Question 1

While seeking the source of interference on channel 11 in your 802.11n WLAN running within 2.4 GHz, you notice a signal in the spectrum analyzer real time FFT display. The signal is characterized with the greatest strength utilizing only 1-2 megahertz of bandwidth and it does not use significantly more bandwidth until it has weakened by roughly 20 dB. At approximately -70 dB, it spreads across as much as 35 megahertz of bandwidth.

What kind of signal is described?

AA high-power, narrowband signal

BA 2.4 GHz WLAN transmission using transmit beam forming

CAn HT-OFDM access point

DA frequency hopping wireless device in discovery mode

EA deauthentication flood from a WIPS blocking an AP

FA high-power ultra wideband (UWB) Bluetooth transmission

Answer : A

Question 2

Wireless Intrusion Prevention Systems (WIPS) provide what network security services? (Choose 2)

AConfiguration distribution for autonomous APs

BWireless vulnerability assessment

CApplication-layer traffic inspection

DAnalysis and reporting of AP CPU utilization

EPolicy enforcement and compliance management

Answer : B, E

Question 3

ABC Company requires the ability to identify and quickly locate rogue devices. ABC has chosen an overlay WIPS solution with sensors that use dipole antennas to perform this task. Use your knowledge of location tracking techniques to answer the question.

In what ways can this 802.11-based WIPS platform determine the location of rogue laptops or APs? (Choose 3)

ATime Difference of Arrival (TDoA)

BAngle of Arrival (AoA)

CTrilateration of RSSI measurements

DGPS Positioning

ERF Fingerprinting

Answer : A, C, E

Question 4

In an effort to optimize WLAN performance, ABC Company has upgraded their WLAN infrastructure from 802.11a/g to 802.11n. 802.11a/g clients are still supported and are used throughout ABC's facility. ABC has always been highly security conscious, but due to budget limitations, they have not yet updated their overlay WIPS solution to 802.11n or 802.11ac.

Given ABC's deployment strategy, what security risks would not be detected by the 802.11a/g WIPS?

AHijacking attack performed by using a rogue 802.11n AP against an 802.11a client

BRogue AP operating in Greenfield 40 MHz-only mode

C802.11a STA performing a deauthentication attack against 802.11n APs

D802.11n client spoofing the MAC address of an authorized 802.11n client

Answer : B

Question 5

Your organization required compliance reporting and forensics features in relation to the 802.11ac WLAN they have recently installed. These features are not built into the management system provided by the WLAN vendor. The existing WLAN is managed through a centralized management console provided by the AP vendor with distributed APs and multiple WLAN controllers configured through this console.

What kind of system should be installed to provide the required compliance reporting and forensics features?

AWNMS

BWIPS overlay

CWIPS integrated

DCloud management platform