Exam (elaborations)
OMIS 660 Final Exam questions with complete solutions
- Course
- Institution
OMIS 660 Final Exam questions with complete solutions
[Show more]
Content preview
OMIS 660 Final ExamWireless network standards operate at ______? - correct answer ✔✔The data link layer
Wireless network standards are ________ standards. - correct answer ✔✔OSI
Wi-Fi Standards come from the ________ Working Group. - correct answer ✔✔802.11
We use the terms Wi-Fi and ________ interchangeably in this book. - correct answer ✔✔802.11
Wireless access points typically link wireless clients to ________. - correct answer ✔✔Servers on the
wired network.
Compared to wired transmission, propagation problems in radio transmission are __________. - correct
answer ✔✔Worse
Wireless radio transmission speed is usually measured in terms of __________. - correct answer
✔✔Frequency
Frequency is measured in terms of ________. - correct answer ✔✔Hertz
Radio transmission is measured in terms of _________. - correct answer ✔✔Frequency (Check)
The other wireless device is far away in a known direction. It would be better to use __________. -
correct answer ✔✔Dish Antenna
A cellular telephone uses a(n) ________. - correct answer ✔✔Omni-directional Antenna
,At 10 meters, a signal has a strength of 100 mW. About how strong will it be at 40 meters? - correct
answer ✔✔Review Page 216
What propagation problem is especially bad in moist air? - correct answer ✔✔Absorptive Attenuation
What propagation problem becomes worse as there is a large dense object between the sender and
receiver? - correct answer ✔✔Shadow Zones
What propagation problem becomes worse as frequency increases? - correct answer ✔✔Neither inverse
square law attenuation, NOR electromagnetic interference
Correct is Absorptive Attenuation and Dead (Shadow) Zone
The frequency spectrum extends ________. - correct answer ✔✔To Infinity
The most serious problem with wireless transmission in WLANs is _________. - correct answer
✔✔Multipath Interference
2.4 GHz and 5 GHz are _______. - correct answer ✔✔Service Bands (CHECK)
To handle multiple conversations in radio transmission, you normally use multiple ________. - correct
answer ✔✔Channels
Signals in a transmission usually __________. - correct answer ✔✔Spread over a range of frequencies
A channel extends from 55 MHz to 60 MHz. Its bandwidth is __________. - correct answer ✔✔None of
the answers listed ....
Correct is 5 MHz.
, To transmit very rapidly in RADIO, you need ___________. - correct answer ✔✔Wide Bandwidth
Channels with wide bandwidths are called _________ channels. - correct answer ✔✔Broadband
802.11 standards are being developed to work in the _________ unlicensed band. - correct answer
✔✔Both 2.4 GHz and 5 GHz (CHECK)
To transmit data very rapidly, you would want a _________ channel. - correct answer ✔✔Broadband
The 2.4 GHz band supports ________ possible non-overlapping 20 MHz channel(s). - correct answer
✔✔3
Companies are moving to the 5 GHz band because there is _________ than in the 2.5 GHz band. - correct
answer ✔✔More bandwidth
The 5 GHz band usually supports about _______ non-overlapping 20 MHz channel(s). - correct answer
✔✔12
Spread spectrum transmission is used in WLANs because ___________. - correct answer ✔✔It is
required by regulators.
Keep in mind stronger security is NOT a benefit
Spread spectrum transmission is used in WLANs for __________. - correct answer ✔✔More reliable
transmission
WLANs normally use ___________. - correct answer ✔✔Unlicensed Bands
In unlicensed bands, ___________. - correct answer ✔✔You can use radios wherever you please
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now