Web Technologies
16 practice questions with explanations — 15 free to try
1 of these 16 questions are in the free 15-question taster · the full topic is part of Premium
PassNova has 16 CREST CPSA (Practitioner Security Analyst) practice questions on Web Technologies, each with a clear explanation. A 15-question taster is free with no sign-up; the full bank is part of PassNova Premium. Updated for 2026.
Web Technologies: example questions & answers
1 worked example with answers and explanations below. Try 15 CREST CPSA (Practitioner Security Analyst) questions free in the browser; the full 16-question Web Technologies bank is part of PassNova Premium.
Several websites are hosted on a single IP address, and the web server decides which site to serve based on a request field. Which HTTP request header does name-based virtual hosting rely on?
- AThe Host header, which names the site the client is requesting✓
- BThe Accept-Language header, which names the preferred language
- CThe User-Agent header, which names the client's browser
- DThe Referer header, which names the previous page visited
Answer: Name-based virtual hosting uses the Host header so one IP address can serve many sites, with the server selecting the site from the requested hostname. User-Agent identifies the browser, Referer gives the previous URL, and Accept-Language states language preference, none of which selects the virtual host.