Chapter 1 - Mobile Devices

Front

You are configuring the mail app on an iPhone to use an Outlook.com email address. What configuration information do you need to enter to establish connectivity?

Back

Email address and password

Answer explanation

A. When configuring a mobile email client to access a commercial email provider, you typically just need your username and password to establish connectivity. Examples include Google, Yahoo, Outlook.com, and iCloud.

Front

Which type of smartphone display has fewer layers, providing more flexibility, a better viewing angle, and excellent color as compared to other technologies?

Back

OLED

Answer explanation

B. Many newer smartphones are boasting OLED displays for their light weight, flexibility, color depth, and wider viewing angle. IPS is a popular type of LCD (Liquid Crystal Display) that requires backlighting to display the image. TN was the LCD technology developed first. It uses less power and has a limited viewing angle, but it supports very fast refresh rates. LEDs can be used as the backlight for LCD systems. OLED displays don’t need a backlight because their carbon-based material can emit light and color.

Front

In this scenario what would you use the Fn key and the F10 key?

Back

To turn the screen brightness up

Answer explanation

B. Some laptop keys are consolidated into special multifunction keys to save valuable space. 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 on the F10 key, so pressing the Fn key and the F10 key simultaneously would increase the brightness. Some laptops use a smaller sun to label the key for dimming and a larger sun to label the key for brightening, or they use plus and minus signs or up and down arrows next to the suns. You may also see special function keys to turn network connections on or off or to play, fastforward, or rewind media.

Front

You are purchasing a mobile device that allows you to use multi-finger gestures to interact with the device. What type of touchscreen technology does this device most likely use?

Back

Capacitive

Answer explanation

A. Capacitive touchscreens are a little less accurate than resistive touchscreens but more responsive. They respond to changes in electrical current, and as such, the human fingertip works great as the facilitator of input. Resistive screens require a heavier touch and don’t support multi-touch input. Infrared screens don’t work with multi-touch gestures, but like resistive screens, they can be used with gloves on. Surface Acoustic Wave (SAW) is another type of touchscreen, but it is not popular

Front

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?

Back

Airplane mode

Answer explanation

C. Airplane mode turns off all wireless connections on a mobile device. It’s common on phones and tablets, and most laptops have the feature as well.

Front

What key feature does a "smart" camera likely include?

Back

Wi-Fi

Answer explanation

A. Smart cameras have built-in wireless network connectivity for easy picture and video transfers. Many will include Wi-Fi, Bluetooth, and Near-Field Communication (NFC). Smart cameras, such as security cameras, can also connect via Wi-Fi to your network and the Internet, and can thus be accessed and controlled by a cell phone.

Front

Your friend’s iPhone 13 will no longer charge. They have tried replacing the charging block and cable with compatible ones and tested the wall outlet. What should be done next?

Back

Take the phone to a repair shop.

Answer explanation

C. While it’s possible that the phone could be charged with a charging pad, most often phones won’t charge because the battery is worn out and needs replacing. Also, according to the Apple Support website, a phone that won’t charge likely needs servicing. Your friend should take their phone to a service center. They may be able to replace the battery or fix problems they find with the phone’s connector.

Front

Your customer brought you a laptop with an internal battery that will no longer charge. You have told them that replacing the battery will be no problem at all. Which of the following will you need to do first? Remove the back cover., Remove the keyboard., Disconnect the external power., Disconnect the LCD panel.

Back

Disconnect the external power.

Answer explanation

C. Legacy laptops may have a battery that is removable and replaceable by sliding a connector or removing a few screws from the back of the case, but you might not be able to find a compatible replacement. Modern laptops have internal batteries. Before removing the back (bottom) cover of the laptop to get to the battery, you must disconnect the power to avoid getting shocked or damaging the laptop.

Front

You're working as the IT support person at an accounting firm. One of the accountants dropped their keyboard, and the number 5 key is no longer there. This is a critical problem for an accountant. What is the most cost-effective way to get them up and running again?

Back

Replace the missing key.

Answer explanation

Individual keys can be replaced and is a very affordable solution. Our school laptop keys can be replaced for under $10. However, you must make sure to verify the type of clips, hinges, and possibly a cup for the model being replaced.

Front

Your boss has asked you to maximize the RAM in their laptop computer. You check the specifications and discover that the maximum system RAM is 32 GB of DDR4 RAM. The laptop currently has 16 GB onboard RAM and one empty slot. Which RAM module will you purchase? Options: One 16 GB SODIMM, One 32 GB SODIMM, One 16 GB DIMM, One 32 GB DIMM

Back

One 16 GB SODIMM

Answer explanation

ALWAYS check the device documentation for correct memory compatibility before purchasing. With one slot open (assuming a 2 slot system which is normal in laptops), the laptop has one 16 GB module, so a second 16 GB module will max out the memory. Next is SODIMM or DIMM? "SO" is Small Outline and is used in laptops and printers. "DIMM" is Dual Inline Memory Module. DIMMs are used in desktop systems.