検証済みのGB0-342-ENU問題集と解答で合格保証もしくは全額返金 [2023年02月]
GB0-342-ENUのPDF問題集で2023年02月05日最近更新された問題
質問 16
The wireless network authentication method for user authorization authentication by linking with the radius server is. (only for advanced exam)
- A. EAP-MD5
- B. WEP
- C. PEAP
- D. WPA-PSK
正解: A,C
質問 17
The physical layer transmission bandwidth of the current mainstream WiFi protocol 802.11g is 54Mbps, but the available bandwidth above the actual transmission layer is about
- A. 32M
- B. 16M
- C. 24M
- D. 40M
正解: C
質問 18
What are the characteristics of wireless network scenarios in hospital wards? ( )
- A. There is a hidden danger of mutual interference between different signal systems
- B. High requirements for signal strength and coverage
- C. low user density
- D. High roaming requirements
正解: A,B,C,D
質問 19
Which of the following is the correct description of the room division system
Which of the following is the correct description of the principle of indoor distribution system combining is ______
- A. Limited by the number of users, the number of antennas connected to a single AP is recommended not to exceed 15
- B. The installation location of the AP should ensure that the Ethernet is reachable (less than 100 meters from the access switch), and it should be able to provide local power supply in the absence of a POE switch.
- C. The AP combining point must be at the level after the active device (mainly dry amplifier), because the active device cannot pass the wlan signal, and all wireless devices in the feeder-free system (including power dividers, cables, jumpers) etc.) must be able to support the WLAN frequency band (2.4GHZ~2.4835Ghz), and the attenuation control point is within a certain range.
- D. According to the actual measurement experience, the wlan signal power of the antenna port in the indoor distributed system is ideal at about 10dBm, and the minimum is not lower than 5dBm. Generally, the transmit power of the wlan AP combining point is at least not lower than 3G/GSM/ CDMA signal power
- E. It is generally not recommended to add a WLAN power amplifier behind the AP
正解: A,B,C,D,E
質問 20
There may be some differences between the AP deployment location during the survey and the actual deployment location of the AP during the project implementation. In order to ensure the accuracy of the survey data, the deployment position of the AP should be as consistent as possible with the actual installation position during the survey. The above statement is _____.
- A. correct
- B. error
正解: A
質問 21
The correct description about the CAPWAP protocol is ____.
- A. CAPWAP uses UDP client/server model communication between FITAP and AC.
- B. Centralized configuration delivery, user access management and roaming management of the AC to FITAP.
- C. H3C's AC listening port number: 5247 (data tunnel), 5246 (control tunnel).
- D. CAPWAP defines the data encapsulation and transmission mechanism between AC and FITAP.
正解: A,B,C,D
質問 22
The wireless controller models with a maximum number of managed APs of 6144 are
- A. WX5540H
- B. WX5560H
- C. LSQM1WCMX20
- D. LSQM1WCMX40
正解: B
質問 23
The theoretical maximum transmission rate of WLAN usually refers to the transmission rate of large-byte (1500 bytes) packets, but in most networks, there are many small-byte (below 250 bytes) packets, which will seriously affect the practical application of WLAN. performance, making it well below the theoretical maximum rate. The above statement is true.
- A. correct
- B. error
正解: A
質問 24
The signal strength RSSI displayed by the wireless device can directly reflect the quality of the link, but in fact, due to the fact that the noise floor is related to the environment and interference, it will change from time to time; while the SNR is relatively stable (for a fixed environment and transmit power), it can be considered and transmitted Power, the antenna used by the device, the distance of the device, and spatial attenuation are related, but after the device is installed, the SNR is often relatively fixed.
Which of the following statements about the relationship between bottom and RSSI is correct.
- A. In a fixed network, if the noise floor increases, the RSSI will decrease; otherwise, if the noise floor decreases, the RSSI will increase
- B. None of the above is true
- C. In a fixed network, if the noise floor increases, the RSSI will increase; otherwise, if the noise floor decreases, the RSSI will decrease
- D. In a fixed network, if the noise floor decreases, the RSSI will decrease; otherwise, if the noise floor increases, the RSSI will increase
正解: A
質問 25
H3CN to N cable is used to connect outdoor AP with N-type connector and outdoor antenna or used to extend feeder with N-type double female connector. There are three sizes of 1.83m, 4.5m and _______m to choose from. Purchasing this type of cable saves the trouble of field machining an N-type adapter cable
- A. 0
- B. 1
- C. 6.1
- D. 2
正解: A
質問 26
Contents and concerns of survey decision-making include ?
- A. Calculate the number of access switch ports connected to the AP, and make the number ratio according to the actual situation. At the same time, it needs to be considered in combination with the power supply mode (when using POE/POE+ mode, the output power of the switch).
- B. Determine the AP selection mode (11agn, 11ac, single and dual frequency) and the exact installation position
- C. Approve the total number of APs required for coverage, and add a 5%~10% margin
- D. Determine the antenna type corresponding to the AP (built-in antenna, ceiling antenna, outdoor antenna, etc.)
正解: A,B,C,D
質問 27
In the survey of outdoor bridge, the main consideration is the problem of wireless line of sight. The opposite end's antenna should be visible on the site, and there should be no obstacles in the middle. In general, solving the line-of-sight problem and the I Fresnel interval problem can be done by the following methods.
Which is the most simple and effective way?
- A. Raise the height of the antenna
- B. Choose a good repeater.
- C. Clear obstacles in the Fresnel area, such as cutting down trees.
- D. Choose a high-performance antenna, which can solve the "partially invisible" problem.
正解: A
質問 28
The following 802.11 PHY layer protocols using OFDM modulation technology are
- A. 802.11g
- B. 802.11e
- C. 802.11a
- D. 802.11b
正解: A,C
質問 29
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:
- A. Wrong version information for AC
- B. AP's version information is wrong
- C. Wrong serial number configured on AC
- D. Wrong serial number configured on AP
正解: C
質問 30
The 802.11 series of standards are only limited to the description of the MAC layer and the PHY layer.
- A. correct
- B. error
正解: A
質問 31
In H3C wireless controller, use the command "wan service--template 1 clear"; define service--template 1 as non-encrypted service--template, how to modify it to encrypted service--template?
- A. First enter " service-template disable " in the service-template 1 attempt, then enter " wlan service-template 1 crypto " in the global view, and finally enter in the service-template 1 view.
- B. wlan service-template 1 has been applied to the radio of the AP, you need to remove the application and then enter the command " wlan service-template 1 crypto ", if wlan service-template 1 is not applied, directly enter the command " wlan service -template 1 crypto " is enough.
- C. The encryption type of the existing wlan service-template 1 cannot be modified, only the original service template 1 can be deleted, and then a new service-template 1 can be created through the command wlan service-template crypto ° to modify it. For the purpose of encryption type, but if the wlan service-template1 has been applied to the radio of the AP, it needs to be deactivated first.
- D. Enter the command " wlan service-template 1 crypto "
正解: C
質問 32
The best way to determine the distance between wireless devices is to ______
- A. Estimating RF Signals Using Intense Linear Light Sources
- B. Visual transmission distance
- C. Calculate the transmission distance using the path loss calculation formula
- D. Field test with AP to determine transmission distance
正解: D
質問 33
The radio interface type of the H3C outdoor AP is:
- A. SMA male
- B. N-type male
- C. SMA reverse polarity female
- D. SMA female
- E. N-type female
- F. SMA reverse polarity male
正解: E
質問 34
There has been a download version between the AP and the AC, the possible reasons are
- A. There is not enough space on the AP to store the version
- B. AP hardware problem
- C. There is no version of this AP on the AC
- D. The version on the AC does not match the version on the AP
正解: A,B,C,D
質問 35
When the WLAN is combined with the operator's indoor distributed system, the FAT AP must be used instead of the FIT AP. The above statement is
- A. error
- B. correct
正解: A
質問 36
When WA2220X-AGP works as a bridge under 11a, by default, it can
- A. 4; 30
- B. 2; 15
- C. 4; 15
- D. 2; 30
正解: B
質問 37
Opportunities for WLAN market demand include (
- A. Wireless rounds
- B. Enterprise Wi-Fi
- C. WiFi Voice
- D. Logistics wireless inventory management
- E. Hotel wireless coverage
- F. Wireless Monitoring
- G. Wireless Campus
正解: A,B,C,D,E,F,G
質問 38
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GB0-342-ENU試験問題有効なGB0-342-ENU問題集PDF：https://www.jpntest.com/shiken/GB0-342-ENU-mondaishu