GCSE Computer Science: Internet Technologies
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All Computer Science topics are covered, and each module comes complete with:
Classroom Presentations
Revision Notes
Activities & Quizzes
Mind Maps, Flashcards & Glossaries
Frequently Asked Questions
What is the difference between HTTP and HTTPS?
HTTP (Hypertext Transfer Protocol) is a protocol used to transmit data over the internet, while HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that uses encryption to protect data in transit. HTTPS is recommended for transmitting sensitive information such as passwords and credit card numbers.
What is DNS and how does it work?
DNS (Domain Name System) is a system that translates domain names (such as google.com) into IP addresses that computers use to locate web servers. DNS works by storing and managing a database of domain names and IP addresses, and responding to queries from clients that need to locate a particular domain name.
What is VoIP and how does it work?
VoIP (Voice over Internet Protocol) is a technology that enables voice communications over the internet. VoIP works by converting voice signals into digital data packets that are transmitted over the internet, and then reassembling them into audio signals at the other end. VoIP can be used to make phone calls and hold video conferences.
What is SSL/TLS and why is it important?
SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are protocols used to secure internet communications by encrypting data in transit. SSL/TLS is important because it helps to protect sensitive information such as passwords and credit card numbers from being intercepted and read by unauthorized parties.
What is IPv6 and why is it needed?
IPv6 (Internet Protocol version 6) is a newer version of IP that is designed to overcome the limitations of IPv4, which is running out of available addresses. IPv6 uses a longer address format that allows for a much larger number of unique addresses, which is important as the number of devices connected to the internet continues to grow.