Mobile Devices Objectives

In-Plane Switching (IPS)

uses crystals that rotate to be able to deliver color better color production at a wider range of viewing angles can support 170 degree horizontal and vertical viewing angles

thunderbolt

Thunderbolt is a connector type that can be used either as a display interface (like DisplayPort) or as a general peripheral interface (like USB 3). Thunderbolt 3 uses USB-C connectors.

Liquid Crystal Display (LCD)

Uses Liquid Crystal where the properties can change with the applicaiton of voltage

Gyroscope

an improved version of the basic accelerometer dectects. pitch (y), roll (x) and yaw (z) ex: flying game pulling the the phone close and away from you to move the plane up and down

Wireless Networks

comes in different types of wifi including wireless, a, b, g, n, ac, and ax slower on smaller devices than it is on larger devices due to the size of the antenna

Twisted Nematic (TN)

contains crystals that twist or untwist in response to the voltage being applied or removed Fast response time

Vertical alignment (VA)

crystals are tilted to be able to deliver color A VA display has a contrast ratio of two to three times better than a standard IPS display viewing angles are not as good as an IPS display response times are slower than IPS and TN

Accelerometer

is still the crucial component to measure the activity of the user. The data collected is then converted into steps and activity and from then into calories and sleep quality. also used in smatphones when changing the x and axis

Baseband

is the embedded operating system in the firmware of a smartphone or other cellular device. The baseband is changed or updated when a security update is needed. baseband would not be updated or changed based on your location.

SMTP

SMTP is used to send emails, not receive them. The simple mail transfer protocol (SMTP) is the protocol used to send mail between hosts on the Internet using TCP port 25

Pixel

Individual point on a screen inside of a display

TFT

Thin film Transistor is referred to as an LCD panel

3G

3G cellular technology is made up of two different technologies: HSPA+ and EV-DO. HSPA+ (Evolved High-Speed Packet Access) is a 3G standard used for GSM cellular networks and can support up to a theoretical download speed of 168 Mbps and a theoretical upload speed of 34 Mbps In the real world, though, HSPA+ normally reaches speeds around 20 Mbps. EV-DO (Evolution-Data Optimized) is a 3G standard used for CDMA cellular networks and can support up to 3.1 Mbps downloads.

Bluetooth card reader

A Bluetooth card reader can be used to capture the purchaser's credit card details. These Bluetooth card readers may support magnetic card reading capabilities (swiping a card), smart chip reading capabilities (chip and pin), or even NFC reading capabilities (Google Pay, Apple Pay, etc.). For example, in the United States, Square's mobile payment terminal is popular for small businesses and entrepreneurs. By capturing the credit card details electronically (instead of just typing them in), the merchant pays a lower payment processing fee and saves on credit card fees charged when a customer makes a purchase

USB hub

A USB hub is a device that connects to a USB port to allow additional USB devices to be connected to the PC, essentially increasing the number of USB ports available.

Docking station

A docking station is a sophisticated type of port replicator designed to provide additional ports (such as network or USB) and functionality (such as expansion slots and drives) to a portable computer when used at a desk

Memory card reader

A memory card reader is a device containing one or more slots to accommodate reading (and writing) memory cards. A memory card is a flash drive typically used for digital cameras and smartphones

port replicator

A port replicator is a simple device to extend the range of ports (for example, USB, DVI, HDMI, Thunderbolt, network, and so on) available for a laptop computer when it is used at a desk.

Nathan recently purchases a wearable fitness tracker to count the number of steps he is taking each day. Which of the following technologies is used to determine how many steps he takes each day?

Accelerometer Most wearable fitness devices come with a 3-axis accelerometer to track movement in every direction. Some more advanced trackers will also use a gyroscope to measure the orientation and rotation of the device.

On Saturdays, your best friend goes to the local farmer's market to sell his homemade craft root beer. He wants to add the ability to take credit card payments from customers on his mobile phone. Which of the following devices should he purchase and configure?

Bluetooth Card Reader

Which of the following cellular technologies was not widely used outside of the United States?

CDMA

DB-9

DB-9 is a type of serial port connector used on legacy desktops and laptops.

You work as a PC Technician for a real estate company. The company has decided to use laptops instead of desktops in the office so that the real estate agents can easily take their laptops with them when they leave to show properties for sale. You want to create an easy solution for the agents to quickly connect an external monitor, keyboard, mouse, a wired network connection, and an additional hard drive for storage to the laptop whenever they come back into the office. Unfortunately, the laptops used by the agents don't have a built-in wired network connection. Which type of device should you choose to provide all the functionality above? Thunderbolt Docking station Port replicator USB 4-port hub

Docking Statiion

Organic LED (OLED)

Each pixel has its own separate LED that provides the light does not require backlight display can be thinner, lighter, and much less power intensive leading to longer battery lives OLEDs can be made from plastic OLEDs can be folded, rolled up, or manipulated to create different shapes and sizes of displays

4G

G cellular technology is made up of LTE and LTA-A. Long Term Evolution (LTE) is a packet data communications specification providing an upgrade path for both GSM and CDMA2000 cellular networks. LTE has a theoretical speed of 150 Mbps and a real-world speed of around 20 Mbps. LTE Advanced (LTE-A) has a theoretical speed of 300 Mbps and a real-world speed of around 40 Mbps.

HTTPS

HTTPS is used for web browsing l used to send mail between hosts on the Internet using TCP port 25. The hypertext transfer protocol secure (HTTPS) is a secure protocol used to provide web content to browsers using SSL/TLS encryption over port 443.

PRI

The preferred roaming index (PRI) is an index that works with the PRL to provide the best data/voice quality to a phone while roaming

PRL

The preferred roaming list (PRL) is a database built by CDMA service carriers to indicate which radio bands should be used when connecting to a cell tower contains all the information about different cellular towers.

IMAP

IMAP does not remove the mail from the server when the client connects but instead maintains a copy on the server indefinitely until the user forces it to be deleted. The internet message access protocol (IMAP) is a TCP/IP application protocol that provides a means for a client to access email messages stored in a mailbox on a remote server using TCP port number 143 messages persist on the server after the client has downloaded them. IMAP also supports mailbox management functions, such as creating subfolders and access to the same mailbox by more than one client at the same time

Infrared

Infrared (IR) was a wireless networking standard supporting speeds up to about 4 Mbps with a direct line of sight for communications. Infrared sensors are used in mobile devices and with IR blasters to control appliances. While infrared (IR) used to be commonly used to connect wireless mice and keyboards to a laptop in the 1990s, it has fallen out of favor in the last 10-15 years since Bluetooth is more reliable and does not require a direct line of sight between the device and the laptop

Cold Cathode Fluorescent Lamp (CCFL)

Lamp that sits behind the diplay and lights up the liquid crystal display to show the colors and images properly on the screen requires AC voltage

NFC

Near field communications (NFC) is a standard for peer-to-peer (2-way) radio communications over very short (around 4") distances that facilitate contactless payment and similar technologies

Cellular

Network that allows to connect to the internet using cellular radio inside the handset and connect to a network service provider

Light Emitting Diode (LED)

Newer form of light that uses direct current (DC) the use of LEDs uses less power, leading to longer battery life and better performance

You have been asked to set up the email on a corporate laptop. The employees of Dion Training are only allowed to receive their email on one device. The email should be removed from the server's mailbox whenever the client connects to the server to download the messages. Which of the following mail protocols should you configure to allow an employee to receive their mail on their laptop and meet these requirements? IMAP HTTPS POP3 SMTP

POP3 3 because the mail is downloaded to the device and removes mail from the server's mailbox by default.

what is used when a CDMA smartphone attempts to connect to the cellular network while traveling?

PRL PRI

CDMA

The code division multiple access (CDMA) communication standard for cellular radio communications and data transfer uses a method of multiplexing a communications channel using a code to key the modulation of a particular signal CDMA was only popular in the United States with a few providers (Verizon and Sprint) uses electronic code

Difference between docking station and port replicator

The difference between a docking station and a port replicator is that a docking station can add additional capabilities beyond what is already integrated into the laptop whereas a port replicator can only reproduce the same ports that already exist on the laptop.

Digitizer

The digitizer is used to convert touch events to digital signals that can be interpreted as different types of input. The digitizer can be touched and inspected without taking apart the device. provides both input and output

Firmware

The firmware is a set of software instructions stored semi-permanently (embedded) on a hardware device. Modern types of firmware are stored in flash memory and can be updated more easily than legacy programmable Read-Only Memory (ROM) types firmware would not be updated or changed based on your location.

GSM

The global system for mobile communication (GSM) Cellular technology that takes the voice during the call and converts it into a digital format uses a sim card

Inverter

The inverter (also known as inverter board, screen inverter, or LCD inverter) is a part of the laptop's display assembly. The inverter is a small green board attached to the base of the LCD panel. In a laptop computer, the LCD screen relies on a backlight source to uniformly light up the screen, and the inverter acts as the power supply for this lighting source If the inverter is faulty, the display will be too dim to easily see without an external light source like a flashlight Converts AC power to DC power

POP3

The post office protocol (POP3) is a TCP/IP application protocol providing a means for a client to access email messages stored in a mailbox on a remote server over port 110. The server usually deletes messages once the client has downloaded them.