In addition to throughput enhancements, what other improvements does a dual-band 802.11ac AP provide when compared with 802.11a/g APs? (Choose 2)

A. Introduces "fast transition" roaming protocols for VoWiFi phones

B. Better link reliability between 802.11a/b/g client devices and 802.11ac APs

C. Improves service quality for real-time applications at greater distances

D. Increases in receive sensitivity enhance RTLS location accuracy

E. Stronger security with more robust encryption modes.

What terms accurately complete the following sentence?

The IEEE 802.11-2012 standard specifies mandatory support of the ___________ cipher suite for Robust Security Network Associations, and optional use of the ___________ cipher suite, which is designed for use with pre-RSNA hardware.

A. CCMP, TKIP

B. 802.1X/EAP, WEP

C. TLS, SSL

D. RC5, RC4

What HT technology requires MIMO support on both the transmitter and receiver?

A. Spatial multiplexing

B. Shot guard intervals

C. Maximal ratio combining

D. Orthogonal Frequency Division Multiplexing

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?

A. After waiting a SIFS, all APs reply at the same time witha probe response.

B. After waiting a SIFS, a designated AP sends an ACK, and then replies with a probe response.

C. Each AP checks with the DHCP server to see if it can respond and then acts accordingly.

D. For each probe request frame, only one AP may reply with a probe response.

E. Each AP responds in turn after preparing a probe response and winning contention.

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.

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)

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.

The 802.11 protocol specifies a fundamentalchannel access method that is required for all stations and is available for use in all IBSS and BSS networks.

What is this fundamental channel access method called?

A. DCF

B. PCF

C. HCF

D. EDCAF

ABC Company has thousands of Wi-Fi users accessing their network on a daily basis. Their WLAN consists of 700 access points, 6 WLAN controllers, and a wireless network management system.

Whatnetwork functions are performed by the enterprise-class WNMS?

A. Radio management, fast roaming, key caching, and other centralized control plane operations

B. Centralized bridging of guest data traffic and application of firewall and QoS policies to data

C. Management of WLAN controller configuration and provisioning of firmware updates

D. Generating, encrypting, and decrypting 802.11 frames and collecting RF radio data.

In an enterprise WLAN, what condition will prevent a dual-band VHT/HT client device from performing a fast and seamless transition (i.e. latency-sensitive applications are notdisrupted) between two access points that are managed by the same WLAN controller?

A. The current AP is using channel 1 and the new AP is using channel 40.

B. The SSID of the current AP does not match the SSID of the new AP.

C. The current AP supports only HT and the new AP is VHT capable.

D. The access points are hiding the SSID in Beacons and Probe Response frames.