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H3C GB0-372 Exam Syllabus Topics:

H3CSE-RS-SW Sample Questions:

1. 关于配置 BPDU 和 TCNBPDU ,说法正确的有

A) 配置 BPDU 通常仅由根桥周期性发出, TCNBPDU 除根桥外其他网桥都可能发出
B) Alternate 端口既不会发送配置 BPDU 也不会发送 TCNBPDU
C) 配置 BPDU 通常仅从根端接收, TCNBPDU 仅从指定端口接收
D) 配置 BPDU 仅从指定端口发出, TCNBPDU 仅从根端口发出

2. 关于 TCNBPDU 的产生,下列说法正确的有

A) 网络中某交换机的指定端口链路断掉,则该交换机一定会产生 TCNBPDU
B) 网络中某交换机的 alternate 端口 down 掉,则该交换机不会产生 TCN BPDU
C) 启用 STP 的非根桥交换机如果某端口连接了 PC 机,当该端口进入 Forwarding 状交换机不会产生 TCN BPDU
D) 当交换机某端口选择为指定端口或根端口时,交换机会立即发送 TCNBPDU

3. AA 是网络安全的 - 种管理机制,它可以提供哪些安全功能

A) 接入（ Access )
B) 控制（ ACL )
C) 认证（ Authentication )
D) 计费（ Accounting )

4. PIM 中 Hello 报文的组播目的地址是以下哪 - 项 ?

A) 224.0.0.5
B) 224.0.0.21
C) 224.0.0.9
D) 224.0.0.13

5. 如图所示组网中, RT1 、 RT2 和 RT3 之间运行 PIMSM 协议, RP 为 1.1.1.1RT3 上连有接收者,且在相应接口上使能 IGMP 组播源 2.2.2.2 连接在 RT2 上在 RT3 查看单播路由表如下:
[RT3] display ip routing-table Routing Tables: Public Destinations: 11 Routes: 12Destination/MaskProtoPreCost NextHop Interface
/1.1.1.1/320SPF 10 1562 192.168.0.1 S0/2/0
|2.2.2.2/320SPF 10 1562 192.168.2.1 so/2/1/127.0.0.0/8 Direct 00127.0.0.1 InLoopO/127.0.0.1/32Direct 00127.0.0.1 InLoopo/192.168.0.0/30Direct 00192.168.0.2 S0/2/0[192.168.0.1/32Direct 00192.168.0.1 S0/2/0|192.168.0.2/32Direct 00127.0.0.1 InLoopo/192.168.1.0/300SPF 10 3124192.168.2.1 so/2/1OSPF 10 3124 192.168.0.1 S0/2/0
/192.168.2.0/30Direct 00192.168.2.2 so/2/1/192.168.2.1/32Direct 00192.168.2.1 so/2/1[192.168.2.2/32Direct 00127.0.0.1 InLoopo
那么,当接收者（ Receiver )发送组加入请求后,下列哪些路由器上存在（ * , G )表项

A) RT2
B) RT3
C) RT1

Solutions: