342. Q U I Z NO. 14

Q U I Z   NO. 14

1.      A master Bluetooth device can communicate with a maximum of seven devices in a piconet

2.      Bluetooth is a packet-based protocol with a master-slave structure.

3.      Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices,

4.      using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz

5.      Bluetooth can connect several devices, overcoming problems of synchronization

6.       Bluetooth is managed by the Bluetooth Special Interest Group, which has more than 16,000 member companies.

7.      To be marketed as a Bluetooth device, it must be qualified to standards defined by the SIG [Special Interest Group]

8.      Bluetooth uses a radio technology called frequency-hopping spread spectrum up to 79 bands- 1 MHz each.

9.      A master Bluetooth device can communicate with a maximum of seven devices in a piconet

10.  One master may communicate with up to 7 slaves in a piconet

11.  The effective range varies due to propagation conditions, material coverage, production sample variations, antenna configurations and battery conditions.

12.  Wi-Fi is intended as a replacement for cabling for general local area network access in work areas

13.  Wi-Fi uses the same radio frequencies as Bluetooth, but with higher power, resulting in higher bit rates and better range from the base station.

14.  Bluetooth exists in many products, such as the iPhone, iPad, iPod Touch, Lego Mindstorms NXT, PlayStation 3, PSP Go, telephones, the Nintendo Wii, and some high definition headsets, modems, and watches.

15.  The specification is based on frequency-hopping spread spectrum technology.

16.  Today it has a membership of over 16,000 companies worldwide.

17.  Bluetooth Special Interest Group was established by Ericsson, IBM, Intel, Toshiba and Nokia, and other companies

18.  All versions of the Bluetooth standards are designed for downward compatibility.

19.       Wi-Fi allows cheaper deployment of local area networks (LANs).

20.       Also spaces where cables cannot be run, such as outdoor areas and historical buildings, can host wireless LANs.

21.       Products designated as "Wi-Fi Certified" by the Wi-Fi Alliance are backwards compatible.

22.       Unlike mobile phones, any standard Wi-Fi device will work anywhere in the world.

23.       Wi-Fi Protected Access encryption (WPA2) is considered secure, provided a strong passphrase is used.

24.       Power saving mechanisms (WMM Power Save) extend battery life.

25.  Windows 9 a natural progression to fully support the 128-bit architecture.