OSI Model Overview

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Questions and Answers

What is the primary responsibility of the Session Layer in the OSI model?

Defining the electrical and mechanical aspects of network connections
Establishing and maintaining communication sessions between applications (correct)
Ensuring reliable end-to-end data delivery
Determining the optimal path for data transmission

Which protocol operating at the Transport Layer is known for providing reliable data transmission?

Transmission Control Protocol (TCP) (correct)
Internet Protocol (IP)
Ethernet
User Datagram Protocol (UDP)

What is the primary function of the Network Layer in the OSI model?

Framing data into frames and managing access to the physical medium
Establishing and maintaining communication sessions between applications
Transmitting raw bit streams between devices
Focusing on logical addressing, routing, and forwarding of data packets (correct)

Which layer of the OSI model is responsible for defining the electrical, mechanical, and procedural aspects of network connections?

Physical Layer (C) Signup and view all the answers

What is the purpose of data encapsulation in the OSI model?

To add headers and trailers to data received from the upper layer, forming Protocol Data Units (PDUs) (C) Signup and view all the answers

Which statement about the OSI model is correct?

It is a conceptual framework designed to facilitate communication between devices and hosts using different platforms. (C) Signup and view all the answers

How are the layers of the OSI model categorized?

The upper layers handle application-related interactions, while the lower layers manage data transmission processes. (B) Signup and view all the answers

What is the primary function of the Application Layer in the OSI model?

It mediates communication between user applications and the underlying network. (C) Signup and view all the answers

Which of the following protocols operates at the Presentation Layer of the OSI model?

Data compression and encryption protocols (D) Signup and view all the answers

Why is comprehending the principles of the OSI model important, despite its rare direct application in modern systems?

It serves as a foundational reference for comparing and understanding other networking models, notably the TCP/IP model. (D) Signup and view all the answers