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H3CSE-RS-SW Sample Questions:

1. IP 组播的优点包括。（选择一项或多项)

A) 增强报文发送效率
B) 降低服务器的负载
C) 有效控制网络流量
D) 尽最大努力转发

2. NTP 协议基于 UDP 传输协议报文,其 UDP 端口号为（)。

3. 下列关于 STP 协议的说法,正确的有

A) STP 中的端口从 Blocking 到 Forwarding 必须经过两个 ForwardDelay 的时长,此后才可以发送数据
B) 如果 STP 网络中存在大量的主机,则主机的频繁上下线会产生大量的 TCN BPDU
C) 当拓扑变化频繁时,会导致一些端口经常处于 Blocking 状态,可能会造成网络长期的中断
D) STP 网络中所有的 VLAN 共享一颗生成树,无法实现不同 VLAN 在 Trunk 链路上的负载分担

4. 如图所示的网络中,在交换机 SWA 上完成相应配置,且交换机 SWA 和各 PC 都学习到了相应的 ARP 表项 PCA 访问 PCB 时发送了 ICMP 请求报文,报文的目的 IP 地址为

A) 10.1.1.2
B) 10.1.1.1
C) 20.1.1.2
D) 20.1.1.1

5. 二台路由器通过局域网连接在 - 起,组成 VRRP 备份组,各接口上配置如下:
[RTA-GigabitEthernet1/0] display this
Ip address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 120 shutdown
[RTB-GigabitEthernet1/0] display this
Ip address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
从上述信息可以得知

A) 路由器 RTA 处于 VRRP Backup 状态,路由器 RTB 处于 VRRP Master 状态
B) 路由器 RTA 处于 VRRP Master 状态,路由器 RTB 处于 VRRP Backup 状态
C) 路由器 RTA 处于 VRRP Initialize 状态,路由器 RTB 处于 VRRP Master 状态
D) 路由器 RTA 处于 VRRP Master 状态,路由器 RTB 处于 VRRP Master 状态

Solutions: