CSS Grade Preliminary Examinations

Before disassembling a computer, what is the most important first step to ensure safety?

• Take out the CPU

• Switch the computer on to test for errors

• Unplug it from the power source

• Remove the hard disk

What happens if the reset switch connector of the front panel is placed incorrectly on the motherboard?

• The system may not power on

• The reset button may malfunction or cause unexpected restarts

• The USB ports will fail to work

• The hard drive won’t be detected

Which tool should be used first when troubleshooting a PC that won’t power up, and why?

• Power supply tester, because it quickly confirms PSU status

• Multimeter, because it gives detailed voltage output

• Screwdriver, to open the case

• Multimeter, since it can test PSU and other parts

Why is a printer considered an output device?

• Because it converts digital files into printed form

• Because it reads paper documents and sends data to a PC

• Because it scans and digitizes physical files

• Because it keeps digital files in storage

Why is labeling and categorizing components important during inventory?

• To make the desk look neat

• To make reassembly easier and more accurate

• To avoid unnecessary documentation

• To show neat labeling ability

A technician struggles to open a computer case even after removing visible screws. What should be checked?

• Power supply status

• Hidden latches or screws under stickers or feet

• RAM modules’ position

• Case–motherboard compatibility

Which core function of an operating system distributes CPU time among processes?

• Memory handling

• File management

• Process management

• Access and security control

Which type of screwdriver is more suitable when tightening screws on a motherboard?

• Phillips screwdriver, because motherboard screws are crosshead

• Flathead screwdriver, for more torque

• Phillips screwdriver, because it avoids slippage and damage

• Flathead screwdriver, since it works for multiple screw types

Which connector on the front panel lets the user turn the PC on and off?

• CPU connector

• Power switch connector

• USB port connector

• Hard disk connector

What is the key advantage of using a digital multimeter compared to an analog one when troubleshooting PC faults?

• Analog is more detailed

• Digital provides higher accuracy and is easier to read

• Analog measures wider ranges

• Digital lasts longer and resists higher voltages