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

GB0-391

Exam Code: GB0-391

Exam Name: Constructing Secure optimized WANs v2.0

Updated: Sep 13, 2026

Q & A: 468 Questions and Answers

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About H3C Constructing Secure optimized WANs v2.0 certification

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H3C GB0-391 Exam Syllabus Topics:

SectionObjectives
Topic 1: Quality of Service (QoS)- Traffic policing, shaping and congestion techniques
- Link efficiency and compression technologies
Topic 2: Conventional VPN Technologies- L2TP VPN concepts and applications
- GRE VPN principles and configuration
Topic 3: Secure Optimized WAN Overview- Enterprise secure WAN fundamental concepts
- WAN architecture and requirements
Topic 4: Secure VPN Technologies- SSL VPN principles and configuration basics
- IPSec VPN architecture and security basics
Topic 5: Broadband Access Technologies- WAN access configuration methods
- Broadband access principles (IPoE, EPON etc.)
Topic 6: BGP/MPLS VPN- MPLS core concepts and label forwarding
- BGP/MPLS VPN implementation and troubleshooting
Topic 7: Enhanced Network Security- Threats and secure network best practices
- Network security management methods

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

Question #1
Which of the following descriptions of the traditional telephone system is correct is ______ .

A. electrical telephones and facsimile machines belong to the FXS ordinary telephone devices can be connected to a central office switch via an ordinary telephone line FXO interface.
B. electrically telephone ringing tone by the remote PBX providing a voltage or central office switches completed, the dial tone is provided by the telephone set voltage accomplished.
C. electrically telephone subscriber loop access through the PBX or central office switches, are connected to the telephone subscriber loop and the PBX a line between the pair comprising TiP and Ring , wherein TiP ground, Ring then PBX negative electrode.


Question #2
QoS can determine which specific behavior set a packet belongs to by _____ .( Choose one or more )

A. match with IP Precedence
B. match with COS
C. matched with IP addresses , the MAC address , the VLAN number, protocol type, port number of the transport layer
D. matching with 802.1x
E. Configure the trusted port priority or packet priority on the interface
F. match with DSCP


Question #3
Which statement about WFQ is correct?

A. feature set WFQ function can be arranged as required command in system view QoS wfq dscp queue-length 64 queue -number 64
B. with the same group only depending on the IP precedence or DSCP different priority queues assigned
C. phase only according to the same group of different DSCP priority assigned different queues
D. phase only according to the same group of different IP priorities are assigned different queues
E. can use WRED congestion avoidance control


Question #4
Use the displa ike peer command to display the following information on the device, and you can know from this information ____ .
KE Peer: 123
exchange mode: aggressive on phase 1
pre-shared-ke simple 123
peer id tpe: name
peer ip address: 10.2.1.1
local ip address:
peer name: aaa
nat traversal: enable
dpd:

A. is not configured for the local security gateway lP address, IKE local gateway negotiation lP address of the interface will use the security policy of the main lP address
B. In the IKE negotiation negotiation mode in phase master mode
C. During the first phase of IKE negotiation, the initiator sends its name to the peer to identify its identity
D. The name of the local security gateway during IKE negotiation is aaa


Question #5
Configure PKI domain trusted CA ( certification authority as ) H3CCA , and configured the registration server URL for the CA . h3c . com commands respectively for the ____ .

A. In PKI domain view, configure CErtificate identifier-H3CCA
B. Configure CErtificate url ca in the PKI domain view . h3c . com
C. In the PKI domain view, arranged CERTIFICATE CA Request URL . h3c . com
D. In PKI domain view, configure ca.identifier H3CCA


Solutions:

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

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