25B IT Essentials Practice Test

These questions are part of the practice quiz. Start practicing

• Which statement accurately describes ROM memory?
• How can you determine if an installed application is causing system performance issues?
• What device would you use to connect a computer to a wired data network?
• Which physical device can be used to improve Wi-Fi signal strength?
• Which two storage devices use a magnetic medium for storing data?
• What is the purpose of an HTTP cookie?
• Which two components usually interface directly with the Southbridge chipset on the motherboard?
• What is the minimum voltage of static electricity that a person can feel?
• What is one advantage of GDDR RAM compared to standard DRAM?
• What is the purpose of an IP address?
• What is the role of cache memory in a computer system?
• What is the function of a proxy server?
• What type of current is supplied by wall outlets?
• Why is it necessary to ground both computers and network devices?
• Which operating system is known for its use in servers and networks?
• What device should be recommended for a person with accessibility issues to input instructions into a laptop using a pen?
• What type of device outputs audio from a computer?
• What is a characteristic of SRAM in a PC?
• What device allows users to tap and pay for their purchases securely?
• What does ROM stand for in computer memory?
• What is the primary reason for updating software regularly?
• What could be a possible solution to high hard drive failure rates due to vibrations?
• What is the updated version of the AT power supply?
• Which of the following is an example of an input device?
• Which file system is commonly used by Windows operating systems?
• What does the acronym SSD stand for?
• From which type of memory does the CPU load information for processing?
• What device should be recommended for displaying a promotional presentation to a large audience?
• What is the purpose of a surge protector?
• Which Windows command can be used to check disk integrity?
• Which term defines a memory that retains data without power?
• What is used as permanent storage for data?
• Which characteristic describes ECC (Error-Correcting Code) memory?
• In networking, what does NAT stand for?
• Which networking device is responsible for forwarding data packets between networks?
• What type of adapter is used to connect a computer to a network?
• Which characteristic describes PROM (programmable read-only memory)?
• What is the default subnet mask for a Class B IP address?
• What is the maximum length for a USB 2.0 cable?
• What is the role of a video adapter in a computer?
• Which device is responsible for connecting different networks?
• Which component is essential for connecting a computer to the internet?
• What is a primary use for GDDR Synchronous Dynamic RAM?
• Why might someone choose to use a KVM switch in a home office setup?
• Which component of a computer is primarily responsible for executing instructions?
• Which type of RAM is specifically designed for high-performance graphics applications?
• Which of the following is a common output device?
• What technology allows for the virtualization of hardware resources?
• Which cable type is used for connecting to a network using Ethernet?
• What is a characteristic of GDDR Synchronous Dynamic RAM?
• Which command is used to check network connectivity in Windows?
• What component would be most helpful for ensuring safe handling of electronic components?
• Which of the following devices is NOT typically considered an input device?
• What does the acronym VPN stand for?
• What does the acronym DHCP stand for?
• Which service translates domain names into IP addresses?
• Which device is typically used to connect a computer to the internet?
• Which characteristic describes GDDR SDRAM?
• Which statement accurately describes the use of an anti-static wrist strap?
• Speakers, projectors, and printers are classified as which type of devices?
• What is recommended as an active cooling solution for a PC?
• In the context of cybersecurity, what does the term 'malware' refer to?
• What function does the operating system perform during boot-up?
• Which of the following best describes the function of a projector?
• What does the acronym CPU stand for?
• Which components can be shared using a KVM switch?
• What does the acronym HTTPS stand for?
• Which of the following is a method to secure wireless networks?
• Which device should be recommended to manually input text for a networking textbook?
• Which part of the computer controls the communications between the CPU and other components on the motherboard?
• Which characteristic describes a SIMM?
• In a client-server model, what role does the server play?
• Which characteristic differentiates GDDR RAM from standard RAM?
• Which device is recommended for scanning old family photos into a laptop?
• What does a firewall primarily protect a network from?
• Which chipset provides CPU access to RAM, video card, and PCIe slots?
• Biometric authentication devices and digital cameras are categorized as what type of devices?
• When is GDDR RAM most commonly used in computing?
• What function does a video capture card perform?
• What is a common symptom of a failing hard disk drive?
• What unit of measurement is used to indicate the hard drive speed?
• Which of the following are data storage devices?
• What is an example of a file system used by UNIX-like operating systems?
• Which characteristic describes EPROM?
• Which device converts digital signals into analog for transmission over telephone lines?
• Which statement is true regarding GDDR Synchronous Dynamic RAM?
• What three voltages are commonly provided by the power supply to various components inside the computer?
• Which device allows sharing keyboard, video, and mouse between multiple computers?
• Which device would be used on a laptop to verify the identity of a user?
• Which Windows tool is used for managing disk partitions?
• What is the purpose of an antistatic wrist strap while working on computers?
• What happens if a person experiences electrostatic discharge?
• What is the purpose of a network interface adapter with an RJ-45 port?
• What type of memory can be electrically erased and reprogrammed?
• What does RAID stand for in data storage technology?
• Computer cases are commonly known by which of the following terms?
• What is the primary purpose of computer power supplies?
• Which device should be recommended for secure access to a central server room using a retinal scan?
• What does a KVM switch enable a user to do?
• Which of the following best describes an HDMI interface?
• What device uses a magnetic read/write head to store data?
• What type of network topology connects all devices to a single central cable?
• Which of the following is a key advantage of ECC memory?
• What type of power supply was originally designed for network servers?
• Which of the following is a characteristic of SSDs compared to HDDs?
• What command can be used to display the MAC address of a device in Windows?
• SRAM takes a small, but constant source of power to function and is used for what purpose?
• Which component is primarily involved in graphics rendering?
• What type of memory is best suited for a thick client workstation to provide error protection?
• What voltage level is typically damaging to computer components?
• What is commonly used to enhance temporary data storage during processing tasks?
• What is the purpose of the Control Panel in Windows?
• What type of applications primarily benefit from GDDR RAM?
• What is a key benefit of using a Virtual Machine?
• What is the primary function of an operating system?
• What does the acronym RAID stand for in data storage?
• Which type of memory is primarily used as cache memory?
• What does the Southbridge chipset allow the CPU to communicate with?
• What component is associated with the permanent storage of the operating system?
• Which storage device is least likely to be used for quick data access?
• Which type of drive offers faster read/write speeds compared to traditional hard drives?
• Which of the following is a commonly used cloud storage service?
• Which power supply is most common on the market today?
• Which device connects multiple computers to a single network?
• What is the approximate voltage that can cause harm to an individual or equipment?
• What type of storage device uses flash memory?
• What type of attack involves overwhelming a system with traffic?
• In virtual memory, what is the purpose of the page file?
• For secure access to the main doors of a company using an ID card, which device should be recommended?
• Which type of memory is often faster but more expensive than traditional DRAM?
• Which two activities are normally controlled by the Northbridge part of the chipset?
• How can you protect a computer from unauthorized access?
• Which type of power supply voltage supports high-performance graphics cards?
• What is the voltage delivered for disk drive motors in a computer power supply?
• What is the purpose of a firewall?
• What tool can protect computer components from ESD?
• GDDR Synchronous Dynamic RAM is designed for use with which type of processing?
• Which Windows feature allows users to restore the system to an earlier point in time?
• Which component of a computer is responsible for executing instructions?
• What voltage is typically delivered by power supplies for CPUs?
• What is the function of antivirus software?
• What is the difference between a static and dynamic IP address?
• Which device should be recommended for training pilots in a computer simulation environment?
• What type of threat does a Trojan horse represent?
• What should a technician check to determine if an additional hard drive can be added to an older computer?
• What is typically stored in the RAM of a computer?
• Which of the following is NOT a data storage device?
• What does the acronym WAP stand for in networking?
• Which protocol is used for secure data transmission over the internet?
• What device would you typically use to protect sensitive computer components from ESD?
• Which of the following is NOT a reason to use GDDR RAM?
• What does a blue screen error indicate in Windows?
• Which characteristic describes a DIP (Dual In-Line Package)?
• What type of cables are used for fiber optic connections?
• What are the two main types of hardware in a computer?
• What encryption method is commonly used in wireless networks?
• What voltage is typically delivered for motherboard components from power supplies?
• What does the acronym BIOS stand for?
• When selecting a power supply, which specification is critical to match with the motherboard to ensure proper connectivity?
• What is the primary purpose of device drivers?
• Which component is essential for a computer’s startup process?
• Which Windows command is used to clear the DNS cache?
• Which characteristic describes ROM?
• What type of magnetic storage is most often used for backup or archive data?
• Which characteristic describes EPROM (erasable programmable read-only memory)?
• What is the primary purpose of the BIOS?
• What component connects to the motherboard through a 24-pin connector?
• What is the primary benefit of using a KVM switch for a home business setup?
• Which two devices are examples of input devices?
• What is the primary benefit of regular data backups?
• What is the purpose of a TV tuner card?
• What does the acronym URL stand for?
• Which adapter is required to record a video signal from a video recorder to a computer's hard drive?
• In the context of IT, what does the term 'malware' refer to?
• What type of memory is used by the CPU for processing data and programs?
• PATA supports how many devices per cable?
• Which type of RAM is characterized by processing massive amounts of data at high speeds?
• What is the fastest type of memory technology?
• Which characteristic describes DDR3 SDRAM (Synchronous dynamic random-access memory)?
• What is the function of a firewall in a network?
• Which of the following devices can both input and output data?
• What technology allows multiple devices to connect to a network wirelessly?
• Which of the following is a characteristic of data storage devices like SSDs?
• Which of the following is a commonly used IPv4 address range for private networks?
• Which protocol is commonly used for secure online transactions?
• Which protocol is used to send emails securely over the internet?
• Which device should be recommended to help repair airplane manuals interactively?
• Which of the following best describes a DDoS attack?
• Which type of power supply was originally used in legacy computer systems?
• Which type of interface was originally developed for high-definition televisions?
• What does ESD stand for in an electrical context?
• What does a network interface card enable in a computer?
• What is the main function of the operating system?
• What does a device with a DIP form factor typically connect to?
• What is the primary role of antivirus software?
• What is the primary function of the GPU?
• In what scenario would a KVM switch be beneficial?
• A technician needs to determine if an additional hard drive can be added to an older computer. What should they look for in the computer?
• At what voltage does an electrical discharge become painful or make a noise?
• Which protocol is primarily used for email transmission?
• Which of the following best describes a KVM switch?
• What is a common use for a firewall?
• Which electrical characteristic must be present in equipment for safety?
• Which of the following is a valid reason to use a UPS (Uninterruptible Power Supply)?
• What does grounding electrical equipment prevent?
• What is a major benefit of using cloud computing?
• Which type of malware disguises itself as legitimate software?
• What is a common use for a video capture card?
• What is the purpose of system patches?