300-360 · Question #222
Which three post-installation checks should an engineer perform after a new wireless installation? (Choose three.)
The correct answer is A. Check for co-channel interference. B. Check for adequate signal levels as surveyed. D. Conduct a passive and active survey of each media type in use. Post-installation validation should confirm the network performs as designed. (A) Checking for co-channel interference ensures that APs on the same channel are not degrading each other's performance - a common issue when channel planning is not optimal. (B) Verifying adequate…
Question
Which three post-installation checks should an engineer perform after a new wireless installation? (Choose three.)
Options
- ACheck for co-channel interference.
- BCheck for adequate signal levels as surveyed.
- CConduct a passive survey of 802.11a and 802.11b.
- DConduct a passive and active survey of each media type in use.
- EVerify that the minimum data rate is 24 Mbps.
- FVerify that the cell overlap is 20%.
How the community answered
(38 responses)- A95% (36)
- C3% (1)
- E3% (1)
Explanation
Post-installation validation should confirm the network performs as designed. (A) Checking for co-channel interference ensures that APs on the same channel are not degrading each other's performance - a common issue when channel planning is not optimal. (B) Verifying adequate signal levels against the original survey confirms the physical installation matches the design. (D) Conducting both passive (RF environment) and active (connectivity + throughput) surveys for each media type (802.11a/n/ac/ax) validates the full stack. Choice C is incorrect because a passive-only survey omits throughput validation. Choice E (24 Mbps minimum data rate) and F (20% overlap) are design parameters, not post-installation verification steps in themselves.
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