Welcome to ExamTopics
ExamTopics Logo
- Expert Verified, Online, Free.
Mail Us[email protected]
Menu
Cwnp Discussions
exam questions

Exam CWNA-107 All Questions

View all questions & answers for the CWNA-107 exam
Go to Exam

Exam CWNA-107 topic 1 question 92 discussion

Actual exam question from CWNP's CWNA-107
Question #: 92
Topic #: 1
[All CWNA-107 Questions]

When using a spectrum analyzer to look for non-Wi-Fi interference sources, you notice significant interference across the entire 2.4 GHz band (not on a few select frequencies) within the desktop area of a users workspace, but the interference disappears quickly after just 2 meters. What is the most likely cause of this interference?

  • A. USB 3 device in the user’s work area
  • B. Bluetooth devices in the user’s work area
  • C. Excess RF energy from a nearby AP
  • D. Unintentional radiation from the PC power supply
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
Reference -
https://www.reddit.com/r/electronics/comments/2i2s76/is_the_emf_of_a_pc_without_a_case_much_higher/?st=jdr0fxpm&sh=1a61beda
by VladeDivac at Dec. 15, 2020, 3:28 a.m.

Comments

Chosen Answer:
This is a voting comment (?) , you can switch to a simple comment.
Switch to a voting comment New
Submit Cancel
EAG
3 years, 6 months ago
Option A is the correct answer, as USB 3.0 devices can create significant RF interference in the 2.4GHz band. (See CWNA-107 study guide, page 270) Option B is wrong because while Bluetooth devices are a source of non-WiFi interference, their range goes beyond 2 metres, thus whatever interference they might have caused would go far beyond the user's workspace and not disappear after just 2 metres away from his desktop area. Option C is wrong in the sense that RF energy coming from an AP, though possibly an interference source, cannot be regarded as a non-WiFi interference as the AP is a WiFi device. As for Option D, I'd like to think that the concept of unintentional radiation is related to antennas and similar devices, and has no connection to Electric power supply.
upvoted 2 times
...
VladeDivac
3 years, 11 months ago
I think all of them could fit as potential answers.
upvoted 2 times
...

Get IT Certification

Unlock free, top-quality video courses on ExamTopics with a simple registration. Elevate your learning journey with our expertly curated content. Register now to access a diverse range of educational resources designed for your success. Start learning today with ExamTopics!

Start Learning for free
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel