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

  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Updated: Aug 02, 2026
  • Q & A: 468 Questions and Answers

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H3C GB0-391 Exam Syllabus Topics:

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

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. The following belong to the core layer function is ____ .( Choose one or more )

A) access into the security control
B) High -speed packet-switched
C) will be the routing policy
D) owns a large number of interfaces, and for the final connected user computer.


2. In the BGP MPLS VPN networking, the following description about the private network label and the public network label is correct _______ .

A) The value of the public network label and the private network label carried in the message must be different
B) The public network label is dynamically allocated, while the private network label is statically allocated
C) The format of the public network label is different from that of the private network label
D) well different label distribution protocol network and the private network tag label, the label is typically a public network LDP allocation protocol, and the label by the private network MP-BGP distribution protocol


3. The four routers R1 , R2 , R3, and R4 are connected in sequence, and Loopback0 interfaces are created on R1 and R4 , and the interface addresses are 1.1.1.1 and 4.4.4.4 respectively.The four devices are configured with static routing protocols to ensure Loopback0 of R1 and R4 .The address is reachable, and a GRE Tunnel is established between R1 and R4 .Check the tunnel interface information on R1 as follows:
[R1]displa interface Tunnel O
Tunnelo current state: UP
Tunnelo current statle: UP
Line protocol current state: UP
Description: Tunnel 0 Interface
The Maximum transmit Unit is 1476
Internet Addess is 10.1.1 .1/30 Primar.
Encapsulation isTUNNEL aggregation ID not set
Tunnel source l.1.1.1 destination 4.4.4.4
Tunnel keeepalive disable
Tunnel protocol/transport GRE/IP.
GRE key disable
Checksumming of GRE packets disabled
Last 300 seconds input:.2 btes/secl 0 packet/sec.
Last 300 seconds output:..2 bytes/sec , 0 packets/sec.
15packets input 840bytes.
0 input error
27packets output , 1248btes
0 0utput error
At this time, if the interrupt R2 and R3 link between, the following statement is correct ____

A) Rl on -Tunnel interface remains UP state
B) The status of the Tunnel interface on R1 is Down
C) The IP address of the Tunnel interface of R4 should be 10.0.0.2.
D) The source IP of the Tunnel interface of R4 is 4.4.4.4 , and the destination IP is 1.1.1.1


4. The following statements about GRE and BGP MPLS VPN are correct: _______ .

A) GRE private network users can only run static routing protocol, BGP MPLS VPN private network users run BGP dynamic routing protocol
B) that they have adopted the technology can tunnel VPN
C) The GRE tunnel needs to be statically configured and the MPLS tunnel of BGP MPLS VPN is dynamically established
D) It had all VPN technology


5. a H.323 gateway receives when registering with the gatekeeper RCF message stating

A) network gatekeeper registration request is being processed gateway
B) network gatekeeper refused to register the gateway
C) Net observe accepted the registration of the gateway
D) network related parameters transmitted error


Solutions:

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

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