Question 1

Which one of the following options would you consider a well-designed WLAN infrastructure when measuring RSSI, Noise Floor, and SNR in a required area?

Options :

A : Low RSSI, Low Noise Floor, Low SNR

B : High RSSI, Low Noise Floor, High SNR

C : High RSSI, High Noise Floor, Low SNR

D : Low RSSI, High Noise Floor, Low SNR

Answer: B

Question 2

What advantages are provided by per-user PSKs when compared with ESS-wide PSKs? (Choose all that apply.)

Options :

A : Per-user PSKs allow easier user-based access control with WPA/WPA2-Personal security.

B : Per-user PSKs are easier to manage if a PSK is compromised or an employee leaves a company.

C : Per-user PSKs are standardized and certified by the Wi-Fi Alliance.

D : Per-user PSKs are more secure than ESS-wide PSKs because they support mutual authentication.

Answer: A,B

Question 3

When designing a wireless bridge to connect two offices 13 kilometers (approximately 8 miles) apart, which factor must the Wireless Engineer consider to account for Fresnel Zone clearance?

Options :

A : Earth bulge

B : Antenna gain

C : FSPL

D : Receive sensitivity

Answer: A

Question 4

After deploying a 5 GHz-only WLAN infrastructure in the USA, using 20 MHz channel widths and all 25 available channels, a manager tests the Guest SSID on his 802.11n tablet. During testing, he experiences several areas with poor RSSI (below -80 dBm) or no signal at all. Upon checking, all APs are operational, and coverage was validated post-deployment. What is the likely cause of this issue?

Options :

A : His tablet doesn't support the 5 GHz band

B : His tablet only supports a 40 MHz channel-width

C : His tablet does not support one or more of the 5 GHz channels

D : His tablet doesn't support MU-MIMO

Answer: C

Question 5

Why should band steering algorithms allow stations to connect to the 2.4 GHz band after some number of ignored Probe Requests?

Options :

A : Because the FCC requires it.

B : Because some clients are persistent clients that will not move on to the 5 GHz band.

C : Because the 802.11 standard requires it.

D :

Because the AP will experience a buffer overflow if they do not eventually respond with a Probe Response.

Answer: B

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