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Updated: Aug 09, 2026
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H3C GB0-391 Exam Overview:
| Certification Vendor: | H3C |
| Exam Name: | Constructing Secure optimized WANs v2.0 |
| Exam Number: | GB0-391 |
| Exam Duration: | 60 minutes |
| Certificate Validity Period: | 3 years |
| Exam Price: | $135 USD |
| Available Languages: | English, Simplified Chinese |
| Exam Format: | Multiple Choice, Single Choice, Fill-in-the-blank |
| Real Exam Qty: | 50 |
| Related Certifications: | GB0-371 Building H3C High-Performance Campus Network v2.0 GB0-381 H3C Large-Scale Network Routing Technology v2.0 |
| Passing Score: | 600/1000 |
| Recommended Training: | Constructing Secure Optimized WANs v2.0 Official Training |
| Exam Registration: | Prometric Registration |
| Sample Questions: | H3C GB0-391 Sample Questions |
| Exam Way: | Online proctored or onsite testing center |
| Pre Condition: | Valid H3CNE-RS certification recommended |
| Official Syllabus URL: | https://www.h3c.com/en/Training_Certification/ |
H3C GB0-391 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Overview of Secure and Optimized WAN | 10% | - Remote network connection requirements - Key technologies for secure and optimized WAN |
| Topic 2: Secure VPN Technologies | 25% | - SSL VPN architecture and application scenarios - Data security fundamentals: encryption, integrity, PKI - IPSec VPN architecture, principle and configuration |
| Topic 3: WAN Optimization and QoS | 15% | - Traffic policing and shaping - Congestion management and avoidance - QoS models and service classification |
| Topic 4: Broadband Access Technologies | 15% | - PPPoE principle and configuration - EPON/GPON technology and deployment - ADSL/ADSL2+ access technology |
| Topic 5: Traditional VPN Technologies | 20% | - L2TP VPN principle and configuration - VPN basic concepts and classification - GRE VPN principle and configuration |
| Topic 6: BGP/MPLS VPN | 15% | - MPLS basic concepts and label operation - MPLS LDP protocol - BGP/MPLS VPN architecture and deployment |
H3C Constructing Secure optimized WANs v2.0 Sample Questions:
1. In the GRE encapsulation of IP over IP , IP uses the protocol number ____ to mark the GRE header.
A) 47
2. In BGP MPLS VPN group on the public network device using displa mpls ldp session command command checks LDP when establishing the neighbor condition, the neighbor is found Operational , said next ______ .
A) The LDP neighbor with this neighbor has been successfully established and can exchange label information
B) and the neighbor can not build stand LDP neighbor relationship, because for the LDP does not match the parameters
C) and the neighbor can not build stand LDP neighbor relationship, because the end is not so able LDP protocol
D) Label interaction has been completed with this neighbor
3. IP header ToS field provides a ______ one IP Precedence priority.
A) 64
B) 8
C) 32
D) 16
4. Analyzing from the network structure, the network security threat lies in ________ .
A) Net network outside
B) Number of data generation process
C) Number of data during transmission
D) Net internal network
5. QoS can determine which specific behavior set a message belongs to through _____ .( Choose one or more )
A) match with IP Precedence
B) matched with IP addresses , the MAC address , the VLAN number, protocol type, port number of the transport layer
C) matching with 802.1x
D) Configure the trusted port priority or packet priority on the interface
E) match with COS
F) match with DSCP
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: B | Question # 4 Answer: A,C,D | Question # 5 Answer: A,B,D,E,F |
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