SG: Ch 11: Understanding Mobile Devices

Question 1

Apps for Android-based smartphones and tablets can be downloaded from which store?

A. App Store

B. Google Play

C. Android Store

D. Microsoft Store

Answer 1

B. Google Play

The app store for Android-based devices is Google Play. iOS devices download apps from the App Store. Windows-based apps can be downloaded from the Microsoft Store.

Question 2

Multi-touch refers to which feature of a touch screen device?

A. The ability to touch multiple parts of the screen at once to provide input

B. The ability to touch the screen multiple times consecutively as part of the same input stream

C. The ability for multiple people to use the touch screen device

D. The ability to use a stylus or a finger as an input device

Answer 2

A. The ability to touch multiple parts of the screen at once to provide input

Multi-touch simply means that the touch screen can accept multiple inputs from different parts of the screen at the same time. This allows for functionality such as pinch to zoom. It could mean that multiple people are using the touch screen at once, but it does not have to mean that.

Question 3

Which of the following is the name of the protocol used to transmit data in NFC peer-to-peer mode?

A. NDEF

B. NFCP

C. LLCP

D. SNEP

Answer 3

D. SNEP

NFC uses Simple NDEF Exchange Protocol (SNEP) in peer-to-peer mode. It’s based on LLCP (Logical Link Control Protocol).

Question 4

You need to provide users with memory cards that hold enough data for their needs. How much data can a microSDXC memory card hold?

A. 4 GB

B. 32 GB

C. 128 GB

D. 2 TB

Answer 4

D. 2 TB

MicroSDXC cards can hold up to 2 TB. SDHC cards can hold up to 32 GB, and standard SD cards can hold up to 4 GB.

Question 5

Which of the following is the most common input method for mobile devices?

A. Stylus

B. Resistive touch screen

C. Capacitive touch screen

D. Keyboard and mouse

Answer 5

C. Capacitive touch screen

Most mobile devices today use capacitive touch screens, which allow the user to use their finger as an input device. Resistive touch screens sense pressure, and a stylus is commonly used with them. Keyboards and mice are too large for most mobile devices.

Question 6

You are configuring wireless communication for several smartphones. Which of the following wireless communication methods has the shortest operational range?

A. Wi-Fi

B. Bluetooth

C. NFC

D. IR

Answer 6

C. NFC

Near field communication (NFC) has a maximum range of about 10 centimeters. Wi-Fi depends on the standard, but it usually has a range of 30 meters or more. Bluetooth Class 2 devices can operate at about 10 meters, and infrared (IR) has a maximum range of about 1 meter.

Question 7

You have a mobile touch screen device with a screen size of 11ʺ. What is the most likely classification of this device?

A. Tablet

B. Phablet

C. Smartphone

D. GPS

Answer 7

A. Tablet

Tablets generally have a screen size between 7ʺ and 13ʺ. Phablets were historically between 5ʺ and 7ʺ, and smartphones are smaller than phablets. GPS touch screens are usually around the same size as the screens on smartphones.

Question 8

Which iPhone version introduced the Lightning connector?

A. iPhone 4

B. iPhone 5

C. iPhone 6

D. iPhone 8

Answer 8

B. iPhone 5

The iPhone 5 was the first iPhone to use the Lightning connector. All newer iPhones use it as well.

Question 9

One of your friends wants to play a console-based game on her tablet. What type of accessory would you most recommend she connect and configure to help the experience?

A. VR headset

B. Game pad

C. AR headset

D. Extra battery pack

Answer 9

B. Game pad

For game players, a game pad or gaming controller may be a good accessory to have. VR headsets could also be good, but only for certain games. An AR headset isn’t likely to help with gaming. An extra battery pack could help extend the playing time, but it isn’t needed if the tablet is plugged in.

Question 10

You need to set up a Bluetooth headset for a user. He wants to know the farthest he can be away from his phone and still have it work. You do not have the documentation handy. What is the most likely maximum range that this Bluetooth accessory will have?

A. 10 centimeters

B. 10 meters

C. 100 meters

D. 1 kilometer

Answer 10

B. 10 meters

Most mobile Bluetooth accessories are Class 2 devices, which have a maximum functional range of 10 meters. The actual range will depend on the headset’s properties.

Question 11

A user is concerned about security after setting up wireless communications on his tablet. Which wireless communication method has an operational range of about 1 meter and a viewing angle of about 30 degrees?

A. Wi-Fi

B. Bluetooth

C. NFC

D. IR

Answer 11

D. IR

Infrared has an operational range of about 1 meter. Near field communication (NFC) has a maximum range of about 10 centimeters. Wi-Fi depends on the standard, but it usually has a range of 30 meters or more. Bluetooth Class 2 devices can operate at about 10 meters.

Question 12

Which of the following are advantages of e-readers using E Ink over tablets? (Choose two.)

A. More vivid colors

B. Longer battery life

C. Easier to read in bright light

D. Better screen resolution

Answer 12

B. Longer battery life

C. Easier to read in bright light

E-readers that use electrophoretic ink (E Ink) have a longer battery life than tablets and are easier to read in bright light conditions. They do not have more vivid colors or better screen resolution.

Question 13

A user wants to attempt to ensure that their boss can’t see where they are, based on tracking their iPhone. Which option should they disable?

A. Location Services

B. GPS

C. Tracking Services

D. Airplane Mode

Answer 13

A. Location Services

Apple calls its GPS services Location Services. For the phone to use GPS (and to be tracked), Location Services should be enabled. There is no Apple service called Tracking Services. Airplane Mode would turn off GPS (and Location Services), but it needs to be enabled, not disabled.

Question 14

Which GPS component is responsible for triangulation?

A. Satellites

B. Ground control network

C. Receiver

D. All three combined

Answer 14

C. Receiver

It’s the receiver’s job to perform triangulation to determine its position based on data received from the satellites. Satellites send signals to the GPS receiver to help it determine its location. The ground control network monitors the status of the satellites and signal strength.

Question 15

You are configuring NFC for a smartphone user. He is concerned about the maximum data transfer rates of the technology. What is the fastest data transfer speeds currently supported by NFC?

A. 106 Kbps

B. 212 Kbps

C. 424 Kbps

D. 636 Kbps

Answer 15

C. 424 Kbps

The fastest NFC can transfer data is 424 Kbps. The three speeds supported by NFC are 106 Kbps, 212 Kbps, and 424 Kbps. NFC does not currently support 636 Kbps.

Question 16

You are explaining various connection types to new corporate smartphone and tablet users. Which of the following best describes the concept of tethering?

A. When a cellular device uses another device’s Wi-Fi connection to get on the Internet

B. When a Bluetooth device uses another device’s Wi-Fi connection to get on the Internet

C. When a Wi-Fi device uses another device’s Bluetooth connection to get on the Internet

D. When a Wi-Fi device uses another device’s cellular connection to get on the Internet

Answer 16

D. When a Wi-Fi device uses another device’s cellular connection to get on the Internet

Tethering is when a Wi-Fi enabled device attaches to a cellular device to get on the Internet. The cellular device is usually called a mobile hotspot.

Question 17

Which of the following is the operating system used by Apple Watch?

A. watchOS

B. iOS

C. macOS

D. AppleOS

Answer 17

A. watchOS

Apple created a new OS for its watch called watchOS. It’s very similar to iOS but designed for the smaller screen. macOS is Apple’s desktop OS, and there is no current AppleOS.

Question 18

What is the number of active satellites used by GPS?

A. 12

B. 24

C. 30

D. 36

Answer 18

B. 24

GPS uses 24 satellites. There are 32 GPS satellites in space, but the extra 8 are backups.

Question 19

Which of the following devices was the first commercial tablet computer in the marketplace?

A. Microsoft Surface Pro

B. Tablet PC

C. iPad

D. GRiDPad

Answer 19

D. GRiDPad

Released in 1989, GRiDPad was the first commercial tablet. None of the others were released until at least the year 2000.

Question 20

The type of display that Google Glass presents to its users is called what?

A. Retinal projection

B. VR

C. AR

D. OCR

Answer 20

C. AR

Google Glass uses augmented reality (AR) technology, which is common on heads-up types of displays. Virtual reality (VR) is provided by devices such as Oculus Rift. There is no retinal projection display used with mobile devices. OCR stands for optical character recognition, which is not a technology covered in this chapter or on the A+ exam. (It’s used to translate documents after they’ve been scanned in on a scanner.)