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What is a common feature of an 802.11 WLAN client utility? (Choose 2)

A.

Real-time retry monitor

B.

AP Signal strength meter

C.

Spectrum analyzer utility

D.

VLAN configuration

E.

Link statistics display

ABC Company performs government contract work that requires disabling WLANs and has recently purchased an 802.11 Wireless Intrusion Prevention System (WIPS) to enforce their “NO WIRELESS” network security policy.

What attack type cannot be recognized by the WIPS?

A.

Deauthentication

B.

Rogue APs installation

C.

Layer 3 DoS

D.

Packet capturing

E.

RF jamming

XYZ Company has hired you to perform an indoor site survey of their 5-story facility. They own the building and rents out unused floors (floors 2 and 4) to other companies, and the other companies already use 802.11 WLANs. XYZ Company wants all of the offices they occupy to be surveyed as part of the project.

What actions should be recommended as part of the site survey project? (Choose 2)

A.

Verify that RF signals from XYZ Company’s APs are not penetrating outside the perimeter of the building.

B.

Determine how much signal strength is passing between floors.

C.

Locate wiring closets on each floor occupied by XYZ Company.

D.

Identify security best practice violations on neighboring WLANs.

E.

Verify that XYZ Company’s APs are not directly above or below APs on adjacent floors.

How is throughput capacity scaled in a single channel architecture (SCA) WLAN system?

A.

By increasing transmit power and placing APs that are on a single channel farther from one another.

B.

By adding more SSIDs to existing APs to spread users across different contention domains.

C.

By adding non-overlapping channel layers through the addition of more APs.

D.

By using downlink data compression and uplink flow control at the AP.

E.

By using a single 802.11n radio to transmit simultaneous downlink data streams to different users.

AP-1 is a 3x3:2 AP. STA-3 is a 3x3:3 client. What is the maximum number of spatial streams that can be used for a downlink HT-OFDM transmission from AP-1 to STA-3?

A.

One spatial stream, because the definition of the AP indicates that it is capable of only one spatial stream.

B.

Three spatial streams, because the definition of the client indicates that it is capable of only three spatial streams.

C.

Two spatial streams, because the definition of the AP indicates that it is capable of only two spatial streams.

D.

Three spatial streams, because the definition of the AP indicates that it is capable of only three spatial streams.

In an infrastructure Basic Service Set (BSS), how does the passive scanning process occur?

A.

Access points broadcast Beacons on all channels of each radio within the regulatory domain. Nearby client stations record information found in the Beacons for use in the association process.

B.

Client stations broadcast Probe Request frames on all supported channels in the regulatory domain. Nearby access points respond with Probe Response frames. Client stations record information in the Probe Response frames for use in the association process.

C.

Client stations broadcast Probe Request frames on the single channel for which they are programmed. Nearby access points respond on that channel with Probe Response frames. Client stations record information found in the Probe Response frames for use in the association process.

D.

Access points broadcast Beacons on a single channel for which they are programmed. Nearby client stations listen for Beacon frames and record information found in the Beacons for use in the association process.

What features were introduced in the IEEE 802.11h amendment in order to uphold regulatory requirements for 5 GHz operation? (Choose 2)

A.

256-QAM

B.

Distributed Coordination Function (DCF)

C.

Phase Shift Keying (PSK)

D.

Transmit Power Control (TPC)

E.

Radio Resource Management (RRM)

F.

Dynamic Frequency Selection (DFS)

Return Loss is the decrease of forward energy in a system when some of the power is being reflected back toward the transmitter.

What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?

A.

A Voltage Standing Wave Ratio (VSWR) of 1:1

B.

An impedance mismatch between components in the RF system

C.

Cross-polarization of the RF signal as it passes through the RF system

D.

The use of cables longer than one meter in the RF system

E.

High output power at the transmitter and use of a low-gain antenna

What word describes the bending of an RF signal as it passes through a medium of a varying density from that of free space?

A.

Diffraction

B.

Reflection

C.

Refraction

D.

Diffusion

E.

Scattering

What statements about the SSID are true? (Choose 2)

A.

The SSID is a security session identifier used in RSNs.

B.

The SSID must be included in an association request frame.

C.

The SSID is an alphanumeric value assigned to device manufacturers by the IEEE.

D.

The SSID is a pseudo-random number assigned to each client by an AP.

E.

The SSID is an alphanumeric value with a maximum length of 32 octets.

F.

When configuring a new network, creating an SSID is optional.