Chapter 18 Flashcards
change in velocity, which is a function of speed and direction—of an object.p847
Accelerometer
A gyroscope is a sensor that detects rotation around any of three axes, known as roll, pitch, and yaw. p847
Gyroscope
a gyroscope would sense a change in what?p847
pitch
the relative and absolute positioning of your device from the viewpoint of the planet and space, is an important capability that allows effective navigation and access to personalized services and security features. p848
Geolocation
allows a device to sense magnetic fields, such as the one our planet exhibits at the magnetic north pole. p848
Magnetometer
To detect the absolute position of a device with respect to the manmade latitude and longitude markings on the surface of the earth, triangulation is required. p848
Global Positioning System
The Russian form of GPS, known as.p848
Global Navigation Satellite System (GLONASS)
uses similar information to add location information to various forms of media, such as photographs taken with the device and messages sent with the device. p849
Geotagging
Any device that, for input, relies on the user pressing against and flexing the outermost layer of material covering the screen occasionally requires the recalibration of the user’s interface with the device’s touch sensors. p849
Screen Calibration
The need for recalibration is expected in devices that use a resistive technology to detect touch. p849
Resistive Touchscreens
Such devices are built using two layers of sturdy panels separated by an air pocket. One panel is flexible, usually made of plastic, and the other panel is often rigid, usually made of glass. Both panels are coated with what?p850
indium tin oxide (ITO)
the same two layers of ITO as used with resistive screens are placed between two pieces of glass, resulting in a very smooth, silky surface to the touch. p850
Capacitive Touchscreens
Apple’s iMessage allows _________ over WiFi between capable devices running iOS version 5 and higher or Mac OS X Mountain Lion (10.8) and higher. p853
instant messaging
(SIP)stands for what?p853
Session Initiation Protocol (SIP)
the mechanism used for standard cellular instant messaging, and does not count against your monthly messaging limits. p853
Short Message Service (SMS)
that use Bluetooth for data-link transport are specified by IEEE 802.15.p863
Wireless personal area networks (WPANs)
Used to communicate between client and server and between servers to send mail to a recipient’s account.p883
Simple Mail Transfer Protocol (SMTP)
TCP 25
Used to communicate between a client and the client’s mail server to retrieve mail with little interaction.p883
Post Office Protocol (POP)
TCP 110
Used to communicate between a client and the client’s mail server to retrieve mail with extensive interaction.p883
Internet Message Access Protocol (IMAP)
TCP 143
(SSL)stands for what?p883
Secure Sockets Layer (SSL)
(TLS)stands for what?p883
Transport Layer Security (TLS)
SMTP with SSL
SMTP with TLS
IMAP with SSL/TLS
POP with SSL/TLS What are the TCP port numbers
465
587 TCP port numbers
995
993
Gmail Outbound on SMTP with SSL or TLS
Inbound on IMAP with SSL
Inbound on POP with SSL
smtp .gmail .com
imap .gmail .com
pop .gmail .com
Live (no IMAP) Outbound on SMTP with SSL (port 25) or TLS
Inbound on POP with SSL
smtp .live .com
pop3 .live .com
Yahoo Outbound on SMTP with SSL
Inbound on IMAP with SSL
Inbound on POP with SSL
smtp .mail .yahoo .com
imap .mail .yahoo .com
pop .mail .yahoo .com
(OWA)stands for what?p890
Outlook Web App (OWA)
The app allows the device to be controlled remotely to lock it, play a sound (even if audio is off), display a message, or wipe it clean.p899
Find My iPhone
Find My iPhone feature is turned on in your missing device you have three options for how to view the location what is it.p902
two-dimensional map, satellite, and a hybrid version
(PRL)stands for what?p909
preferred roaming list (PRL)
HTC created an early touchscreen software interface called what? p912
TouchFLO
___________is the act of mirroring all unique changes and additions from each device to the other. p913
Synchronization
the most common types of data to be synchronized by all such utilities: p913
Contacts Apps Email Photos Music Videos