanation: Vectors can hold, data of the same type and can automatically expand accordingly and change it’s size. The date stored in vectors should be linear.

- The syntax for vector is vector<int>v;

- Mostly this is used in C++ as an alternative to arrays

- If you want to use vector in your program then define it in the header first i.e.

#include <vector>

- Push back is a function, that is used to insert an element into the vector

- Pop back removes the element from the vector

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3 years ago

If you configure any more passwords on the switch, will they be displayed in the configuration file as plain text or in encrypte

Elza [17]

Answer:

The "service password-encryption" global configuration command encrypts passwords configured before and after the command is issued.

Explanation:

A switch is an intermediate network device that is used to transfer frames to nodes on its collision domain. It operates in the Data-link layer of the OSI model.

Switches uses media address control (MAC) table, containing the MAC addresses of the nodes in the network, to determine the destination of nodes.

In the global configuration mode in a switch, the password and other protocols are configured. The service password-encryption command in the global execution mode encrypts passwords configured before and after the command.

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3 years ago