📚 Network Definition: A network is a collection of interconnected devices that can communicate and share resources.

🖥️ Components:
– Nodes: Devices like computers, printers, and servers.
– Links: Connections between nodes, such as cables or wireless signals.

🔒 Network Security:
Definition: Measures and controls to protect the integrity, confidentiality, and availability of network data.

🛡️ Techniques:
– Firewalls: 🧱 Barriers that monitor and control incoming and outgoing network traffic.
– Encryption: 🔑 Scrambling data to make it unreadable without a decryption key.
– Intrusion Detection Systems (IDS): 🚨 Tools that detect unauthorized access or anomalies.
– Virtual Private Networks (VPNs): 🌍 Secure connections over public networks.