Computer Networks: LAN, WAN, and Cloud Networks

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Questions and Answers

What is the primary purpose of a WAN?

To provide high-speed data transfer and full-time service connectivity

To connect LANs together and enable long-distance communication (correct)

To connect devices within a building or campus

To connect devices across a city, town, or other small region

What type of network is used to connect devices within a building or campus?

MAN

LAN (correct)

Cloud Network

WAN

What is the primary characteristic of a MAN?

Connects devices across continents

Provides high-speed data transfer and full-time service connectivity

Uses guided and unguided media

Connects devices across a city, town, or other small region (correct)

What is the Internet?

A worldwide network of interlinked computer networks Signup and view all the answers

What is the primary advantage of a LAN?

It provides high-speed data transfer and full-time service connectivity Signup and view all the answers

What type of network is used to connect devices across a city, town, or other small region?

MAN Signup and view all the answers

What is a characteristic of Cloud Networks?

They are available on demand and can be hosted on public or private cloud service providers Signup and view all the answers

What is a characteristic of WANs?

They are used to connect devices across continents and can use technologies like microwave, radio, and fiber optic Signup and view all the answers

What is the primary function of an Access Point or Router in Wi-Fi technology?

To accept a wired Ethernet connection and convert it to a wireless connection Signup and view all the answers

What type of waves are used to transmit networks in Wi-Fi technology?

Radio waves Signup and view all the answers

What is the main host network that provides a network connection to the router in Wi-Fi?

Base station network or an Ethernet (802.3) connection Signup and view all the answers

What is the purpose of a Sensor Network?

To monitor data in different locations and send it to a central location Signup and view all the answers

What is the primary function of a web browser?

To facilitate user interaction with the World Wide Web's data Signup and view all the answers

Which of the following is NOT a type of Electromagnetic wave?

Ethernet Signup and view all the answers

What is the collective term for all public websites or web pages accessible on the internet?

World Wide Web Signup and view all the answers

What is the primary function of a Vehicular Communication System?

To enable communication between vehicles and roadside units Signup and view all the answers

What is the role of an Accessing Device in Wi-Fi technology?

To use Wi-Fi and surf the internet Signup and view all the answers

What is the primary purpose of HTTP?

To specify communication between the browser and server Signup and view all the answers

In what year was the World Wide Web originated?

1989 Signup and view all the answers

What is the medium used in Wi-Fi technology to transmit data?

Radio frequencies Signup and view all the answers

What is the function of URL?

To provide a system for resources on the web Signup and view all the answers

What is the main difference between the World Wide Web and the Internet?

The World Wide Web is an interconnected network of websites, while the Internet connects computers Signup and view all the answers

What is HTML used for?

To define the structure, organisation and content of a web page Signup and view all the answers

What are the three components of the web?

URL, HTTP, and HTML Signup and view all the answers

What is the primary objective of Computer Vision?

To collect information from images Signup and view all the answers

Which of the following is NOT an application of Computer Vision?

Natural Language Processing Signup and view all the answers

What is one of the stages involved in the Natural Language Processing process?

Data preprocessing Signup and view all the answers

Which of the following is an application of Natural Language Processing?

Voice recognition Signup and view all the answers

What is the primary focus of Natural Language Processing?

Enabling machines to understand and generate human language Signup and view all the answers

What is one of the benefits of Natural Language Processing in businesses?

Simplifying complex tasks that involve language Signup and view all the answers

What is an application of Computer Vision in smartphones?

Photo filters Signup and view all the answers

What is NOT a stage involved in the Natural Language Processing process?

Data analysis Signup and view all the answers

What should happen to an employee's data in all departments when they leave an organization?

It should be updated to reflect their status as JOB LEFT Signup and view all the answers

What is meant by the term 'availability' in the context of information?

Data should be available when needed Signup and view all the answers

Why is collaboration from different organizational teams necessary to access employee information?

To check employee leave records Signup and view all the answers

What is the primary goal of Security Policies in an organization?

To comply and achieve cybersecurity goals Signup and view all the answers

What is cybersecurity primarily concerned with protecting?

Systems, networks, and programs from digital attacks Signup and view all the answers

What is the primary purpose of cybersecurity practice?

To defend against unauthorized access to critical information Signup and view all the answers

What is malware primarily used to describe?

Malicious software, including spyware and ransomware Signup and view all the answers

How do malware breaches typically occur?

When a user clicks a dangerous link or email attachment Signup and view all the answers

Study Notes

Types of Networks

LAN (Local Area Network): connects devices within a building or campus, often used in small offices or homes, providing high-speed data transfer and full-time service connectivity.
MAN (Metropolitan Area Network): connects devices across a city, town, or other small region, used to connect multiple LAN networks, providing high-speed regional resource sharing.
WAN (Wide Area Network): connects devices across continents, the largest networks, using technologies like microwave, radio, and fiber optic, compatible with various access lines, and having advanced security.

The Internet

The Internet is a worldwide network of interlinked computer networks, communicating with other networks and devices using the TCP/IP Internet protocol suite.
It connects private, public, academic, corporate, and government networks, spanning local to global boundaries.
The Internet provides various information resources and services, including email, phone calls, file sharing, and the World Wide Web (WWW).

World Wide Web (WWW)

The WWW is a network of interlinked websites and documents accessible via the Internet.
It originated in 1989 and uses protocols such as HTTP.
The WWW is a service contained inside the Internet infrastructure.

Components of the Web

Uniform Resource Locator (URL): a system for resources on the web.
Hyper Text Transfer Protocol (HTTP): specifies communication between browsers and servers.
Hyper Text Markup Language (HTML): defines the structure, organization, and content of a web page.

Wi-Fi

Wi-Fi is a wireless networking technology, using radio frequencies to transmit data in a circular range.
It uses electromagnetic waves to transmit networks, specifically radio frequency.
Wi-Fi has three medium components: base station network or Ethernet connection, access point or router, and accessing devices.

Sensor Networks

A sensor network is a group of sensors monitoring data in different locations, sending data to a central location for storage, viewing, and analysis.
Applications of sensor networks include monitoring homes, cities, and earthquake detection.

Vehicular Communication Systems

Vehicular communication systems are computer networks where vehicles and roadside units are communicating nodes, providing each other with information such as safety warnings and traffic information.

Cybersecurity

Cybersecurity is the practice of protecting systems, networks, and programs from digital attacks, aimed at accessing, changing, or destroying sensitive information.
Cybersecurity safeguards internet-connected systems, including hardware, software, and data, from malicious attacks.
Common types of cyber attacks include malware, ransomware, viruses, and worms.

Artificial Intelligence

Computer Vision

Computer Vision is a branch of Artificial Intelligence that teaches machines to collect information from images.
Applications of Computer Vision include medical imaging, AR/VR, smartphones, and the Internet.

Natural Language Processing (NLP)

NLP is a field that intersects computer science, artificial intelligence, and linguistics, focusing on the interaction between computers and human language.
NLP enables machines to understand, interpret, and generate human language, powering applications such as text translation, voice recognition, text summarization, and chatbots.
The NLP process involves two main stages: data preprocessing and algorithm development.

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Description

This quiz tests your knowledge of different types of computer networks, including LAN, WAN, and cloud networks, and their applications.