H12-311 Pre-Exam Practice Tests | (Updated 261 Questions)
Valid H12-311 Exam Q&A PDF - One Year Free Update
NEW QUESTION 120
If the interface of the switch is enabled with PoE, only those POE powered devices can be connected to these interfaces.
- A. False
- B. True
Answer: A
NEW QUESTION 121
What are the prerequisites for users to achieve three-layer roaming? (Multiple choice)
- A. The SSID released by the two APs of the user roaming switch must have the same authentication method.
- B. Two APs for user roaming switch must have the same SSID
- C. User roaming requires two AP signals to be covered with overlapping areas
- D. Two APs for user roaming switch must have the same VLAN
Answer: A,B,C
NEW QUESTION 122
The following description of the splitter and coupler is correct .
- A. Power splitter and coupler are unequal power distribution
- B. Power splitter and coupler are equal power allocation
- C. Power splitter is equal power distribution, coupler is unequal power distribution
- D. Power splitter is unequal power distribution, coupler is equal power distribution
Answer: C
NEW QUESTION 123
How much bandwidth is each 802.11g frequency band channel?
- A. 50 MHz
- B. 20 MHz
- C. 25 MHz
- D. 22 MHz
Answer: B
NEW QUESTION 124
What is correct in the following options (Select 3 Answers)?
- A. SSID technology can divide a wireless local area network into several sub-networks that require different authentication. Each sub-network needs independent authentication. Only authenticated users can enter the corresponding sub-network to prevent unauthorized access. The user enters the network.
- B. Users can implement roaming under different SSIDs.
- C. The BSSID is actually the MAC address of the AP, which is used to identify the BSS managed by the AP, and maps the BSSID and SSID in the same AP.
- D. The SSID is the same in an ESS, but the BSSID corresponding to each AP in the ESS is different. If an AP can support multiple SSIDs at the same time, the AP will assign different BSSIDs to correspond to these SSIDs.
Answer: A,C,D
NEW QUESTION 125
The description of the following WLAN networking diagram is wrong.
- A. You can use the AC as the DHCP server to assign an IP address to the AP.
- B. PVIDA of the management VLAN can be configured on the access switch.
- C. You cannot use an aggregation switch to assign an IP address to a STA.
- D. The picture is a side-by-side networking
Answer: C
NEW QUESTION 126
Which of the following is the command to restart the AC6605?
- A. <Quidway> reboot
- B. <Quidway> reload
- C. [ Quidway] reboot
- D. [Quidway]reload
Answer: A
NEW QUESTION 127
How many channels do China support in 2.4 GHz frequency band?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 128
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 129
If not configured, what is the default authentication method supported by the AP?
- A. no-auth
- B. mac-auth
- C. mac-sn-auth
- D. sn-auth
Answer: B
NEW QUESTION 130
In 1999, the IEEE 802.11a standard was developed. The standard specifies that the WLAN operating frequency band is 5.15~5.825GHz, and the data transmission rate reaches 11Mbps.
- A. False
- B. True
Answer: A
NEW QUESTION 131
MIMO (Multiple input and multiple output), that is, multiple input and multiple output, wireless access points and clients using 802.11n technology can simultaneously transmit data using up to three spatial streams, and the theoretical rate can reach 600 Mbps.
- A. False
- B. True
Answer: A
NEW QUESTION 132
If an enterprise wireless network networking mode is direct forwarding, the thin AP can convert the 802.11 data packet into an Ethernet packet, and then encapsulate the packet into a CAPWAP encapsulation and transmit the data packet to the AC through the CAPWAP tunnel.
- A. False
- B. True
Answer: A
NEW QUESTION 133
Because 802.11a supports the same maximum rate as 802.11g supports, the 802.11a protocol is backward compatible with the 802.11g protocol.
- A. False
- B. True
Answer: A
NEW QUESTION 134
What is the name of the first radio communication network based on packet technology?
- A. ALOHAnet
- B. INTERNET
- C. ARPANet
- D. NSFnet
Answer: A
NEW QUESTION 135
Which of the following is included in the CSMA/CA mechanism in 802.11 WLAN? (Multiple Choice)
- A. Multiple access
- B. Conflict avoidance
- C. Carrier sensing
- D. Conflict detection
Answer: A,B,C
NEW QUESTION 136
What is the working frequency band used in the original 802.11 protocol?
- A. 2.4 GHz
- B. 2.0 GHz
- C. 5 GHz
- D. 900 MHz
Answer: A
NEW QUESTION 137
In the depolyment of WDS, the bridge network model including? (Multiple choice)
- A. Relay Bridge
- B. Multipoint to Multipoint Way
- C. Point to Multi-point Mode
- D. Point-to-Point Mode
Answer: A,C,D
NEW QUESTION 138
Which of the following options is in the 5GHz band supported by China?
- A. 5.15~5.25GHz
- B. 5.725~5.825GHz
- C. 5.25~5.35GHz
- D. 5.725~5.850GHz
Answer: D
NEW QUESTION 139
If an AP has been added offline, the AP can go online directly.
- A. True
- B. False
Answer: A
NEW QUESTION 140
Which of the following commands can be used to view the AP running system version? (Multiple Choice)
- A. display ap update status all
- B. display ap version all
- C. display ap run-info ap-id x (x is the ID number of the AP)
- D. display ap all
Answer: B,C
NEW QUESTION 141
The AP can provide power and data transmission through the POE switch.
- A. True
- B. False
Answer: A
NEW QUESTION 142
Which of the following protocols can support both the 2.4 GHz band and the 5 GHz band?
- A. 802.11g
- B. 802.11n
- C. 802.11b
- D. 802.11a
Answer: B
NEW QUESTION 143
The networking mode can be divided into direct-connected networking and side-hanging networking based on the location of the AC on the network.
- A. True
- B. False
Answer: A
NEW QUESTION 144
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