2. In cleaning different computer components without scratching, which tool should
be used?
A. lint-free cloth
C. soft brush
B. paper towel
D. soft cloth
3. To blow away dust and debris from different computer parts without touching the
components, which material will be used?
A. Air Spray
C. Compressed Air
B. Blower
D. Vacuum Cleaner
4. If there is a modification to a system requirement, which maintenance is best
needed?
A. Device Utility Maintenance
C. Software Maintenance
B. Hardware Maintenance
D. System Maintenance
5. To free up the disk space on a computer's hard drive, which utility maintenance in
Microsoft Windows should be used?
A. Back up
C. Defragmentation
B. Check disk
D. Disk Clean up​