H12-311 Online Practice Questions and Answers

Which of the following protocols are IEEE 802.11 standards Select 3 Answers)?

A. 802.11a/b/g/n

B. 802.11i

C. 802.1X

D. 802.11s

Which of the following technologies works at 5 GHz (Select 2 Answers)?

A. Radar

B. Bluetooth

C. Infrared

D. Digital Satellite

On a WDS network, a root AP can connect to multiple leaf APs, but a leaf AP can connect to only one root AP.

A. True

B. False

Which of the following is included in the 82.802.11 WLAN CSMA/CA mechanism (Select 3 Answers)?

A. Carrier Sense

B. Multiple Access

C. Conflict Detection

D. Conflict Avoidance

Configure the authentication mode of the AP. What are the authentication modes supported by the AP (Select 3 Answers)?

A. mac-auth

B. sn-auth

C. no-auth

D. mac-sn-auth

The algorithm used for CCMP encryption is .

A. RC4

B. AES

C. SMS4

D. Michael

TKIP encryption is more secure than WEP encryption because (Select 3 Answers).

A. Adopt a longer IV

B. Added a key distribution mechanism, no longer using a single key

C. Adopting a more complex encryption algorithm

D. Using a stronger data verification algorithm

What is the coverage of the AP (Select 3 Answers).

A. AP transmit power

B. Antenna gain

C. AP size

D. Transmission loss

What are the general methods for solving co-channel interference (ABD) (Select 3 Answers).

A. Adjust AP transmit power and adjust antenna feed

B. Reasonable frequency reuse to ensure that the same channel does not appear in the same or adjacent coverage area

C. Multi-directional coverage using omnidirectional antennas

D. Natural isolation using obstacles

How many management nodes (B) does the eSight Standard Edition support?

A. 60

B. 2000

C. 5000

D. 20000