Q1 . What is an OSI model?

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SOLUTION

OSI stands for open systems Interconnection model that helps in understanding the flow of data across layer in a network.The OSI model has seven layers namely

>Physical layer

>Data Link Layer

>Network layer

>Transport Layer

>Session Layer

>Presenta

Q2 . What is UDP?

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SOLUTION

UDP stands for user Datagram protocol.It is an alternative TCP (transmission control protocol).Advantages are that it provides

>checksums

> port numbers

disadvantage is that

>No hand shaking so it can have data unreliability.

Q3 . what is SNMP?

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SOLUTION

It stands for simple network management protocol.It is a protocol used to for managing the network data and network device configuarion that are using the network.

Q4 . what is the Physical Layer of OSI model responsible for?

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SOLUTION

It defines the physical method of data transmission like is it going to be through coaxial cable or fibre optics and so on.

Q5 . what is the Data Link Layer of OSI model responsible for?

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SOLUTION

It is used to provide the link between two connected nodes.It also contains sub layers namely

>MAC layer

>LLC layer logical link control layer

Q6 . what is the Network Layer of OSI model responsible for?

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SOLUTION

It is used to transfer the data links or the datagram from one place to another.

Q7 . what is the Transport Layer of OSI model responsible for?

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SOLUTION

It is used to transfer the data sequences from one node to another some protcols in this layer are TCP.

Q8 . what is the Session Layer of OSI model responsible for?

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SOLUTION

It helps connection between remote machines or computers

Q9 . what is the Presentation Layer of OSI model responsible for?

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SOLUTION

The presentation layer is used to present the data in the language the application understands .

Q10 . what is the Application Layer of OSI model responsible for?

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SOLUTION

Application layer is the layer that the user interacts with in close proximity.

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