Try and practice the latest H3C : GB0-391 real questions & answers
Updated: Aug 08, 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 |
| Real Exam Qty: | 50 |
| Exam Duration: | 60 minutes |
| Passing Score: | 600/1000 |
| Related Certifications: | GB0-371 Building H3C High-Performance Campus Network v2.0 GB0-381 H3C Large-Scale Network Routing Technology v2.0 |
| Exam Price: | $135 USD |
| Exam Format: | Multiple Choice, Single Choice, Fill-in-the-blank |
| Available Languages: | English, Simplified Chinese |
| Certificate Validity Period: | 3 years |
| 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: BGP/MPLS VPN | 15% | - BGP/MPLS VPN architecture and deployment - MPLS basic concepts and label operation - MPLS LDP protocol |
| Topic 2: WAN Optimization and QoS | 15% | - Congestion management and avoidance - QoS models and service classification - Traffic policing and shaping |
| Topic 3: Overview of Secure and Optimized WAN | 10% | - Remote network connection requirements - Key technologies for secure and optimized WAN |
| Topic 4: Broadband Access Technologies | 15% | - ADSL/ADSL2+ access technology - EPON/GPON technology and deployment - PPPoE principle and configuration |
| Topic 5: Traditional VPN Technologies | 20% | - GRE VPN principle and configuration - L2TP VPN principle and configuration - VPN basic concepts and classification |
| Topic 6: Secure VPN Technologies | 25% | - Data security fundamentals: encryption, integrity, PKI - IPSec VPN architecture, principle and configuration - SSL VPN architecture and application scenarios |
H3C Constructing Secure optimized WANs v2.0 Sample Questions:
1. The correct statement about application layer attack defense is _____ .
A) should require real-time attack signature database update the application layer attack protection
B) should be fixed once and for all with the completion strategy layer attack protection can be used
C) should need to use professional security equipment to complete the application layer attack protection
D) be a general attack prevention layer network devices can be done
2. Common VPI/VCI values in ADSL applications include ____ .( Choose one or more )
A) 0/35
B) 0/32
C) 0/16
D) 0/30
3. What is correct about DOS attacks is ____ .
A) for at DOS attack in the FTP FLOOD attack can be taken to limit the number of connections per second to defense
B) on to DOS attacks can be controlled by configure access lists on a network device to defense
C) DOS attacks are aimed at reducing the ability of the attacked system to provide services
D) on to DOS attacks in the TCP FLOOD attack, you can use TCP proxy mechanism to defense
4. When the queue reaches the most after a large value, the message will be used _____ embodiment discards
A) Tail discard
B) RED
C) Press time sequence, discarding most to packets enqueued
D) WRED
5. Configure the following commands on the MSR router:
qos cql 1 queue 1 serving 1000
qos cql 1 queue 2 serving 2000
qos cql 1 queue 3 serving 500
qos cql 1 queue 4 serving 1500
qos cql 1 protocol ip tcp ftp-data queue 2
qos cql 1 protocol ip udp tftp queue 3
qos cql 1 protocol ip pop3 queue 4
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
duplex full
speed 10
qos cq pql 1
From G0 / 1 forwarding packets include Telnet , ftpdata , the TFTP and POP3 flow amounts are 4Mbps , port no other traffic, Telnet packet can be used is about broadband
A) 20%
B) 30%
C) feature set error
D) 10%
E) 40%
Solutions:
| Question # 1 Answer: A,C | Question # 2 Answer: A,B | Question # 3 Answer: A,C,D | Question # 4 Answer: A | Question # 5 Answer: A |
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