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IT Essentials v7.0:
1. What is a good safety precaution to take when opening a computer case?Place tape over the case edges that are sharp.Remove the cover (or door) of the computer case before installing or removing parts.Remove the connections to the front panel before extending the case fully open.Ensure that any loose clothing such as a tie or shirt stay in constant contact with the case when handling internal components.
Explanation: Computer cases can easily be a hazard to technicians. Before working inside a computer, examine the case edges and put tape over any of the sharp edges to prevent physical harm. A case is opened, but seldom removed when installing or removing parts. Loose clothing should be secured before you work inside a computer.
2. What does the “A” in P-A-S-S remind a person to do while using a fire extinguisher?Aim the fire extinguisher at the flames.Aim the fire extinguisher at the base of the fire.Activate the fire extinguisher.Adjust the pressure.
Explanation: When using the P-A-S-S memory aid with a fire extinguisher, the “A” in P-A-S-S is for aiming at the base of the fire and not at the flames.
3. How is a power supply commonly attached to a tower case?restraining strapretention barscrewsstandoffs
Explanation: To install a power supply into a PC tower case, open the case, align the power supply with the case holes, and use screws to attach the power supply to the case.
4. A technician is replacing a power supply. Which two factors should the technician consider when obtaining the replacement part? (Choose two.)type of caseinput voltage level of 12 or 5 VDCnumber of internal fansoutput voltagewattage
Explanation: A technician should consider the following when choosing a power supply:Type of motherboardWattageNumber and type of connectorsType of caseThe computer input power level is either 120 or 240 VAC. Output voltages are standard 3.3, 5, and 12 VDC. A power supply normally has one fan and this is not a selectable option on a fan.
5. A technician is installing additional memory in a computer. How can the technician guarantee that the memory is correctly aligned?The label on the memory module should always face the CPU.A notch in the memory module should be aligned with a notch in the memory slot.The arrows on the memory module should be aligned with the arrows on the motherboard slot.Memory slots are color coded, with one end red and one end blue.
6. What is used to prevent the motherboard from touching metal portions of the computer case?an I/O shieldthermal compoundstandoffsZIF sockets
Explanation: Screws and standoffs that are non-metallic may be insulators and protect against grounding.
7. Which statement describes the purpose of an I/O connector plate?It makes the I/O ports of the motherboard available for connection in a variety of computer cases.It plugs into the motherboard and expands the number of available slots for adapter cards.It provides multiple connections for SATA hard drives to connect to the motherboard.It connects the PCIe adapter slots used for video directly to the CPU for faster processing.
Explanation: The I/O plate connects to the back of the case and has holes for each of the ports on the motherboard to push through, allowing the motherboard to be used in many different cases regardless of the number of ports on the board or their layout.
8. What are three important considerations when installing a CPU on a motherboard? (Choose three.)Antistatic precautions are taken.The CPU is correctly aligned and placed in the socket.The CPU contacts are first cleaned with isopropyl alcohol.The CPU heat sink and fan assembly are correctly installed.The CMOS EPROM battery is removed prior to installing the CPU.Maximum insertion force is applied to the load lever so the CPU is locked in place.
Explanation: The CPU is sensitive to static discharges. Its pins are very delicate and it works at high temperatures, so precautions must be taken. If the CPU has been used in another machine or if the fan is being replaced, you might need to remove the old thermal compound using isopropyl alcohol (not on the CPU contacts). The battery does not need to be removed from the motherboard during the CPU installation. This would cause the saved BIOS settings to be lost. Minimum force should be needed to lock the CPU load lever into place.
9. When a new PC is being built, which component has the most influence when selecting the case and power supply?video cardsound cardRAM modulemotherboardhard disk type
Explanation: The choice of motherboard determines the type of case and power supply. The form factor of a motherboard must match the type of case and power supply. RAM modules, video cards, and sound cards are installed on the motherboard. They must be compatible with the motherboard. A hard disk is attached to the case, but the dimensions of the drive bays are standardized.
10. Which two factors must be considered when replacing old RAM modules in a PC? (Choose two.)The new RAM must be compatible with BIOS or UEFI.The new RAM must be compatible with the motherboard. The speed of the new RAM must be supported by the chipset.The power supply must provide the voltage that is requred by the new RAM.The new RAM must match the old RAM in terms of capacity and speed.
Explanation: When the RAM on a motherboard is being replaced or upgraded, the new RAM module must be compatible with the current motherboard. In addition, the speed of the new RAM must be supported by the chipset.
11. Refer to the exhibit. In which section of the motherboard would a memory module be installed?
Explanation: Memory modules insert into memory expansion slots that have a retaining clip at each end of the slot.
12. Which type of motherboard expansion slot sends data one bit at a time over a serial bus?RAMPCIPCIePATA
Explanation: A PCIe expansion slot connects to a serial bus that sends data one bit at a time at a much faster rate than the older PCI slot that connects to a parallel bus.
13. Which PC motherboard bus is used to connect the CPU to RAM and other motherboard components?front-sidePCIPCIeSATA
Explanation: The front-side bus (FSB) is used to connect the CPU to RAM, expansion cards, and other motherboard components. The speed of this bus is relevant when selecting replacement motherboards and RAM.
14. Where is buffered memory commonly used?gaming laptopsgaming computersbusiness PCsserverstablets
Explanation: Buffered memory is used in computers that have a lot of RAM such as servers and high-end workstations. Buffered memory should be avoided in gaming, business, and home computers because it slows the memory speed.
15. A technician has been asked to upgrade a processor and needs to do some research. The computer is just a couple of years old. What are two types of processor packages that could be used inside the computer? (Choose two.)GDDRLGAPCIePGAISA
Explanation: Two architectures used with CPUs today are the pin grid array (PGA) and the land grid array (LGA). The PGA has pins on the bottom of the processor. The LGA has pins within the socket.
16. A student is looking to add memory in order to speed up a tower computer. Which type of memory module should the student be looking for?DIPDIMMSIMMSODIMM
Explanation: Motherboards in tower computers accept dual inline memory modules (DIMMs) in the memory expansion slots. A motherboard supports a particular type of DIMM such as a DDR3 or DDR4 module.
17. Which type of drive is typically installed in a 5.25 inch (13.34 cm) bay?hard driveoptical driveflash driveSSD
Explanation: Optical drives are installed in 5.25 inch (13.34 cm) drive bays that are accessed from the front of the case. Flash drives typically connect to USB ports. SSDs and hard drives typically install in a 3.5 inch (8.9 cm) drive bay or a 5.25 inch (13.34 cm) drive bay that is not accessed from the front of the case. If the drive is smaller than the bay, a tray may be purchased.
18. A technician has been asked to order a replacement internal SATA HDD. Between which two form factors will the technician have to choose? (Choose two.)2.25 inch (5.72 cm)2.5 inch (6.35 cm) 3.5 inch (8.89 cm)5.5 inch (13.97 cm)6.25 inch (15.88 cm)
Explanation: For tower computers, internal HDDs are available in the 3.5 and 2.5 inch (8.89 cm and 6.35 cm) form factors. SSDs tend to be the 2.5 inch form factor.
19. While shopping for a replacement motherboard, a customer decides to also purchase a new mechanical hard drive and asks the technical salesperson for advice. Which storage interface should the salesperson recommend for the motherboard and new drive?IDEEIDESATARAID 5
Explanation: Mechanical hard drives today use SATA. Legacy PATA drives used IDE and EIDE. RAID 5 is a drive redundancy technology.
20. Which type of motherboard expansion slot has four types ranging from x1 to x16 with each type having a different length of expansion slot?PCIeAGPSATAPCI
Explanation: The PCIe, or PCI Express, bus has four types of expansion slots with varying lengths: x1, x4, x8, and x16.
21. A technician is installing a new high-end video adapter card into an expansion slot on a motherboard. What may be needed to operate this video adapter card?PCI expansion slotPCIe x 8 expansion slotTwo 8-pin power connectors24-pin ATX power connector
Explanation: When a high performance video adapter card is used, multiple power connectors may be required. These connectors may each use a 6-pin or 8-pin power connector. Video adapter cards commonly use the PCIe X 16 slot. A 24-pin ATX power connector is used to provide power to the motherboard.
22. Refer to the exhibit. Which type of expansion slot is shown?
Explanation: The four expansion slots shown in the exhibit from left to right are the PCIe x1, PCI, PCIe x16, and PCIx1.
23. Refer to the exhibit. Which device is shown?
Explanation: A media reader can be an external USB-attached device or an internal device used to read or write to media cards.
24. When assembling a PC, how is pin 1 identified on the front panel cables so that it can be aligned properly with pin 1 on the motherboard panel connector?by a small arrow or notchby a plus signby a P1by a red cable
Explanation: Each cable that connects to the front panel connector on the motherboard is marked with a small arrow to identify which pin is pin 1 so that it can be aligned with pin 1 on the panel.
25. A technician is selecting a PC that will be used by an employee who wants to share a keyboard and mouse among three devices. What is a major consideration that needs to be taken into account?KVM switch
IT Essentials v6.0:
25. A new technician has joined the IT team and is about to service a heavy printer. What advice would you give this technician to avoid any injury when transporting the heavy printer to the service area?Bend your knees to use the strength in your legs to lift the printer.Avoid bending your knees when lifting the printer.Bend your back to pick the printer up.Use your arms and back to lift the printer.
26. How does an inline UPS protect computer equipment against electrical power brownouts and blackouts?by grounding excess electrical voltageby using a battery to supply a constant level of voltageby switching from main power to a standby power sourceby stopping the flow of voltage to the computer
27. Which circumstance increases the likelihood of ESD damage to a computer?working in low levels of humidityusing a magnetic screwdriver while working on a hard driveplugging a printer into an UPSself grounding against the computer case
28. Which condition refers to a reduced voltage level of AC power that lasts for an extended period of time?brownoutsagspikesurge
29. What are two significant sources of EMI? (Choose two.)infrared miceRAM moduleselectrical stormsLCD monitorspower lines
30. A technician is unpacking a new PCIe video adapter from an antistatic bag to install the card in a desktop computer. Which two measures should the technician use to protect the card and other computer components? (Choose two.)Use a grounded mat on the workbench.Use a correctly connected antistatic wrist strap.Shield the card and computer from sources of EMI.Ensure that the workplace has a low humidity environment.Connect the computer to a UPS while installing the card.
31. How should a technician dispose of an empty inkjet printer cartridge?Refill it.Throw it away.Follow local regulations for disposal.Give it back to the customer.
32. What makes CRT monitor disposal dangerous for a technician who is handling the disposal?potential breathing hazardspotential explosive materialspotential residual high voltagepotential health-damaging chemicals
33. A technician is troubleshooting connectivity issues to a PC and needs to verify which cable is plugged into the correct port of the patch panel. What tool should the technician use?multimetertoner probepunch downcrimper
34. Which tool is designed to loosen or tighten crosshead screws?phillips screwdriverhex driverflat head screwdrivertorx driver
35. What tool would a technician use to remove a slotted screw?flat head screwdriverhex driverneedle-nosed pliersPhillips head screwdriverTorx screwdriver
36. Which tool in Windows OS gives a technician access to initialize disks and create partitions?Optimize DrivesDisk CleanupDisk ManagementFormatScandisk
37. Which Windows OS tool scans the critical files of the operating system and replaces any files that have been corrupted?ChkdskDefragDisk CleanupDisk ManagementScan SystemSystem File Checker
38. Which tool should be used if a user needs to optimize space on a hard drive?Optimize DrivesDisk ManagementFdiskFormat
39. Why is documentation of all services and repairs an important organizational tool for a technician?It increases the cost of services and repairs.It allows the public sharing of information on the Internet.It reduces the technical skills required of new technicians.It provides reference material for similar problems when they are encountered in the future.
40. Which tool could potentially cause data loss on hard disk or floppy drives?a magnetic screwdrivercompressed aira lead pencila computer vacuum cleaner
41. Why should an antistatic wrist strap be worn when working on electronic equipment?to prevent interference from clothing and loose jewelryto equalize the electrical charge between a person and the equipmentto prevent clothing made of silk, polyester, or wool from generating a static chargeto draw static electricity away from a component and transfer it safely from equipment to a grounding point
42. Which precaution should be taken when working inside computer systems?Avoid using magnetized tools.Leave the power cord attached to an outlet for grounding.Wear ESD protection to repair monitors in humid environments.Avoid using ESD wrist straps and ESD mats simultaneously.
43. Which cleaning solution is recommended to clean the contacts of computer components?rubbing alcoholisopropyl alcoholglass cleaner with ammoniawater that is mixed with a small amount of dishwashing liquid
44. Why should a pencil never be used as a tool when working inside a computer?Pencil lead is corrosive.Pencil lead is conductive.
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A pencil can hold a static charge.The lead in a pencil can induce current.
45. A technician suspects that a power supply is faulty. How can it be checked?by checking the temperature of the power supplyby using a multimeterby taking apart the power supplyby powering up the PC after disconnecting each connector in turn
46. Match the steps of fire extinguisher operation to the order in which they should be completed. (Not all options are used.)