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

"Constructing Secure optimized WANs v2.0", also known as GB0-391 exam, is a H3C Certification. With the complete collection of questions and answers, PrepAwayPDF has assembled to take you through 468 Q&As to your GB0-391 Exam preparation. In the GB0-391 exam resources, you will cover every field and category in H3CSE-Routing & Switching Certification helping to ready you for your successful H3C Certification.

  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Certification Provider: H3C
  • Corresponding Certification: H3CSE-Routing & Switching
  • Updated: Aug 02, 2026
  • No. of Questions: 468 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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H3C GB0-391 Exam Syllabus Topics:

SectionObjectives
WAN Optimization Technologies- Traffic optimization and QoS principles
- Application acceleration techniques
Enterprise WAN Deployment and Management- WAN deployment models
- Monitoring and troubleshooting WAN networks
Secure WAN Construction- VPN technologies and encryption basics
- WAN security policies and access control
WAN Fundamentals and Architecture- Enterprise WAN design principles
- WAN technologies overview

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. A certain H.323 gateway received an RRJ message when registering with the gatekeeper , indicating that ____ .

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


2. As shown in the figure, when HostA accesses HostB , which device is the most downstream device ?

A) LSR3
B) LSR2
C) LSR1
D) is not determined


3. Which of the following statements about IPSec and IKE is correct is ____ .( Choose one or more )

A) IKE is only responsible for providing security keys for IPSec establishment and does not participate in IPSec SA negotiation
B) IKE only with IPSec in conjunction
C) After IPSec SA is established, data forwarding has nothing to do with IKE
D) IPSec can only establish a security association through cooperation with IKE


4. W has been configured with the following commands in the MSR router:
acl number 2000
rule 0 permit source 192.168.0.0 0.0.0.255
#
traffic classifier 1 operator and
if-match acl 2000
#
traffic behavior 1
car cir 1000 cbs 62500 ebs 0 green pass red discard
#
qos polic test
classifier 1 behavior 1
When the device only needs to enter the interface G0 / 0 network segment 192.168.0.0/24 packets to limit speed of 1Mbps operation.In connection port G0 / 0 following configuration is incorrect.

A) qos car outbound an cir 1000 cbs 62500 ebs 0 green pass red discard
B) qos car inbound an cir 1000 cbs 62500 ebs 0 green pass red discard
C) qos appl polic test inbound
D) qos car inbound acl 2000 cir 1000 cbs 62500 ebs 0 green pass red discard


5. In the GRE encapsulation of IP over IP , the hexadecimal value of the Protocol Tpe field of the GRE header is Ox____ .( Fill in 16 hexadecimal digits )

A) 0800


Solutions:

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

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