Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Copper Mountain Technologies (VNA) - RF Cafe

Exodus Advanced Communications Best in Class RF Amplifier SSPAs

Rigol DHO1000 Oscilloscope - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Innovative Power Products Couplers

Emerging Wireless Technologies and the Future Mobile Internet
Answers to RF Cafe Quiz #39

RF Engineering Quizzes - RF CafeAll RF Cafe Quizzes make great fodder for employment interviews for technicians or engineers - particularly those who are fresh out of school or are relatively new to the work world. Come to think of it, they would make equally excellent study material for the same persons who are going to be interviewed for a job. Bonne chance, Viel Glück, がんばろう, buena suerte, удачи, in bocca al lupo, 행운을 빕니다, ádh mór, בהצלחה, lykke til, 祝你好運. Well, you know what I mean: Good luck!

Click here for the complete list of RF Cafe Quizzes.

Note: Some material based on books have quoted passages.

Return to RF Cafe Quiz #39

RF Cafe Featured Book - Emerging Wireless Technologies and the Future Mobile InternetThis quiz is based on the information presented in Emerging Wireless Technologies and the Future Mobile Internet, by Dipankar Raychaudhuri & Mario Gerla. Published by Cambridge university Press. Note: Some of these books are available as prizes in the monthly RF Cafe Giveaway.

1.  According to a NSF Wireless Mobile Planning Group report, how is the usage scenario for Individual Wireless Devices Interfacing with the Internet classified?

b)  Mobile Computing.

This is designated "Scenario A," and includes cellular phones, PDAs, media players, digital cameras, or some type of combination consumer device.  (see page 11)

2.   According to a NSF Wireless Mobile Planning Group report, how is the usage scenario for Constellation of Wireless Devices classified?

a)  Ad hoc Nets

This is designated "Scenario B," and is motivated by a variety of settings in which multiple radio devices me be in close physical proximity and can collaborate by forming an ad hoc network.  (see page 11)

3.   According to a NSF Wireless Mobile Planning Group report, how is the usage scenario for Pervasive Systems and Sensors Networks classified?

c)  Server Nets

This is designated "Scenario C," and refers to a broad class of systems involving embedded wireless devices connected to the Internet.  (see page 12)

4.  What does the IEEE 802.11 WAVE Task Group specification cover?

b)  Data exchange between high speed vehicles and roadside infrastructure

Wireless Access in Vehicular Environments (WAVE) uses the licensed 5.9 GHz ITS (Intelligent Transportation Systems) band.  (see page 23)

5.  What is the function of a protocol's MAC layer?

d)  Brokering of channel access between contending devices

The Media Access Control layer's job is to facilitate the most efficient communications between connected devices  (see page 58)

6.  A Delay/Disruption Tolerant Network (DTN) might use what part of the network?

d)  All the above

In the DTN system, any fixed or mobile platform equipped with proper hardware can act as a transponder to help form continuous wireless communications.  (page 71)

7.  What is the name given to a scheme that uses interface components to translate data at the boundaries of large networks?

c)  Gluenet

The term Gluenet refers to using all components of the DTN (see Q6) to provide coverage at teh boundaries of major cells.  (see page 84)

8.  Which of these components might make up a Wireless Sensor Network (WSN)?

d)  All the above

Wireless Sensor Networks are an important emerging class of embedded distributed systems that consist of low-power devices integrating computation, sensing, and wireless communications.  (see page 125)

9.  What is a major limitation of Software Defined Radio (SDR) in cognitive radio networks?

a)  Latency

The significant delay and jitter between radio hardware and the host CPU will impact a host-based cognitive radio network protocol's ability to react quickly to the spectrum, and for the MAC layer to precisely control packet timing.  (see page 182)

10.  Which factor(s) is(are) unique to wireless environments versus wired environments?

Wireless networks experience data transfer issues because of a continuously varying environment.  (see page 287)

Innovative Power Products Couplers
KR Electronics (RF Filters) - RF Cafe

Windfreak Technologies Frequency Synthesizers - RF Cafe