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CompTIA A+ Core 1 (220-1201) practice questions

222 free questions with answers and explanations.

Practice test
  1. 151.A technician is pairing a Bluetooth headset with a smartphone and needs to explain the expected wireless range to the user. Which of the following is the TYPICAL effective range for most consumer Bluetooth Class 2 devices?Mobile Devices
  2. 152.A technician needs to remotely troubleshoot an older network switch that only supports an unencrypted command-line management protocol. Which port is used by this legacy remote access protocol?Networking
  3. 153.A technician is terminating a fiber optic patch cable and needs to select a connector type that uses a small push-pull latching mechanism, allowing higher port density on a patch panel compared to older connector types. Which of the following connector types should the technician choose?Networking
  4. 154.A technician is replacing a laptop keyboard and discovers that the keyboard is fused to the palm rest as a single field-replaceable unit (FRU). Which of the following best describes this type of component?Mobile Devices
  5. 155.A company migrates its web server to a new hosting provider and receives a new IP address. The administrator wants users to keep using the friendly name 'www.company.com' and also wants 'shop.company.com' to point to the same location without maintaining two separate IP-mapped records. Which DNS record type should the administrator use for 'shop.company.com' to alias it to 'www.company.com'?Networking
  6. 156.A company runs sensitive financial workloads on its own privately owned and managed cloud infrastructure. For a separate, non-sensitive analytics workload, the company wants to temporarily use a public cloud provider's compute resources only during periods of peak demand, while keeping the private and public environments interconnected. Which cloud deployment model does this scenario describe?Virtualization and Cloud Computing
  7. 157.A home user wants a single gaming console to receive all inbound traffic from the internet without configuring individual port forwarding rules, while keeping the rest of the network protected by the firewall. Which of the following SOHO router features should be configured?Networking
  8. 158.A technician replaces a failing hard drive, reinstalls the operating system, and confirms the user can log in and access all required applications. According to the CompTIA troubleshooting methodology, what should the technician do NEXT before closing the ticket?Hardware and Network Troubleshooting
  9. 159.A technician is troubleshooting a client's desktop that intermittently loses network connectivity. The client reports that the issue seems to occur more frequently during peak network usage hours. The technician suspects a duplex mismatch. Which of the following tools would BEST confirm this suspicion?Hardware and Network Troubleshooting
  10. 160.A client wants a new laptop display with vibrant colors and true blacks for photo editing, and is willing to accept a higher risk of image burn-in over time. Which display technology should the technician recommend?Mobile Devices
  11. 161.A technician installs a new NIC driver and wants to verify that the local TCP/IP stack is functioning correctly before testing connectivity to the network. Which IP address should the technician ping to test this?Networking
  12. 162.A technician installs a new M.2 SSD into a laptop, but the system does not detect the drive. Upon inspection, the SSD has a single notch positioned for an 'M' key, while the motherboard's M.2 slot is keyed for 'B+M'. What is the issue?Hardware
  13. 163.A SOHO router is configured so that all devices on the internal LAN use private IP addresses in the 192.168.1.0/24 range, but they can still browse the internet using a single public IP address assigned by the ISP. What technology allows multiple internal devices to share one public IP address?Networking
  14. 164.A technician is installing a new hard drive into a desktop computer. The drive has a typical 15-pin power connector. Which type of power connector from the power supply unit (PSU) should the technician use to power this drive?Hardware
  15. 165.A user reports that their desktop computer occasionally fails to power on completely. When the power button is pressed, the fans briefly spin, and some lights flash, but then everything shuts down. This happens inconsistently. Which component is the MOST likely cause?Hardware and Network Troubleshooting
  16. 166.A technician attempts to install a 64-bit virtual machine using Type 2 hypervisor software on a workstation, but the software reports that hardware virtualization support is unavailable even though the CPU manufacturer's specifications confirm it is supported. What should the technician do first?Virtualization and Cloud Computing
  17. 167.A technician is installing a new 2.5-inch Solid State Drive (SSD) into a desktop computer. Which type of data cable is required to connect this drive to the motherboard?Hardware
  18. 168.A client notices that their inkjet printer is producing pages with streaks and missing colors, even after replacing the ink cartridges. The technician performs a nozzle check, which confirms several clogged nozzles. Which of the following maintenance steps should the technician perform NEXT to resolve this issue?Hardware
  19. 169.A network administrator wants to monitor the health and performance of multiple SOHO routers and switches from a centralized management station using a standardized query protocol. Which port should be allowed through the firewall for this traffic?Networking
  20. 170.A technician is troubleshooting a desktop computer that experiences random reboots and blue screen errors, particularly when under heavy load such as gaming or video editing. The technician has already verified that the system is not overheating and has updated all drivers. What is the MOST likely hardware component to suspect next?Hardware and Network Troubleshooting
  21. 171.A technician is installing a new dual-band wireless access point (WAP) that supports both 2.4 GHz and 5 GHz frequencies. Which of the following statements accurately describes a characteristic of the 5 GHz band compared to the 2.4 GHz band?Hardware
  22. 172.A client reports that their desktop computer occasionally freezes completely, requiring a hard reboot. The event viewer shows no critical errors related to software, but the system's fans seem to be running at unusually high speeds just before a freeze. After inspecting the computer, the technician notices that the CPU heatsink is loose and covered in a thick layer of dust. Which of the following is the MOST likely cause of the system freezes?Hardware
  23. 173.A technician is installing a new 2.5-inch SATA SSD into a desktop computer. Which type of power connector is required to provide power to this drive?Hardware
  24. 174.A technician configures a device with only an automatically assigned IPv6 address that begins with fe80::. The device can communicate with other hosts on the same local network segment but not with hosts on other networks or the internet. Which of the following BEST explains this behavior?Networking
  25. 175.A technician is installing a new CPU on a motherboard that uses a Land Grid Array (LGA) socket. After placing the CPU into the socket, the technician attempts to close the retention lever but finds it requires significant force and the CPU appears slightly raised. What is the most likely cause of this issue?Hardware
  26. 176.A technician is installing a new CPU into a motherboard. After placing the CPU into the socket, what is the next critical step to secure it and ensure proper electrical contact?Hardware
  27. 177.A technician is installing a new graphics card into a desktop computer. The graphics card has two 8-pin power connectors. The power supply unit (PSU) only has 6-pin PCIe power cables. What is the MOST appropriate solution for the technician?Hardware
  28. 178.A technician is troubleshooting a desktop computer that powers on, but the monitor remains black, and the system emits a series of beeps. Which component is most likely indicating a problem?Hardware
  29. 179.A photographer wants a laptop display with wide viewing angles and accurate color reproduction for editing photos in different lighting conditions. Which display technology should the technician recommend?Mobile Devices
  30. 180.A technician configures a smartphone's mobile hotspot with a 5 GB monthly data cap. During one session, the user streams video averaging 750 MB per hour for 4 hours and downloads a 1.2 GB software update. How much data remains under the cap after these activities?Mobile Devices
  31. 181.A technician is troubleshooting a desktop computer that experiences random reboots and occasionally displays a 'blue screen of death' (BSOD). The user reports that these issues started after they installed new high-performance RAM modules. The technician has already verified the RAM is seated correctly. What should the technician check NEXT?Hardware and Network Troubleshooting
  32. 182.A technician is troubleshooting a desktop computer that fails to boot. When powered on, the system lights up, fans spin, but there is no video output, and no POST beeps are heard. The technician has already reseated the RAM and video card. Which of the following components is MOST likely causing the issue?Hardware and Network Troubleshooting
  33. 183.A user reports that when they try to use the webcam on their laptop, it appears distorted, pixelated, and sometimes freezes. The problem occurs with multiple applications and after restarting the laptop. Which of the following is the MOST likely cause?Hardware and Network Troubleshooting
  34. 184.A small business subscribes to a fully hosted email and office productivity suite. The vendor manages all servers, storage, and application updates; users simply log in through a browser. Which cloud service model does this describe?Virtualization and Cloud Computing
  35. 185.A technician is building a high-performance workstation for video editing. The client specifies that the system should support a maximum of 128GB of RAM and use a CPU with 16 cores. Which motherboard form factor would be most appropriate for this build?Hardware
  36. 186.A technician is pairing a wireless keyboard with a tablet for the first time. After selecting the device from the Bluetooth menu, the tablet displays a code that must be entered on the keyboard. What is this security step called?Mobile Devices
  37. 187.A technician is troubleshooting a server with a RAID 5 array configured with five 2TB drives. The server is experiencing degraded performance, and the RAID controller reports that one drive has failed and another drive is showing predictive failure warnings. The technician needs to restore optimal performance and fault tolerance with minimal downtime. Which of the following actions should the technician take FIRST?Hardware and Network Troubleshooting
  38. 188.A development team wants to build and deploy custom applications quickly without managing servers, operating system patching, or network configuration, but they still need access to a runtime environment, libraries, and a managed database service. Which cloud model should the team choose?Virtualization and Cloud Computing
  39. 189.A technician is designing wireless coverage for a large warehouse with thick metal shelving. The technician must choose between deploying access points using the 2.4GHz band versus the 5GHz band. Which statement correctly describes the trade-off between these two frequency bands?Networking
  40. 190.A user reports that a laptop's touchpad no longer responds to any input, though the keyboard and screen work normally. A technician opens the laptop and finds the touchpad ribbon cable is disconnected from the motherboard. Which of the following is the MOST likely next step to resolve the issue?Mobile Devices
  41. 191.A technician needs to install a new storage device that communicates directly over the PCIe bus rather than through a SATA controller, providing the fastest possible read/write speeds. Which type of drive should the technician install?Hardware
  42. 192.A technician is configuring a custom PC build for a video editor. The motherboard has four RAM slots and supports dual-channel memory. To maximize memory performance and capacity, which of the following RAM configurations is best suited for this build?Hardware
  43. 193.A technician is installing a fiber optic backbone link between two buildings and must terminate the cable with a connector that uses a bayonet-style twist-and-lock mechanism. Which connector type should the technician use?Networking
  44. 194.A technician is installing a new graphics card into a desktop computer. The graphics card has multiple display outputs, including HDMI, DisplayPort, and DVI-D. The client's monitor only has a VGA input. Which of the following adapters is REQUIRED to connect the new graphics card to the client's monitor?Hardware
  45. 195.A client reports that their external USB hard drive is not recognized by their computer. The technician confirms the drive is powered on and spins up, and has tried different USB ports and cables. Other USB devices work fine on the same ports. Which of the following is the MOST appropriate next step in troubleshooting?Hardware and Network Troubleshooting
  46. 196.A user's smartphone case feels warm and the back panel appears to be bulging slightly outward. What is the MOST appropriate immediate action for the technician to take?Hardware and Network Troubleshooting
  47. 197.A technician is upgrading the RAM in a server that requires Error-Correcting Code (ECC) memory. The existing memory modules are Unbuffered ECC (UDIMM ECC). Which of the following memory types would be compatible and provide ECC functionality for this server?Hardware
  48. 198.A technician is setting up a new Wi-Fi access point (AP) in a dense office environment with several existing APs. After configuring the new AP, client devices report intermittent connectivity and slow speeds when connected to it. A site survey reveals high levels of interference. Which of the following adjustments should the technician make to the new AP's configuration to mitigate this issue?Hardware and Network Troubleshooting
  49. 199.A network administrator is troubleshooting a file transfer issue between an old application server and a client. The application uses unencrypted FTP to transfer files. Which pair of ports should the administrator verify are open on the firewall for FTP control and data connections?Networking
  50. 200.A network administrator is setting up a new virtualization host and needs to ensure that the virtual machines can communicate with each other and with the external network. The administrator configures a virtual switch on the hypervisor. What is the primary function of this virtual switch?Virtualization and Cloud Computing