You have been tasked with creating a wireless link between two buildings on a single campus. The link must support at least 150 Mbps data rates. What kind of WLAN technology role should you deploy?
A. IBSS
B. WPAN
C. Access BSS
D. Wireless bridging
When compared with legacy Power 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 allows the WLAN transceiver to disable more components when in a low power state.
C. VHT TXOP power save uses the partial AID in the preamble to allow clients to identify frames targeted for them.
D. Legacy Power Save mode was removed in the 802.11ac amendment.
You are the network administrator for ABC Company. Your manager has recently attended a wireless security seminar. The seminar speaker taught that a wireless network could be hidden from potential intruders if you disable the broadcasting of the SSID in Beacons and configured the access points not to respond to Probe Request frames that have a null SSID field.
Your manager suggests implementing these security practices. What response should you give to this suggestion?
A. Any tenants in the same building using advanced penetration testing tools will be able to obtain the SSID by exploiting WPA EAPOL-Key exchanges. This poses an additional risk of exposing the WPA key.
B. Any 802.11 protocol analyzer can see the SSID in clear text in frames other than Beacons frames. This negates any security benefit of trying to hide the SSID in Beacons and Probe Response frames.
C. To improve security by hiding the SSID, the AP and client stations must both be configured to remove the SSID from association request and response frames. Most VLAN products support this.
D. This security practice prevents manufacturers' client utilities from detecting the SSID. As a result, the SSID cannot be obtained by attackers, except through social engineering, guessing, or use of a WIPS.
The requirements for a WLAN you are installing state that it must support unidirectional delays of less than 150 ms and the signal strength at all receivers can be no lower than -67 dBm. What application is likely used that demands these requirements?
A. E-Mail
B. RTLS
C. VoIP
D. FTP
You recently purchased four laptops containing dual-band 802.11ac adapters. The laptops can connect to your 2.4 GHz network, but they cannot connect to the 5 GHz network. The laptops do not show the 5 GHz SSIds, which are different than the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem?
A. Interference from non-Wi-Fi sources
B. Faulty drivers
C. DoS attack
D. Interference from other WLANs
What wireless networking term describes the increase of RF energy in an intentional direction with the use of an antenna?
A. Directed Radiation
B. Active Amplification
C. Passive Gain
D. Beam Digression
The center frequency of channel 1 in the 2.4 GHz band is 2.412 GHz (2412 MHz). What is the center frequency of channel 4?
A. 2.413
B. 2.427
C. 2.422
D. 2.417
When a STA has authenticated to an AP (AP-1), but still maintains a connection with another AP (AP-2), what is the state of the STA on AP-1?
A. Transitional
B. Unauthenticated and Unassociated
C. Authenticated and Unassociated D. Authenticated and Associated
Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?
A. Dish and grid
B. Dipole and yagi
C. Grid and sector
D. Patch and panel
What fact is true regarding controllers and Aps in a split-MAC architecture?
A. Using centralized data forwarding, frames leaving the Aps are never tagged Ethernet frames with VLAN identifiers
B. An IP tunnel is established between the AP and controller for AP management and control functions
C. With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as the authenticator
D. Management and data frames must be processed locally by the AP, while control frames are sent to the controller
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