H3C GB0-342-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: WLAN Troubleshooting | - Fault Diagnosis
|
| Topic 2: WLAN Architecture and Deployment | - H3C WLAN Architecture
|
| Topic 3: WLAN Fundamentals | - Wireless Network Basics
|
| Topic 4: WLAN Configuration and Management | - Basic WLAN Services
|
| Topic 5: WLAN Optimization | - Roaming Technologies
|
| Topic 6: WLAN Security | - Access Control
|
H3CSE-WLAN Sample Questions:
Question #1
The media access mechanism of an 802.11 network is ______. In this mechanism, when the sender detects that the media is idle _______.
A. 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.
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/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.
D. 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
Question #2
The description about hidden nodes is correct
A. In order to reduce the impact of hidden nodes in the indoor environment, the RTS/CTS function can be enabled on the AP side
B. The formation of hidden nodes between APs may result in collision and loss of packets sent by APs to STAs
C. cts-to-self is to solve the hidden node problem
D. In the outdoor AP+CPE environment, to reduce the impact of hidden nodes, the RTS/CTS function can be enabled on the AP side
Question #3
Which of the following IEEE 802.11 protocols specifies the security of wireless local area networks?
A. 802.11a
B. 802.11e
C. 802.11i
D. 802.11n
E. 802.11h
Question #4
The wireless client can search for the WLAN signal but cannot associate with the AP, the possible reasons are
A. Client wireless network card encryption method is inconsistent with AP
B. The AP distance is too far or there are too many obstacles, and the signal strength is lower than the receiving sensitivity of the wireless network card
C. Too many users associated with this AP
D. There are strong sources of interference in the surrounding environment
Question #5
When the wireless bridge (WDS) fails, the first thing to do is to check the engineering installation specifications. The correct description below is
A. Check that the antennas at both ends of the bridge are aligned.
B. Check whether the polarization direction of the antenna is consistent, which can be judged by the V-shaped mark.
C. Check whether the connection between the various RF connection parts is tight.
D. Check whether the working frequency of the currently used antenna matches the working frequency of the Radio (11a/11g).
Solutions:
| Question #1 Correct Answer: C | Question #2 Correct Answer: B | Question #3 Correct Answer: C | Question #4 Correct Answer: A,B,C,D | Question #5 Correct Answer: A,B,C,D |
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