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The Security Castle
The Security Castle
Think of network security like protecting a castle. Firewalls are the walls and gates - controlling who enters. Encryption is writing messages in secret code - even if intercepted, they can't be read. Access control is like guards checking IDs at doors. Penetration testing is hiring friendly spies to find weaknesses before enemies do. Backups are your treasure copies stored elsewhere. Defence in depth - multiple layers of protection!
Network Security Overview
Network security involves multiple layers of defence (defence in depth) to protect systems, networks, and data from attacks. No single security measure is perfect, so organisations use multiple complementary methods.
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Quiz · Question 1 of 19
What is the primary purpose of a firewall?
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This topic in real past papers
Every real exam question we've found on prevention methods, with a full worked answer.