2. Exploring Computer Hardware and Networks
OCR Cambridge Nationals in
ICT
(Level 1/2)
R009
Exploring Computer Hardware and Networks

3. When these are all working together, the computer functions well.
Components
Computers are made up of different components that work together.
Inside the average PC or Mac you will find:
RAM
ROM
a hard disk
a DVD player
a main board
various cables
a screen
a keyboard.
When these are all working together, the computer functions well.

4. In recent years, computing has moved away from the large desktop.
Mobile Technologies
Laptops, Netbooks, Tablets and Smartphones allow the user to be portable and productive at the same time.
Devices such as the Kindle, Nintendo DS and MP4 players allow for mobile entertainment to be readily accessible.
In recent years, computing has moved away from the large desktop.

5. Games Consoles
Most UK homes have a games console allowing for streaming video, movement gaming, music playback, photo displays and online purchasing.
Combine a console with a home network and services such as Xbox live widen the gaming experience to a global scale.

6. Network Topology
Networks are found in the majority of businesses and many homes have smaller networks now.
Wired networks can be set up in different ways such as Star and Hierarchical.
Virtual servers and thin client computing have reduced the cost and increased the speed for modern networks.

7. Types of Network
Networks are found in homes, offices, schools, hospitals and in many other places.
Wireless networks are now used to attract shoppers and the mobile telephone networks grow larger every year.
Selecting the right kind of network for the organisation and then setting it up takes specialist skills.

8. Computer or connection problem?
Computer repair
Like all things, computer hardware fails at times. Some things can be fixed with a minimum of technical support whilst others require an IT expert.
Knowing what to look for is as important as knowing how to fix the problem.
Computer or connection problem?
Repair or replace?

9. Network issues
When a network component fails or is wrongly configured it can lead to a loss of productivity and profits.
Completing diagnostics and knowing how to perform the right tests will help the users get up and running again quickly.
Which cable? What server? WEP or WPA? Is the route clear? Are the lights flashing?

10. You will learn…
What it means to be an ICT technician supporting users.
IP addresses, MAC addresses and network types.
Common computer problems and how to fix them quickly.
Assistive technologies for
specified needs.
Computer hardware components and how they work.
LANs, WANs, IDs, CAT5, WiFi and PING.

11. Other OCR resources are available at www.ocr.org.uk
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