[Oct 21, 2022] Reliable GB0-342-ENU Exam Tips Test Pdf Exam Material [Q79-Q99] : Free Exams Dumps Materials : http://exams.dumpsmaterials.com

NO.79 Use waterproof tape to waterproof the joint parts of the antenna to _______

Prevents disconnection of each connector part

Prevents connector from being damaged by electric shock

Prevent water from entering each splice connector and seeping into the feeder cable and causing damage to the feeder cable

Protection against electromagnetic interference

NO.80 The RF interface type of the H3C indoor AP is ______

N-type male

N-type female

SMA male

SMA female

SMA reverse polarity male

SMA reverse polarity female

NO.81 Several wireless technologies currently used in the industry include:

802.11ac

FDD-LTE

IrDA

BlueTooth

802.11n

NO.82 If the Fit AP fails to register successfully during the Layer 2 registration process, the following information can be obtained by debug lwapp on the WLC side:
*Oct 17 14:38:05:117 2008 5002 LWPS/7/Event : Discovery request message received from AP with WA2220E-AG Model and Serial-ID 210235A22WC07C000300
*Oct 17 14:38:05:127 2008 5002 LWPS/7/Error : AP not found for Serial-ID 210235A22WC07C000300
*Oct 17 14:38:05:137 2008 5002 LWPS/7/Error : Discovery request is dropped due to Processing failed
Then the reason why the FIT AP cannot be successfully registered is:

Wrong serial number configured on AC

Wrong serial number configured on AP

Wrong version information for AC

AP’s version information is wrong

NO.83 When the H3C AP is directly connected to the wireless switch or connected through a Layer 2 network, the correct registration steps are:
1. The AP sends a Layer 2 broadcast discovery request message to try to contact a wireless switch
2. The AP downloads the latest software version and configuration from the wireless switch
3. The wireless switch that receives the discovery request message will check whether the AP has the right to access the machine, and if so, it will respond with a discovery response
4. AP obtains IP address through DHCP server
5. The AP starts to work normally and the wireless switch exchanges user data packets

12345

41235

14235

41325

NO.84 H3C wireless controller supports both local authentication and Radius for MAC authentication. The user name and password are both: (Advanced test)

111

H3C

Client MAC

WX5002

NO.85 The wireless user speed limit methods supported by FAT AP include:

Dynamic speed limit (users under the same SSID share the set bandwidth)

Speed limit based on client signal strength

Static rate limit (specify per-user bandwidth limit under the same SSID)

Rate limit based on client negotiation rate type

NO.86 On the horizontal plane pattern, on both sides of the maximum radiation direction, the angle between the two directions in which the radiated power drops ______ is called the horizontal beam width

3dB

6dB

10dB

1dB

NO.87 How much is the traditional sub-carrier reduced in 802.11AX mode (single-choice/multiple-choice question)

1/3

1/2

1/4

1/6

NO.88 In the wireless network survey and design, when covering floors and areas with business requirements, the received signal strength of more than 95% of the target coverage area should be greater than or equal to _____ (experience value, applicable to most wireless network cards) Key coverage Regional signal strength should be greater than or equal to ____

-75dBm; -70dBm

-90dBm; -85dBm

-80dBm; -75dBm

-85dBm : -80dBm

NO.89 Which of the following statements about AP equipment grounding specifications is correct?

The indoor AP should be grounded. The outdoor AP, antenna and lightning protection device, and PoE module must be grounded. The grounding resistance should be less than 5 ohms. The grounding wire should not exceed 30 meters.

When the multi-strand ground wire (generally not single-core) is connected to the ground bar, a ground terminal (copper nose) must be installed. The size of the ground terminal should be consistent with the wire diameter, and the pressure (welding) connection should be firm.

The contact part between the ground terminal and the ground bar should be flat and tight, without rust and oxidation, and should be coated with Vaseline or butter to prevent rust when connecting different materials.

The principle of fixing the ground wire of the PVC pipe is the same as that of the RF wire. When installing wire grooves, the fixed spacing of wire grooves is 0.3 meters. The radius of curvature of the ground wire should be greater than 130mm.

NO.90 Regarding the description of the data forwarding principle between H3C wireless controller and AP, which of the following are correct?

Establish IPinIP tunnels between the wireless switch and AP, the wireless switch regards these tunnels as virtual ports

Any data packet of the wireless client STA will be handed over to the wireless switch by the AP through the IP in IP tunnel, and will be forwarded uniformly by the wireless switch

After the wireless switch receives the user’s data from the IPinIP tunnel, it first de-encapsulates the tunnel, and then performs data exchange. If the outgoing interface is a tunnel, it adds tunnel encapsulation to the data packet again until the exchange reaches the farthest end.

The IPinIP tunnel established between the wireless switch and the AP uses a TCP connection

NO.91 For area coverage planning with large radius and few concurrent users, the correct statement is

This type of area is the main WLAN indoor application place, such as comprehensive function area, hotel room, etc. This type of area can be divided into small areas according to rooms, walls, columns, etc., which can be regarded as multiple areas with small radius and few users The combination

This type of area can be covered by low-power APs. The coverage method can be carried out according to the coverage method of the area with small radius and few users. When covering, it is necessary to pay attention to the frequency isolation of each AP.

Such areas can be covered by an indoor distributed system, and the antenna feeder system of the original wireless network (such as PHS, CDMA, etc.) can be used to combine the WLAN system, so as to achieve the effect of one AP covering a large area.

When deploying multiple APs in such areas, it is necessary to consider the channel division between APs. The APs are deployed with poor channels to reduce interference. For example, when three APs are deployed, the channels of AP1, AP2, and AP3 can be separated from each other. Set to 1, 6, 11

NO.92 Which of the following are ideas for WLAN optimization

WLAN optimization helps to implement wireless solutions in various scenarios

WLAN optimization helps wireless networks become the perfect engine for customer business development

WLAN optimization is a very good way to solve product problems

WLAN optimization is the only way to achieve high quality goals throughout the wireless network life cycle

NO.93 For coverage planning with small radius and multiple areas of concurrent users, the correct statement is _____.

The content of this type of area is relatively open and there is no wall blocking, but due to the number of access users, multiple APs are required for coverage.

When deploying multiple APs, the interval between the installation locations of each AP needs to be considered.

Generally speaking, open office areas, large lecture halls, large conference centers, etc. belong to such areas.

When deploying multiple APs in such areas, it is necessary to consider the division of channels between APs. Crossover deployment is adopted between APs to reduce interference. For example, when 3 APs need to be deployed, the channels of AP1, AP2, and AP3 can be set is 1 , 6 , 11

NO.94 The highest rate that can be negotiated with an 802.11n wireless network card using a 20MHz channel bandwidth for an 802.11n-enabled AP is _______

54Mbps

108Mbps

150Mbps

300Mbps

NO.95 When 802.11n works in the 2.4GHz frequency band, the number of non-interfering channels that can be provided in the 40-bandwidth mode is ______.

NO.96 Methods to Avoid Signal Interference in Comprehensive Office Areas

The AP adopts dual-band equipment to expand the bandwidth port

The antenna is not easy to be too high, you can choose a narrow lobe antenna

Make full use of partitions and load-bearing walls to reduce co-channel interference

Reduce cell size and minimize co-channel interference

NO.97 Generally speaking, if the modulation method used is more complicated, the transmission rate obtained is ______, and the coverage of the wireless signal is ______.

higher; smaller

lower; smaller

higher; bigger

lower: bigger

NO.98 it ap cannot be registered to the controller, which of the following commands can be used to view (multiple choice)

debugging wlan Iwapp error

debugging wlan Iwapp event

debugging wlan Iwapp packet control send

debugging wlan Iwapp packet control receive

NO.99 The correct description of an area with a small radius and few concurrent users is:

Generally, the radius of such area is less than 60m, and there are not many users accessing it.

Generally speaking, small meeting rooms, bars, cafes, residential homes, etc. belong to this type of area.

When planning the coverage of residential households, the AP placement location should be selected reasonably to take into account the wireless signal coverage of each room.

Generally speaking, one AP can meet the requirements of wireless signal coverage and the number of users in such areas. The key is to choose the appropriate AP installation location and installation method.