Check the Free demo of our GB0-342-ENU Exam Dumps with 340 Questions [Q46-Q65]

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Check the Free demo of our GB0-342-ENU Exam Dumps with 340 Questions

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Q46. Which of the following descriptions about 802.11g WLAN devices is correct

802.11g devices are compatible with 802.11a devices

802.11g devices are compatible with 802.11b devices

The modulation mode of 802.11g 54Mbps is the same as that of 802.11a 54Mbps, both of which use OFDM technology

802.11g provides the same maximum speed as 802.11b

Q47. The IRF incense stacking networking methods supported by the wireless controller include ____.

IRF on the same frame as the business board

Dual cross-exchange IRF

Dual Direct IRF

Service board cross-frame IRF

Q48. Which of the following substances attenuates the WLAN signal the most

glass

Bricks

Metal

human body

Q49. When using the 802.11a protocol, the number of non-overlapping channels that can be used when the area code is CN is _____.

Q50. What frequency band does the WLAN network use?

825~835

1700~1710

1900~1915

2400~2483.5

Q51. According to the working principle of the wireless air interface competition mechanism (CSMA/CA), it is recommended that the number of nodes participating in the competition should not exceed _____, because when the contention points reach ______, the air interface conflict will increase sharply. To ensure the effective bandwidth of users, it is recommended that the number of concurrent users under each AP does not exceed ______.

20; 20; 15

40; 40; 30

50; 50; 40

64; 64; 48

Q52. The shape characteristics of the H3C indoor AP RF connector are:

Male thread + pin

Male thread + hole

Female thread + hole

Female thread + needle

Q53. When using a WLAN dual-band combiner for indoor distributed system combining and expansion, the following statements are correct:

The WLAN combination expansion scheme can increase the capacity of the entire WLAN system by using different channel combination of two APs.

When using this combination expansion scheme, the insertion loss introduced by the WLAN combiner is about 2dB, which needs to be taken into account when calculating the signal strength.

At present, due to the limitation of device characteristics, this expansion scheme only supports the expansion of channel 1 and channel 11. However, which of the two ports of the combiner is connected to the AP of channel 1 and which is connected to the AP of channel 11 is not strictly required. limit.

During the project implementation, if using Fit AP for WLAN dual-band combination, it is recommended to enable the load sharing function of wireless controller + Fit AP, which can enable wireless users to connect to two APs evenly and avoid users on one AP. Many, while few users on another AP happen.

Q54. During a wireless network survey, which of the following statements is true:

When conducting wireless network survey, it is necessary to ensure that the coverage is the same as the actual application demand area. When the signal coverage is affected by obstacles and the wireless signal coverage cannot meet the actual application demand area, it needs to be adjusted in time. Deployment scenario.

When deploying multiple APs indoors, in order to meet the wireless application requirements of a certain user density, it is necessary to select the appropriate AP installation location, installation method, transmission power, etc., so as to reduce the visible signal in the three-dimensional space as much as possible. quantity.

When planning signal coverage in three-dimensional space, the problem of signal leakage across floors is unavoidable. Therefore, the degradation of wireless link quality caused by signal leakage needs to be considered and optimized.

When deploying multiple APs indoors, in order to ensure better signal strength indicators, the APs should work at the maximum transmit power, and attention should be paid to the channel division between APs.

Q55. Which of the following belong to H3C’s optimization technology innovation based on WLAN service application?

Wireless Service Fair Queue Scheduling Mechanism

Wireless user data rate limit

Isolation of Layer 2 service traffic for wireless users

Suppresses the impact of weak signal clients on network performance

Q56. The smooth switching of FAT/FIT AP working mode mainly comes from ()

In the initial stage of network construction, APs work in FAT mode to meet the needs of small-scale networking

In the initial stage of network construction, make APs work in FIT mode, and add wireless controllers to meet the needs of large-scale networking

Purchase FIT/FAT dual-mode AP to protect the original investment

Change the working mode through commands to achieve smooth upgrade and simplify management operations

Q57. (Multiple choice) The following wireless controller models that only support the local forwarding mode are.

WX3024H-L

WX3010H-L

LSQM1WCMX40

WX5560H

Q58. Currently, can the H3C wireless controller be used with FITAP from other manufacturers?

Yes

Q59. 802.11g/n supports 1-14 channels, each country supports different channels, the channels used in China

1-11

1-12

1-13

1-14

Q60. The occupied bandwidth of each channel in 802.11g in ISM is

5.22Mhz

16.6Mhz

22Mhz

40Mhz

Q61. Generally, it has a strong attenuation effect on the wireless signal, and the site survey is the obstacle that needs special attention.

Metal

Reinforced concrete

Glazed Ceramic Wall

glass

Q62. The following APs that belong to the Terminator split pass-through mode are:

WTU420H

WTU430H

WTU430

WTU430H-IOT

Q63. Wireless positioning has requirements for signal strength, and the optimal area is when the signal is greater than ____ (dbm).

-75

-65

-55

-85

Q64. Which type of V7 wireless license authorization file is (single choice)

210235A0UDC12B000105.did

210235A0UDC12B000105.ak

210235A0UDC12B000105

Q65. Which of the following technologies is the technical improvement of 802.11n to the original 802.11a/b/g/

OFDM-MIMO

40MHZ channel bonding

frame aggregation

Short GI

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Check the Free demo of our GB0-342-ENU Exam Dumps with 340 Questions [Q46-Q65]

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