Computer Hardware - Study Mode

[#106] What resistance in ohms should be displayed when testing a speaker in a computer?
Correct Answer

(B) 16 Ohms

[#107] What product is used to clean smudged keys on a keyboard?
Correct Answer

(C) Denatured alcohol

Explanation

Solution: Denatured alcohol is commonly used to clean smudged keys on a keyboard. It is effective in removing oils, dirt, and grime from keyboard keys without damaging the plastic or rubber components. TMC solvent and silicone spray are not typically used for cleaning keyboard keys. An all-purpose cleaner may be too harsh for delicate electronic components and is not recommended for cleaning keyboards. Therefore, the correct option is denatured alcohol.

[#108] ESD would cause the most damage to which component?
Correct Answer

(B) Expansion board
(F) Expansion board

Explanation

Solution: ESD (Electrostatic Discharge) would cause the most damage to the Expansion board . Expansion boards, such as graphics cards, network cards, and sound cards, are particularly vulnerable to damage from static electricity. When not handled properly, ESD can discharge through these components, causing irreversible damage to sensitive circuits. While other components like the power supply, monitor, and keyboard can also be affected by ESD, expansion boards are typically more susceptible due to their intricate circuitry and exposed connectors. Therefore, the correct option is Expansion board.

[#109] Which type of system board is the MOST likely candidate for processor upgrading if you want maximum performance and future compatibility?
Correct Answer

(A) ML

Explanation

Solution: The ML (MicroATX or Mini-ATX) type of system board is the MOST likely candidate for processor upgrading if you want maximum performance and future compatibility. MicroATX boards are designed to be compact while offering performance and compatibility similar to their larger ATX counterparts. They often feature modern processor sockets such as Intel's LGA 115x or AMD's AM4, allowing for easy CPU upgrades. PCI, ISA, and EISA are expansion bus standards and are not directly related to processor compatibility and upgrading. Therefore, the correct option is ML.

[#110] Most PCs give a single beep on bootup to indicate they are ok hardware wise. You boot your PC and don't get a beep. What should you check first?
Correct Answer

system board

Explanation

Solution: Most PCs give a single beep on bootup to indicate they are okay hardware-wise. If you boot your PC and don't get a beep, you should check the speaker first. The absence of the beep could indicate a problem with the speaker itself, preventing it from producing the beep code that signifies normal bootup. Checking the speaker connections and ensuring it is properly connected to the motherboard or sound card can help diagnose if the lack of beep is due to a faulty speaker. While issues with the system board, RAM, microprocessor, and power supply can also cause boot problems, the absence of the beep specifically points to a potential issue with the speaker. Therefore, the correct option is the speaker.