Practice IB Computer Science (First Exam 2027) Topic A2.4 Network Security with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for A2.4 Network Security and mirrors Paper 1, 2 style where relevant.
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A manufacturing company runs control software that the supplier no longer updates. The software cannot be replaced for two years.
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Staff receive an email that appears to come from their bank and asks them to confirm their password on a linked page. the type of attack and its purpose.
A web application passes text typed by a user into a database query without checking it. the vulnerability this creates.
A student asks why a browser cannot simply trust any public key a website sends it. the problem digital certificates solve.
A company installs a system that monitors network traffic and raises an alert when it observes suspicious activity. this countermeasure and how it differs from one that blocks the traffic.
