[2021] H12-311 PDF Questions - Perfect Prospect To Go With ActualTestsQuiz Practice Exam
Huawei H12-311 Pdf Questions - Outstanding Practice To your Exam
NEW QUESTION 137
There are many video conferences in large companies, and QoS generally adopts the service model.
- A. DiffServ model
- B. IntServ model
- C. Best Effort model
- D. FIFO model
Answer: D
NEW QUESTION 138
Which of the following are common sources of WLAN interference? (Multiple choice)
- A. Cordless phone
- B. Microwave oven
- C. Remote control
- D. Bluetooth transmission equipment
Answer: A,B,D
NEW QUESTION 139
When an 802.11 packet sent by a STA enters the Ethernet through the AP, it is converted into an 802.3 packet, which is not a priority mapping method.
- A. According to the order in which the packets arrive at the AP
- B. No priority mapping
- C. Different priorities according to different VAP settings
- D. Map the priorities according to UP.
Answer: A
NEW QUESTION 140
The conditions for switching triggers are generally set (Select 2 Answers).
- A. Start the switch when the network speed is very slow when it is associated with the original AP.
- B. Set the signal strength ratio between the current AP and the neighbor AP, and switch to the threshold.
- C. Start the switch after the STA reaches a certain distance from the original AP.
- D. Check the packet loss rate and start switching when the packet loss rate reaches a certain value.
Answer: B,D
NEW QUESTION 141
Which of the following option is a prerequisite for starting load balancing function based on AP?
- A. AP is under the management of same AC, and signal has overlap between AP
- B. The output power of the AP is consistent.
- C. AP belongs to the same type
- D. STA can scan AP which can process load balancing each other
Answer: A
NEW QUESTION 142
In Huawei eSight, the method of adding WLAN devices includes (Select 3 Answers).
- A. Add script
- B. Add automatically
- C. Add in batches
- D. Add manually
Answer: B,C,D
NEW QUESTION 143
For a wireless network with WPA2 PSK authentication and SSID broadcast, the user can double-click on the SSID and enter the correct username and password to access the network.
- A. False
- B. True
Answer: A
NEW QUESTION 144
What are the processes for access WLAN users? (Multiple choice)
- A. Certified
- B. Security check
- C. Scan to find surrounding wireless services
- D. Linking
Answer: A,C,D
NEW QUESTION 145
Which of the following is wireless LAN standards originally formulated by IEEE?
- A. IEEE 802.11
- B. IEEE 802.10
- C. IEEE 802.12
- D. IEEE 802.16
Answer: A
NEW QUESTION 146
For outdoor WLAN coverage, the following statement is correct (Select 3 Answers).
- A. The feeder interface must match the selected antenna
- B. Outdoor antennas should not blindly pursue high gain
- C. The length of the feeder must not exceed 2 meters.
- D. The higher the antenna gain, the stronger the antenna directivity and the weaker the radiation gain directly below the antenna.
Answer: A,B,D
NEW QUESTION 147
The BSSID indicates the data link layer MAC address of each VAP on the AP, and is used to identify the BSS managed by the AP.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 148
For better coverage, try to make the AP signal pass through the wall.
- A. Parallel
- B. 0
- C. Vertical
- D. 1
Answer: C
NEW QUESTION 149
The description of the following WLAN networking diagram is wrong.
- A. You cannot use an aggregation switch to assign an IP address to a STA.
- B. PVIDA of the management VLAN can be configured on the access switch.
- C. The picture is a side-by-side networking
- D. You can use the AC as the DHCP server to assign an IP address to the AP.
Answer: A
NEW QUESTION 150
What are the common troubleshooting methods in WLAN networks? (Multiple choice)
- A. Classification troubleshooting method
- B. Segmentation troubleshooting method
- C. Replacement troubleshooting method
- D. Block troubleshooting method
Answer: B,C,D
NEW QUESTION 151
The gain of the antenna A is 11 dBi, and the gain of the antenna B is 8 dBi, it can be said that, how much is the gain of the antenna A larger than that of the antenna B?
- A. 3 dBd
- B. 3 dBi
- C. 3 dB
- D. Uncertain
Answer: C
NEW QUESTION 152
Rural households can use the outdoor AP+CPE network of the base station to convert the WLAN signal into a wired signal to connect to the computer and support dial-up access.
- A. False
- B. True
Answer: B
NEW QUESTION 153
When deploying APs on multiple floors of a building, the factor to be aware of is (Select 3 Answers).
- A. Material of the wall
- B. Unified planning channel
- C. In order not to affect the appearance, the AP should be hidden in the ceiling
- D. Other interference signals
Answer: A,B,D
NEW QUESTION 154
The equipment manufacturer can usually be judged according to ( ).
- A. MAC address
- B. Channel
- C. SSID
- D. Encryption type
Answer: A
NEW QUESTION 155
What are the general methods for solving co-channel interference (ABD) (Select 3 Answers).
- A. Natural isolation using obstacles
- B. Multi-directional coverage using omnidirectional antennas
- C. Reasonable frequency reuse to ensure that the same channel does not appear in the same or adjacent coverage area
- D. Adjust AP transmit power and adjust antenna feed
Answer: A,C,D
NEW QUESTION 156
The following statement about antenna classification is correct (Select 2 Answers)?
- A. Classification by direction: omnidirectional antenna, directional antenna, etc.
- B. Classification by use: short wave antenna, ultrashort wave antenna, microwave antenna, etc.
- C. Classification by working frequency band: communication antenna, TV antenna, radar antenna, etc.
- D. Classification by shape: wire antenna, planar antenna, etc.
Answer: A,D
NEW QUESTION 157
When only one interface of the AC is connected to the aggregation layer switch, the user traffic is directly transmitted through the aggregation switch to the public network.
- A. Side-by-side mode + direct forwarding
- B. Side-by-side mode + tunnel forwarding
- C. Direct connection mode + tunnel forwarding
- D. Direct connection mode + direct forwarding
Answer: A
NEW QUESTION 158
When the AC is a side-by-side networking, if the data is directly forwarded, the data stream () AC; if the data is in tunnel forwarding mode, the data Stream AC.
- A. No pass, pass
- B. After passing through not
- C. No pass, no pass
- D. After passing through
Answer: A
NEW QUESTION 159
What is the parameter used in the 802.11 frame to check the integrity of the received frame?
- A. Sequence control bits
- B. Frame Control
- C. FCS
- D. Duration
Answer: C
NEW QUESTION 160
If the AP wants to obtain the IP address of the AC through the DNS server, first obtain the IP address of its own IP address, DHCP server, and DNS.
- A. False
- B. True
Answer: B
NEW QUESTION 161
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