HCIA-WLAN V3.0 (H12-311_V3.0) Practice Test

Questions # 41:

AP What factors are related to the coverage (). (Select 3 Answers)

Options:

AP Transmit power

Antenna gain

AP Size

Transmission loss

Questions # 42:

Which of the following 802.11 control frames is sent by a STA to acquire the right to the wireless medium?

Options:

CTS

RTS

ACK

PS-Poll

Questions # 43:

Telnet is one of the ways to manage AP remotely. Telnet authentication based on username and password can be realized through configuration.

Options:

True

False

Questions # 44:

Radio frequency mainly uses spread spectrum technology. Which of the following technologies belong to spread spectrum technology ()? (Select 2 Answers)

Options:

FHSS

DSSS

QPSK

OFDM

Questions # 45:

Which of the following is a restart AC6605 The command()?

Options:

reload

reboot

[Quidway]reload

[Quidway] reboot

Questions # 46:

Which of the following statements about antenna gain are true?

Options:

When selecting the antenna gain, ensure that the beam matches the coverage area. If the coverage distance is small, select low-gain antennas with wide vertical lobes to ensure the coverage effect in the area near the antenna.

An antenna's gain quantitatively measures the degree of input power an antenna can radiate in a given direction.

An antenna's gain measures its ability to transmit and receive signals in a specific direction. It is irrelevant to the antenna model.

Antennas are passive components, and they do not amplify electromagnetic signals.

Questions # 47:

For indoor distributed APs, which of the following descriptions is correct is ().

Options:

AP power up to 800mW

Can be deployed in conjunction with the operator's 3G network

Waterproof and dustproof

AP6310SN supports dual frequency mode

Questions # 48:

Single area WLAN When planning, influence AP The factors of the number of deployment are ().

(Select 3 Answers)

Options:

Number of people connected in the area

Area size

Field strength and bandwidth requirements

Number of network ports

Questions # 49:

QoS What kinds of service models are included ()

(Select 3 Answers)

Options:

Best Effort Model

IntServ Model

FIFO Model

DiffServ Model

Questions # 50:

Which of the following protocols can support at the same time 2.4GHz Frequency band and 5GHz Frequency band()?

Options:

802.11a

802.11b

802.11g

802.11n

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