Pass your actual test with our H3C GB0-392 training material at first attempt
Last Updated: Sep 07, 2026
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| Section | Weight | Objectives |
|---|---|---|
| Network Monitoring and Troubleshooting | 20% - 25% | - Traffic Analysis - Root Cause Analysis - Fault Detection - Performance Monitoring Tools |
| Network Service Optimization Fundamentals | 10% - 15% | - Service Optimization Principles - Network Performance Indicators - NSO Concepts |
| Security and Service Assurance | 10% - 15% | - Service Availability Assurance - Network Security Optimization - Risk Identification and Mitigation |
| High Availability and Reliability | 10% - 15% | - Redundancy Technologies - Fast Recovery Mechanisms - Network Resilience Design |
| Routing and Switching Service Analysis | 20% - 25% | - Switching Performance Analysis - Convergence Optimization - Routing Protocol Optimization |
| Quality of Service Optimization | 15% - 20% | - Traffic Classification - Congestion Management - QoS Models - Bandwidth Optimization |
Question 1
在 MSR 路由器显示信息如下:
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
#
lnterface GigabitEthernet0/1 port link-mode route
Duplex full speed 10
lp address 192.168.1.1255.255.255.0
qos reserved-bandwidth pct 80
Qos appl polic test outbound
当源地址为 192.168.0.2 、 192.168.2.2 、 192.168.3.2 的报文流量速率分别为 4Mbps 、 4Mbps 、 6Mbps ,无其它背景流量,从端口 G0/1_ 向外转发时。
则以下说法不正确是
A. 源地址为 192.168.2.2 的报文转发速率约为 2.4Mbps
B. 源地址为 192.168.2.2 的报文转发速率约为 3Mbps
C. 源地址为 192.168.0.2 的报文转发速率约为 3Mbps
D. 源地址为 192.168.0.2 的报文转发速率约为 2.4Mbps
E. 源地址为 192.168.0.2 的报文转发速率约为 4Mbps
F. 源地址为 192.168.2.2 的报文转发速率约为 4Mbps
Question 2
关于 VoIP 电话系统中的回声,下列描述哪些是正确的 ?
A. 语音网关设备在执行模数转换时可能会引入回声,但可以在语音网关中配置回声抑制功能降低这种影响。
B. 语音网关设备本身并不带来新的回波,但由于 IP 网络带来网络时延,加大了回波时延,导致原来感觉不到的回波,在 VoIP 网络中变成能被感觉的回声。
C. 回声分为电学回声和声学回声,传统的电话系统中的电学回声主要是由于二、四线换阻抗不匹配引起的
D. VoIP 网络,回声与编码的选择有关系,压缩比越大的编码在网络中相对回声越大。
Question 3
M 在 BGP MPLS VPN 组网的某台公网设备上,采用 displa mpls ldp lsp 命令检查其标签转发表时,结果如下,说明。
[PE1] dis mpls ldp lsp
LDP LSP Information
-------------------------------------------------------------------------
SN DestAddress/Mask In/OutLabel Next-Hop In/Out-Interface
---------------------------------------------------------------------------------
1. 1.1.1.1/32 3/NULL 127.0.0.1 Eth0/0/InLoop0
2. 1.1.1.2/32 NULL/1024 100.0.0.2 ---------Eth0/0
3. 1.1.1.3/32 NULL/3 100.0.0.2 ---------Eth0/0
A. 1.1.1.3/32 是 PE1 的本地接口地址,所有出标签为 NULL ,入标签为 3
B. 1.1.1.3/32 是 PE1 的本地接口地址,所有出标签为 NULL ,出标签为 3
C. 1.1.1.3/32 是与 PE1 直连的公网设备接口地址,所以出标签为 1024
D. 1.1.1.3/32 是与 PE1 直连的公网设备接口地址,所以出标签为 3
Question 4
在 S3610 交换机上配置了如下命令:
Qos map-table dot1p-lp
Import 1 export 5
Interface Ethernet1/0/8
Port link-mode bridge
Port link-tpe trunk
Port trunk permit vlan 1 to 2
Qos trust dot1p
Interface Ethernet1/0/9
Port link-mode bridge
Port link-tpe trunk
Port trunk permit vlan 1 to 2
Qos gts queue 5 cir 1950 cbs 2000000
则当流量为 10Mbps 的 vlan id 为 2 且 802.1p 优先级为 1 的报文从端口 E1/0/8 进入,才端口 E1/0/9 转发时。
则下列说法正确的
A. 报文流量整形为 1950kbps 进行转发
B. 10Mbps 报文正常转发
C. E1/0/9 出方向报文 802.1p 优先级 1
D. 部分配置有误
E. E1/0/9 出方向报文 802.1p 优先级 5
Question 5
当队列长度达到最大值后,报文将采用方式丢弃
A. 尾丢弃
B. RED
C. 按时间顺序,丢弃最先进入队列的报文
D. WRED
Solutions:
| Question 1 Answer: B,C,E,F | Question 2 Answer: B,C | Question 3 Answer: A,D | Question 4 Answer: B,C | Question 5 Answer: A |
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