IT ENGLISH: COMPTIA #19

Which of the following standards supports MIMO technology?

• 802.11a

• 802.11b

• 802.11g

• 802.11n

Which of the following components enables the input on a mobile device's touch screen?

• OLED

• Digitizer

• Inverter

• CMOS sensor

A technician unboxed a new computer, plugged it in to a UPS, and connected the requested peripherals. The computer lights and fans turn on, but the technician hears three loud, consecutive beeps during boot. Which of the following actions will remediate the issue?

• Replacing the power supply

• Replacing the UPS

• Changing the CMOS battery

• Reseating the RAM

An online retailer wants to save money and is considering migrating to the public cloud so capacity can be added during the peak shopping season and automatically removed when the peak is over. Which of the following BEST describes this aspect of cloud computing?

• Rapid elasticity

• Metered utilization

• Shared resources

• High availability

A user failed to gain access to a building's entrance after security measures at the entrance were upgraded last week. The company implemented the 13.56MHz frequency short band, and users can now utilize their mobile devices to authenticate. Which of the following has to be enabled for the mobile device to authenticate?

• Bluetooth

• Biometrics

• NFC

• PIN

A user's computer is not receiving a network connection. The technician confirms that the connection seems to be down and looks for the user's port on the patch panel. The port and patch panel are not labeled. Which of the following network tools should the technician use to identify the port?

• Network tap

• Punchdown tool

• Toner probe

• Crimper

A user, who is attempting to give a presentation via a projector in a conference room, reports that the projector has video but no audio. Which of the following will MOST likely resolve the issue?

• Changing the input on the projector to VGA

• Changing the output on the PC to DVI

• Modifying the projector's refresh rate

• Utilizing an HDMI connection

An IT manager discovered that hundreds of pages of printed materials are being recycled each day because the materials are left on the printer tray instead of being picked up by users. Which of the following would BEST prevent this waste?

• Send friendly reminders to not print unnecessarily.

• Enable duplex printing to reduce paper utilization.

• Bill each department for the excess material cost.

• Require a code or badge before releasing a print job.

A technician powers on a PC and its monitor and sees the following error message: No input signal detected - The display lights on the computer are on. Which of the following is a possible solution?

• Changing the BIOS settings

• Changing the connector setting on the monitor

• Checking the power plug on the monitor

• Checking the power plug on the PC

While using a popular videoconferencing program, the user selects a webcam, but the software is unable to open the webcam. The webcam was working the previous day. Which of the following should be done to address this issue?

• Close other video software and retry.

• Adjust the conference software to a compatible resolution.

• Switch the video from the webcam to 'conference' mode.

• Reseat or replace the webcam.