One server, many jobs
A school has one small server in a cupboard. It hosts the school web site, holds the student records and checks every computer for viruses.
It also decides who may log in. What software makes all that possible? That is today's question.
By the end of this lesson
Note
I can name the service a server needs for a job and say what its main software manages.
Key words
| Word | What it means |
|---|---|
| Web server | a server that sends web pages to browsers |
| Database | an organised store of records that many users share |
| Antivirus | software that finds and removes malware |
| Malware | software made to cause harm |
| Operating system | the software that runs a computer and its programs |
| Network operating system | an operating system built to run services for many users |
| DNS | a service that finds the address for a site name |
| Permission | a right to open, change or delete something |
The cells students fill in are left blank in this preview.
Starter: what you already know
Have a go
Starter: what you already know
3 questionsYour answers are marked here and are not kept. A college account keeps every student’s marks.
Three application services
A web server waits for a browser to ask for a page, then sends it. Schools use one for the web site and for the learning portal.
A database keeps records, such as student names or stock. One copy is shared, so everyone sees the same data.
Antivirus scans files and programs for malware. It checks them against a list of known threats and watches for odd behaviour. The list needs regular updates.
What each service needs
| Service | Used for | What it needs to run well |
|---|---|---|
| Web server | Showing pages and portals | A steady connection and enough memory for many visitors |
| Database | Shared records | Backups, enough storage and careful permissions |
| Antivirus | Finding malware | Regular updates and a scan schedule |
The cells students fill in are left blank in this preview.
Check
Have a go
Check
4 questionsYour answers are marked here and are not kept. A college account keeps every student’s marks.