CompTIA Core
15 free questions with worked answers, and 103 more in the full bank.
Free questions
A technician is replacing a laptop keyboard. After reassembly, the display does not turn on but external monitors work. The MOST likely cause is...
1 mark · Easy
A user complains their mobile device screen frequently turns off when they hold it to their ear during a call. What component is responsible?
3 marks · Medium
A network technician is tasked with running cables through an air circulation space above a drop ceiling. What type of cable MUST be used?
3 marks · Medium
A small business needs to upgrade its wireless network to support the maximum number of devices and highest speeds utilizing both 2.4 GHz and 5 GHz bands, plus a 6 GHz band. Which standard should they adopt?
4 marks · Hard
A user is upgrading their motherboard and CPU. The new processor is an AMD Ryzen 7000 series. Which CPU socket type should the new motherboard have?
3 marks · Medium
A gamer is building a new PC and wants the fastest possible boot times and game loading speeds. Which storage technology should they install on their motherboard?
1 mark · Easy
A developer is testing an application on a Type 2 hypervisor. They are about to install a major software update and want to quickly revert if it fails. What feature should they use?
4 marks · Hard
A startup is developing a web application. They want to rent servers, storage, and networking from a cloud provider but will install and manage their own OS and databases. Which service model is this?
3 marks · Medium
A user reports that their laser printer is producing pages with ghosted images from previous prints. Which step of the laser printing process is MOST likely failing?
4 marks · Hard
A technician is troubleshooting a desktop that powers on, fans spin, but there is no display and it emits 3 short beeps. What does this indicate?
3 marks · Medium
A laptop screen is entirely black, but shining a flashlight on it reveals a faint image of the Windows desktop. What component has failed?
4 marks · Hard
A user needs to replace a failing internal storage drive in a thin-and-light ultrabook. Which form factor is MOST likely to fit?
1 mark · Easy
A technician is terminating a Cat 6 cable to connect a PC to a wall jack. Which connector should be used?
3 marks · Medium
A company is running fiber optic cable between two buildings. The networking team needs a connector that uses a push-pull mechanism and is half the size of older connectors. Which should they use?
4 marks · Hard
An office is experiencing slow network speeds when transferring large video files over the local network. They are currently using Cat 5 cable. What should they upgrade to for 1 Gbps speeds?
1 mark · Easy
More CompTIA Core questions (page 2 of 2)
Answers and explanations are in the full bank.
- During routine technical work, which statement about Linux rwx permissions should guide the technician? · 3 marks
- During routine technical work, which statement about a hypervisor should guide the technician? · 3 marks
- During routine technical work, which statement about an IPv6 link-local address should guide the technician? · 3 marks
- During routine technical work, which statement about APIPA should guide the technician? · 3 marks
- During routine technical work, which statement about a DHCP reservation should guide the technician? · 3 marks
- During routine technical work, which statement about Power over Ethernet should guide the technician? · 3 marks
- During routine technical work, which statement about a DNS AAAA record should guide the technician? · 3 marks
- During routine technical work, which statement about authentication-factor categories should guide the technician? · 3 marks
- During routine technical work, which statement about least-privilege administration should guide the technician? · 3 marks
- During routine technical work, which statement about data loss prevention should guide the technician? · 3 marks
- During routine technical work, which statement about Security+ incident containment should guide the technician? · 3 marks
- During routine technical work, which statement about controlled change management should guide the technician? · 3 marks
- During a workshop assessment, the reported condition is: A laptop battery is swollen and lifting the touchpad. What should the technician do? · 1 mark
- During a workshop assessment, the reported condition is: A desktop shuts down during heavy CPU load, and monitoring shows rapidly rising processor temperature. What should be checked? · 3 marks
- During a workshop assessment, the reported condition is: Firmware detects the storage drive, but startup reports that no bootable operating system is available after boot settings were changed. What should be reviewed first? · 1 mark
- During a workshop assessment, the reported condition is: A mirrored storage array reports degraded status after one member failed. What is the best response? · 3 marks
- During a workshop assessment, the reported condition is: A phone charges through one USB-C cable but cannot connect to a high-speed dock with that cable. What is the likely explanation? · 1 mark
- During a workshop assessment, the reported condition is: A network printer produces faded pages even after jobs reach its queue successfully. Which area should be checked first? · 3 marks
- During a workshop assessment, the reported condition is: A laptop connects to Wi-Fi but repeatedly disconnects only when its lid angle changes. What hardware issue is plausible? · 1 mark
- During a workshop assessment, the reported condition is: An endpoint displays pop-ups, launches unknown processes, and contacts suspicious domains. What is the appropriate first response? · 3 marks
- During a workshop assessment, the reported condition is: A Windows device requests its recovery key after firmware security settings were changed. What should be done? · 1 mark
- During a workshop assessment, the reported condition is: A Linux user can read a script but receives permission denied when trying to run it. Which permission should be examined? · 3 marks
- During a workshop assessment, the reported condition is: Clients on one subnet stopped receiving addresses after the DHCP server moved to another routed network. Which device feature is likely required? · 1 mark
- During a workshop assessment, the reported condition is: Users reach an application by IP address but not by its fully qualified domain name. Which check has the highest relevance? · 3 marks
- During a workshop assessment, the reported condition is: A copper link negotiates only 100 Mbps even though both endpoints support 1 Gbps. What should be investigated? · 1 mark
- During a workshop assessment, the reported condition is: A workstation was moved to a new switch port and now receives an address from the wrong department subnet. Which configuration should be compared? · 3 marks
- During a workshop assessment, the reported condition is: Wireless users in a crowded room have strong signal but low throughput and high channel utilization. Which improvement should follow measurement? · 1 mark
- During a workshop assessment, the reported condition is: A monitoring system can ping a switch but cannot retrieve interface counters through SNMP. What should be checked? · 3 marks
- During a workshop assessment, the reported condition is: A remote user establishes a VPN tunnel but cannot access internal subnets. Which items should be reviewed? · 1 mark
- During a workshop assessment, the reported condition is: Clients suddenly receive addresses and gateways from an unknown DHCP server. Which Layer 2 control can reduce this risk? · 3 marks
- During a workshop assessment, the reported condition is: A user approves an MFA prompt they did not initiate, and a new session appears immediately. What should happen? · 1 mark
- During a workshop assessment, the reported condition is: Sensitive customer records are copied to an unmanaged removable drive against policy. Which control and response are relevant? · 3 marks
- A supervisor tests your knowledge of BitLocker. Which answer is best? · 4 marks
- A+ sizing case CT4-P1 estimates 65 W CPU, 120 W GPU, and 70 W other peak load. With 25% headroom, what minimum rounded-up 10 W PSU capacity is calculated? · 1 mark
- A+ memory case CT4-M1 installs 2 modules of 4 GB each. What total physical RAM capacity is present? · 1 mark
- A+ transfer case CT4-T1 copies 5 decimal GB over an ideal 100 Mbps link. Ignoring overhead, what time is expected? · 1 mark
- A+ storage case CT4-R1-1 creates 2 independent RAID 1 pairs from 4 equal 2 TB drives. What total usable capacity results? · 1 mark
- A+ array CT4-R5-1 uses 4 equal 3 TB drives in RAID 5. What approximate usable capacity is available before formatting? · 1 mark
- Network+ subnet case CT4-H1 uses prefix /24. How many conventional usable IPv4 hosts does it support? · 1 mark
- Network+ PoE case CT4-E1 has 120 W available and devices requiring 12 W each. Ignoring reserve, what maximum whole-device count fits? · 1 mark
- A+ UPS estimate CT4-U1 has 500 Wh nominal energy, 80% usable efficiency, and 200 W load. What idealized runtime follows? · 1 mark
- Security+ risk case CT4-S1 assigns $80,000 asset value and 15% exposure factor. What is the SLE? · 1 mark
- A+ backup case CT4-B1 keeps 2 protected sets, each containing a 250 GB full backup and 6 incrementals of 15 GB. What raw capacity is required? · 1 mark