H12-311 Online Practice Questions and Answers

What is the Chinese name of SSID?

A. Basic service set

B. Basic service area

C. Extended service set

D. Service set identifier

Which of the following AP modes does not belong to the WDS network?

A. Root AP

B. Middle AP

C. Bridge AP

D. Leaf AP

In the 802.11 frame, the interframe space between RTS and CTS is ()?

A. SIFS

B. IFS

C. DIFS

D. PIFS

What are the rates that 802.11a can support?

A. 6,12,24,54 Mbps

B. 6,9,12,18,24,36,48,54 Mbps

C. 6,12,18,24,36,48,54 Mbps

D. 6,9,12,18,24,30,36,48,54 Mbps

The Int-Serv model provides users with end-to-end absolute QoS guarantees, but the reason for the lack of successful large-scale commercial use is.

A. Limited bandwidth reservation

B. Low forwarding efficiency

C. Poor scalability

D. Not conducive to traffic regulation

The two commonly used units describing antenna gain are dBi and dBd, and the conversion relationship between them is: dBi=dBd+2.14.

A. True

B. False

The omnidirectional antenna exhibits a degree of on the horizontal pattern.

A. 90

B. 180

C. 360

D. 0

To configure a WLAN service, you need to add an AC to the U2000.

A. True

B. False