H12-311_V3.0 Exam Questions

Which port number of the control message of the CAPWAP tunneling protocol?

Which one does the roaming of terminals in different VLANs belong to?

Which one does the roaming of terminals in different VLANs belong to?

CAPWAP tunnel encapsulation AC side data message port number is 5246, control message port number is 5247.

What is the systematic process of AP radio resource management?

Regarding the working principle of 5G priority, which of the following statement is correct?

There are many video conferences in large companies, and QoS generally adopts which of the following service model?

Which of the following is the reason for adopting 5G priority access?

Regarding the description of the characteristics of Huawei WLAN products, which of the following statement is correct?

Which of the following is not the main purpose of roaming?

When the 802.11 message sent by the STA is to enter the Ethernet through the AP, it is converted into an 802.3 message, which does not belong to the priority mapping method?

The Int-Serv model provides end-to-end absolute QoS guarantee for users, which of the following reason for the failure of large-scale commercial use?

In order to facilitate management and maintenance, the AP power supply method is generally preferred to select which of the following for power supply?

The network cable used in the project should theoretically not exceed how many meters?

AP can provide power supply and data transmission through POE switch.

Various pipes, metal keels and aluminum alloy gussets in the ceiling will have a great impact on the actual signal coverage effect.

The 802.11 protocol that defines the quality of service in WLAN is?

In order to obtain better coverage effect, how can the AP signal pass through the wall as much as possible?

For the 3 APs deployed on the first floor, the channels from left to right are 1, 6, and 11 respectively. At this time, the channels of the 3 APs deployed on the 2nd floor should b...

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

The omnidirectional antenna is shown as () degrees on the horizontal direction diagram.

The lobe width is a very important parameter commonly used in directional antennas. It refers to the width of the angle formed by the radiation pattern of the antenna below the pea...

Which of the following can be explained by the gain of the antenna?

Metal objects have a greater attenuation effect on wireless signals, so APs or antennas should not be placed behind metal ceilings, etc.

The AC executes the load balancing process according to which of the following information?

Which of the following is a prerequisite for enabling the Huawei load balancing function?

When channel 1 of the 2.4GHz frequency band in the coverage area has a lot of interference and is serious, adjusting the device to channel 3 can effectively reduce interference.

The power of AP installed indoors is generally () mW.

Capacity planning mainly starts from the aspects of equipment performance, number of users, bandwidth requirements and wireless environment, etc., and estimates the number of APs r...

Among the following obstacles, which of the following has the largest loss of wireless signals?

Which of the following can be connected through AP and antenna?

If there is a high demand for WLAN capacity in a certain coverage area, which of the following should be considered by the construction method?

For the selection of WLAN coverage antennas, it is recommended to select () for narrow and long areas, and it is recommended to select () for open short-distance areas.

The index used to describe the degree of concentration of the antenna on the transmission power is ().

A 10-story building needs to cover WLAN signals, because considering the floor blocking, the signal frequency of WLAN on the 5th and 6th floors can be set to 6 channels at the same...

If the transmit power of the AP is 1mW, after converting to dBm, it will be () dBm.

20dBm is equivalent to () mW.

In what way does the antenna gain?

Antenna A has a gain of 11dBi, and antenna B has a gain of 8dBi, so how much greater is the gain of antenna A than antenna B?

For areas with roaming requirements, the coverage of adjacent APs should maintain an overlap of more than 50%, so as to ensure the smooth switching of terminals between APs.

When the distance between the center frequencies of two channels is less than or equal to 25MHz, there will be overlapping areas between the channels, and there will be some interf...

Huawei's load balancing judgment methods include traffic mode, session mode, and virtual switching mode.

For indoor distributed AP, which of the following description is correct?

The number of users is 300, the concurrency rate is 70%, and the terminal supports 2.4GHz and 5GHz frequency bands. According to the maximum number of dual-band access users per AP...

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= ().

For outdoor long-distance point-to-point backhaul, the antenna of ( ) should be selected.

Which of the following descriptions of power splitters and couplers is correct?

If an AP has been added offline, the AP can go online directly.

Which of the following command can view the current version information?

Which of the following commands can view the current configuration of AC?