Exam Name: Constructing Secure optimized WANs v2.0
Certification Provider: H3C
Corresponding Certification: H3CSE-Routing & Switching
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Updated: Aug 31, 2026
No. of Questions: 468 Questions & Answers with Testing Engine
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H3C GB0-391 Exam Overview:
| Certification Vendor: | H3C |
|---|---|
| Exam Name: | Constructing Secure Optimized WANs v2.0 |
| Exam Number: | GB0-391 |
| Available Languages: | Chinese, English |
| Certificate Validity Period: | 3 years (part of H3CSE Routing & Switching certification validity) |
| Passing Score: | 600/1000 (60%) |
| Related Certifications: | GB0-381 H3C Large-Scale Network Routing Technology V2.0 GB0-371 Building H3C High-Performance Campus Network V2.0 |
| Exam Price: | USD 135 (approx.) |
| Exam Duration: | 60 minutes |
| Exam Format: | Multiple choice, Single choice, Gap fill (varies by item set), True/False |
| Real Exam Qty: | 50 |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Proctored exam arranged by PROMETRIC, available at testing centres or via approved delivery partners. |
| Pre Condition: | Recommended to hold H3CNE certificate and fundamental networking knowledge; part of H3CSE Routing & Switching certification track (requires GB0-371 and GB0-381). |
| Official Syllabus URL: | https://www.h3c.com/en/Training_Certification/Technical_training___certification/Certification_Project/H3CSE/ |
H3C GB0-391 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Conventional VPN Technologies | - GRE VPN principles and configuration - L2TP VPN concepts and applications |
| Topic 2: Quality of Service (QoS) | - Traffic policing, shaping and congestion techniques - Link efficiency and compression technologies |
| Topic 3: Secure VPN Technologies | - SSL VPN principles and configuration basics - IPSec VPN architecture and security basics |
| Topic 4: Secure Optimized WAN Overview | - WAN architecture and requirements - Enterprise secure WAN fundamental concepts |
| Topic 5: BGP/MPLS VPN | - BGP/MPLS VPN implementation and troubleshooting - MPLS core concepts and label forwarding |
| Topic 6: Broadband Access Technologies | - WAN access configuration methods - Broadband access principles (IPoE, EPON etc.) |
| Topic 7: Enhanced Network Security | - Threats and secure network best practices - Network security management methods |
H3C Constructing Secure optimized WANs v2.0: Frequently Asked Questions
The GB0-391 exam leads to the H3CSE-Routing & Switching certification from H3C. It is positioned at the Intermediate / Professional level. The exam validates the knowledge and skills expected of candidates preparing for H3C Constructing Secure optimized WANs v2.0.
Related certifications include:
- GB0-371 Building H3C High-Performance Campus Network V2.0
- GB0-381 H3C Large-Scale Network Routing Technology V2.0
The GB0-391 exam includes 50 questions and allows 60 minutes. Before test day, divide the available time by the number of questions in a timed practice set to establish a steady per-question pace. If a difficult item starts consuming too much time, mark it for review and move forward instead of losing momentum. A full timed practice session can help you decide when to move on, when to return, and how much buffer to reserve for a final check.
The passing score for GB0-391 is 600/1000 (60%), and the official exam fee is USD 135 (approx.). Because a retake requires paying the exam fee again, use timed practice results as a readiness check before scheduling your next attempt. If your performance remains inconsistent, continue reviewing weak domains and repeat a timed session before booking the exam.
Recommended to hold H3CNE certificate and fundamental networking knowledge; part of H3CSE Routing & Switching certification track (requires GB0-371 and GB0-381).
Eligibility rules can change, so confirm the current requirements on the official exam page before registering.
Yes. Actual4dump provides a free PDF demo so you can review the format, question style, and answer quality before placing an order. Your purchase includes 365 days of free updates, and expired products can receive continued update service at a 50% discount.
If you purchase the corresponding GB0-391 preparation material and do not pass that exam within 60 days of purchase, you may apply for a full refund under the 100% Money Back Guarantee. The request requires a scanned exam enrollment slip and the official Score Report PDF, submitted within two days after the exam. Eligible requests are processed within seven days.
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The current GB0-391 outline is organized into 7 top-level domains. The first listed areas include:
- Secure Optimized WAN Overview
- BGP/MPLS VPN
- Broadband Access Technologies
Review the Exam Topics section above for the complete outline and any nested subtopics.
H3C Constructing Secure optimized WANs v2.0 Sample Questions:
Question 1
The encapsulation format of the voice data transmitted in the VoIP network data is ______ .
A. IP|RTP| voice data
B. IP|UDP|RTCP|RTP| Voice data
C. IP|TCP |RTP| voice data
D. IP|UDP|RTP| voice data
Question 2
The business transmission between departments of an enterprise needs to adopt IPSec to provide end-to-end security protection, and data must be encrypted for transmission.
According to the requirements of the enterprise's business transmission security, which encapsulation protocol should IPSec use ? ( Choose one or more )
A. AH encapsulation protocol
B. DES Encapsulation Protocol
C. ESP Encapsulation Protocol
D. ESP+AH encapsulation protocol
Question 3
The following descriptions belong to the handshake layer function of the SSL protocol _______ .
A. Negative responsible for the establishment, maintenance SSL session
B. insurance certificate, reliable data transmission
C. Association key used to encrypt the parameter provider
D. isobutyl the normally turned off SSL connection
Question 4
How do you view PE device learns to BGP private network routes _______ .
A. displa bgp vpnv4 all routing-table
B. displa bgp routing-table
C. displa mp-bgp r outing-table
D. displa bgp vpnv4 routing-table
Question 5
Which of the following PPPoE packets may contain valid PPP Session-ID information ?
A. PADT ( PPPoE Active Discover Ter minate )
B. PADS ( PFoPoE Active Discover Session-Confirmation )
C. PADI ( PPPoE Active Discover Initiation )
D. PADO ( PPPoE Active Discover Offer )
E. PADR ( PPPoE-Active Discover Request )
Solutions:
| Question 1 Answer: D | Question 2 Answer: C,D | Question 3 Answer: A,C,D | Question 4 Answer: A | Question 5 Answer: A,B |
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