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Total 312 questions

CompTIA A+ Core 1 Exam (2025) Questions and Answers

Question 1

An organization upgrades all desktops to Windows 11 and must ensure protection from malicious software at startup. Which option should be enabled?

Options:

A.

Trusted Platform Module

B.

Hardware security module

C.

Secure Boot

D.

BIOS password

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Question 2

A technician is replacing a failed power supply in a ten-year-old computer When installing the customer-provided power supply, the technician discovers the ATX connector would not plug into the motherboard. The customer wants a cost-effective solution. Which of the following should the technician do next?

Options:

A.

Adjust the input voltage.

B.

Install a modular power supply.

C.

Rebuild the failed power supply.

D.

Use a 20-pin to 24-pin adapter.

Question 3

A technician receives a tablet that looks like it has a bulge inside. The bulge is pushing the screen away from the backplate. The tablet still turns on when it is plugged in, but the screen looks damaged and turns off when unplugged. Which of the following is the most likely cause of this issue?

Options:

A.

Malfunctioning power supply

B.

Damaged charge port

C.

Swollen battery

D.

Broken screen

Question 4

A technician is setting up a workstation. Which of the following settings should the technician configure to ensure that users can connect to the network? (Select three).

Options:

A.

APIPA

B.

Gateway

C.

IP address

D.

Subnet mask

E.

Static routes

F.

UPnP settings

G.

NAT rules

Question 5

A technician installs an upgraded wireless access point. The technician then notices the activity light comes on briefly and turns off. The access point continues to exhibit this behavior repeatedly and does not come online. Which of the following is the most likely cause of this issue?

Options:

A.

High latency

B.

Port flapping

C.

External interference

D.

Channel conflict

Question 6

A technician receives a tablet that looks like it has a bulge inside. The bulge is pushing the screen away from the backplate. The tablet still turns on when it is plugged in, but the screen looks damaged and turns off when unplugged. Which of the following is the most likely cause of this issue?

Options:

A.

Malfunctioning power supply

B.

Damaged charge port

C.

Deprecated battery

D.

Broken screen

Question 7

A company policy change requires all computers to be encrypted. Which of the following technologies should a technician configure to meet this new requirement?

Options:

A.

NVMe

B.

RISC

C.

ARM

D.

TPM

Question 8

A technician receives a S.M.A.R.T. error on a PC. When the technician presses the Esc key, the PC continues to turn on without any further issues. Which of the following should the technician do next?

Options:

A.

Replace the HDD.

B.

Update the PC's BIOS.

C.

Close the ticket.

D.

Change the NIC.

Question 9

An SAS RAID array has severely degraded and gone offline A systems administrator examines the syslog, and the point of failure is not obvious. Which of the following techniques should the administrator use to identify the issue (Select two).

Options:

A.

Run a magnet over each drive.

B.

Check if one of the drives is not level

C.

Listen for clicking and grinding noises

D.

Check the OS logs

E.

Update the RAID controller firmware.

F.

Check the historical SMART data

Question 10

A network administrator must ensure that a printer will still be assigned a specific IP address even if all addresses are depleted. Which of the following network configuration concepts is this describing?

Options:

A.

VLAN

B.

Lease

C.

Reservation

D.

Exclusion

Question 11

An employee who travels worldwide wants a workstation to perform the same whether the workstation is in the corporate office environment or elsewhere. Which of the following should a technician implement?

Options:

A.

Public cloud

B.

VDI

C.

SSH

D.

SaaS

Question 12

A user connects their laptop to a projector in a conference room. Once connected, the userreports the screen is smaller at the bottom than at the top. The user tries restarting the laptop and then disconnecting and reconnecting the cable to the projector. Which of the following should a technician do to resolve the issue?

Options:

A.

Replace the HDMI cable.

B.

Power cycle the projector.

C.

Adjust the keystone

D.

Increase the resolution.

Question 13

Which of the following connector types is associated with coaxial terminations serving cable internet deployments?

Options:

A.

DB9

B.

ST

C.

F-type

D.

RJ45

Question 14

A salesperson is unable to use a personal device to access emails and calendar features at a client site but was able to use the device while at the office. Which of the following policies has been enforced on the salesperson's mobile device?

Options:

A.

MOW

B.

MAN

C.

MFA

D.

MAM

Question 15

Which of the following is an isolated virtual machine?

Options:

A.

Sandbox

B.

Hypervisor

C.

Container

D.

VDI

Question 16

A technician is troubleshooting a workstation that repeatedly shuts down within ten minutes of being turned on. The technician notices a loud clicking sound coming from inside the case. Which of the following components should the technician check first?

Options:

A.

Exhaust fan

B.

Capacitors

C.

CPU fan

D.

Intake fan

Question 17

Which of the following is used to confirm that a physical port is working?

Options:

A.

Network tap

B.

Crimper

C.

Patch panel

D.

Loopback plug

Question 18

A student configures a wireless SOHO network to connect four laptops and one multifunction printer. All laptops must have internet access and be able to use the printer. Which of the following settings ensures the printer is always available?

Options:

A.

Configure dynamic IPs for the laptops and a static IP for the printer on the same subnet.

B.

Manually assign IP addresses to the laptops and printer based on the public IP from the ISP.

C.

Use APIPA for laptops and connect the printer to the ISP router.

D.

Use dynamic IP addresses from the ISP router for all the devices.

Question 19

A technician needs to figure out why a laser printer is intermittently not feeding paper to print. The technician verifies the issue by running several copy-and-print tests. Which of the following should the technician do next?

Options:

A.

Update the printer drivers.

B.

Select the correct paper size.

C.

Clean the pickup rollers.

D.

Replace the toner cartridge.

Question 20

Which of the following storage options would a technician most likely recommend to have large amounts of affordable capacity without concern for read times on a desktop computer?

Options:

A.

750GB NVMe M.2 SSD

B.

2x 1TB PCIe SSD in RAID 1

C.

2TB SATA 3.5" 5,400rpm HDD

D.

4TB SAS 2.5" 15,000rpm HDD

Question 21

A user joins a conference call with a Bluetooth headset. Which of the following has the user created?

Options:

A.

MAN

B.

PAN

C.

SAN

D.

WAN

Question 22

Which of the following has the best penetration through physical objects, such as walls?

Options:

A.

2.4GHz

B.

5GHz

C.

6GHz

D.

NFC

Question 23

A multifunction printer in a small office recently had issues with scan-to-email functionality. The manufacturer has an update ready to fix the printer issues. Which of the following would a technician most likely deploy to remediate the issue?

Options:

A.

Firmware

B.

Driver

C.

OS update

D.

HSM

Question 24

A technician has discovered that some users are connected to a network that is not available on the user interface. Which of the following is the most effective tool the technician can use to identify networks that are not broadcasting SSIDs?

Options:

A.

Cable tester

B.

Toner probe

C.

Wi-Fi analyzer

D.

Loopback plug

Question 25

A user is receiving many unsolicited emails. Which of the following controls can be configured to best reduce these types of emails?

Options:

A.

Load balancer

B.

Spam gateway

C.

Mail forwarding

D.

Proxy servers

Question 26

Which of the following types of connectors does an IDE hard drive use for power?

Options:

A.

F type

B.

SC

C.

Molex

D.

Lightning

Question 27

A technician wants to upgrade a computer to a new Windows version. The Windows Upgrade Advisor states that the computer is not compatible with the new Windows version due to a lack of TPM 2.0 support. Which of the following should the technician do next?

Options:

A.

Enable the module in the UEFI BIOS.

B.

Install an HSM in the computer.

C.

Perform a clean Install of the new Windows version.

D.

Implement BitLocker on the computer.

Question 28

Which of the following cloud models would multiple organizations in the same industry most likely use?

Options:

A.

Public

B.

Hybrid

C.

Community

D.

Private

Question 29

An employee's screen keeps flashing. Sometimes the picture goes out and comes back. The employee checks the power cord and confirms the device is plugged in fully. Which of the following should a technician check for first?

Options:

A.

Loose video cable

B.

Failing graphics card

C.

Conflicting drivers

D.

Swollen motherboard capacitor

Question 30

Which of the following allows for a beam of light to transmit data through a flexible cable?

Options:

A.

Coaxial

B.

HDMI

C.

Thunderbolt

D.

Single-mode fiber

Question 31

A company deploys server machines in a public cloud. Which of the following cloud service models is this an example of?

Options:

A.

Platform as a service

B.

Anything as a service

C.

Infrastructure as a service

D.

Software as a service

Question 32

A technician is installing a new high-end graphics card that uses a 12VHPWR connector. Which of the following is the maximum wattage supported by this power connector?

Options:

A.

400W

B.

MOW

C.

600W

D.

700W

Question 33

A technician needs to ensure all data communications on all network devices are encrypted when logging in to the console. Which of the following protocols should the technician enable?

Options:

A.

SSH

B.

LDAP

C.

FTPS

D.

SMTP

Question 34

A technician receives several complaints from the same office about VoIP calls sounding broken up, being difficult to hear, and having lagging audio. The technician arrives on-site and runs an internet speed test on several wired and wireless computers. Internet speed seems normal throughout the office. Which of the following should the technician do to fix the call issues?

Options:

A.

Enable QoS in the router

B.

Configure PoE on the switch

C.

Change the encryption from WPA3 to WPA2

D.

Turn on MAC address filtering

Question 35

Which of the following utilizes specialized ports on a laptop to expand the local connection options?

Options:

A.

NFC adapter

B.

Docking station

C.

Port replicator

D.

USB dongle

Question 36

Which of the following minimizes the time it takes to connect a display, keyboard, mouse, and network cable to a laptop?

Options:

A.

Lightning interface

B.

Port replicator

C.

USB hub

D.

Bluetooth

Question 37

Which of the following services is used to allocate IP addresses in an enterprise-wide environment?

Options:

A.

DNS

B.

Syslog

C.

Telnet

D.

DHCP

Question 38

A technician needs to move a workstation to a different logical network segment. Which of the following technologies should the technician use?

Options:

A.

DHCP

B.

VLAN

C.

DNS

D.

VPN

Question 39

Which of the following describes the function of an injector?

Options:

A.

To provide only data connectivity

B.

To supply power across a cable

C.

To improve wireless performance

D.

To extend a network connection

Question 40

A technician has just installed a new SSD into a computer, but the drive is not appearing. Which of the following is most likely the reason's?

Options:

A.

The SSD is faulty and should be replaced by the manufacturer

B.

The SSD has not been properly formatted and is not readable

C.

The SSD is incompatible with the motherboard

D.

The SSD has not boon installed properly and should be reseated

Question 41

A new directive mandates the use of a security component to securely allow users to authenticate to systems, access sensitive data, and enter the office. The component must provide an additional factor of authentication alongside user accounts and cannot be something the user o Which of the Mowing components best meets these requirements?

Options:

A.

Fingerprint reader

B.

Smart card

C.

Secure token

D.

NFC scanner

Question 42

A user routinely connects and disconnects multiple devices from a laptop. Which of the following options should a technician recommend to facilitate ease of user mobility?

Options:

A.

Serial interfaces

B.

Docking station

C.

Network switch

D.

USB hub

Question 43

A support technician receives a call stating that a user has added a device to the network. The user used the same configurations from another workstation. When both workstations are turned on, neither can access the network reliably. Which of the following is the most likely cause of the issue?

Options:

A.

The new computer has a duplicate IP address.

B.

The DNS server is registering both hostnames.

C.

The network cable was improperly terminated.

D.

The security on the switchport needs to be reset.

Question 44

A technician is troubleshooting a computer that has random BSOD alerts and intermittently freezes during normal use. Performance degrades as the day goes on. No new software or hardware changes have been implemented. Freezing occurs under performance-intensive operations. Which of the following hardware components is most likely at fault?

Options:

A.

Video card

B.

HDD

C.

RAM module

D.

TPM

Question 45

A technician is troubleshooting internet connectivity issues after a firewall update. Users report that they can access local network resources, such as printers and shares, but cannot access the internet. Which of the following settings is most likely causing the issue?

Options:

A.

Static IP assignments

B.

Default gateway

C.

Subnet mask

D.

VLANs

Question 46

A user on the edge of a building reports slow Wi-Fi and intermittent drops. Which action will solve the issue?

Options:

A.

Enable the 5GHz band

B.

Run ipconfig /flushdns

C.

Upgrade laptop to Wi-Fi 6 NIC

D.

Install additional wireless APs around the location

Question 47

A company wants to have fast read speeds for its locally stored data. Which of the following configurations has the lowest cost to fulfill this requirement?

Options:

A.

RAID 0

B.

RAID 1

C.

RAID 5

D.

RAID 10

Question 48

A technician is troubleshooting issues occurring on a user's mobile device. Applications and the OS have slow response times, even when performing simple tasks, such as writing an email. Additionally, new applications occasionally fail to launch. Which of the following should the technician do next?

Options:

A.

Move the device to a room with a colder temperature.

B.

Close unnecessary programs.

C.

Reset to factory default settings.

D.

Check the battery health of the device.

Question 49

A user's wireless headset shows a "connected" status when turned on, but the Bluetooth list on the user's phone shows that the headset is "not connected." Which of the following should the technician do?

Options:

A.

Enter the PIN.

B.

Turn off Wi-Fi.

C.

Re-pair the devices.

D.

Enable Bluetooth.

Question 50

Which of the following connectors supports High-bandwidth Digital Content Protection (HDCP)?

Options:

A.

DVI-A

B.

F-type

C.

VGA

D.

DisplayPort

Question 51

While reviewing options in the BIOS/UEFI settings page to fix a laptop issue, a support technician notices an option to clear existing TPM keys. Which of the following would most likely happen if the TPM is cleared?

Options:

A.

Encrypted hard drives would probably not be accessible.

B.

All security certificates would need to be reinstalled from trusted roots.

C.

The device would need to be reenrolled in the MDM platform

D.

The laptop would need to be registered to the domain as a new client.

Question 52

Employees are concerned about sensitive data being printed on a shared multifunction printer located in a high-traffic hallway. Which of the following should a technician do to address this concern?

Options:

A.

Set up a PIN for user authentication at the printer

B.

Relocate the printer to an unused office space

C.

Configure printing of sensitive data through a specific tray

D.

Schedule print jobs to be released at certain times

Question 53

A user prints a job from a laser printer. The user wipes the page, and the words and images come off of it. The technician replaces the toner cartridge, but the issue persists. Which of the following components should the technician replace next?

Options:

A.

Fuser

B.

Drum

C.

Developer roller

D.

Discharge lamp

Question 54

Which of the following will a company most likely use to control which websites a user can access?

Options:

A.

Proxy server

B.

Spam gateway

C.

DHCP server

D.

RADIUS server

Question 55

A user can connect their laptop to the internet in the main office. However, when the user places the laptop on top of a motor on the factory floor, there is no internet connectivity. Which of the following is the most likely cause of this issue?

Options:

A.

Jitter

B.

Insufficient power levels

C.

External interference

D.

High latency

Question 56

Which of the following is used primarily for archiving data?

Options:

A.

PAN

B.

MAN

C.

SAN

D.

LAN

E.

WAN

Question 57

A customer reports a problem connecting to network resources. After asking open-ended questions, the technician determines the issue likely exists on the remote server. Which of the following should the technician do next?

Options:

A.

Document the findings.

B.

Test the theory

C.

Gather information

D.

Establish a plan of action

Question 58

A user purchases a new mobile phone and tries to connect it to the corporate communications and email applications without success. Which of the following should a technician do to allow the phone to connect?

Options:

A.

Configure biometric security settings.

B.

Turn on LTE hotspot connectivity.

C.

Enroll the device in the MDM software.

D.

Complete the company’s BYOD training process.

Question 59

A user reports that scanned or copied pages from an MFP show vertical lines down the page. The printer processes print jobs correctly. What should the technician do?

Options:

A.

Replace the transfer roller

B.

Remove the pickup rollers

C.

Clean the glass bed

D.

Apply a maintenance kit

Question 60

A Wi-Fi router is set up in a central room. A user on the outer edge of the building reports slow connections and intermittent internet drops. Which of the following actions will solve the issue?

Options:

A.

Enabling the 5GHz band

B.

Running the flushdns command

C.

Upgrading the laptop to a Wi-Fi 6 NIC

D.

Installing additional wireless APs around the location

Question 61

A user reports that a software application functioned as expected the previous day, but this morning, the user is unable to launch the application. Which of the following describe what the technician should do next?

Options:

A.

Research the symptoms

B.

Identify any changes the user has made

C.

Determine which steps need to be performed.

D.

Check the vendor's website for guidance.

Question 62

A user experiences intermittent Wi-Fi performance issues only in their office. Nearby RJ45 ports do not provide connectivity, but the user connects fine in other campus areas. AP coverage is weak in the user’s office. What is the most likely cause?

Options:

A.

APs are installed too far from the user’s office

B.

Brute-force attempts are causing drops

C.

Ports near the office are disabled

D.

The laptop has malware contacting unauthorized sites

Question 63

Which of the following resolutions is commonly known as Ultra HD?

Options:

A.

1920x1080

B.

2048x1080

C.

3840x2160

D.

7680x4320

Question 64

A technician needs to update a web server's IPv4 address in a DNS server. Which of the following records should the technician update?

Options:

A.

AAAA

B.

MX

C.

CNAME

D.

A

Question 65

A technician observes slow startup times on a laptop. Which of the following is most likely causing the issue?

Options:

A.

HDD

B.

RAM

C.

NIC

D.

BIOS

Question 66

A customer reports that a workstation has no internet connectivity. A technician confirms the port is disabled. Which of the following is most likely responsible for the issue?

Options:

A.

Patch panel

B.

Physical NIC

C.

Managed switch

D.

Stand-alone firewall

Question 67

A management team is concerned about enterprise devices that do not have any controls in place. Which of the following should an administrator implement to address this concern?

Options:

A.

MDM

B.

MFA

C.

vpn

D.

SSL

Question 68

A customer is able to print most documents with their USB inkjet printer, but the system is unresponsive when printing a certain report from a custom application. Nothing will print until the computer is restarted and the printer is power cycled. A technician remotes into the PC and confirms that the spooler stops working when this report is sent. After cleaning the spooler and reinstalling the drivers from the manufacturer's website, the issue persists. No other sites using the application report similar issues. Which of the following is most likely causing the issue?

Options:

A.

The manufacturer is curating content before it reaches the device to preserve ink.

B.

The application has a bug that the developer needs to address.

C.

The system is using the PostScript language instead of the PCL.

D.

Personal preferences have changed and documents with graphics are now online-only

Question 69

The output from a dot matrix printer has become lighter over time. Which of the following should a technician do to fix the issue?

Options:

A.

Clean the printhead.

B.

Replace the ribbon.

C.

Install a maintenance kit.

D.

Calibrate the alignment.

Question 70

A technician is having issues replacing a laptop's wireless card because the cover seems to be stuck Which of the following should the technician do next to troubleshoot this issued

Options:

A.

Check the product manual for the procedure

B.

Use a pry tool to force the cover open

C.

Insert the wireless card into the M.2 slot

D.

Try to move the cover by sliding it in all directions.

Question 71

An end user reports that their laptop has a blank screen. A technician observes the keyboard lights are on, and the fan is running. Which of the following should the technician do next?

Options:

A.

Check the display ribbon cable.

B.

Contact vendor support

C.

Replace the inverter

D.

Connect to an external monitor

Question 72

An IT specialist is setting up a new, custom computer. The specialist wants to minimize the number of power cables to keep the internal components organized and uncluttered. Which of the following power supply types should the specialist use?

Options:

A.

Modular

B.

Redundant

C.

Linear

D.

External

Question 73

Which of the following can be used to logically segment networks?

Options:

A.

MAC

B.

VLAN

C.

NIC

D.

DSL

Question 74

A desktop can connect to a file server but cannot access the internet. The ipconfig /all output shows a correct IP and DNS but no default gateway. What will most likely restore internet access?

Options:

A.

Flushing the DNS cache

B.

Choosing a different IPv6 address

C.

Setting the default gateway

D.

Disabling NetBIOS

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Total 312 questions