Computer Science

when code runs on the user's device (the client)

when code runs on a web server and then the content is sent to the user’s browser

a program used by search engines to browse and collect information from websites

the process of improving how a website appears in search engine results

Web technologies

Internet fundamentals

How data travels across the internet

Protocols

Network models

The TCP/IP model

Hosting services

Threats to networks

Network security

In this unit pupils will explore how data travels across the internet. They will explore how protocols define communication between devices and the purpose of common network protocols. They will investigate the risks to networks and the methods that can be used to protect a network.

The internet and web technologies

Code runs after the page loads in your browser.

Code runs on a web server before you see the page.

Which of these best describes server-side processing?

Code runs on both server and client at the same time.

Code runs on the search engine’s database.

What do search engines use to collect and organise information from websites before you search?

Search engine checks the index for relevant results.

Arrange these steps for how a search engine returns results:

website changes title tags to appear higher in search results

website content is created after you log in

search engine gathers new website content

They use crawlers to index sites before you search.

They search the web in real time every time you search.

They only find websites that are updated daily.

Which statement about search engines is true?

to host and provide services to other devices

What is the main role of a server on the internet?

manages internet connections for everyone

What does a client do in a client–server model?

Which of these is an example of a cloud service?

What is the process of making a website available on the internet called?

Arrange these steps for accessing a cloud-based document.

Web technologies

Lesson outcome