H3C GB0-391 exam dumps - Constructing Secure optimized WANs v2.0

  • Exam Code: GB0-391
  • Exam Name: Constructing Secure optimized WANs v2.0
  • Updated: Jul 26, 2026     Q & A: 468 Questions and Answers

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H3C GB0-391 Exam Syllabus Topics:

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

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. The information displayed on the MSR router is as follows:
acl number 2000
rule 0 permit source 192.168.0.0 0.0.0.255
acl number 2002
rule 0 permit source 192.168.2.0 0.0.0.255
#
traffic classifier 2 operator and
if-match acl 2002
traffic classifier 1 operator and
if-match acl 2000
#
traffic behavior 2
queue af bandwidth pct 30
traffic behavior 1
queue ef bandwidth pct 30 cbs-ratio 25
#
qos polic test
classifier 1 behavior 1
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
duplex full
speed 10
ip address 192.168.1.1 255.255.255.0
qos appl polic test outbound
When the traffic rate of the packets with the source addresses of 192.168.0.2 , 192.168.2.2 , and 192.168.3.2 are 4Mbps , 4Mbps , 6Mbps , and no other background traffic is forwarded from port G0/1_ .
Then the following statement is correct _____

A) The forwarding rate of packets with the source address of 192.168.2.2 is about 1.5Mbps
B) The forwarding rate of packets with the source address of 192.168.0.2 is about 1.5Mbps
C) The forwarding rate of packets with the source address of 192.168.0.2 is about 4Mbps
D) The forwarding rate of packets with the source address of 192.168.0.2 is about 3Mbps
E) The forwarding rate of packets with the source address of 192.168.2.2 is about 3Mbps
F) The forwarding rate of packets with the source address of 192.168.2.2 is about 4Mbps


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

A) 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
B) The public network label is dynamically allocated, while the private network label is statically allocated
C) The value of the public network label and the private network label carried in the message must be different
D) The format of the public network label is different from that of the private network label


3. About MPLS label to sign in S description field of the right is _______ .

A) S is 1 indicates that the MPLS label one last a th MPLS label, followed by a MPLS packet payload
B) S word segment only .1 th bit
C) S is 0 indicates that the MPLS standard tab first, last a MPLS label, followed by a MPLS packet payload
D) S used to identify the presence or absence in the MPLS nested label, a packet can have more than one MPLS label


4. What is correct about DOS attacks is ____ .

A) on to DOS attacks in the TCP FLOOD attack, you can use TCP proxy mechanism to defense
B) on to DOS attacks can be controlled by configure access lists on a network device to defense
C) for at DOS attack in the FTP FLOOD attack can be taken to limit the number of connections per second to defense
D) DOS attacks are aimed at reducing the ability of the attacked system to provide services


5. t If the device with a single burst rate dual-token bucket algorithm for traffic measurement, assume that a moment about a 400 -byte packet arrives, then CBS so that the number of tokens in the token bucket is 300 characters Section, the message will be marked as

A) Cheng Connaught the rate
B) exceed the committed rate
C) peaks in the rate of value
D) exceed the peak rate


Solutions:

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

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