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Question 18/52
As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What describes the rate at which this expansion happens?
Correct Answer: C
Explanation
The inverse square law states that the signal strength of an RF wave is inversely proportional to the square of the distance from the source. This means that as the distance from the transmitter increases, the signal strength decreases rapidly.
References: Wireless Network Administrator Official Study Guide, Chapter 3, page 64.
The inverse square law states that the signal strength of an RF wave is inversely proportional to the square of the distance from the source. This means that as the distance from the transmitter increases, the signal strength decreases rapidly.
References: Wireless Network Administrator Official Study Guide, Chapter 3, page 64.
- Question List (52q)
- Question 1: In a long-distance RF link, what statement about Fade Margin...
- Question 2: You are tasked with performing a throughput test on the WLAN...
- Question 3: Your manager asked you to locate a solution that allows for ...
- Question 4: What 802.11 PHY uses available space in very low frequency r...
- Question 5: What feature of 802.1 lax (HE) may impact design decisions r...
- Question 6: In which plane of the three networking planes is an access p...
- Question 7: What best describes WPA2 in relation to 802.11 wireless netw...
- Question 8: What statement about the beamwidth of an RF antenna is true?...
- Question 9: Which IEEE 802.11 physical layer (PHY) specification include...
- Question 10: What is the final step in an effective troubleshooting proce...
- Question 11: The BSA of an AP covers the area used by the sales and marke...
- Question 12: An 802.11 WLAN transmitter that emits a 50 mW signal is conn...
- Question 13: You are a small business wireless network consultant and pro...
- Question 14: You are troubleshooting a problem with interference from a n...
- Question 15: In a mesh BSS (MBSS), according to the 802.11 standard, what...
- Question 16: You are using a site survey tool for post-implementation val...
- Question 17: ABC Company is planning a point-to-multipoint outdoor bridge...
- Question 18: As an RF wave propagates through space, the wave front exper...
- Question 19: You are attempting to locate the cause of a performance prob...
- Question 20: When an ACK frame is not received by the transmitting STA, w...
- Question 21: 802. 11ax (HE) introduces Resource Units that can be used to...
- Question 22: What security option for 802.11 networks supports SAE and re...
- Question 23: A WLAN transmitter that emits a 50 mW signal is connected to...
- Question 24: A dual-band 802.11ac AP must be powered by PoE. As a class 4...
- Question 25: When considering data rates available in HT and VHT PHY devi...
- Question 26: What ID is typically mapped to an AP's MAC address if a sing...
- Question 27: An IEEE 802.11 amendment is in the daft state. What impact d...
- Question 28: What factor does not influence the distance at which an RF s...
- Question 29: A non-802.11 device is suspected of causing interference on ...
- Question 30: What common feature of MDM solutions can be used to protect ...
- Question 31: Which directional antenna types are commonly used by indoor ...
- Question 32: The requirements for a WLAN you are installing state that it...
- Question 33: What is appended to the end of each 802.11 data frame after ...
- Question 34: You must plan for POE in an office environment. Which one of...
- Question 35: When a client station sends a broadcast probe request frame ...
- Question 36: What security solution is deprecated in the 802.11 standard ...
- Question 37: Which unit of measurement, as formally defined, is an absolu...
- Question 38: An RF signal sometimes bends as it passes through some mater...
- Question 39: What 802.11 network configuration would result in multiple s...
- Question 40: You are implementing a multi-AP WLAN and fast secure roaming...
- Question 41: Option 43 must be configured to allow access points to locat...
- Question 42: When implementing PoE, what role is played by a switch?...
- Question 43: You are implementing a VHT-capable AP. Which one of the foll...
- Question 44: A POE device requires 47 W of power. What POE specification ...
- Question 45: You are installing an AP to be used by 27 laptops. All lapto...
- Question 46: You are performing a post-implementation validation survey. ...
- Question 47: What security solution is required to be used in place of Op...
- Question 48: In an 802.11 2.4 GHz system, what 22 MHz channels are consid...
- Question 49: 802. 11ax (HE) introduces Resource Units that can be used to...
- Question 50: An 802.11-based network uses an AP and has several connectin...
- Question 51: You are deploying a WLAN monitoring solution that utilizes d...
- Question 52: What is an advantage of using WPA3-Personal instead of WPA2-...
