Feb-2022 Latest ITExamSimulator H12-311 Exam Dumps with PDF and Exam Engine Free Updated Today!
Following are some new H12-311 Real Exam Questions!
NEW QUESTION 26
What is the range of working frequency specified by China in the 2.4 GHz band?
- A. 2.471 GHz-2.497 GHz
- B. 2.4 GHz-2.4835 GHz
- C. 2.4465 GHz-2.4835 GHz
- D. 2.445 GHz-2.475 GHz
Answer: B
NEW QUESTION 27
Regarding the networking architecture of AC+Fit AP, which of the following description is wrong?
- A. It can enhance service QoS, security and other functions through AC.
- B. AP itself has zero configuration and is suitable for large-scale networking.
- C. AP cannot work alone and need to be maintenance and management by AC centralized agent.
- D. Management of APs and users must be implemented through the network management system
Answer: D
NEW QUESTION 28
Which of the following options will cause users to not find a wireless network signal (Select 2 Answers)?
- A. The user wireless network card is not enabled or the wireless network card hardware switch is not turned on.
- B. User wireless network card driver is abnormal
- C. The wireless controller is configured with user isolation
- D. AP is configured with 5G priority, resulting in 2.4G wireless client not searching for signals.
Answer: A,B
NEW QUESTION 29
The AP can provide power and data transmission through the POE switch.
- A. True
- B. False
Answer: A
NEW QUESTION 30
The correct description of WEP encryption is ().
- A. The length of the IV in WEP encryption is 48 bits
- B. WEP encryption allows devices to store the four keys at the same time
- C. WEP encryption uses a stream encryption algorithm
- D. WEP encryption joined the IV to destroy key regularity
Answer: B,C,D
NEW QUESTION 31
Which algorithm is used for CCMP encryption?
- A. AES
- B. Michael
- C. RC4
- D. SMS4
Answer: A
NEW QUESTION 32
Radio frequency mainly uses spread spectrum technology.
Which of the following technologies belong to Spread 2 Answers?
- A. FHSS
- B. OFDM
- C. DSSS
- D. QPSK
Answer: A,C
NEW QUESTION 33
When the two-channel center frequency distance is less than or equal to 25 MHz, there is an overlapping area between the channels, and there may be some interference. Therefore, in order to avoid adjacent channel interference in adjacent area channel planning, the same channel is not allowed.
- A. False
- B. True
Answer: A
NEW QUESTION 34
802.11 has three frame types, what are they? (Multiple choice)
- A. Data frame
- B. Business frame
- C. Management frame
- D. Control frame
Answer: A,C,D
NEW QUESTION 35
Which of the following is the command to restart the AC6605?
- A. <AC6605> reboot
- B. [AC6605] reload
- C. <AC6605> reload
- D. [AC6605] reboot
Answer: A
NEW QUESTION 36
Which of the following standards organizations is implementing WLAN technology interoperability for WLAN device authentication?
- A. IEEE
- B. IETF
- C. WiFi Alliance
- D. FCC
Answer: C
NEW QUESTION 37
In the WLAN, ACK frame belongs to what type of frame?
- A. Data Frame
- B. management frames
- C. Control Frame
- D. empty data frame
Answer: C
NEW QUESTION 38
The MEth0/0/1 interface on the AC6605 is used for inband network management. The default address is 192.168.1.1/24 and cannot be modified.
- A. False
- B. True
Answer: A
NEW QUESTION 39
In the WDS network, which links can be established with the leaf AP? (Multiple Choice)
- A. Root AP
- B. Master AP
- C. Leaf AP
- D. Middle AP
Answer: A,D
NEW QUESTION 40
When did the initial application of the wireless network begin?
- A. After 2000
- B. Late 20th century
- C. During the first world war
- D. During the Second World War
Answer: D
NEW QUESTION 41
What kinds of VLANs are involved in the WLAN configuration (Select 3 Answers)?
- A. Service VLAN
- B. Management VLAN
- C. Authentication VLAN
- D. User VLAN
Answer: A,B,D
NEW QUESTION 42
802.11b supports () channels in the United States, where one channel does not overlap?
- A. 14; 6
- B. 11;6
- C. 11;3
- D. 14;3
Answer: C
NEW QUESTION 43
The power of Huawei indoor put installation is commonly () mW.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 44
The following statement is correct (Select 3 Answers).
- A. WPA2 PSK authentication requires the user to enter a username and password to connect
- B. WAPI is China's wireless LAN national standard system
- C. WPA2 uses 802.1X authentication
- D. When the user obtains the IP address successfully, the user triggers the HTTP packet of the user. At this time, the user is forced to redirect to the portal server to perform the authentication process.
Answer: B,C,D
NEW QUESTION 45
What is the security policy based on user authentication that is currently widely used in enterprise networks? (Multiple Choice)
- A. WPA1 PSK+TKIP/CCMP
- B. WPA2 802.1X+TKIP/CCMP
- C. WPA1 802.1X+TKIP/CCMP
- D. WPA2 PSK+TKIP/CCMP
Answer: B,C
NEW QUESTION 46
What is the correct description of the thin AP below?
- A. Thin AP is also known as a wireless router.
- B. Thin AP can implement 802.1X authentication, encryption and other functions. Others such as QoS and roaming functions are implemented on the wireless controller.
- C. Thin AP cannot be configured separately and must be used with the wireless controller.
- D. Thin AP is gradually replaced by fat AP due to lack of function.
Answer: C
NEW QUESTION 47
What kind of technology belongs to Wireless MAN in the folllowing?
- A. WLAN
- B. Bluetooth
- C. 2G/3G
- D. WiMAX
Answer: C
NEW QUESTION 48
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