ACCA BT · Chapter 6 · Question 7 of 11
Which of the following controls is specifically designed to prevent unauthorised external access to an organisation's network from the internet?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) A firewall
Explanation
A firewall monitors and filters traffic between the internal network and external networks, blocking unauthorised access. Back-ups, an uninterruptible power supply and a disaster recovery plan help an organisation recover from or withstand data loss and disruption, but they do not prevent intrusion.
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