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H3C GB0-391 Exam Braindumps - in .pdf Free Demo

  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Last Updated: Jul 23, 2026
  • Q & A: 468 Questions and Answers
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  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Last Updated: Jul 23, 2026
  • Q & A: 468 Questions and Answers
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H3C GB0-391 Exam Syllabus Topics:

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

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. Which statements about the PKI workflow are correct?

A) solid body identity reviewed by RA completed
B) permit book application made by the entity
C) Certificate book by the CA issued
D) solid body needs to revoke the certificate RA application


2. Regarding echo in the VoIP telephone system, which of the following descriptions are correct ?

A) language voice gateway equipment itself does not bring new echo, but the lP network brings network latency, increasing the echo time delay, leading to the original feel of the echo in VoIP become energy network Felt echo
B) In a VoIP network, the echo is related to the choice of encoding.The greater the compression ratio, the greater the relative echo in the network.
C) speech voice gateway when performing analog to digital conversion may introduce echo, but can be configured to suppress echo in voice gateway function to reduce this effect
D) back sound into electrical echo and acoustic echo, a conventional telephone system is mainly due to two electrical echo, four-wire conversion impedance mismatch caused by


3. The figure shows the SSL VPN mode deployed by an enterprise .The correct description of the networking mode is _______ .

A) The networking mode is dual-arm networking mode
B) This dominant species networking is that all internal and external network traffic networks have been SSL VPN gateway, Full control over these flows
C) The networking mode is single-arm networking mode
D) This dominant species networking is that, SSL VPN processing performance gateway does not affect the performance of the communications network and the external network


4. As shown in the figure, the configurations of the two security gateways are:
RTA
[RTA] ike peer 123
[RTA-ike-peer-123] pre-shared-ke simp le 123
[RTA-ike-peer-123] remote-address 10.2.1.2
[RTA-ike-peer-123] local-address 10.2.1.1
[RTA-ike-peer-123]quit
[RTA] ipsec proposal 1
[RTA-ipsec-proposal-1] quit
[RTA]acl number 3000
[RTA-acl-adv-3000] rule 0 permit ip source 10.1.1.0 0.255.255.255
[RTA]ipsec polic 1 1 isakmp
[RTA-ipsec-polic-isakmp-1-1] securit acl 3000
[RTA-ipsec-polic-isakmp-1-1] ike-peer 123
[RTA-ipsec-polic-isakmp-1-1] proposal 1
[RTA-ipsec-polic-isakmp-1-1] quit
[RTA] interface Ethernet 0/1/0
[RTA-Serial0/2/1] ip address 10.2.1.1 255.255.255.0
[RTA] interface Serial 0/2/1
[RTA-Serial0/2/1] ip address 10.2.1.1 255.255.255.0
[RTA-Serial0/2/1]] ipsec polic 1
RTB:
[RTB] ike peer 123
[RTB-ike-peer-123] pre-shared-ke simple 123
[RTB-ike-peer-123] remote-address 10.2.1.1
[RTB-ike-peer-123] local-address 10.2.1.2
[RTB-ike-peer-123]quit
[RTB] ipsec proposal 1
[RTB-ipsec-proposal-1] quit
[RTB]acl number 3000
[RTB-acl-adv-3000] rule 0 permit ip source 10.3.1.0 0.255.255.255
[RTB]ipsec polic 1 1 isakmp
[RTB-ipsec-polic-isakmp-1-1] securit acl 3000
[RTB-ipsec-polic-isakmp-1-1] ike-peer 123
[RTB-ipsec-polic-isakmp-1-1] proposal 1
[RTB-ipsec-polic-isakmp-1-1] quit
[RTA] interface Ethernet 0/1/0
[RTA-Serial0/2/1] ip address 10.3.1.1 255.255.255.0
[RTB] interface Serial0/2/1
[RTB-Serial0/2/1] ip address 10.2.1.2 255.255.255.0
[RTB-Serial0/2/1] ipsec polic 1
This shows that ______ .

A) either any party initiated SA negotiation can be successful
B) any any party initiated SA negotiation can not succeed
C) Only there from RTB to RTA launched the SA negotiation can succeed
D) Only there from the RTA to RTB launch of SA negotiation can succeed


5. Execute the command on the MSR router and output the following information:
Interface: GigabitEthernet0/1
Output queue: (Urgent queuing: Size/Length/Discards ) 0/100/0
Output queue: (Protocol queuing: Size/Length/Discards ) 0/500/0
Output queue: (Priorit queuing: PQL 1 Size/Length/Discards)
Top: 3/20/42878 Middle: 10/40/0 Normal: 60/60/259195 Bottom: 80/80/344297
Then the following statement is incorrect :

A) PQ queue scheduling takes effect , and Top traffic has no packet loss
B) PQ queue scheduling takes effect , no packet loss for Top traffic
C) PQ queue scheduling does not take effect , Top traffic has no packet loss
D) PQ queue scheduling does not take effect , Top traffic has packet loss
E) PQ queue scheduling takes effect , Top traffic has packet loss
F) PQ queue scheduling does not take effect , and Middle traffic has no packet loss


Solutions:

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

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