CompTIA A+ Core Practice Exam

When you turn on your workstation, you immediately hear a grinding or clicking noise coming from inside the computer case. Which of the following are the MOST likely causes of this noise?

A wire hanging over a fan with the blades tapping on it. Dust buildup that needs to be cleaned.

Which of the following technologies does the 802.11ac wireless networking standard use to provide increased bandwidth and communication speeds? (Select two.)

Channel bonding to combine more channels in the 5 GHz band to allow more than double the bandwidth. MU-MIMO to allow multiple users to access the same channel.

You suspect that the power supply in your desktop PC is failing. You want to use a multimeter to test the power supply. Which multimeter setting should you use?

DC volts

You have just finished upgrading your desktop system's CPU. After running for about 15 minutes, the system spontaneously shuts down. Which steps should you take FIRST to begin troubleshooting the issue? (Select two.)

Make sure that you used thermal paste for the CPU. Check the CPU fan power.

Which kind of connector do you use to connect a modem to a standard telephone line?

RJ-11

When you print from your laser printer, the paper contains faint images from previous printouts. Which of the following components is MOST likely the cause? (Select two.)

Rubber scraper Fluorescent lamp

Which of the following are advantages of using an OEM replacement LCD display? (Select two.)

The LCD display is guaranteed to work as a replacement. The LCD display is the same quality as the screen you are replacing.

You have an IDE hard drive that is powered by a Molex 8981 connector. From the illustration below, select the Molex connector that is being used.

The Molex 8981 connector being used for the IDE drive is 1.

Which of the following is the biggest advantage of 64-bit processors over 32-bit processors?

The ability to use over 4 GB of memory.

An employee claims that they are unable to connect to the internet and has called the company's help desk for a solution. Having been assigned to this issue, you decide to first test whether or not TCP/IP is working correctly on the local computer. Which of the following is the BEST command to use for this test?

ping 127.0.0.1

Match each USB connector type on the left with the image label on the right. (Not all USB connector types will be used.)

1 - USB 2.0 Type-B 2- microUSB 3-miniUSB 4- USB 3.0 Micro-B

A technician is tasked with replacing a Wi-Fi antenna in a laptop computer. Which of the following places is the antenna MOST likely to be located in?

Around the laptop's bezel

One of your customers is still using an old dot matrix printer. While printing, the customer notices that the text is light or faint. You installed a new printhead, but the document printing is still faint. Which of the following should you do to troubleshoot the cause?

Check the gap between the printhead and paper.

You are in charge of putting together the display design for a new conference center at your organization. The conference center will be in a large auditorium with 500 or more seats. Which of the following technologies will provide a large display for such a group and also provide very high resolutions?

DLP projector

A technician is configuring the static TCP/IP settings on a client computer. Which of the following configurations are needed for internet communications? (Select three.)

DNS server address IP address with a subnet mask (IPv4) or subnet prefix length (IPv6) Default gateway address

Google Cloud, Amazon Web Services, and Microsoft Azure are some of the most widely used cloud storage solutions for enterprises. Which of the following factors prompt companies to take advantage of cloud storage? (Select two.)

Growing demand for storage Need to bring costs down

Which of the following protocols is used by an email client to retrieve messages from an email server, giving users the option to keep mail messages on the server?

IMAP

You have been asked to find a business service that would accommodate the company's current size but would also be able to scale as the company grows. The service needs to provide adequate storage as well as additional computing power. Which cloud service model would BEST fit these requirements?

IaaS

A technician is troubleshooting a computer that doesn't start up correctly. Which of the following could the technician use to troubleshoot the computer?

Known good spares

A printer is behaving erratically; you suspect a faulty parallel port. Which tool can you use to test the parallel port?

Loopback plug

You have recently purchased a 3D resin printer. After printing out a few 3D objects, the printer begins producing grinding noises. What is the MOST likely cause of the issue?

Loose printer screws

You have a DVD-ROM disc with no label, and you want to know if it has any important files on it. You insert the DVD-ROM into your optical media drive, and you double-click the drive letter to see the disc's contents. Which error message will you see if the DVD-ROM is not a valid disc?

No Media

Which of the following are characteristics of the 802.11g wireless standard? (Select three.)

Operates in the 2.4 GHz range. Backwards compatible with 802.11b devices. Maximum bandwidth of 54 Mbps.

After restoring the operating system on a mobile device, the touchscreen operates unpredictably. This happens in both the default orientation or when the screen is rotated. Which of the following BEST helps you correct the problem?

Screen calibration

Match each key printing term on the left to the appropriate description on the right.

Software that allows the printer to communicate with the print device Print driver Connection point for the print device to connect to a print server Printer port Location on the hard disk that holds print jobs waiting to be processed Print queue Software process that sends print jobs to the print device Print server Software process that captures print jobs from applications Print spooler

You are in the process of installing a motherboard in a system case. Which of the following objects should you place between the motherboard and the system case?

Standoffs

Which of the following are benefits UEFI provides that BIOS does not? (Select three.)

Supports 64-bit firmware device drivers. Faster startup times. Supports drives larger than 2.2 TB.

Your company's graphic designers were given laptop computers several months ago. The laptops have a 500-GB SSD drive for the operating system and applications and a 1-TB hard drive for storing media files. Now, a few of the graphic designers are complaining about slow performance on their SSD drives. What is the MOST likely cause of the slow performance?

The designers are storing media files on the SSD drive.

Match each LCD type with the corresponding benefit or characteristic.

The least expensive, thinnest, and most widely used type of LCD. WLED Able to dim specific regions of the screen. Full-array WLED Superior accuracy (most expensive type of backlighting technology). RGB-LED Produces better colors than WLED (consumes more energy). CCFL

Which aspects of virtual memory can you configure on a Windows workstation? (Select two.)

The paging file's location The paging file's maximum size