What is a Network?

Network means:

• A group of connected computers/devices
• Used to share data, resources, and communication

Types of Networks

What is the Internet?

Internet means:

• Global network connecting millions of devices
• Allows communication worldwide

Used for:

• Browsing websites
• Emails
• Video calls
• Online classes
• Social media

 Basic Network Devices

Important Devices:

• Router
• Switch
• Modem
• Access Point
• Ethernet Cable

Their role:

• Connect devices
• Transfer data
• Provide internet access

Communication Methods

Ways devices communicate:

• Wired connection
• Wireless connection
• Wi-Fi
• Bluetooth
• Mobile data

Internet Services

Common Services:

• Web browsing
• Email
• Cloud storage
• Video conferencing
• Online banking
• E-commerce

 IP Address Basics

IP Address:

• Unique address of a device on network
• Example: 192.168.1.1

Purpose:

• Identifies sender and receiver

Safety and Security

Important Practices:

• Strong passwords
• Firewall
• Antivirus
• Secure websites (HTTPS)
• Avoid phishing links

Common Student Mistakes

Mistakes:

• Weak passwords
• Sharing personal data
• Clicking unsafe links
• Public Wi-Fi misuse
• Ignoring software updates

Practical Student Tasks 

Activities:

1. Identify network devices
2. Connect to Wi-Fi
3. Find IP address
4. Create email account
5. Practice safe browsing
6. Understand browser settings

Career Relevance

Learn networking basics to thrive in the digital era.