CSS REVIEW

Which device connects multiple Ethernet devices but lacks intelligence in data transmission?

• hub

• modem

• router

• switch

According to the Philippine Electrical Code (PEC), network cables should be installed in __________ to avoid tangling and physical damage.

• designated raceways

• near power lines

• open air

• unprotected surfaces

What type of cables should be used to prevent the spread of fire in case of an electrical fault?

• aluminum-based cables

• regular copper cables

• fire-retardant cables

• plastic-coated wires

Which of the following is an example of fire safety when working with computers?

• Covering computer vents with plastic.

• Keeping flammable materials away from electronics

• Plugging multiple devices into one outlet

• Using paper towels to clean inside the Central Processing Unit (CPU).

How does the hard drive differ from Random Access Memory (RAM)?

• RAM stores data permanently, while the hard drive holds temporary data.

• RAM works even when the computer is off, but the hard drive does not.

• The hard drive is used for long-term data storage, while RAM temporarily holds active data.

• The hard drive is used only for running programs, while RAM is for permanent storage.

The Philippine Electrical Code (PEC) is designed to ensure:

• Faster internet connection speeds.

• The compatibility of network devices.

• The protection of computers from viruses.

• The safety of electrical wiring and installations.

Why should network cables be at least 50mm away from power cables?

• to allow easy access for maintenance

• to improve the internet speed

• to minimize electromagnetic interference (EMI)

• to prevent overheating of power lines

If power and data cables must cross, how should they be arranged?

• parallel to each other to reduce signal disruption

• perpendicularly to reduce signal disruption

• randomly positioned for better connection

• wrapped around each other for better connection

Why is it important to use only PEC-certified cables, raceways, and connectors?

• to ensure quality, longevity, and compliance

• to increase internet speed

• to make installations faster and cheaper

• to reduce the weight of network installations

Why is RAM important for computer performance?

• It cools down the system to prevent overheating.

• It provides power to the CPU.

• It stores all files permanently.

• It temporarily holds data for quick access by the processor.