H12-311_V3.0 HCIA-WLAN V3.0 Questions and Answers

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

AP Domain AP The deployment type does not include ().

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

At present, the security policy based on user authentication that is widely used in the enterprise

network is () (Select 2 Answers)

In the WDS point-to-point network, the backbone link between Root AP and Leaf AP is connected in the 5GHz frequency band. The frequency band is 149. Which of the following frequency bands () should Leaf AP use?

What are the general methods to solve co-channel interference (). (Select 3 Answers)

If one BSS Totally by STA Composition, then BSS What is also called ()?

AP Transmit power 20dBm , Antenna gain 4dBi , Cable and device loss 1dB , Terminal receiving antenna gain 2dBi , Space propagation loss 80dB , Terminal receiving level RSSI= ().

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

CAPWAP Which of the following standards organization proposed the agreement ()?

802.11 Frame, when the network uses WDS When the model is signaled, To DS and From DS What are the values of ()?

If changed AP The configuration parameters of the radio must be restarted AP The order can only take effect.

Huawei plug-in controller ACU Board manageable AP What is the maximum number of ()?

If it is turned on on the switch PoE The function of this, you can no longer access traditional equipment on these interfaces.

For areas with roaming needs, adjacent AP Coverage remains 50% The above overlap to ensure that the terminal is AP Smooth switching between.

exist WLAN Involved in the configuration VLAN What kinds of types are there ()?

(Select 3 Answers)

2.4 GHz What is the frequency band US non-overlapping channel ()?

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

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

802.11a exist 20M How many sub-carriers can be used to transmit data in the mode ()?

The distance between the center frequencies of the two channels is less than or equal to

In order to avoid adjacent channel interference during domain channel planning, the same channel is not allowed to be used.

25MHz When there is an overlapping area between the channels, there will be some interference, so in the adjacent area

The following about SSID The statement is wrong ().

thin AP Find AC In the process, the first step is AP Check if there is pre-configured static AC of IP List.

If the wireless client wants to pass AP Connected to WLAN , Then what is it through to connect to the wireless network ()?

If an enterprise’s wireless network networking mode is direct forwarding, then thin and then transfer the message CAPWAP Encapsulate, pass CAPWAP The tunnel transmits this data message to AP can 802.11 Data messages are converted into Ethernet messages, AC.

for AC6605 , The following command () can be used to view AP Is it online?

For outdoor WLAN Cover, the following statement is correct ().

(Select 3 Answers)

802.11g What is the bandwidth of each channel of the frequency band ()?

Is the following statement about the introduction of frequency planning correct ()?

(Select 2 Answers)

when AC Only one interface is connected to the aggregation layer switch, and the user traffic is directly out of the public network through the aggregation layer switch, and the networking mode that

does not flow through should be (). AC At this time

The lobe width is a very important parameter commonly used in directional antennas. It refers to the width of the antenna's radiation pattern below the peak (.)dB The angle of the premises

About Huawei WLAN Description of the characteristics of the product, the following statement is correct ().

The following Huawei AP Which AP support SFP Fiber interface()?

AP Unavailable IP Common reasons for addresses are (). (Select 3 Answers)

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

(Select 3 Answers)

Huawei Wireless AP What are the two upgrade modes download ()? (Select 2 Answers)

Each AC Equipment needs to be specified AC The source of IP Address for peace AP Establish CAPWAP Tunnel, one AC You can specify up to 2 Piece WLAN source IP.

What frame does the wireless client passively scan to obtain the surrounding wireless network information ()?

The following description of TKIP encryption is wrong ().

A 10 Floors of buildings need to be covered WLAN Signal, because taking into account the floor block,

which can be set to 6 channel.

5,6 Layered WLAN Signal frequency

Wireless network engineer WLAN When planning the network, use RF The purpose of simul-ation is (). (Select 3 Answers)