CWNA-106 Online Practice Questions and Answers

What threecipher suites are specified by the IEEE 802.11-2012 standard? (Choose 3)

A. Counter Modewith CBC-MAC Protocol

B. Wi-Fi Protected Access v1 and v2

C. Internet Protocol Security

D. Extensible Authentication Protocol

E. GCM with Galois Message AuthenticationCode (GMAC) Protocol

F. Wired Equivalent Privacy

G. Temporal Key Integrity Protocol

When using an RF splitter to connect one transceiver to sector antennas loss is incurred. What is this loss called?

A. Conversion loss

B. Through loss

C. Active loss

D. Intentional loss

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

A. Predictive modeling software can predict the ideal access point location 100% of the time, whereas the results from manual surveyingare 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.

When planning an access point deployment that utilizes Power over Ethernet (PoE) switches at the network edge, what design decision could adversely affect the operation of 802.3-2012, Clause 33 APs?

A. All ports on theEthernet switch will be supporting Class 3 PoE powered devices.

B. Some APs are connected to a PoE switch and are also receiving power from an AC outlet.

C. The Ethernet switch uplink ports are not connected to an 802.3-2012, Clause 33- compliant core or distribution Ethernet switch.

D. A gigabit Ethernet switch port supporting an 802.11a/g AP auto-negotiates to 100 Mbps.

The IEEE 802.11a/n/ac physical layer technologies utilize the 5 GHz frequency band. What is true ofthe channels in this frequency spectrum?

A. 14 channels are available worldwide.

B. 11 channels are available worldwide.

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

D. DFS may be required in some regulatory domains on somechannels.

E. 802.11 channels areseparated by 5 Mhz

The OSI model is a 7-layer model forunderstanding the functions of a communication system. What OSI sublayers are specifically addressed by the IEEE 802.11-2012 standard? (Choose 2)

A. Network

B. PPDU

C. PLCP

D. MAC

E. IP

F. Transport

If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and reflected paths, what effect will the reflected signal have on the signal that took the direct line-of-sight path?

A. Thedirect signal will only be received if the reflected signal is more than 180 degrees out of phase.

B. The direct signal cannot be received if the indirect signal is less than 90 degrees out-of- phase.

C. The signals will be distorted if the indirect signalarrives simultaneously at the receiver, but 90 degrees out-of-phase.

D. If the signalsare in-phase, they will combine together, cancel one another out, and create a null.

When compared with legacyPower Save mode, how does VHT TXOP power save improve battery life for devices on a WLAN?

A. VHT TXOP power save allows stations to enter sleep mode and legacy Power Save does not.

B. VHT TXOP power save uses the partial AID in the preamble to allow clients to identify frames targeted for them.

C. Legacy Power Save mode was removed in the 802.11ac amendment.

D. VHT TXOP power save allows the WLAN transceiver to disable more components when in a low powerstate.

The IEEE 802.11-2012 standard requires VHT capabledevices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)? (Choose 2)

A. HT

B. OFDM

C. HR/DSSS

D. ERP-PBCC

E. DSSS-OFDM

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

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)

When replacing the antenna of a WLAN device with a similar antenna type that hasa higher passive gain, what antenna characteristic will decrease?

A. Beam width

B. Range

C. Active gain

D. Receive sensitivity

The IEEE 802.11-2012 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specification (PHY)?

A. OFDM

B. HR/DSSS

C. ERP-PBCC

D. DSSS

Which features are incorporated in the802.11-2012 specification and are recommend for robust WLAN client security? (Choose 2)

A. SSID hiding

B. CAPWAP with DTLS

C. 802.1X/EAP

D. CCMP cipher suite

E. IPSec VPN

F. MAC address white lists

Whatmechanisms are specified by the IEEE 802.11 standard to attempt to prevent multiple radios from transmitting on the RF medium at a given point in time? (Choose 3)

A. Random backoff timer

B. Clear channel assessment

C. Network allocation vector

D. Slot assessment value

E. Collision detection

ABC Company is planning a point-to-multipoint outdoor bridge deployment with standalone (autonomous)

802.11 bridge units. 802.1X/EAP will be used for bridge authentication. A Linux-based RADIUS server will be used for authentication. What device in the bridge implementation acts as the 802.1X Authenticator?

A. The RADIUS server

B. All non-root bridges

C. A designated non-root bridge

D. The root bridge

E. The Ethernet switch