Networks

Understanding Network Devices, Security, and Communication Tools

Objectives:

• Discuss the operation of routers and other common network devices

• Explain the use of Wi-Fi and Bluetooth in networks

• Discuss cloud computing and how to store and share data

• Describe network environments and types of networks

• Discuss security issues related to data transfer

• Explain anti-malware software

• Describe electronic conferencing

• Wi-Fi: Wireless network for longer distances, used in homes, offices.

• Bluetooth: Short-range communication for personal devices.

Wireless Networking: Wi-Fi and Bluetooth

What are Network Devices?

• Devices that enable communication between different computers and network components.

​

Network Interface Card (NIC): Connects a computer to the network

​Hub: Broadcasts data to all devices in a network

Hubs

​Switch: Connects devices within a network

​​Switch

A bridge is a network device that is used to connect two or more network segments, making them function as a single network.

​​Bridge

​NIC

Directs data between networks.

​​Router

Multiple Choice

What is a standalone computer?

• A computer that is not connected to a network

• A computer connected to a network

• A network device

• A type of server

Multiple Choice

What is the internet considered?

• A standalone device

• A wide area network

• A local area network

• A type of server

Multiple Choice

What can happen if a network breaks?

• Tasks become easier

• More devices can connect

• Sharing data becomes difficult

• Increased security

Match

Match the following

• Router

• Switch

• Hub

• Bridge

• Network Interface Card (NIC)

Device that forwards data packets between computer networks.

Device that connects devices within a single network.

Device that connects multiple Ethernet devices, making them act as a single network segment.

Device that connects two or more network segments.

Hardware that allows a computer to connect to a network.

• Device that forwards data packets between computer networks.

• Device that connects devices within a single network.

• Device that connects multiple Ethernet devices, making them act as a single network segment.

• Device that connects two or more network segments.

• Hardware that allows a computer to connect to a network.

Multiple Choice

How are most viruses spread?

• Through standalone computers

• Over a network

• By email only

• Via physical access

​What is Cloud Computing?

• Storing and accessing data and programs over the internet instead of local storage.

• Examples: Google Drive, Dropbox, OneDrive

Data Security in Networks

• Importance of secure data transfer.

• Authentication methods: Passwords, multi-factor authentication (MFA).

• Encryption: Securing data by converting it into unreadable form

• Detects and removes harmful software (viruses, spyware).

• Examples: Norton, McAfee, Windows Defender.

​​Anti-malware Software

• Online communication tools used for virtual meetings and data sharing.

• Examples: Zoom, Google Meet, Microsoft Teams.

What is Electronic Conferencing?

Open Ended

Describe three items of hardware that are required for computers to connect to a network.

Internet , Intranet and Extranet

• ​Internet is a public network used globally for various purposes, allowing anyone with access to connect.

• Intranet is a private network used within an organization to share information securely among employees.

• Extranet extends the intranet to external parties, allowing controlled access for business partners, suppliers, or clients.

Categorize

Options (6)

A global network linking billions of computers as well as other electronic devices.

Global communication accessed through the web.

A private network that can be accessed by a company's custome

Allow companies to connect with their customers in a controlled setting.

Accessed by members within a single organisation.

A private and secure network used for sharing information inside a company.

Organize these options into the right categories

Internet

Intranet

Extranet

Multiple Choice

What is a network?

• A standalone device

• Two or more connected devices

• A type of software

• A single computer

Multiple Choice

What is one benefit of using a network?

• Isolation from other devices

• Limited software access

• Ability to share data

• Increased hardware costs

Multiple Choice

What is a major problem that can occur with networks?

• Increased data sharing

• Enhanced software performance

• Exposure to hackers

• Improved communication

Multiple Choice

What is the internet considered?

• A standalone device

• A wide area network

• A local area network

• A type of server

Multiple Choice

How are most viruses spread?

• Through standalone computers

• Over a network

• By email only

• Via physical access

Recap

​Chapter 3: Networks

• Network devices: Routers, switches, NICs.

• Wireless technologies: Wi-Fi and Bluetooth.

• Cloud computing: Storing and sharing data.

• Data security: Passwords, encryption, anti-malware.

• Electronic conferencing: Zoom, Teams, etc.

Homework: Exam Style Questions page 78-79