What is the working frequency band used in the original 802.11 protocol?
A. 2.4 GHz
B. 900 MHz
C. 2.0 GHz
D. 5 GHz
Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-band mode of operation (supporting two operating bands of 2.4 GHz and 5 GHz).
A. True
B. False
In WLAN, the AP has been working in a half-duplex state.
A. True
B. False
In 1999, the IEEE 802.11a standard was developed. The standard specifies that the WLAN operating frequency band is 5.15 to 5.825 GHz, and the data transmission rate reaches 11 Mbps.
A. True
B. False
Which technology is below the wireless metropolitan area network?
A. 2G/3G
B. WLAN
C. Bluetooth
D. WiMAX
If a wireless client wants to connect to a WLAN through an AP, what does it connect to over the wireless network?
A. SSID
B. IBSS
C. BSID
D. BSA
What is the area covered by a single AP?
A. BSA
B. ESA
C. SSA
D. TSA
BSS is called Basic Service Set, and BSS can be divided into Independent BSS and Infrastructure BSS.
A. True
B. False
Which of the following protocols is defined in the Mesh networking?
A. 802.11a
B. 802.11g
C. 802.11e
D. 802.11s
If a BSS is composed entirely of STAs, what is the BSS also called?
A. IBSS
B. ESS
C. SSID
D. BSA
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