Home » Cisco » 300-360 » Which requires voice capability and location services. Which two requirements are inputs to the design?
An engineer is performing a predictive wireless design for a carpeted office space, which requires voice capability and location services. Which two requirements are inputs to the design? (Choose two.)
A. overlapping -67 dBm coverage from three access points
B. overlapping -75 dBm coverage from three access points
C. overlapping-72 dBm coverage from two access points
D. continuous -67 dBm coverage from one access point
E. continuous -72 dBm coverage from one access point
Correct Answer: A
Explanation/Reference:
Explanation:
For a voice network the APs are grouped closer together and have more overlap than a data-only installation because voice clients need to roam to a better AP before dropping packets. Generally, you should create smaller cells than for data-only networks and ensure the overlapping cell edges are at or above -67 dBm.
Reference: http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob73dg/emob73/ch3_WLAN.html#pgfId-1000250
Answer is B.
If it were 2 aps -67 then it would be correct for voip
I am really studying hard for this test, if there anyone here that took this test recently ?
Could you please share your experience?, is this questions still valid ?
Not sure which of A and B is the right answer for location service. Here is what Cisco says:
For mobile devices to be tracked properly, a minimum of three access points (with four or more preferred
for better accuracy and precision) should be detecting and reporting the received signal strength (RSSI)
of any client station. It is preferred that this detected signal strength level be -75dBm or better
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Borderless_Networks/Unified_Access/CMX/CMX_LocFund.pdf
But here the RSSI of -75dBm or better is from the 3 APs perspective. The link didn’t mention the RSSI from the mobile device’s perspective. AP and mobile device have different transmission power, so when an AP has -75dBm RSSI from a mobile device, the same mobile device could have -60dBm from that particular AP.
A & D make more sense if -67dbm is a given option. If -67dbm is not a given choice, then B & D.
BD
Answer is B for loacation Services and D for Voice
A and D are correct.
For mobile devices to be tracked properly, a minimum of three access points (with four or more preferred for better accuracy and precision) should be detecting and reporting the received signal strength (RSSI) of any client station, asset tag, or rogue device being tracked. It is preferred that this detected signal strength level be -75dBm or better.
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/WiFiLBS-DG/wifich5.html
What is the other requirement?…the question asks for two