As E could be seem correct, the key point is to reduce the coverage area (reducing the coverage area may apply to both 2.4 GHz and 5 GHz so i think wont be suitable for this question
The transmit power of an AP affects the wireless coverage area and the maximum achievable signal-to-noise ratio. Proper configuration of transmit power is important for ensuring a wireless network is operating at its highest capacity.
Reference: https://documentation.meraki.com/MR/Radio_Settings/Transmit_Power_and_Antenna_Configuration
AP coverage area or the cell size, according to this Cisco link, there are two ways to reduce the AP coverage area:
+ Tuning Cell Size with Transmit Power
+ Tuning Cell Size with Data Rates
Setting the transmit power level is a simplistic approach to defining the cell size, but that is not the only variable involved. The cell size of an AP is actually a compromise between its transmit power and the data rates that it offers.
To design a wireless LAN for best performance, you would most likely need to disable some of the lower data rates. For example, you could disable the 1, 2, and 5.5 Mbps rates to force clients to use higher rates and better modulation and coding schemes. That would improve throughput for individual clients and would also benefit the BSS as a whole by eliminating the slower rates that use more time on a channel.
This confused me but then I realised.
If you're using the 2.4GHz then it has a different coverage area to 5GHz anyways. Meaning that if the question is about reducing the coverage area, then this applies to the two WiFi bands SEPARATELY.
So the answer is B and D.
My Take on this would be that for Answer E while this would reduce your coverage area its not a Cisco "Stanard" method for doing so.
As has been highlighted in the Ciscopress links, Cisco Standard Methods would be
Reduce AP transmit power, which directly decreases the coverage area.
Increase minimum mandatory data rate, This effectively reduces the coverage area because devices farther away will not be able to connect.
it's true that higher data rates mean customers need closer proximity, but then it all comes down to the end user device's capabilities. 2 different users with different devices might be at the same distance, but only one can connect because his device's antenna has a higher gain or better specs in general. So... you are not really reducing coverage, you are enforcing better signal in general (which does not always necessarily translates into smaller radius)
A. Reducing bandwidth lowers the data rate but does not affect AP coverage.
B. Decreasing the AP's transmit power directly reduces coverage, requiring devices to be closer to the AP to maintain a connection. (*CORRECT*)
C. Fastlane is a QoS feature designed to optimize network performance by prioritizing latency-sensitive applications like voice and video. It does not impact coverage.
D. While reducing bandwidth might affect the number of users connecting to the network, AP coverage pertains to the physical area the AP can cover with a reliable connection.
E. The 5 GHz band has shorter wavelengths, which results in greater signal attenuation through obstacles compared to the 2.4 GHz band, leading to reduced coverage. (*CORRECT*)
Correction:
D. While increasing the minimum mandatory bandwidth might affect the number of users connecting to the network (only users who support the minimum BW can connect to the network), AP's coverage pertains to the physical area the AP can cover with a reliable connection.
B & D are correct
Reducing AP transmit power of an AP will reduce the signal strength, thereby reducing the coverage area.
This is a direct and effective way to control the size of the coverage area.
Increasing minimum mandatory data rate means that clients must maintain a higher signal quality to stay connected to the AP.
This forces devices to connect to the AP only when they are closer, thereby reducing the effective coverage area.
B. Reduce AP transmit power. Lowering the transmit power of an AP decreases the distance its signal can effectively travel. This method is directly aimed at reducing the coverage area to limit access to a smaller, more defined space.
D. Increase minimum mandatory data rate. By increasing the minimum mandatory data rate, devices with weaker signals, which are typically farther away from the AP, won't be able to connect. This effectively shrinks the coverage area by ensuring only devices that can communicate at higher data rates (and thus are likely closer to the AP) can maintain a connection.
A. Reduce channel width from 40 MHz to 20 MHz: This option is correct. Reducing the channel width limits the frequency range used for communication, which in turn reduces the coverage area of the AP.
B. Reduce AP transmit power: This option is correct. Lowering the transmit power of the AP decreases the signal strength and, consequently, reduces the coverage area.
C. Enable Fastlane: Enabling Fastlane prioritizes certain types of traffic but doesn't directly impact the coverage area of the AP.
D. Increase minimum mandatory data rate: While this can encourage devices to use higher data rates, it doesn't directly reduce the coverage area of the AP.
E. Disable 2.4 GHz and use only 5 GHz: This can affect the frequency bands used, but it doesn't inherently reduce the coverage area.
per other comments here:
https://www.ciscopress.com/articles/article.asp?p=2186207&seqNum=2
AP coverage area or the cell size, according to this Cisco link, there are two ways to reduce the AP coverage area:
+ Tuning Cell Size with Transmit Power
+ Tuning Cell Size with Data Rates
B and E are the only logically correct answer. Any high frequency wave will penetrate objects better (think gamma rays) but they have low wavelength and travel very less distance. If you have 5ghz high frequency, they will do well penetrating cardboard walls but don't expect it to penetrate and cross thick concrete walls.
Low frequency waves have high wavelength and travel farther and bounce off objects very well thats why you have AM and FM radio waves that is low frequency.
40mhz or 20mhz channel band has no affect on the range, its simply dividing the window into multiple channels.
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.
Hamzaaa
Highly Voted 3 years, 9 months agomhizha
Highly Voted 3 years, 9 months agojacop
3 years, 7 months agoEddgar0
2 years, 9 months agoTTTTTT
3 years, 5 months agoTTTTTT
3 years, 5 months agoamgue
3 years, 8 months agoPureInertiaCopy
1 year, 5 months agoSwitchKiller
Most Recent 2 weeks ago91fdc83
1 month, 2 weeks agodavdtech
4 months, 1 week agoAbdullahMohammad251
5 months agoAbdullahMohammad251
5 months agoAmirabbas
7 months, 2 weeks agoAmirabbas
7 months, 2 weeks ago[Removed]
7 months, 3 weeks agosupershysherlock
10 months agoCalyfas
11 months, 2 weeks agoslacker_at_work
11 months, 4 weeks agoRomrom99
1 year, 5 months agoYaa_Man_
1 year agodjedeen
1 year, 5 months agoforrestwanderer
1 year, 5 months agoAsher
1 year, 5 months agoteikitiz
1 year, 6 months ago