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

  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Updated: Jul 30, 2026
  • Q&As: 468 Questions and Answers

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GB0-391 exam dumps

H3C GB0-391 Exam Syllabus Topics:

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

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. When the user uses the phone, after picking up the phone handle and inputting the called number, what kind of signaling does the ring back from the receiver belong to ______ .

A) Call call signaling
B) letter information signaling
C) to address signaling
D) monitoring tube signaling


2. The quality of service of a data network usually has different requirements due to different services.Compared with data services, voice and video services are more focused on

A) band width
B) Maximum number of concurrent connections
C) When the delay jitter
D) When delay


3. The configuration commands on the MSR router are as follows:
acl number 2001
rule 0 permit source 192.168.2.0 0.0.0.255
acl number 2002
rule 0 permit source 192.168.3.0 0.0.0.255
acl number 2003
rule 0 permit source 192.168.0.0 0.0.0.255
#
traffic classifier 2 operator or
if-match acl 2001
if-match acl 2002
if-match acl 2003
#
traffic behavior 2
filter den
#
qos polic 2
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos appl polic 2 outbound
Then when the source address are 192.168.2.2 , 192.168.3.2 , 192.168.0.2 the packets from the port G0 / 1 forwarding outwardly, the following statement is incorrect ______

A) three message by the flow are blocked
B) Packets with source address 192.168.3.2 are forwarded normally
C) Forwarding of packets whose source address is 192.168.2.2 is blocked
D) Packets with the source address of 192.168.0.2 are forwarded normally


4. In the BGP MPLS VPN networking, the public network label will not exist in which of the following locations _______ .

A) In the private network packet forwarded by PE to CE
B) Private network routing between PE and CE
C) In the private network packet forwarded by the PE to the P device
D) Private network routing between PEs


5. Which of the following descriptions about H.323 terminals are correct?

A) even connected to the PSTN telephone network fax machine is a standard H.323 terminal equipment
B) P pass H.323 terminals may not support the video feature
C) & Poor pass H.323 terminal may not support fax functionality
D) P through PST telephone is a standard H.323 terminal


Solutions:

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

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