H3C Constructing Secure optimized WANs v2.0 : GB0-391

  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Updated: Jul 22, 2026
  • Q&As: 468 Questions and Answers

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GB0-391 exam dumps

H3C GB0-391 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Secure VPN Technologies25%- Data security fundamentals: encryption, integrity, PKI
- SSL VPN architecture and application scenarios
- IPSec VPN architecture, principle and configuration
Topic 2: WAN Optimization and QoS15%- Traffic policing and shaping
- QoS models and service classification
- Congestion management and avoidance
Topic 3: Overview of Secure and Optimized WAN10%- Key technologies for secure and optimized WAN
- Remote network connection requirements
Topic 4: BGP/MPLS VPN15%- MPLS basic concepts and label operation
- BGP/MPLS VPN architecture and deployment
- MPLS LDP protocol
Topic 5: Traditional VPN Technologies20%- VPN basic concepts and classification
- L2TP VPN principle and configuration
- GRE VPN principle and configuration
Topic 6: Broadband Access Technologies15%- ADSL/ADSL2+ access technology
- EPON/GPON technology and deployment
- PPPoE principle and configuration

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. In BGP MPLS VPN networking, where will the private network label exist in the following locations ?

A) In the private network packet forwarded by the PE to the P device
B) Private network routing between PE and CE
C) In the private network packet forwarded by PE to CE
D) Private network routing between PEs


2. In the EPON system, the port that the ONU device connects to the user is

A) OLT
B) NNI
C) ONU
D) UNI


3. The information displayed on the MSR router is as follows:
Sstem Defined Behavior Information:
Behavior: ef
Expedited Forwarding:
Bandwidth 20 (% ) Cbs-ratio 25
Behavior: af
Assured Forwarding:
Bandwidth 20 (%)
Discard Method: Tail
Behavior: be
-none-
Then the following statement is incorrect is _____

A) use can change the percentage of the bandwidth occupied by the queue user behavior
B) significant information is shown the behavior of the system defined
C) which is defined in the EF queue and AF queues, bandwidth is reserved bandwidth occupied respectively 20%
D) explicit information indicating the behavior of a user-defined


4. In EPON applications, if the home gateway or switch on the user side is provided by the operator and unified VLAN management, then the VLAN operation mode on the UNI port should be configured as ____ .

A) VLAN Translation Mode
B) VLAN tagging mode
C) VLAN transparent transmission mode
D) VLAN Tag mode


5. In the private network routing table of the PE equipment, the next hop of the remote user's private network route is ______ .

A) distal end CE of the loopback interface address
B) present P E of loopbac K interface address
C) distal end of the PE and CE interface address connected
D) distal end PE of the loopback interface address


Solutions:

Question # 1
Answer: A,D
Question # 2
Answer: D
Question # 3
Answer: A,D
Question # 4
Answer: C
Question # 5
Answer: D

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