GB0-342-ENU Practice Test Questions Answers Updated 340 Questions
GB0-342-ENU dumps & H3CSE WLAN Certification Sure Practice with 340 Questions
NEW QUESTION 73
There are several delivery modes for WLAN optimized servers in general ?
- A. Project research cooperation
- B. People-delivered projects
- C. Software entity sales
- D. Selling hardware products
Answer: A,B,C
NEW QUESTION 74
In wireless authentication, if the 802.1x authentication method is used, the EAP method that is not included is. (Advanced Talent Test)
- A. EAP-MD5
- B. PEAP
- C. EAP-TLS
Answer: A
NEW QUESTION 75
The protocol used for management and control between the wireless controller and the FIT AP is
- A. TAPA
- B. WAI
- C. LWAPP
- D. IACTP
Answer: C
NEW QUESTION 76
The media access mechanism of an 802.11 network is ______. In this mechanism, when the sender detects that the media is idle _______.
- A. CSMA/CA: After waiting for the IFS time length, start a timer Back-off Timer, and start sending messages when the timer counts down to zero.
- B. CSMA/CA: After waiting for the IFS time length, the data will be sent immediately. If there is a conflict, a timer Back-off timer will be started, and the message will be resent when the timer counts down to zero.
- C. CSMA/CD: After waiting for the IFS time length, send data immediately, if a conflict occurs, start a timer Back-off-timer, when the timer counts down
- D. CSMA/CD: After waiting for the IFS time length, start a timer Back-off Timer, and start sending messages when the timer counts down to zero.
Answer: A
NEW QUESTION 77
Thicker cables generally have a higher cost, but the loss introduced by them is small, the bending radius is small, and the construction is convenient.
Is the above statement correct?
- A. error
- B. correct
Answer: A
NEW QUESTION 78
The correct description about the CAPWAP protocol is ____.
- A. CAPWAP defines the data encapsulation and transmission mechanism between AC and FITAP.
- B. H3C's AC listening port number: 5247 (data tunnel), 5246 (control tunnel).
- C. Centralized configuration delivery, user access management and roaming management of the AC to FITAP.
- D. CAPWAP uses UDP client/server model communication between FITAP and AC.
Answer: A,B,C,D
NEW QUESTION 79
Place the antenna at a high place and maintain a certain down-tilt angle to cover the outdoor space; it is suitable for WLAN coverage in outdoor open/semi-open areas.
- A. error
- B. correct
Answer: B
NEW QUESTION 80
The correct statement about the wireless architecture of rail transit is:
- A. The vehicle AP adopts the FAT mode, and uses the MLS P protocol to quickly switch between the trackside AP and the trackside AP.
- B. Wireless link fast handover is realized based on key parameters and handover rules
- C. The trackside AP uses the FIT AP, which is interconnected with the wireless controller through the access switch through the network cable
- D. When the vehicle AP is switched, the MLS P protocol agent sends a protocol message to update the trackside network device table entry
Answer: A,B,C,D
NEW QUESTION 81
The 802.11 protocol essentially provides a link layer access service for wireless clients. If you need to query the IP address of the wireless client, which of the following commands can be used?
- A. arp-snooping enable
- B. user-isolation enable
- C. DHCP-snooping enable
- D. port-security enable
Answer: A
NEW QUESTION 82
The 802.11 protocol stipulates that a radio chip (radio) can define at most ____ groups of WEP keys at the same time, and the length of the static Key in the WEP key is ____ bits, and the length of the IV vector is ______ bits.
- A. 4;40/104;24
- B. 40/104; 24
- C. 4; 64/128; 48
- D. 64/128; 48
Answer: A
NEW QUESTION 83
In the 802.11i standard, the protocol that needs to be encrypted by hardware is ______, so it needs network card hardware support.
- A. WEP
- B. AES
- C. PSK
- D. TKIP
Answer: B
NEW QUESTION 84
Regarding the description of the data forwarding principle between H3C wireless controller and AP, which of the following are correct?
- A. 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
- B. 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.
- C. The IPinIP tunnel established between the wireless switch and the AP uses a TCP connection
- D. Establish IPinIP tunnels between the wireless switch and AP, the wireless switch regards these tunnels as virtual ports
Answer: A,B,D
NEW QUESTION 85
It is true that the sequence of PSK certification, 802.1X certification and antenna 802.11 step-by-step competition is correct.
- A. PSK authentication occurs during the authentication process, and the association process starts after the authentication is completed
- B. 802.1X authentication occurs during the authentication process, and the association process starts after the authentication is completed. The question bank is required for the association process.
- C. PSK authentication occurs after the association is completed, and the authentication and encryption information exchange with the AP is completed through eapol
- D. 802.1X authentication occurs after the association is completed, and the authentication and encryption trust interaction with the AP is completed through eapol
Answer: C,D
NEW QUESTION 86
The following devices that generate 2.4GHz electromagnetic waves are
- A. Bluetooth phone
- B. Traditional landline
- C. Microwave oven
- D. AP
Answer: A,C,D
NEW QUESTION 87
When FATAP does not obtain an address through DHCP, the default address is ?
- A. 192.168.100.1
- B. 192.168.0.50
- C. 192.168.0.1
- D. 192.168.0.100
Answer: B
NEW QUESTION 88
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 ______.
- A. 64; 64; 48
- B. 50; 50; 40
- C. 40; 40; 30
- D. 20; 20; 15
Answer: D
NEW QUESTION 89
By default, the user isolation feature of the WA1208E is . (The old question is gone now)
- A. Disable
- B. enable
Answer: B
NEW QUESTION 90
The significance of network survey includes:
- A. Know the site to implement the installation
- B. Improve equipment ratio efficiency and protect customer investment
- C. Reduce post-maintenance costs
- D. The realization of the wireless network to best meet the needs of customers
Answer: A,B,C,D
NEW QUESTION 91
The correct description of an area with a small radius and few concurrent users is:
- A. Generally, the radius of such area is less than 60m, and there are not many users accessing it.
- B. 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.
- C. Generally speaking, small meeting rooms, bars, cafes, residential homes, etc. belong to this type of area.
- D. 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.
Answer: A,B,C,D
NEW QUESTION 92
The wireless network authentication method for user authorization authentication by linking with the radius server is. (only for advanced exam)
- A. WEP
- B. EAP-MD5
- C. WPA-PSK
- D. PEAP
Answer: B,D
NEW QUESTION 93
The transmit power is 7dBm, what is the corresponding transmit power?
- A. 20mw
- B. 10mw
- C. 5mw
- D. 7mw
Answer: C
NEW QUESTION 94
What are the working frequency bands of WLAN?
- A. 5GHZ
- B. 2.4GHZ
- C. 2GHZ
- D. 54GHZ
Answer: A,B
NEW QUESTION 95
Which of the following does not belong to the encryption methods supported by the wireless controller is
- A. WEP
- B. WPA
- C. WPA2
- D. WSM
Answer: D
NEW QUESTION 96
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