IT Essentials Exam Study Guide

1. In which situation would an ESD strike potentially cause harm to the PC?

• when replacing a mechanical hard drive with an M.2 SSD

• when installing an additional display in a workplace cubicle

• when using a grounded mat and working on a computer on an ungrounded workbench

• when installing a dual-voltage power supply

2. A person has started a new technical job. In which situation would ESD be an issue?

• when using a grounded mat and working on a computer on an ungrounded workbench

• while exchanging one laptop AC adapter with one that is not from the original equipment manufacturer

• when installing a processor

• when installing a dual-voltage power supply

3. A technician is about to begin preventive maintenance on a company PC. In which situation would ESD be an issue?

• when installing a dual-voltage power supply

• while attaching speakers to a surround sound card

• when using a grounded mat and working on a computer on an ungrounded workbench

• when replacing a motherboard

4. An instructor has given a student an assignment to assemble a PC. In which situation should the student be aware that ESD is an issue?

• when installing RAM

• when installing a dual-voltage power supply

• when using a grounded mat and working on a computer on an ungrounded workbench

• when working in a corporate environment that has carpet installed under tower PCs

5. What two motherboard components control the system boot operations? (Choose two.)

• BIOS chip

• Northbridge chip

• CPU

• UEFI chip

• Southbridge chip

6. A technician is upgrading an ATX motherboard with another ATX motherboard. Which component might be affected by this and need to be upgraded and bought as an additional purchase?

• BIOS

• chipset

• CMOS battery

• CPU

• PCIe adapter

7. A customer has requested that a PC be built that will support eSATA. Which component should be checked to be sure that this feature is supported?

• CPU

• chipset

• hard disk

• RAM module

8. Which memory module used to hold instructions for booting a PC and loading the OS, but is still used on adapters even though the memory contents cannot be changed?

• RAM

• ROM

• cache

• main memory

9. What is a characteristic of DDR SDRAM?

• It transfers data twice per clock cycle compared to once per clock cycle for SDRAM.

• DDR SDRAM modules have double the number of pins of SDRAM memory modules.

• It is dynamic memory whereas SDRAM is static memory.

• It operates at double the voltage of SDRAM memory.

10. What are two safety hazards when dealing with laser printers? (Choose two.)

• high voltage

• heavy metals

• hot components

• unwieldy card cages

• proprietary power bricks