HOMEWORK WEEK 4
Learn the utility programs that are used for computer security, disk organisation and system maintenance, then test yourself on socrative.com...
1) Go to socrative.com
2) Click on the Student Login button
3) Enter room number VUIX6AL3
UTILITY PROGRAMS FOR COMPUTER SECURITY
Antivirus
Detects and removes viruses (self-replicating programs which can corrupt files and prevent the system from rebooting).
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Spyware protection
Checks for and removes programs that record websites you visit and password you use.
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Firewalls Monitors traffic entering the computer system to block unauthorised access (from hackers).
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UTILITY PROGRAMS FOR DISK ORGANISATION
Formatting
Prepares new media (e.g. a flash drive) for receiving data.
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File Transfer
Copies files from one location to another (FTP used to copy across a network)
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Defragmenter
The memory on secondary storage (e.g. a hard disk drive) is divided into segments, but files are often larger than the size of a segment. So when files are saved, they are often split into ‘blocks’ across many segments. The defragmenter aims to bring these ‘blocks’ closer together making it quicker to access to the file.
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UTILITY PROGRAMS FOR SYSTEM MAINTENANCE
System Cleanup
Searches for and deletes files/programs which are no longer used (e.g. temporary files / installation files). Deletes settings / registry values which are no longer used.
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System Information
Displays important data about the current state of the computer (e.g. temperature, free memory, network speed, % processor used).
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