IT ESSENTIALS CHAPTERS 1 - 4 EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026

IT ESSENTIALS CHAPTERS 1 - 4 EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026 Where is buffered memory commonly used? - Answers servers What is a good safety precaution to take when opening a computer case? - Answers place tape over the case edges that are sharp A technician is replacing a power supply. Which two factors should the technician consider when obtaining the replacement part? - Answers - type of case - wattage (power output) Which type of motherboard expansion slot has four types ranging from x1 to x16 with each type having a different length of expansion slot? - Answers PCIe When a new PC is being built, which component has the most influence when selecting the case and power supply? - Answers motherboard 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? - Answers two 8-pin power connectors 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? - Answers - LGA - PGA Which two factors must be considered when replacing old RAM modules in a PC? - Answers - The new RAM must be compatible with the motherboard - The speed of the new RAM must be supported by the chipset What does the "A" in P-A-S-S remind a person to do while using a fire extinguisher? - Answers AIM the fire extinguisher at the base of the fire 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? - Answers DIMM Which PC motherboard bus is used to connect the CPU to RAM and other motherboard components? - Answers front-side Which type of drive is typically installed in a 5.25 inch (13.34 cm) bay? - Answers optical drive How is a power supply commonly attached to a tower case? - Answers screws 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? - Answers SATA Which type of motherboard expansion slot sends data one bit at a time over a serial bus? - Answers PCIe A technician has been asked to order a replacement internal SATA HDD. Between which two form factors will the technician have to choose? - Answers - 2.5 inch - 3.5 inch What are three important considerations when installing a CPU on a motherboard? - Answers - antistatic precautions are taken - the CPU is correctly aligned and placed in the socket - the CPU heatsink and fan assembly are correctly installed What is the purpose of LoJack? - Answers it allows the owner of a device to remotely locate, lock, or delete all files from the device Which two components are commonly replaced when a computer system with a newer motherboard is being upgraded? - Answers - CPU - RAM A technician has assembled a new computer and must now configure the BIOS. At which point must a key be pressed to start the BIOS setup program? - Answers during the POST How does an inline UPS protect computer equipment against electrical power brownouts and blackouts? - Answers by using a battery to supply a constant level of voltage What is indicated by the contrast ratio of a monitor? - Answers the difference in the intensity of light between the brightest white and darkest black that can be displayed What are two reasons for installing a second hard disk drive inside an existing computer? - Answers - to support a RAID array - to store the system swap file what provides fault tolerance for up to two failed drives? - Answers double parity what stores the same data on multiple drives simultaneously? - Answers mirroring what enables data to be distributed across multiple drives? - Answers striping what provides basic error checking and fault tolerance by storing checksums separately from data? - Answers parity Which is a BIOS security feature that can prevent data from being read from a hard drive even if the hard drive is moved to another computer? - Answers drive encryption A technician has just finished assembling a new computer. When the computer is powered up for the first time, the POST discovers a problem. How does the POST indicate the error? - Answers it issues a short number of beeps What is a function of the BIOS? - Answers performs a check on all internal components What electrical unit refers to the number of electrons moving through a circuit per second? - Answers current What makes CRT monitor disposal dangerous for a technician who is handling the disposal? - Answers potential residual high voltage How should a technician dispose of an empty inkjet printer cartridge? - Answers follow local regulations for disposal What characteristic of electricity is expressed in watts? - Answers the work required to move electrons through a circuit multiplied by the number of electrons flowing through a circuit per second Which statement describes the capability of an HDMI version 1.4 type A port? - Answers it can change a monitor's refresh rate to match the source device output rate What data is stored in the CMOS memory chip? - Answers BIOS settings What is one purpose of adjusting the clock speed within the BIOS configuration settings? - Answers to allow the computer to run slower and cooler Which condition refers to a reduced voltage level of AC power that lasts for an extended period of time? - Answers brownout Which type of interface was originally developed for high-definition televisions and is also popular to use with computers to connect audio and video devices? - Answers HDMI Which security feature in modern CPUs protects memory areas that contain part of the operating system from malware attacks? - Answers execute disable bit A data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 10? - Answers 4 A technician has been asked to configure several computers with RAID. The customer wants data to be stored on three drives and protection for one drive failure. Which RAID should the technician install? - Answers RAID 5 Which characteristic describes EPROM - Answers a chip that is nonvolatile and can be erased by exposing it to strong ultraviolet light A customer comes into a computer parts and service store. The customer is looking for a device to provide secure access to the central server room using a retinal scan. What device should the store owner recommend to accomplish the required task? - Answers biometric scanner What is an active cooling solution for a PC? - Answers adding an additional case fan What three voltages are commonly provided by the power supply to the various components inside the computer? - Answers - 3.3 volts - 5 volts - 12 volts Which two devices are considered input devices? - Answers - digital camera - biometric authentication device Which tool can protect computer components from the effects of ESD? - Answers antistatic wrist strap Which adapter would a technician install in a desktop computer to enable a video signal to be recorded from a video recorder to the computer hard drive? - Answers video capture card Which two activities are normally controlled by the Northbridge part of the chipset? - Answers - access to the RAM - access to the video card A customer has a computer for a home business, but wants to have another computer as a web server. What would be the best solution for the customer to share the monitor, mouse, and keyboard between the two computers? - Answers KVM switch What is the fastest type of memory technology? - Answers SRAM (Static Random-Access Memory)