CWNA-106 Certified Wireless Network Administrator Questions and Answers

Backoff

Pseudo-random

Virtual

Active

Physical

Interframe

Vector

RF cables have upper and lower frequency range specifications.

75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.

Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.

Every RF connector causes insertion loss.

Large diameter RF cables cause greater loss than small diameter cables.

Frames

Packets

Segments

Bits

Bytes

Symbols

What data cabling is currently installed in the rooms and throughout the hotel?

How much RF loss do you expect between hotel rooms?

Who installed your existing wired network?

What types of applications will be used by the hotel staff?

On what frequency do the microwave ovens operate in the hotel suites?

To improve capacity in the BSS

To reduce the size of the AP’s effective service area

To prevent 802.11b devices from associating

To maximize the range of the highest data rates

To prevent VoWiFi multicast frames

To enable support for long preambles

Counter Mode with CBC-MAC Protocol

Wi-Fi Protected Access v1 and v2

Internet Protocol Security

Extensible Authentication Protocol

GCM with Galois Message Authentication Code (GMAC) Protocol

Wired Equivalent Privacy

Temporal Key Integrity Protocol

Link aggregation / port trunking

802.1p and DSCP QoS

BGP and Frame Relay

Captive web portals

IGMP snooping

Network

PPDU

PLCP

MAC

IP

Transport

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

Determine how much signal strength is passing between floors.

Locate wiring closets on each floor occupied by XYZ Company.

Identify security best practice violations on neighboring WLANs.

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

SSID hiding

CAPWAP with DTLS

802.1X/EAP

CCMP cipher suite

IPSec VPN

MAC address white lists

14 channels are available worldwide.

11 channels are available worldwide.

Regulatory domains worldwide require DFS and TPC in all these channels.

DFS may be required in some regulatory domains on some channels.

802.11 channels are separated by 5 Mhz

Theft prevention and data security of WLAN infrastructure devices

Wireless intrusion monitoring and response procedures

WLAN performance analysis baseline documentation

Wired network performance analysis and baseline documentation

Training of the IT staff on WLAN operational security

User density planning and AP client association thresholds

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

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

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

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

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.

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.

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.

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.

MAC Service Data Unit (MSDU)

MAC Protocol Data Unit (MPDU)

IP datagram

PLCP Service Data Unit (PSDU)

PLCP Protocol Data Unit (PPDU)