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lyudmila [28]
3 years ago
7

What is the protocol? What does it do? What layer of the OSI Model does it support?

Computers and Technology
1 answer:
melomori [17]3 years ago
3 0

Answer:

Protocol: It is a set of rules that govern communication over electronic devices. It is bridge between two devices to communicate with each other. All layers of  OSI model support some protocol features of communication between devices over internet.

Explanation:

What is the Protocol

A protocol is a set of rules that govern communication over electronic devices that how to communicate with each other. These sets of rules include how to send data, what type of data may be transmitted, and how to receive the data and how to confirm that, data has been transmitted successfully.

You can think about protocol as a spoken language between two people. Therefore, people can understand their language easily if both know its rules and vocabulary. That means, if both people can speak with each other in the same language then they can communicate effectively with each other.

Similarly, if two devices support the same protocol, regardless of the type of device or manufacturers, they can communicate with each other effectively. For example, an android device can send email to an iPhone device using a standard mail protocol.

Today different Protocols exist for several different applications. For example wired networking (e.g. Ethernet), wireless networking (e.g. 802.11ac) and internet communication (e.g. IP).

The Internet protocol contains dozens of protocol which is used for transmitting data over the Internet. The protocol may be broken into four categories.

1. Link layer

2. Internet layer

3. Transport layer

4. Application layer

<u>OSI Model and Its Layers</u>

The Open System Interconnection (OSI) model is a conceptual model that is created by the International Organization for Standardization (ISO) which uses a standard protocol to enable communication between devices. In short, the OSI model provides a standard of communication between different computer systems. It has 7 layers, each layer has its own functionality as described below:

  1. Physical layer: Transmits raw bitstream over the physical medium
  2. Data link layer: Define the format of data on the network
  3. Network layer: Decide which physical path the data will take
  4. Transport layer: Transmit data using transmission protocols including UDP and TCP
  5. Session layer: Maintains connections and is responsible for controlling sessions and ports
  6. Presentation layer: Ensure that data is in a usable format and is where data encryption occur
  7. Application layer: Human-computer-interaction layer, where the application can access the network services

<u></u>

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Answer:

Following are the program to the given question:

num = input("Enter numbers: ")#defining a variable num for input value  

list1 = num.split()#defining a list1 that adds value in list1  

list2 = []#defining an empty list list2

for j in range(len(list1)):#defining a for loop that checks the list value in range  

   if not list1[j] in list2:# use if block that checks multiple value

       list2.append(list1[j])#add value in list2

print("The distinct numbers are: ")#print message

for j in range(len(list2)):#defining for loop for print list value

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Output:

Enter numbers: 1 22 55 7 22 1 1 2 3

The distinct numbers are:  

1

22

55

7

2

3

Explanation:

In the above-code, a "num" variable is defined, that takes inputs from the console screen, and in the next step, "list1 and list2" is defined. In the "list1" it adds num variable value a into the list.

In the next step, a for loop is defined that checks the list value in range , and define an if block, that checks multiple value and add value into the list2, and in the next step, the for loop is defined that prints the list2 values.    

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