Quiz 5 Flashcards
802.11b frequency
2.4Ghz
802.11b data rate
11Mbps
802.11b range
120-400ft
802.11b info
nearing obsolescence
802.11a frequency
5Ghz
802.11a data rate
54 Mbps
802.11a range
100-300ft
802.11a info
widely ignored; 802.11b incompatible
802.11g freq
2.4 GHz
802.11g data rate
54 Mbps
802.11g range
120-400ft
802.11g info
widely deployed; 802.11b compatible
802.11n freq
2.4 or 5Ghz
802.11n data rate
248 Mbps
802.11n range
200-750ft
802.11n info
growing popularity; MIMO
MIMO
multiple-input, multiple-output
802.11ac freq
5Ghz
802.11ac data rate
433-1730Mbps
802.11ac range
unknown
802.11ac info
under deployment
WiMax 802.16 freq
11Ghz
WiMax 802.16 data rate
70Mbps
WiMax 802.16 range
31 miles
WiMax 802.16 info
commercial grade equipment
Bluetooth 802.15 freq
2.4Ghz
Bluetooth 802.15 range
30 ft / 300 ft
Bluetooth 802.15 data rate
1-24Mbps
Bluetooth 802.15 info
low power
Zigbee 802.15.4 freq
2.4 GHz, 868MHz
Zigbee 802.15.4 data rate
250 kbps, 20kbps
Zigbee 802.15.4 range
150ft
Zigbee 802.15.4 info
very low power
Ethernet range
unlimited
Ethernet address space
large address space
Ethernet max data rates
10Mbps, 100Mbps, 1000Mbps
Ethernet is ________ independent; _____, ____, _____
physical layer, wire, fiber optic, wireless
Ethernet data rate / latency
Ethernet has no guaranteed data rate or latency
What is the current data speed for Thunderbolt?
40Gbps
What are lanes?
Lanes refer to high speed differential connections
USB has _____ duplex, ______ data
half, differential
USB can drive up to ______ devices
127
USB uses ____ interface
plug and play
USB 1.1 data speed
1.5 or 12Mbps
USB 2.0 data speed
480Mbps
USB 3.0
3 Gbps
USB can use asynchronous or _______ transfers
isochronous
What does isochronous mean?
At regular time intervals
Which USB lines are a differential pair?
D+ (green), D- (white)
How many USB lines are there?
4: Power, GND, D+, D-
USB 2.0 Unit mA
100
USB 2.0 Max mA
500
USB 3.0 Unit mA
150
USB 3.0 Max mA
900