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H3CSE-RS-SW valid practice questions & GB0-372 exam pdf torrent & H3CSE-RS-SW latest study dumps

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H3CSE-RS-SW Sample Questions (Q158-Q163):

NEW QUESTION # 158
组播 IP 地址为 229.130.130.1 ,其对应的组播 mac 地址为 .

A. 00-00-5E-82-82-01
B. 01-00-5E-82-82-01
C. 01-00-5E-02-82-01
D. 00-00-5E-02-82-01

Answer: C

NEW QUESTION # 159
如图组网, SWA 和 SWB 启用 STP SWC 没有启用 STP 初始时链路 2 没有连接, PCB 可以将数据发到 PCA ,如果此时链路 1 故障,维护人员将链路 2 连接,则关于 PCB 到 PCA 数据传送业的恢复过程的说法正确的有（假设 PCA 不会主动发送数据)

A. 当 SWB 的端口 EO/1 进入 Forwarding 状态会引发拓扑改变处理过程,所以业务最终恢复需要默认 30+15=45 秒的时间
B. 业务恢复需要等待 SWC 的 MAC 地址老化,所以需要默认 300 秒的时间
C. 由于 SWB 的端口 EO/1 默认需要 30 秒的时间进入转发状态,所以业务需要默认 30 秒的时间才能恢复
D. 由于 SWA 链路中断会引发拓扑改变处理过程,使得 SWA 和 SWB 的 MAC 地址老化时间缩短,所以业务恢复默认需要 15 秒时间

Answer: B

NEW QUESTION # 160
关于 IP 报文的优先级标记,说法正确的有。（选择 - 项或多项)

A. DSCP 中定义了四类网络流程,其中加速转发 EF 类分为四个小类 EF1/2/3/4
B. 802.1P 优先级由 VLAN tag 中的 prionity 字段标识
C. 当前 IP 报文的 TOS 字段,包含 IP 优先级,服务类型两个字段,其中 IP 优先级占 3bit
D. 802.1P 优先级分为 0-3 共 4 个等级

Answer: B,C

NEW QUESTION # 161
在如图所示的交换网络中,交换机 SWA 上设置 VLAN10 为 Isolate-user-vlan VLAN2 和 VLAN3 为 VLAN 10 的 Secondary VLAN ；交换机 SWB 上创建 VLAN4 和 VLAN20 ,并且设置 VLAN20 为 Isolate-user-vlan , VLAN4 为 VLAN20 的 Secondary VLA 按照如图所示设置好各设备的 IP 地址后,如果在 SWA 和 SWB 上都开启了本地代理 ARP 功能,并且 SWA 和 SWB 都允许发送 ICMP 报文,则在 PCA 上执行命令 tracert 10.1.1.2 , PCA 上将显示需要经过跳才能到达 PCB （)请填写阿拉伯数字

Answer:

Explanation:
2

NEW QUESTION # 162
客户要求在网络设计时,关键部位必须有高可靠性设备,且可靠性要达到 99.999% 则设备的运行情况应满足

A. MTBF>Y9 年； MTTR<U1
B. MTBF>Y699
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