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Updated: Sep 21, 2026

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H3C GB0-392 Exam Overview:

Certification Vendor:H3C
Exam Name:Network Security and Optimization
Exam Number:GB0-392
Exam Duration:90 minutes
Certificate Validity Period:3 years
Related Certifications:H3CSE-Routing & Switching
H3CNE-RS+
H3CIE-RS+
Available Languages:Chinese, English
Exam Format:True/False, Single Choice, Multiple Choice
Exam Price:$135 USD
Passing Score:600/1000
Real Exam Qty:50
Recommended Training:H3C Network Security and Optimization Training
Exam Registration:ATAC
Prometric
Sample Questions:H3C GB0-392 Sample Questions
Exam Way:Computer-based, delivered at authorized H3C testing centers or via online proctoring
Pre Condition:Valid H3CNE-RS+ certificate or equivalent knowledge; recommended to hold H3CSE-Routing & Switching certification
Official Syllabus URL:https://www.h3c.com/en/Training_Certification/Technical_training___certification/Certification_Project/Senior/H3CSE-RS-NSO/

H3C GB0-392 Exam Syllabus Topics:

SectionWeightObjectives
Network Security Architecture and Optimization20% - 25%- Security threat analysis and defense
  • 1. Security policy design
    • 2. Common attack types and mitigation
      - Security deployment and optimization
      • 1. Firewall and IPS integration
        • 2. Access control and identity management
          Quality of Service Optimization15% - 20%- QoS models and mechanisms
          • 1. Differentiated Services
            • 2. Integrated Services
              - Traffic classification, marking and policing
              - Queue scheduling and congestion management
              Secure Optimized WAN Overview10% - 15%- Enterprise network architecture models
              • 1. Hierarchical network structure
                • 2. IToIP architecture
                  • 3. SOA-based network design
                    - H3C enterprise network framework
                    IPv6 Transition and Optimization10% - 15%- IPv6 network security and performance
                    - Transition technologies
                    • 1. Dual-stack
                      • 2. Tunnel technologies
                        High Availability and Reliability Technologies10% - 15%- Network redundancy design
                        • 1. Device-level redundancy
                          • 2. Link-level redundancy
                            - Fast convergence and recovery mechanisms
                            • 1. GR/NSR/NSF
                              • 2. BFD detection
                                Network Service Optimization15% - 20%- Service optimization strategies
                                • 1. Delay and jitter optimization
                                  • 2. Bandwidth utilization improvement
                                    - Performance monitoring and analysis
                                    • 1. Fault diagnosis and location
                                      • 2. Key performance indicators

                                        H3CSE-RS-NSO Sample Questions:

                                        Question #1

                                        在 PE 上建立配置建立一个 VPN 时,下列说法正确的是。

                                        • A. VPN 的名称由用户根据理解、查看方便的需要自行设置,不同的 VPN 的名称不能相同
                                        • B. 在一台 PE 上,需要为每个 VPN 规划一个独立的 RD 值
                                        • C. 用户需要为每个 VPN 用户,规划一个唯一的私网标签值
                                        • D. RT 的值与 VPN 用户之间的互访关系有关,但其 Impert target 和 Exporttarget 属性值必须相同
                                        Reveal Solution  Discussion  0

                                        Correct Answer: A,B  🗳️

                                        Question #2

                                        下列关于 VoIP 语音传输的说法错误的是。

                                        • A. 需要 TCP 提供可靠性机制
                                        • B. 需要 UDP 提供多路复用机制
                                        • C. 需要 RTP 提供重新排序机制
                                        • D. 需要 UDP 提供时间戳机制
                                        Reveal Solution  Discussion  0

                                        Correct Answer: A,D  🗳️

                                        Question #3

                                        VPN 是,下面哪种 RT 的配置方法是错误的 ?

                                        • A. 需要隔离的两个私网用户所属的 VPN 的 RT 属性,其 Import Target 属性和 Export Target 属性之间存在交集
                                        • B. 需要互访的两个私网用户所属的 VPN 的 RT 属性,其 Import Target 属性和 Import Target 属性之间存在交集
                                        • C. 需要互访的两个私网用户所属 VPN 的 RT 属性,其 Import Target 属性和 Export Target 属性之间存在交集
                                        • D. 需要隔离的两个私网用户所属的 VPN 的 RT 属性,其 Export Target 属性和 Export Target 属性之间存在交集
                                        Reveal Solution  Discussion  0

                                        Correct Answer: A  🗳️

                                        Question #4

                                        用户使用电话时,室起电话手柄输入被叫号码后,被叫电话机的振铃属于下列哪种信令。

                                        • A. 呼叫信令
                                        • B. 信息信令
                                        • C. 地址信令
                                        • D. 监管信令
                                        Reveal Solution  Discussion  0

                                        Correct Answer: D  🗳️

                                        Question #5

                                        LDP 会话建立的过程是。

                                        • A. 邻居发现 -> 建立 TCP 连接 -> 建立会话 -> 会话维护
                                        • B. 建立会话 -> 邻居发现 -> 建立 TCP 连接 -> 会话维护
                                        • C. 邻居发现 -> 建立会话 -> 建立 TCP 连接 -> 会话维护
                                        • D. 建立 TCP 连接 -> 邻居发现 -> 建立会话 -> 会话维护
                                        Reveal Solution  Discussion  0

                                        Correct Answer: A  🗳️

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