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Questions # 1:

What advantages does using predictive site survey modeling software offer over performing a manual site survey? (Choose 2)

Options:
A.

Predictive modeling software can predict the ideal access point location 100% of the time, whereas the results from manual surveying are less reliable.

B.

Predictive modeling software makes it simple to assess multiple different AP locations and then adjust and display the AP’s expected coverage pattern in almost real-time.

C.

Predictive modeling software provides more reliable data than manual surveys when fine-tuning and validating access point placement after the installation.

D.

The exact impact of interference sources from external networks can be more accurately measured when using predictive modeling software than with manual surveys.

E.

It takes less time to create an initial site survey for a large facility when using predictive modeling software than when performing a manual survey.

Questions # 2:

The 802.11 protocol specifies a fundamental channel access method that is required for all stations and is used in all IBSS and BSS networks.

What is this fundamental channel access method called?

Options:
A.

DCF

B.

PCF

C.

HCF

D.

EDCAF

E.

HCCA

F.

PCF/CA

Questions # 3:

Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility of both OFDM and HR/DSSS? (Choose 2)

Options:
A.

HR/DSSS (802.11b)

B.

OFDM (802.11a)

C.

ERP (802.11g)

D.

HT (802.11n)

E.

CCK (802.11b)

F.

VHT (802.11ac)

Questions # 4:

The client devices that connect to your network include a mix of dual-band 802.11n and 802.11ac, single-band 802.11b/g/n, and some 802.11a/g/n. Your access points are configured with the same SSID on both the 2.4 and 5 GHz bands. The APs are also configured to prioritize client connectivity to 5 GHz.

How does an AP perform band steering to encourage clients to use 5 GHz?

Options:
A.

When the client sends a probe request in the 2.4 GHz band, the AP may reply with information about the 5 GHz BSS.

B.

The AP may ignore the initial probe requests or 802.11 authentication requests sent in the 2.4 GHz band by dual-band clients

C.

The AP may allow an 802.11 association with the client in the 2.4 GHz band, then send unicast channel switch announcements to the client announcing the 5 GHz channel as the new channel.

D.

After receiving probe request frames from the same client in both bands, the AP may send an association request frame to the client in the 5 GHz band.

E.

The AP may allow an 802.11 association with the client in the 2.4 GHz band, then the AP may perform a transparent client handoff by transferring the client’s MAC address to the 5 GHz radio.

Questions # 5:

What causes of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries? (Choose 2)

Options:
A.

Data frames too large for the physical environment

B.

Client stations broadcasting with too much power

C.

Access points broadcasting with too little power

D.

Client stations too close in proximity to each other

E.

Obstacles between client stations causing attenuation

F.

Large 802.11 cells with physically distributed stations

Questions # 6:

You are selecting antennas for a WLAN operating in the 5 GHz frequency band. What specifications should be evaluated for an antenna before it is implemented in this WLAN system? (Choose 3)

Options:
A.

802.11ad compatibility

B.

TPC support

C.

Impedance in Ohms

D.

Elevation Beamwidth

E.

Return Loss Rating

F.

Operating Frequencies

Questions # 7:

What factors influence the distance that an RF signal can be effectively received? (Choose 3)

Options:
A.

Transmitting station’s power source

B.

Receiving station’s radio sensitivity

C.

Free Space Path Loss

D.

MAC layer encryption

E.

Transmitting station’s output power

F.

Temperature in the Fresnel zone

Questions # 8:

In an 802.11n WLAN with a heterogeneous set of associated client devices including 802.11b, 11g, and 11n, what HT protection mode will the BSS use?

Options:
A.

Mode 0: No protection mode (Greenfield)

B.

Mode 1: Nonmember protection mode

C.

Mode 2: 20 MHz protection mode

D.

Mode 3: Non-HT mixed mode

Questions # 9:

Which antenna types are commonly used by indoor Wi-Fi devices in a MIMO diversity implementation? (Choose 2)

Options:
A.

Dipole

B.

Patch

C.

Dish

D.

Grid

E.

Sector

Questions # 10:

You are using a tool that allows you to see signal strength for all APs in the area with a visual representation. It shows you SSIDs available and the security settings for each SSID. It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available. What kind of application is described?

Options:
A.

Site survey utility

B.

Wireless Network Management System

C.

Protocol analyzer

D.

Spectrum analyzer

E.

WLAN discovery tool

F.

Wireless Intrusion Protection System

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