H3CSE-Routing & Switching GB0-372

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H3CSE-RS-SW Sample Questions:

1. 二台路由器通过局域网连接在一起,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
[RTB-GigabitEthernet1/0] display this
Ip address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.1.254
从上述信息可以得知

A) RTA 、 RTB 无法选举出备份组 Master 路由器
B) RTB 为备份组 Master 路由器
C) RTA 、 RTB 都处于 VRRP Master 状态
D) RTA 为备份组 Master 路由器

2. 交换机 SWA 使用出厂缺省配置现在要把交换机 SWA 的 Ethernet 1/0/1 端口配置为 Trunk 端口, PVID 为 VLAN20 ,且允许 VLAN10 。
下面的配置过程正确的是 ________

A) [SWA] vlan10 [SWA-vlan10] quit [SWA] vlan 20 [SWA-vlan20] quit [SWA] interface Ethernet 1/0/1 [SWA-Ethernet1/0/1] port access vlan 20 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk permit vlan 10
B) [SWA] vlan10 [SWA-vlan10] quit [SWA] vian 20 [SWA-vlan20] quit [SWA] interface Ethernet 1/0/1 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk pvid vlan 20 [SWA-Ethernet1/0/1] port trunk permit vlan 10
C) [SWA] interfaceEthernet 1/0/1 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk pvid vlan 20 [SWA-Ethernet1/0/1] port trunk permit vlan 10 [SWA-Ethernet1/0/1] quit [SWA] vlan 10 [SWA-vlan10] quit [SWA] vlan 20
D) [SWA] vlan10 [SWA-vlan10] quit [SWA] vlan 20 [SWA-vlan20] port Ethernet 1/0/1 [SWA-vlan20] quit [SWA] interface Ethernet 1/0/1 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk permit vlan 10

3. 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 在 RT3 查看单播路由表如下:
[RT3] display ip routing-table Routing Tables: Public Destinations: 10 Routes: 10Destination/MaskProtoPreCost NextHop Interface
/1.1.1.1/320SPF 10 1562192.168.2.1 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 3124 192.168.2.1 so/2/1|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) RT1
B) RT3
C) RT2

4. 关于组播分发树模型 SPT ,以下表述正确的是。

A) SPT 模型中,组播源到达任何一个接收者所经过的路径都是最优的
B) SPT 上的每台路由器都会维护（ S , G )表项
C) 不同组播源以自己为根,独立建立 SPT
D) SPT 上的每台路由器都会维护（ * , G )表项

5. 以下哪些协议不是运行在主机和路由器之间的组播组管理协议 ?

A) MSDP
B) PIM-DM
C) IGMPV2
D) PIM-SM
E) MLD

Solutions: