CompTia TestOut A-Plus Certification practice test study guide
What is the maximum distance between hops that is allowed by a Z-Wave device on a mesh network?
250 feet
While working on a Windows workstation, you enable Remote Desktop. Which of the following ports MUST be open on the server's firewall to allow remote clients to access the desktop through Remote Desktop?
3389
Which of the following medical devices utilize Bluetooth or Wi-Fi technology to communicate with a mobile phone? (Select two.)
Fingertip EKG CGM
Which of the following help to improve the security of sensitive information on your mobile device if it is lost or stolen? (Select three.)
Locator applications A screen lock Remote wipe
After using your LCD monitor for about three months, you notice a small black dot in one area of the screen. Regardless of what is shown on the monitor, the dot remains the same color and in the same location. Which of the following is the BEST method for removing the black dot from the monitor?
Play a video designed to fix dead pixels.
What type of operating system do embedded devices use?
Real-time operating system
You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 150 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz. Which 802.11 standard works BEST in this situation?
802.11n
Which of the following types of internet connection services allows you to be truly mobile while maintaining your internet connection?
Cellular
You have purchased a 1600 x 1200 LCD monitor and connected it to the DVI-I port on your computer using a DVI-D cable. You configure the screen resolution at 1280 x 1024 with 24-bit color. The display output seems to be fuzzy and stretched. Which of the following BEST describes the action you should take to correct the problem?
Change the screen resolution to the native resolution of the monitor.
Which of the following features are supported by digital audio in a sound card? (Select two.)
Compress audio data to support Dolby Digital or DTS surround sound. Play digital audio directly from an internal CD player.
Which of the following printer types uses a printhead with a grid of 9 pins to form characters and graphics on the paper?
Dot matrix
You have just installed a new video card in a user's Windows workstation. When the system is powered on, the screen displays in 16 colors at 640 x 480 resolution. Which of the following will BEST resolve this problem?
Download and install the latest driver from the video card manufacturer's website.
Since it has no moving parts, a CPU will usually work properly for several years. Which of the following is a common factor that might cause a CPU to fail premature.
Electrostatic discharge (ESD)
While you are answering help desk calls, a field customer calls and complains that he cannot print to a workgroup laser printer. Which of the following should be the first question you ask?
Have you ever successfully printed to that printer?
Which term describes the layer of software that resides between the virtual operating system and the physical hardware in a virtualization environment?
Hypervisor
You have recently purchased a new, foldable smart phone. Which of the following types of mobile device display technologies is MOST likely being used for the foldable display?
OLED
As a network administrator for your company, you want to set up a network device that manages internal traffic between servers and clients. Which of the following would BEST meet your requirements?
Reverse proxy server
One of your employees has called to complain about their laptop computer. The employee reports that their laptop keeps turning off automatically before the level reaches 5%. Which of the following is MOST likely causing this issue?
The power meter is incorrectly reporting the available battery power.
