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Huawei H12-321-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Building Mobile Enterprise WLAN | 12% | - Layer 2 and Layer 3 roaming principles - Intelligent roaming optimization - Inter-AC roaming configuration |
| Topic 2: Building Secure Enterprise WLAN | 29% | - WLAN security authentication services - Integration with Agile Controller-Campus - WIDS/WIPS deployment and configuration |
| Topic 3: Building Highly Reliable Enterprise WLAN | 15% | - AC backup mechanisms (N+1, VRRP HSB) - Dual-link backup for APs - High availability deployment |
| Topic 4: Building Interconnected Enterprise WLAN | 23% | - Interworking with existing wired networks - WLAN service management and monitoring - Wireless Mesh network construction |
| Topic 5: Building Basic Enterprise WLAN | 21% | - Large-scale WLAN networking principles - Radio frequency management and optimization - CAPWAP tunnel configuration |
Huawei HCIP-WLAN CEWA(Huawei Certified ICT Professional-Wireless Local Area Network-Constructing Enterprise WLAN Architecture) Sample Questions:
Which of the following statements about global calibration algorithms are TRUE? (Multiple Choice)
- A. If the interference caused by a neighbor is smaller than the lower interference threshold, the algorithm determines whether to reduce the transmit power according to the difference between the interference caused by the neighbor and the lower interference threshold.
- B. The Transmit Power Control (TPC) algorithm aims to choose a proper transmit power which can meet coverage requirements of an AP.
- C. Interference specified by the lower interference threshold is low, and within the allowed range. Two neighbor APs cannot detect interference from each other and can send packets simultaneously.
- D. The core of the Dynamic Channel Allocation (DCA) algorithm is the exhaustion and iteration algorithms, which list all possible AP-Channel combinations and choose the optimal combination.
Correct Answer: C,D 🗳️
Which of the following statements is TRUE about communication between the active/standby ACs with the RADIUS/Portal server in load balancing mode?
- A. If the original active AC is not DOWN or the uplink of the original active AC is not disconnected, a loopback interface that uses the same IP address as the active AC needs to be configured on the standby AC. Routes to the loopback interface are not advertised but imported to IGP.
- B. The active AC fills the NAS IP address and accounting session ID into accounting and authentication packets.
- C. The source IP address carried in RADIUS packets sent by the active and standby ACs must be the same, but the IP addresses of the two ACs configured on the RADIUS server carried in COA/DM packets can be different.
- D. If the original active AC is DOWN or the uplink of the original active AC is disconnected, the active AC needs to process received COA/DM packets and synchronize these packets to the standby AC, and delivers authorization information to APs.
Correct Answer: B 🗳️
During deployment of a long-distance point-to-point RF communication link, what is the distance between the receive and transmit antennas when impact of the Earth curvature should be considered?
- A. 7.3 km
- B. 5.3 km
- C. 3.3 km
- D. 11.3 km
Correct Answer: D 🗳️
After HSB is configured, the HSB channel cannot be established and information on the active device fails to be backed up to the standby device.
What are the possible causes for the fault? (Multiple Choice)
- A. The retransmission count and interval of HSB service packets are different on the two devices.
- B. The source IP address and port number of the active AC are different from the destination IP address and port number of the standby AC.
- C. The TCP channel is not established for sending HSB service packets.
- D. The same priority value is configured for the two ACs.
Correct Answer: A,B,C 🗳️
Which statements about Layer 2 and Layer 3 roaming are TRUE? (Multiple Choice)
- A. After Layer 3 roaming is performed, the VLAN IDs in the service set of APs are changed.
- B. If the VLAN IDs before and after roaming are the same, the STA roams at Layer 2.
- C. Layer 2 roaming indicates that STAs roam within the same subnet.
- D. Layer 3 roaming indicates that STAs roam between different subnets.
Correct Answer: A,C,D 🗳️
