1 Flashcards
__________________ - anything on or in the human body
range - ________
Wireless body area network (WBAN) - 1
___________________ - peripheral devices, keyboards, headsets etc
most common protocol - _________
range - __________
Wireless personal network (WPAN)
bluetooth
10 meters
__________________ - Small home/ office network (SoHo)
most common protocol - _______________
range - ____________
Wireless local Network (WLAN)
Wifi
100 meters
_________ - city wide network
Uses - _________________
range - __________
WMAN Wireless metroplitan network
Lease lines maintained/provided by providers
30 miles
__________ - connects multiple WLANS togeather
combines/aggreagtes _____________ togeather
range - _________
WWAN World Wide Area network
lease lines
regoinal/global
___________ - sensors record or monitor environment
range - __________
WSN Wireless sensor network
usually short range
Major components
________ - input Device
Display
Major components
Storage - _______/________
Processing - __________
Storage - __________
Flash/Ram
Ram
Flash
Major components
___________ - houses vital system components
SoC
Major components
___________ - Lens, sensor, image processor
Camera
Major components
____________ - accelerometer, gyroscope, digital compass, ambient light sensor, proximity sensor
Sensors
Major components
___________ -allows a device to access into the radio frequency physical layer
Radio Adpater
________ is an increase of RF energy
Gain
________ uses a power source to increase RF energy
Active Gain
________ increase to RF energy WITHOUT power source
focuses a signal i.e ________
Passive Gain
antennas
______________ transmits in 360 degree coverage
- provides the _________ amount of gain ex. dipole
omnidirectional
least
______________ trsnamits in 120 degree or less coverage
- used on cell towers
Semi-directional
____________ Very tightly focused
provides the ________ gain
Highly directional
That are __-__ antennae’s on each cellullar device
____________ Antanae are Transmit/receive capable and hve __-__ per device
____________ Anntannae are recieve capable and have __-__ per device
Primary, 1-2
Diversity 1-2
Wifi/Bluetooth - _________________, ___/___ capable
Shared antennae Transmit/Receive capable
Gps - ______ capable only
Receive capable only
NFC/RFID - _______________
Coil of Wiring
Inductive Coupling ______________________
____|_____ capable
Energy flyting through
Tx/Rx capable
Confidentiality __________________________
encryption can _________________________
biggest risk to wireless communications “Unbound nature of RF”
Encryption can help but it can be broken
Availability - ________________________
hardest to secure, unintentional or intentional jamming
