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NEW QUESTION 113
When a data frame is sent and confirmed, what is the time interval to wait before the next data frame is sent?
- A. PIFS
- B. IFS
- C. DIFS
- D. SIFS
Answer: C
NEW QUESTION 114
The CAPWAP protocol supports both Split Mac and Local Mac modes of operation.
- A. True
- B. False
Answer: A
NEW QUESTION 115
If an AP has been added offline, the AP can go online directly without authentication.
- A. True
- B. False
Answer: A
NEW QUESTION 116
What kind of technology belongs to Wireless MAN in the folllowing?
- A. 2G/3G
- B. WLAN
- C. Bluetooth
- D. WiMAX
Answer: A
NEW QUESTION 117
Which of the following are related parameters of the Traffic template (Select 2 Answers).
- A. Tunnel priority mapping strategy
- B. 802.3 Priority Mapping Policy
- C. CAC Policy
- D. ACK strategy
Answer: A,B
NEW QUESTION 118
BSS is called the Basic Service Set, BSS can be divided into Independent BSS and Infrastructure BSS two kinds 。
- A. True
- B. False
Answer: A
NEW QUESTION 119
What are the conditions for roaming switching triggers generally? (Multiple Choice)
- A. Set the signal strength ratio between the current AP and the neighbor AP, and switch to the threshold.
- B. Check the packet loss rate and start switching when the packet loss rate reaches a certain value.
- C. Start the switch when the network speed is very slow when it is associated with the original AP.
- D. Start the switch after the STA reaches a certain distance from the original AP.
Answer: A,B
NEW QUESTION 120
The choice of WLAN coverage antenna, for narrow and long areas, it is recommended to select (), open a short distance area, it is recommended to select ().
- A. omnidirectional antenna; omnidirectional antenna
- B. directional antenna; omnidirectional antenna
- C. omnidirectional antenna; directional antenna
- D. directional antenna; directional antenna
Answer: B
NEW QUESTION 121
What are the common causes for AP can't get IP address? (Multiple Choice)
- A. the configuration of address pool is not correct
- B. POE Power supply failure
- C. Intermediate network problem
- D. address pool use up
Answer: A,C,D
NEW QUESTION 122
Basic service set is the basic component of 802.11 network, consists of a set of workstations communicate with each other.
- A. True
- B. False
Answer: A
NEW QUESTION 123
In China, which of the following is the outdoor WLAN band supported by the Radio Management Committee?
- A. 5.15-5.25GHz
- B. 5.25-5.35GHz
- C. 2.4-2.4835GHz
- D. 5.725-5.850GHz
Answer: C,D
NEW QUESTION 124
Among the following obstacles, has the greatest loss of wireless signals.
- A. Glass
- B. Gypsum ceiling
- C. 200mm Concrete wall
- D. 120mm Brick wall
Answer: C
NEW QUESTION 125
The correct statement about WDS is (Select 2 Answers)?
- A. Scalability is good, and there is no need to lay new wired connections and deploy more APs
- B. WDS uses the 2.4GHz band as the bridge frequency band by default.
- C. Connect two separate LAN segments through a wireless bridge and provide data transmission between them
- D. Huawei indoor AP does not support WDS function.
Answer: A,C
NEW QUESTION 126
WIDS attack detection includes (Select 3 Answers).
- A. Spoof attack detection
- B. Weak IV attack detection
- C. Microwave interference detection
- D. Flood attack detection
Answer: A,B,D
NEW QUESTION 127
Various pipes, metal keel and aluminum pinch in the ceilings will bring a greater impact on the actual effects of signal coverage.
- A. True
- B. False
Answer: A
NEW QUESTION 128
Which of the following standards is WLAN (Select 2 Answers)?
- A. 802.11a/b/g/n
- B. WPA
- C. 802.11i
- D. WPA2
Answer: B,D
NEW QUESTION 129
For shared key authentication, the following description is wrong.
- A. For thin APs, the shared key is preset in the AC.
- B. Shared key requires the user and AP to use the same shared key
- C. The disadvantage of shared key is that it is not scalable and not very secure.
- D. After using shared key authentication, WEP encryption must be used.
Answer: A
NEW QUESTION 130
Which of the following descriptions about the service VLAN are correct? (Multiple Choice)
- A. Mainly responsible for transmitting data when WLAN users access the Internet.
- B. Service VLAN under the VAP template
- C. Responsible for the establishment of CAPWAP tunnel between AC and AP
- D. The device interface is connected to the PVID of the AP.
Answer: A,B
NEW QUESTION 131
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