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Huawei H12-311_V3.0 - HCIA-WLAN V3.0

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Total 338 questions

Compared with 802.11a/b/g, the technical advantages of 802.11n include which of the following aspects ()?

A.

The maximum theoretical transmission rate is increased to 600Mbps

B.

Backward compatible with 802.11a/b/g protocol

C.

Support MIMO technology

D.

The other three items are correct

Among the following options, () is a prerequisite for enabling Huawei's load balancing function.

A.

AP Belong to the same type

B.

AP In the same AC Under management, and AP Signal overlap

C.

STA Can scan to each other for load balancing AP

D.

AP The output power settings are the same

The antenna gains gain through ().

A.

Use power amplifiers in antenna systems

B.

Make the antenna radiation more concentrated

C.

Use high-efficiency antenna feeder

D.

Use equipment with low standing wave ratio

By a wireless AP And what is the network of associated wireless clients called ()?

A.

IBSS

B.

BSS

C.

ESS

D.

NSS

For one adopts WPA2 PSK Certified and SSID For broadcast wireless networks, users can double-click the username and password to access the network. SSID And enter the correct use

A.

True

B.

False

Which of the following options is correct ()? (Select 3 Answers)

A.

SSID Technology can divide a wireless local area network into several sub-networks that require different authentication. Each sub-network requires independent

authentication. Only users who pass the authentication can enter the corresponding sub-network to prevent unauthorized users from entering This network.

B.

BSSID Is actually AP of MAC Address, used to identify AP Managed BSS , In the same AP Inside BSSID and SSID One-to-one mapping.

C.

Users can be in different SSID Roaming is realized below.

D.

in a ESS Inside SSID Is the same, but for ESS Within each AP Corresponding BSSID Are not the same. If oneAP Can support multiple at the

same time SSID , Then AP Will assign different BSSID To correspond to these SSID .

When a hardware failure occurs in an AP in the network, in order to avoid data reconfiguration, the user can quickly complete the AP replacement by configuring the AP.

replace.

A.

True

B.

False

Which of the following descriptions of power splitters and couplers are correct is ().

A.

Power divider and coupler are equal power distribution

B.

The power divider is equal power distribution, and the coupler is unequal power distribution

C.

The power divider is unequal power distribution, and the coupler is equal power distribution

D.

Power divider and coupler are unequal power distribution

Among the following options, () is the reason for using 5G priority access.

A.

It is easier to make network planning in the 5G frequency band

B.

5G frequency band can provide better access capability and capacity

C.

The connection speed between users and APs in the 5G frequency band is very fast

D.

The transmission rate of the 5G frequency band is higher than that of the 2.4G frequency band

AC What is the function in the wireless network()? (Select 3 Answers)

A.

Centralized management AP

B.

Realize roaming function

C.

Send beacon frame

D.

Wireless intrusion detection