Practice Tests - Chapter 3: Mobile Devices Flashcards
Which type of laptop backlight is typically used in smaller mobile devices and consumes the least amount of power?
A. IPS
B. TN
C. LED
D. CCFL
C. LED
Smaller devices, such as tablets and phones, almost exclusively use LED backlighting, which is smaller and consumes less power than CCFLs.
In which scenario would you use the Fn key and the F10 key shown here?
A. To turn the screen brightness down
B. To turn the screen brightness up
C. To turn the speaker volume down
D. To turn the speaker volume up
B. To turn the screen brightness up
Because of the much smaller space available for keys, some laptop keys are consolidated into special multifunction keys. These keys are accessed through the standard keys by using a special function (Fn) key. Video adjustments come in two varieties: changing the video output and dimming or brightening the screen. In this case, there is a large sun icon for brightening the screen. Some laptops will use a smaller sun to signify dimmer and a larger sun to signify brighter or plus and minus signs next to the suns or up and down arrows next to the suns. You may also see special function keys to turn network connections on or off or play, fast forward, or rewind media.
You are purchasing a mobile device that allows you to use your finger to input information. What type of touch screen technology does this device use?
A. Capacitive
B. Human-based
C. Warmth
D. Resistive
A. Capacitive
Capacitive touch screens are a little less accurate than resistive touch screens but more responsive. They respond to changes in electrical current, and as such, the human fingertip works great as the facilitator of input.
You are using a public Wi-Fi hotspot and believe that someone is trying to hack into your laptop. Which laptop feature should you use to immediately turn off all wireless connections?
A. Silent mode
B. Quiet mode
C. Airplane mode
D. Connectionless mode
C. Airplane mode
Airplane mode turns off all wireless connections on the mobile device. It’s common on phones and tablets, and some laptops have the feature as well.
You have been asked to purchase a new camera for the company photographer. Some of the cameras are marketed as “smart” cameras. What key feature does this likely mean the camera includes?
A. Wi-Fi
B. RJ-45
C. Separate video processor
D. Internal hard drive
A. Wi-Fi
Smart cameras have built-in wireless network connectivity for easy picture and video transfers. Many will include Wi-Fi, Bluetooth, and NFC.
A user approaches you and asks for a CPU upgrade so his Lenovo laptop will run faster. What is most likely the easiest way to meet this user’s needs?
A. Remove the CPU and replace it with a faster one that fits the same socket.
B. Replace the laptop with one with a faster CPU.
C. Replace the motherboard with a standard laptop motherboard with a faster processor.
D. Replace the motherboard with a Lenovo laptop motherboard with a faster processor.
B. Replace the laptop with one with a faster CPU.
Laptop processors generally are permanently attached to the motherboard. And motherboards are normally proprietary, meaning one from a certain model will not fit into a different case. Therefore, the best course of action is likely a laptop upgrade.
In which scenario would you use the Fn key and the F4 key shown here?
A. To turn the touch pad on or off
B. To change the video output to an external monitor
C. To change the screen orientation from landscape to portrait
D. To turn the keyboard backlight on or off
B. To change the video output to an external monitor
Because of the much smaller space available for keys, some laptop keys are consolidated into special multifunction keys. These keys are accessed through the standard keys by using a special function (Fn) key. Nearly every laptop has a video connector on the back or the side to plug in an external monitor or a projector. You will need to use the video toggle key to get this external port to work.
You are using a laptop computer and the wireless network card fails. There are no wired ports nearby. You need to send a file to your boss, who is in another country, in the next ten minutes. What should you do to fix the situation?
A. Remove the defective network card and install a new one.
B. Install a USB to RJ-45 dongle.
C. Install a USB to Wi-Fi dongle.
D. Install a USB to Bluetooth dongle.
C. Install a USB to Wi-Fi dongle.
A USB to Wi-Fi dongle will allow your computer to use that wireless network connection to get back up and running. Once you are on the network again, you can send the file. Replacing a network card on a laptop generally means replacing the entire motherboard. You can also get USB to Ethernet adapters for wired networking.
Which type of mobile device is known for using electrophoretic ink?
A. E-reader
B. Smart watch
C. Smart glasses
D. Tablet
A. E-reader
Most e-readers use a technology called electrophoretic ink, or E Ink, which is a proprietary type of electronic paper. Although E Ink is available in color, many consider its best applications to be in grayscales or pure black and white.
What type of connection are you using if you use a USB cable to connect your laptop to your cellular phone in order to use the cellular wireless connection from the laptop?
A. Hotspot
B. Tethering
C. USB networking
D. Phoning
B. Tethering
Tethering is connecting a device to a mobile hotspot. The term used to be reserved only for when you were connected via USB cable, as opposed to connecting via wireless. Some devices will not function as a mobile hotspot but will allow you to tether a mobile device to it with a USB cable so the mobile device can share the cellular Internet connection.
What characteristic was the BlackBerry smartphone most famous for?
A. Wi-Fi
B. Hardware keyboard
C. Anti-glare
D. Trackball
B. Hardware keyboard
The built-in hardware keyboard was the BlackBerry’s key defining feature; indeed, even as recently as 2014, BlackBerry was still releasing phones with physical keyboards to please their loyal buyers.
Which laptop accessory should you purchase if you want to protect the device against theft?
A. Docking station
B. Change Protective cover
C. Cable lock
D. LoJack
C. Cable lock
To physically secure your laptop, use a cable lock. Essentially, a cable lock anchors your device to a physical structure, making it nearly impossible for someone to walk off with it. LoJack is software that can help secure data but does not prevent physical theft. A protective cover will help protect your device from damage if it gets dropped (and some are waterproof too), but it won’t stop someone from stealing it.
The hard drive in your manager’s hard drive has failed, and you need to replace it. Your manager asks about the benefits of replacing it with an SSD instead of an HDD. What should you tell her? (Choose two.)
A. They are cheaper.
B. They take up less space.
C. They consume less power and generate less heat.
D. They operate silently.
C. They consume less power and generate less heat.
D. They operate silently.
SSDs have several advantages over magnetic HDDs. They include faster startup and read times, less power consumption and heat produced, silent operation, and higher reliability because of lack of moving parts, and they are less susceptible to damage from physical shock and heat production.
Which laptop expansion port was designed as an industry standard to replace VGA and DVI ports and is backward compatible with both standards?
A. DisplayPort
B. VideoPort
C. Thunderbolt
D. HDMI
A. DisplayPort
The Video Electronics Standards Association (VESA) introduced DisplayPort in 2008. It was designed to be an industry standard and to replace VGA and DVI. It’s also backward compatible with VGA and DVI by using adapters. A display port is intended to be for video devices only, but like HDMI and USB, it can transmit audio and video simultaneously.
What is the maximum data speed of an ExpressCard 2.0 card running in USB 3.0 mode?
A. 480Mbps
B. 2.5Gbps
C. 5.0Gbps
D. 6.0Gbps
C. 5.0Gbps
ExpressCard version 2.0 devices have a maximum speed of 5.0Gbps, regardless of if they run in PCIe 2.0 or USB 3.0 mode.
You have recently purchased a laptop computer with a touch screen. It allows you to draw images on the screen and save them on the computer. Which device is responsible for converting the input into the image that you are able to save?
A. Inverter
B. Touchpad
C. Digitizer
D. Touch screen
C. Digitizer
A digitizer is a device that can be written or drawn on, and the content will be converted from analog input to digital images on the computer. Digitizers take input from a user’s finger or a writing utensil, such as a stylus. Many touch screen devices have a digitizer built in to them.
A technician has a failed Lenovo laptop, and he suspects the motherboard is bad. He has several other laptops available from which he can harvest parts. Which of the following statements is most likely true regarding the replacement motherboard he selects?
A. The motherboard is not replaceable.
B. He can choose a motherboard from any other laptop.
C. He can choose a motherboard from any other Lenovo laptop.
D. He must choose a motherboard from that same model of Lenovo laptop.
D. He must choose a motherboard from that same model of Lenovo laptop.
Laptop motherboards are nearly always proprietary, meaning they are not interchangeable between manufacturers or even between models from the same manufacturer. When a laptop motherboard needs to be replaced, you most likely need a laptop motherboard from the same make and model.
A technician needs to replace a failed laptop hard drive. The user stores a large amount of video on her computer and needs the largest capacity drive possible. What type of hard drive should you install?
A. SSD
B. Magnetic
C. Hybrid
D. Flash
B. Magnetic
Traditional magnetic hard drives will have greater capacity than SSD (which are a type of flash memory) or hybrid drives.
Which of the following wireless communication types has a maximum distance of about 4”?
A. NFC
B. Wi-Fi
C. IR
D. Bluetooth
A. NFC
Near field communication (NFC) is a wireless technology that uses radio frequency (RF) signals with limited range, about 4” (10cm).
Which two components of a laptop are the most useful when making a video conference call? (Choose two.)
A. Digitizer
B. Webcam
C. Microphone
D. Inverter
B. Webcam
C. Microphone
Webcams are nearly universal on laptops today. The most common placement is right above the display on the laptop. Microphones are also often built into the display, next to the webcam.
Which mobile accessory is shown here?
A. Credit card reader
B. Memory card reader
C. External battery pack
D. Wi-Fi range extender
A. Credit card reader
If you need to make mobile sales, you will need a credit card reader and an app to make the transactions. Many mobile credit card readers are small devices that plug into the speaker/headphone jack, like the PayPal Here shown here.
Which mobile connection type allows you to share your cellular Internet connection with a Wi-Fi enabled device?
A. Hotspot
B. NFC
C. Bluetooth
D. IR
A. Hotspot
If you have a cellular-enabled device such as a smartphone, you may be able to turn that phone into a mobile hotspot. By doing so, you can share your cellular Internet connection with Wi-Fi enabled devices such as a laptop or tablet.
You are responsible for replacement parts within your company’s IT department. Because of the critical nature of your business, you need to have replacement parts on hand in the event of a hardware failure. Your company uses four different types of laptops, two HP and two Dell. How many different types of motherboards do you most likely need to stock?
A. One
B. Two
C. Three
D. Four
D. Four
Laptop motherboards are nearly always proprietary, meaning they are not interchangeable between manufacturers or even between models from the same manufacturer. When a laptop motherboard needs to be replaced, you most likely need a laptop motherboard from the same make and model.
In a laptop computer, which component is responsible for providing light to the display?
A. Backlight
B. Inverter
C. LCD
D. Screen
A. Backlight
LCD displays do not produce light, so to generate brightness, LCD displays have a backlight. A backlight is a small lamp placed behind, above, or to the side of an LCD display.