Introduction to Networks OSI Model
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Questions and Answers

What is the purpose of the Logical Link Control (LLC) sublayer in the Data Link Layer?

The LLC sublayer negotiates with the network layer to identify the address type (IPv4 or IPv6).

What is the role of the Media Access Control (MAC) sublayer in the Data Link Layer?

The MAC sublayer adds the source MAC address and destination MAC address.

In the TCP/IP model, what is the term used for the data unit at the Transport Layer?

The data unit at the Transport Layer is called a segment.

Explain the process of encapsulation in the context of the OSI model.

<p>In the OSI model, each layer adds a header in front of the data from the previous layer. This header contains control information related to the protocol being used at that layer. The header and the data being sent from one layer to the next lower layer is called a Protocol Data Unit (PDU).</p> Signup and view all the answers

What are the devices that operate at the Network Layer in the TCP/IP model?

<p>Routers operate at the Network Layer in the TCP/IP model.</p> Signup and view all the answers

How many layers are present in the TCP/IP model?

<p>4 layers</p> Signup and view all the answers

What is the term used for the data unit at the Data Link Layer in the TCP/IP model?

<p>Frame</p> Signup and view all the answers

What is the purpose of the encapsulation process?

<p>Each layer adds a header in front of the data from the previous layer to contain control information related to the protocol being used at that layer.</p> Signup and view all the answers

Which devices operate at the Physical Layer in the TCP/IP model?

<p>Hubs and repeaters</p> Signup and view all the answers

What is the purpose of the decapsulation process?

<p>To examine and remove the header at the destination</p> Signup and view all the answers

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