Introduction to Data Communications Chapter 1

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Questions and Answers

What layer is responsible for making routing decisions?

Physical Layer

Transport Layer

Data Link Layer

Network Layer (correct)

Which layer initiates, maintains, and terminates logical sessions between sender and receiver?

Data Link Layer

Presentation Layer

Network Layer

Session Layer (correct)

Which layer defines how individual bits are formatted to be transmitted through the network?

Data Link Layer

Presentation Layer

Transport Layer

Physical Layer (correct)

Which layer formats data for presentation to the user and provides data interfaces, data compression, and translation between different data formats?

Application Layer Signup and view all the answers

What were the key changes brought about by the Second Industrial Revolution?

Introduction of computers and networking Signup and view all the answers

What are the three parts to understanding networking as mentioned in the text?

Concepts of networking, technologies in use today, management of networking technologies Signup and view all the answers

What are the components of a Local Area Network as described in the text?

Server, client, pathway through which messages travel Signup and view all the answers

What was the significant change in the time taken for information transmission from pre-1850s to 2007 as mentioned in the text?

Information transmitted in minutes or hours to large quantities transmitted in a fraction of a second Signup and view all the answers

What type of network connects LANs and BNs across different locations?

Metropolitan Area Network (MAN) Signup and view all the answers

Which network type shares a high-speed backbone linking together organizational LANs at various locations?

Backbone Network (BN) Signup and view all the answers

What is the main difference between an intranet and an extranet?

Intranet uses the Internet technologies within an organization, while extranet is accessible through the Internet. Signup and view all the answers

Which layered network model is based on 7 layers and was created by the International Standards Organization (ISO)?

OSI Model Signup and view all the answers

What is the purpose of breaking down networking into smaller components?

To make networking easier to implement Signup and view all the answers

What does MAN stand for in the context of network types based on scale?

Metropolitan Area Network Signup and view all the answers

Study Notes

Network Fundamentals

The network layer is responsible for making routing decisions.
The transport layer initiates, maintains, and terminates logical sessions between sender and receiver.

Data Transmission

The physical layer defines how individual bits are formatted to be transmitted through the network.

Data Presentation

The presentation layer formats data for presentation to the user and provides data interfaces, data compression, and translation between different data formats.

Industrial Revolution

The Second Industrial Revolution brought significant changes to the way industries operated.

Networking Basics

Understanding networking involves three parts: devices, media, and network protocols.

Local Area Network (LAN)

A LAN consists of three components: devices, media, and network protocols.

Network Evolution

The time taken for information transmission decreased significantly from pre-1850s to 2007.

Network Types

A Wide Area Network (WAN) connects LANs and Basic Networks (BNs) across different locations.
A Metropolitan Area Network (MAN) shares a high-speed backbone linking together organizational LANs at various locations.

Network Access

The main difference between an intranet and an extranet is that an intranet is accessible only to an organization's members, while an extranet is accessible to partners and suppliers.

Network Models

The OSI (Open Systems Interconnection) model is a 7-layered network model created by the International Standards Organization (ISO).

Networking Approach

Breaking down networking into smaller components helps to understand and manage complex networks more efficiently.

Network Terminology

MAN stands for Metropolitan Area Network in the context of network types based on scale.

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Description

Explore the history of data communications, including the impact of the Information Age and the Industrial Revolutions on networking and communication. Learn about the introduction of machinery, computers, networking, and data communication, and how these developments transformed the way people worked.