Chapter 1 Flashcards
(45 cards)
Who invented ALOHANet when?
The University of Hawaii, the 1970s
ALOHANet is a building block of…
MAC layer
1st IEEE standards book released on which year?
1997
When IEEE802.11b is release? What is the maximum data rate?
1999, 11Mbps
What is SOHO?
Small-Office Home-Office
What is WECA?
Wireless Ethermet Compatibility Alliance
What is ITU-R?
International Telecommunication Union Radio Communication Sector
What is FCC?
Federal Communications Commission
What sorts of rules do ITU-R and FCC set?
Manage and Regulate Frequencies, Power levels, Transmission methods
What is the responsibility of IETF ?
Creating Internet standards
What is IETF?
Internet Engineering task force
Both licensed and unlicensed communications are regulated in the areas…
- Frequency
- Bandwidth
- Maximum power of the intentional radiator (IR)
- Maximum equivalent Isotropically Radiated Power (EIRP)
- Indoor/Outdoor use
- Spectrum sharing rules
Advantages of unlicensed spectrum use are …
- Free of use (with certain rules)
Disadvantages of unlicensed spectrum use are …
- Anyone can use the spectrum causing interference on the connection
Where do the FCC rules publieshed in?
Code of Federal Regulations (CFR) - Title 47, Telecommunications - Part 15 (Radio Frequency Devices)
Which region does Region-A in ITU-R belong to?
The Armerica - Inter-American Telecommunication Commission (CITEL)
Which region does Region-B in ITU-R belong to?
Western Europe - European Conference of Postal and Telecommunications Administrations (CEPT)
Which region does Region-C in ITU-R belong to?
Eastern Europe and Northern Asia - Regional Commonwealth in the field of Communications (RCC)
Which region does Region-D in ITU-R belong to?
Africa - African Telecommunications Union (ATU)
Which region does Region-E in ITU-R belong to?
Asia and Australia - Asia Pacific Telecommunity (APT)
What are the radio regulatory regions of ITU-R (geographically)?
Region 1 - Europe, Middle East, and Africa
Region 2 - Americas
Region 3 - Asia and Oceania
Which working group of IEEE responsible for Ethernet?
802.3
Which working group of IEEE responsible for WLAN?
802.11
IETF is a group of …
ISOC (Internet Society)
