01 - Mobile Devices

Question 1

What kind of hard drives are used by laptops? (Select all that apply)

A. SSD
B. M.2
C. Magnetic disk
D. DVD-ROM

Answer 1

A, B, and C.

Solid-state drives (SSDs), M.2 drives, and magnetic disk drives are all found on laptops. Which drive the laptop uses will depend on its age and whether or not it has been upgraded.

Question 2

What is the module format for a stick of SODIMM DDR4 RAM?

A. 200-pin
B. 204-pin
C. 260-pin
D. 1.8-inch

Answer 2

C.

DDR4 SODIMM modules have 260 pins.

DDR (known as DDR1) and DDR2 are 200-pin.

DDR3 is 204-pin. 1.8-inch is the size associated with smaller hard drives used in some laptops.

Question 3

You just added a second memory module to a laptop. However, after rebooting the system, the OS reports the same amount of memory as before. What should you do next?

A. Replace both memory modules.
B. Run Windows Update.
C. Replace the motherboard.
D. Reseat the laptop memory.

Answer 3

D.

The next step you should take is to reseat the memory. SODIMMs can be a bit tricky to install. They must be firmly installed, but you don’t want to press too hard and damage any components.

Question 4

Which of the following are ways that a laptop can communicate with other computers? (Select all that apply.)

A. Bluetooth
B. WLAN
C. DC jack
D. Cellular WAN

Answer 4

A, B, and D.

Some of the methods that laptops use to communicate with other computers include: Bluetooth, WLAN, and cellular WAN wireless connections, plus wired connections like Ethernet (RJ45) and, for older laptops, dial-up (RJ11).

Question 5

Which of the following are possible reasons that a laptop’s keyboard might fail completely?
(Select the two best answers.)

A. A key is stuck.
B. A ribbon cable is disconnected.
C. The user spilled coffee on the laptop.
D. The keyboard was disabled in the Device Manager.

Answer 5

B and C.

A laptop’s keyboard could fail due to a disconnected or loose keyboard ribbon cable. It could also fail if a user spilled coffee on the laptop, by being dropped on the ground, and so on.

Question 6

A user doesn’t see anything on his laptop’s screen. He tries to use AC power and thinks that the laptop is not receiving any. Which of the following are two possible reasons for this? (Select the two best answers.)

A. He is using an incorrect AC adapter.
B. The AC adapter is not connected to the laptop.
C. Windows won’t boot.
D. The battery is dead.

Answer 6

A and B.

An incorrect adapter will usually not power a laptop. The adapter used must be exact. And of course, if the laptop is not plugged in properly to the adapter, it won’t get power.

Question 7

One of your customers reports that she walked away from her laptop for 30 minutes. When she returned, the display was very dim. She increased the brightness setting and moved the mouse but to no effect. What should you do first?

A. Replace the LCD screen.
B. Check the operating system for corruption.
C. Connect an external monitor to verify that the video card works.
D. Check whether the laptop is now on battery power.

Answer 7

D.

It could be that the laptop is now on battery power, which is usually set to a dimmer display and shorter sleep configuration. This indicates that the laptop is not getting AC power from the AC outlet for some reason. The battery power setting is the first thing you should check; afterward, start troubleshooting the AC adapter, cable, AC outlet, and so on.

Question 8

Which are the most common laptop hard drive form factors? (Select two.)

A. 5.1
B. 2.5
C. 7.1
D. 1.8

Answer 8

B and D.

The bulk of the hard drives in laptops are 2.5 inches wide, though ultra-small laptops and other small portable devices might use a hard drive as small as 1.8 inches. 5.1 and 7.1 refer to speaker surround sound systems, not hard drive form factors.

Question 9

You are helping a customer with a laptop issue. The customer said that two days ago the laptop was accidentally dropped while it was charging. You observe that the laptop will not turn on and that it is connected to the correct power adapter. Which of the following is the most likely cause?

A. The battery  
B. The power adapter  
C. The hard drive  
D. The DC jack  
E. The BIOS/UEFI

Answer 9

D.

The DC jack was probably damaged when the laptop was dropped. That’s because it was plugged in (charging) and it probably fell on the plug that connects to the DC jack (which is easily damaged on many laptops, by the way).

Question 10

Which kind of video technology do most laptop LCDs use?

A. TFT active matrix
B. Passive matrix
C. OLED
D. MAC ID

Answer 10

A.

TFT active-matrix displays are the most common in laptops that use LCDs.

Question 11

Which of the following uses an organic compound that emits light?  
A. TFT active matrix  
B. IPS  
C. OLED  
D. LCD  
E. LED

Answer 11

C.

OLED (organic light emitting diode) displays use an organic compound or film that emits light. TFT active matrix implies LCD, and neither of them uses organic compounds the way OLED does.

Question 12

Which of the following are two possible reasons why a laptop’s LCD suddenly went blank with no user intervention? (Select the two best answers.)

A. Damaged inverter
B. Damaged LCD
C. Burned-out backlight
D. Incorrect resolution setting

Answer 12

A and C.

A damaged inverter or burned-out bulb could cause a laptop’s display to go blank. You can verify whether the LCD is still getting a signal by shining a flashlight at the screen. A damaged LCD usually works to a certain extent and will either be cracked, have areas of the Windows interface missing, or show other signs of damage.

Question 13

Which of the following allows us to access a WLAN?

A. LED  
B. Webcam  
C. Digitizer  
D. Stylus  
E. Wi-Fi card

Answer 13

E.

A Wi-Fi card, also known as a Wi-Fi network adapter, allows us to connect to a WLAN (wireless local area network), which is essentially another name for a Wi-Fi network.

Question 14

Which of the following keys should you press to enable a secondary display on a laptop?
(Select the two best answers.)

A. Fn key  
B. Caps Lock key  
C. Num Lock key  
D. Special function key  
E. Insert key

Answer 14

A and D.

To enable a secondary, or external, display on a laptop you would use the Fn key (called the Function key) and a special function key

Question 15

When a user types, a laptop’s screen displays letters and numbers instead of only letters. What should you check first?

A. Fn key
B. LCD cutoff switch
C. Num Lock key
D. Scroll Lock key

Answer 15

C.

The Num Lock key can enable or disable the numeric keypad. This might be necessary if the user inadvertently turned it on or disconnected an external keyboard from the laptop. Some laptops require you to press Ctrl+Num Lock to enable or disable the numeric keypad.

Question 16

You are required to install an anti-theft solution for a customer’s laptop. Which of the following should you perform?

A. Install a docking station.  
B. Install a cable lock.  
C. Install Windows.  
D. Configure a password in the BIOS/UEFI.  
E. Use a port replicator.

Answer 16

B.

Install a cable lock to increase the security of a laptop and decrease the chances of theft.

Question 17

You are helping a project manager with a presentation using a laptop which feeds video to a projector. During your tests, the projector’s image begins to flicker. The laptop’s display does not have any problems. You attempt to change the resolution on the laptop, but the issue continues. Which of the following should you do next?

A. Change the projector settings.
B. Check the connectivity of the video cable.
C. Change the aspect ratio of the laptop.
D. Check the connectivity of the power cable.

Answer 17

B.

Check the connectivity of the video cable. If it is flickering, chances are that the cable is loose, or the cable’s quality is lacking. Screen flicker is more common with VGA cables, but it can happen with just about any connection.

Question 18

What are common hard drive sizes for laptops?

A. 5 Inch
B. 2.5 Inch
C. 1.8 Inch
D. 3.5 Inch

Answer 18

B. C.

2.5 and 1.8 inches are most common drive widths.

Question 19

What are common drive types used in laptops?

A. SATA
B. SSD
C. Magnetic Disk
D. Hybrid
E. M2 Drive

Answer 19

A, B, C, D, E

All of these drive types are common laptops.

Question 20

Which of the following keys should you press to enable a secondary display on a laptop? (Select the two best answers.)

A. Fn key  
B. Caps Lock key  
C. Num Lock key  
D. Special function key  
E. Insert key

Answer 20

A and D.

To enable a secondary, or external, display on a laptop you would use the Fn key (called the Function key) and a special function key (for example, F3 or F4, whichever one corresponds to screen switching).

Question 21

When a user types, a laptop’s screen displays letters and numbers instead of only letters. What should you check first?

A. Fn key
B. LCD cutoff switch
C. Num Lock key
D. Scroll Lock key

Answer 21

C.

The Num Lock key can enable or disable the numeric keypad.

Question 22

You are required to install an anti-theft solution for a customer’s laptop. Which of the following should you perform?

A. Install a docking station.  
B. Install a cable lock.  
C. Install Windows.  
D. Configure a password in the BIOS/UEFI.  
E. Use a port replicator.

Answer 22

B.

Install a cable lock to increase the security of a laptop and decrease the chances of theft.

Question 23

You are helping a project manager with a presentation using a laptop which feeds video to a projector. During your tests, the projector’s image begins to flicker. The laptop’s display does not have any problems. You attempt to change the resolution on the laptop, but the issue continues. Which of the following should you do next?

A. Change the projector settings.
B. Check the connectivity of the video cable.
C. Change the aspect ratio of the laptop.
D. Check the connectivity of the power cable.

Answer 23

B.

Check the connectivity of the video cable. If it is flickering, chances are that the cable is loose, or the cable’s quality is lacking.

Question 24

Which of the following is not a mobile device?

A. Tablet
B. Smartphone
C. Desktop PC
D. E-reader

Answer 24

C.

The desktop PC is not a mobile device. It is a stationary computer that is meant to stay at a person’s desk.

Question 25

Which type of memory do most mobile devices store long-term data to?

A. LPDDR4
B. SATA magnetic disk
C. SATA SSD
D. Solid-state flash memory

Answer 25

D.

Most mobile devices store their long-term data to solid-state flash memory.

Question 26

You have been tasked with connecting a wireless earpiece to a smartphone. Which technology would you most likely use?

A. Wi-Fi
B. NFC
C. 3.5 mm
D. Bluetooth

Answer 26

D.

When connecting an earpiece (those little cricket-looking devices) to a smartphone, you would most likely use Bluetooth—just remember that most of them have a 30-foot range (10 meters).

Question 27

You have been tasked with setting up a device for a salesperson’s vehicle. It should be able to display maps and give directions to the person while driving. Which of the following devices would perform these tasks? (Select the two best answers.)

A. GPS  
B. Smart camera  
C. Smartphone  
D. E-reader  
E. VR headset

Answer 27

A and C.

A standalone GPS device or a smartphone (equipped with a GPS app) would do the job here. Both can display maps and give directions to a person while driving.

Question 28

Which type of charging connector would you find on an iPad?

A. Micro-USB
B. Lightning
C. Thunderbolt
D. IP68

Answer 28

B.

The Lightning connector is one of Apple’s proprietary charging and synchronization connectors used by iPads and iPhones, although Apple also uses USB-C.

Question 29

You are required to add long-term storage to a smartphone. Which type would you most likely add?

A. DDR4  
B. microSD  
C. LPDDR4  
D. SSD  
E. SIM

Answer 29

B.

You would most likely add a microSD card (if the smartphone has a slot available for add-on or upgrading). This is the most common method for adding long-term storage.

Question 30

The organization you work for allows employees to work from their own mobile devices in a BYOD manner. You have been tasked with setting up the devices so that they can “beam” information back and forth between each other. What is this known as?

A. Mobile hotspot  
B. IoT  
C. CYOD  
D. IR  
E. NFC

Answer 30

E.

“Beaming” the information back and forth can be accomplished in a couple of ways, primarily by using near field communication (NFC). This can only be done if the devices are in close proximity to each other. NFC is commonly used for contactless payment systems.

Question 31

Which of the following can be useful in areas where a smartphone has cellular access but the PC (or laptop) cannot connect to the Internet?

A. Proprietary vendor-specific connector
B. Accessories
C. IP codes
D. Tethering

Answer 31

D.

Tethering can allow a desktop computer or laptop to share the mobile device’s Internet connection. Tethering functionality can be very useful in areas where a smartphone has cellular access but the PC/laptop cannot connect to the Internet.

Question 32

Which of the following connections require a username, password, and SMTP server? (Select the two best answers.)

A. Bluetooth connection  
B. Wi-Fi connection  
C. POP3 connection  
D. Exchange connection  
E. IMAP connection

Answer 32

C and E.

POP3 and IMAP e-mail connections require an incoming mail server (either POP3 or IMAP) and an outgoing mail server (SMTP).

Question 33

When manually configuring a Wi-Fi connection, which step occurs after successfully entering the SSID?

A. Select POP
B. Check whether the device is within range of the WAP.
C. Enter a passcode for the network.
D. Scan for networks.

Answer 33

C.

After you enter the SSID (if it’s correct) you would enter the passcode for the network.

Question 34

Which of the following allows other mobile devices to wirelessly share your mobile device’s Internet connection?

A. NFC
B. Airplane mode
C. IMAP
D. Mobile hotspot

Answer 34

D.

Mobile hotspot technology (sometimes referred to as Wi-Fi tethering) allows a mobile device to share its Internet connection with other Wi-Fi-capable devices.

Question 35

Which of the following identifies the user of the device?

A. IMSI ID
B. IMEI ID
C. S/MIME
D. VPN

Answer 35

A.

International Mobile Subscriber Identity (IMSI) or IMSI ID is used to identify the user of the device.

IMEI stands for International Mobile Equipment Identity and identifies the phone used. In other words, the IMEI ID identifies the device itself.

Question 36

Which of the following is the most common connection method when synchronizing data from a mobile device to a PC?

A. Wi-Fi
B. Bluetooth
C. USB
D. Lightning

Answer 36

C.

USB is the most common connection method used when synchronizing data from a mobile device to a PC.

Question 37

Which of the following is used to synchronize contacts from an iPad to a PC? (Select the best answer.)

A. Gmail
B. Google Play
C. iTunes
D. Sync Center

Answer 37

C.

PC users need iTunes to synchronize contacts and other data from an iPad to a PC.

Question 38

What is it known as when a user connects to several services using several apps but with only one username and password?

A. Android Auto  
B. SSO  
C. iTunes  
D. BT  
E. Exchange ActiveSync

Answer 38

B.

SSO (single sign-on) is a type of authentication where a user logs in once but is granted access to multiple services.

Question 39

True or False:
A DC jack is a laptop component that needs to
be soldered in place when installed.

Answer 39

True

A DC jack is a laptop component that needs to
be soldered in place when installed.

Demo of this here
https://www.youtube.com/watch?v=NwgnqyaCiSc

Question 40

A technician is troubleshooting a laptop. He decides to boot the computer into VGA mode from the ABOM. What is the default display resolution for this mode?

A. 1280 x 800
B. 1366 x 768
C. 640 x 480
D. 1920 x 1080

Answer 40

C

In addition, VGA provides a maximum resolution of 640 x 480 with a refresh rate of 60 Hz