1001: Mobile Devices

Question 1

What is the biggest concern when replacing a laptop keyboard?

Answer 1

Damaging the data cable connector on the motherboard

Question 2

Other than size, what makes a 2.5” hard drive better for laptop use as opposed to a 3.5”?

Answer 2

Lower power consumption (half the power)

Question 3

What are the two types of LCD screens used in Laptops?

Answer 3

Passive and Active matrix

Question 4

Describe the functionality of a passive matrix LCD screen.

Answer 4

A row of transistors across the top and down the side of the screen send pulses down and across the screen, intersections tell each pixel what to display

Question 5

Why does an active matrix display generally provide higher display brightness and refresh rates?

Answer 5

It uses a separate transistor for each individual pixel

Question 6

What is the biggest drawback to Twisted Nematic (TN) LCD screens?

Answer 6

Color distortions when viewed from wide angles

Question 7

What improvements does In-plane Switching (IPS) provide over TN when talking about LCD screens?

Answer 7

Wider viewing angles and better color quality (but is more expensive and has slower response time)

Question 8

How are LED screens similar to LCD screens?

Answer 8

Both use liquid crystals to express the images on the screen

Question 9

Which provides better color representation: WLED screens or RGB LED screens?

Answer 9

RGB LED

Question 10

How do organic materials in an OLED screen emit light?

Answer 10

The organic materials respond to electrical currents

Question 11

Newer technologies allow for screens to be rolled up or display images while still being transparent. What type of screen technology is used in these screens?

Answer 11

OLED

Question 12

What is the purpose of an inverter?

Answer 12

Converts DC power to AC power that can be used by an LCD screen

Question 13

How is a digitizer implemented on a touchscreen device?

Answer 13

Digitizer is usually a thin, clear material on the surface of the screen

Question 14

Why would moving a laptop affect the strength of a wireless signal?

Answer 14

It changes the polarity of the antenna

Question 15

What is the difference between IMEI and IMSI in regards to mobile phone identification standards?

Answer 15

IMEI - identifies the physical device

IMSI - Identifies the SIM card

Question 16

What is the product release information PRI of a mobile device?

Answer 16

Connection between mobile device and the radio

Question 17

What is the preferred roaming list (PRL) of a mobile device?

Answer 17

List of radio frequencies stored in memory for use in various geographical areas

Question 18

What does the baseband chip do in a mobile phone?

Answer 18

Controls the GSM and 3G phone RF waves

Question 19

What is the name for cellular device updates that occur automatically?

Answer 19

Over the air

Question 20

What does it mean when an application requires mutual authentication?

Answer 20

When the server validates the client credentials and the client validates the server credentials

Question 21

What does it mean to synchronize all devices to a cloud server?

Answer 21

Cloud provides central location for data which can be accessed from all devices

Question 22

What are two methods of synchronizing mobile devices besides to a cloud service?

Answer 22

Synchronize to desktop and to automobile

Question 23

What size of specialty screwdriver is often needed to work on a notebook?

Answer 23

T-8 Torx

Question 24

What component of a hard drive will render it useless if damaged?

Answer 24

Signal Pins

Question 25

What is the maximum speed of a laptop card operating in the PCIe 2 mode?

Answer 25

3. 2 Gbps

1. 6 Gbps for PCIe mode 1

Question 26

What is type of dock allows you to connect/disconnect external peripherals quickly to a laptop?

Answer 26

Hot Dock

Question 27

What is the default PIN for connecting mobile devices through wireless connections? (i.e. Bluetooth)

Answer 27

0000