50 comptia a+ practice test Practice Questions: Question Bank 2025

A technician is installing a new laptop hard drive that uses a connector which is 7mm wide and supports hot-swapping. Which interface is being used?

A user reports that their smartphone battery drains quickly even when not in use. After checking, the technician notices multiple apps running in the background and the screen brightness is set to maximum. What should the technician recommend FIRST?

A network administrator needs to assign IP addresses automatically to devices on the network while also providing them with the default gateway and DNS server information. Which service should be configured?

A small office needs to share a single color laser printer among 10 workstations. The printer has USB, Ethernet, and Wi-Fi connectivity options. Which connection method provides the BEST solution for multiple users?

A technician is troubleshooting a computer that displays a 'No Boot Device Found' error. The technician verifies the hard drive is detected in BIOS but the system still won't boot. What is the MOST likely cause?

An organization wants to implement a cloud solution where they maintain complete control over the infrastructure but want the scalability benefits of cloud computing. Which cloud deployment model should they choose?

A user's tablet is experiencing extremely slow performance and random app crashes. The technician checks and finds the storage is 98% full. What should the technician do FIRST to resolve this issue?

A technician needs to configure a wireless router for a small business. The business requires the strongest security possible for their wireless network. Which combination of settings should the technician implement?

A company is experiencing intermittent network connectivity issues. Users report that connections drop randomly throughout the day. A technician uses a cable tester and finds that several Ethernet cables have only 4 of 8 wires properly connected. The network uses Gigabit Ethernet switches. What is the impact of this wiring issue?

A technician is setting up multiple virtual machines on a single physical server. Each VM needs to communicate with the others while remaining isolated from the external network. The VMs also need to be able to migrate to other physical hosts without reconfiguration. Which virtual networking configuration should be implemented?

A technician is setting up a new wireless router for a small office. The office manager wants to ensure that only authorized devices can connect to the network. Which security feature should the technician implement to restrict access based on device hardware addresses?

A user reports that their laptop screen is very dim and difficult to read, even though the brightness settings appear to be at maximum. The display works normally when connected to an external monitor. What is the MOST likely cause of this issue?

A company wants to allow employees to access their work desktops remotely from home using their personal devices. The IT department needs a solution that streams the desktop environment from the server without storing data locally on personal devices. Which technology should they implement?

A technician needs to replace a failed hard drive in a desktop computer. The existing drive uses a 15-pin power connector and a 7-pin data connector. What type of drive interface is being used?

A user's smartphone battery drains rapidly and the device becomes very hot during normal use. The user recently installed several new applications. What should a technician recommend as the FIRST troubleshooting step?

A network administrator notices that several computers on the network are receiving IP addresses in the 169.254.x.x range. Users on these computers cannot access network resources. What is the MOST likely cause of this issue?

A technician is troubleshooting a computer that powers on but displays no video. The motherboard has integrated graphics, but a dedicated graphics card is installed in a PCIe slot. The monitor is confirmed working. What should the technician try FIRST?

A company is implementing a cloud solution where they want to maintain complete control over the operating system, middleware, and runtime environment, but let the provider manage the underlying hardware and networking infrastructure. Which cloud service model fits this requirement?

A technician needs to configure a mobile device to synchronize email, contacts, and calendar with a corporate Exchange server. The device should receive emails in real-time as they arrive. Which protocol and port combination should be configured?

A gaming computer frequently crashes during graphics-intensive games but runs normally during basic tasks. The crashes occur after 15-20 minutes of gaming. Temperatures are monitored and within normal ranges. What is the MOST likely cause?

A user reports that their laptop screen appears very dim even though the brightness setting is at maximum. The image is still visible when looked at closely. What is the MOST likely cause of this issue?

A technician needs to configure a SOHO router to allow a gaming console to receive incoming connections on specific ports. Which feature should the technician configure?

A company is deploying virtual machines for development environments. The VMs need to communicate with each other but should be isolated from the production network and the internet. Which virtual networking mode should be configured?

A user's smartphone battery drains rapidly and the device becomes hot during normal use. After checking, the technician notices multiple apps running in the background. What should the technician do FIRST?

A technician is troubleshooting a desktop computer that powers on but displays nothing on the monitor. The technician hears a series of beeps: one long beep followed by three short beeps. What does this MOST likely indicate?

A small business needs to implement a cloud solution where they maintain complete control over the infrastructure but want it hosted offsite by a third party. Which cloud deployment model BEST fits this requirement?

A technician is installing RAM in a workstation and notices that the memory modules have different numbers of pins. The motherboard has four slots with two different colors. What type of memory configuration does this motherboard support?

A user cannot connect to a wireless network. The technician verifies that the wireless adapter is enabled and other users can connect to the same network. The user's laptop shows the network but displays "Can't connect to this network." What should the technician check NEXT?

A technician needs to configure a network printer so that it always receives the same IP address from the DHCP server. The printer's MAC address is known. What is the BEST solution?

A technician is diagnosing a workstation that intermittently freezes and displays artifacts on the screen. The system logs show the GPU temperature reaching 95°C under load. What should the technician do to resolve this issue?

A technician is troubleshooting a laser printer that is producing pages with a vertical black line running down the entire length of each printed page. What is the MOST likely cause of this issue?

A user reports that their smartphone battery drains rapidly even when not actively using apps. Which of the following should a technician recommend FIRST to help identify the cause?

An organization wants to provide employees with access to applications and desktops from any location using thin clients. The IT department wants to host all computing resources in their datacenter. Which solution would BEST meet these requirements?

A technician needs to configure a SOHO wireless router for a small office. The business owner wants to ensure that only approved devices can connect to the network. Which security measure would BEST accomplish this requirement?

A desktop computer powers on but displays no video output. The technician hears one long beep followed by two short beeps during POST. What does this MOST likely indicate?

A technician is configuring email on a user's mobile device. The user wants to ensure that emails remain on the server and are synchronized across multiple devices. Which protocol should the technician configure?

A company is experiencing intermittent network connectivity issues. A technician discovers that the network cable run between two switches exceeds the maximum recommended distance. What is the maximum cable length for 1000BASE-T Ethernet over copper?

A user's tablet will not charge when connected to the charging cable. The technician confirms the cable and charger work with other devices. What should the technician check NEXT?

A datacenter manager needs to implement a backup solution that creates a full backup on Sunday and only backs up data that has changed since the last full backup on each subsequent day. Which backup strategy is being described?

A company wants to deploy virtual machines with different operating systems on a single physical server to maximize hardware utilization. Each VM needs to run independently with isolated resources. What component is required to make this possible?

A technician is troubleshooting a laptop that powers on but displays nothing on the screen. The technician shines a flashlight on the screen and can barely see the desktop image. What is the MOST likely cause of this issue?

A user reports that their smartphone battery drains quickly and the device feels hot to the touch. After checking, the technician notices multiple apps running in the background and the screen brightness is set to maximum. Which of the following actions should the technician take FIRST?

A company is implementing a virtualization solution and needs to run multiple operating systems on a single physical server. The administrator wants to ensure each virtual machine has isolated resources and can run different operating systems simultaneously. Which component is essential for this implementation?

A network administrator is configuring a SOHO router and needs to assign IP addresses automatically to devices on the network while reserving specific IP addresses for printers and servers. Which TWO services should be configured on the router to accomplish this?

A technician is installing a new M.2 SSD into a desktop computer. The motherboard has two M.2 slots: one labeled as supporting both SATA and NVMe, and another supporting only SATA. The technician has an NVMe M.2 drive. After installation in the first slot, the drive is not detected in BIOS. What should the technician check FIRST?

A user's laptop is experiencing intermittent wireless connectivity issues in a conference room, but works fine everywhere else in the office. Other users in the conference room are not experiencing issues. The technician verifies the laptop can see the wireless network with full signal strength. What is the MOST likely cause?

An organization wants to implement a cloud solution where they maintain complete control over the infrastructure and security, but want the scalability benefits of cloud computing. The data must remain on-premises due to regulatory requirements. Which cloud deployment model should they implement?

A technician is configuring a new workstation that will be used for CAD design work. The application requires high-performance graphics rendering and precise color accuracy. The workstation has a dedicated GPU with multiple display outputs: DisplayPort, HDMI, and DVI-D. The monitor supports all three connection types. Which connection should the technician use for optimal performance?

A company's file server experiences a complete hard drive failure. The server was configured with RAID 5 using four drives. After replacing the failed drive, the RAID array begins rebuilding. During the rebuild process, a second drive fails. What is the outcome and what RAID level would have prevented complete data loss in this scenario?

A technician is troubleshooting a desktop computer that randomly shuts down during operation without warning. The shutdowns occur more frequently when running resource-intensive applications. The technician has verified that the CPU temperatures are within normal range and the system event logs show Kernel-Power events. What is the MOST likely cause and solution?