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SingaporeComputer ScienceQuick questions
Networks and the Internet
Quick questions on DNS and web protocols explained: H2 Computing
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the Domain Name System?Show answer
Computers route to each other by numeric IP addresses, but people use memorable domain names like example.com. The Domain Name System (DNS) translates names to IP addresses. It is:
What is the client-server model?Show answer
The web uses a client-server architecture: the client (browser) requests resources, and the server stores and serves them. Many clients share one server. Communication follows a request-response cycle.
What is hTTP request-response?Show answer
HTTP is the application-layer protocol of the web:
What are hTTPS?Show answer
HTTPS is HTTP over an encrypted TLS connection. It adds:
What is q1?Show answer
What does DNS translate, and into what? [1 mark]
What is q2?Show answer
Describe the request-response cycle of HTTP. [2 marks]
What is q3?Show answer
State two things HTTPS adds over HTTP. [2 marks]
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