H3C GB0-381

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H3C GB0-381 Exam Syllabus Topics:

H3C Large-Scale Routing Network Technologies V2.0 Sample Questions:

Question #1
E 如图所示, RTB 与 RTC 各从 RTD 学到 EBGP 路由 N , RTB 缺失 LOCAL_PREF 设置为 200 , RTA 与 RTB 、 RTC 之间通过 loopback 建立 IBGP 邻居关系, RTA 路由表中,只有 N 、 RTB 与 RTC 的 loopback 、 RTA 自身直接路由,如果 RTB 因为电源故障宕机,请问在 RTA 上,路由 N 能否马上切换到 RTC?

A. 不可以,因为 RTA 与 RTB 是通过 loopback 地址建立 IBGP 邻居关系的,如果改进互连接口可以上切换
B. 可以,因为 RTA 和 RTB 的邻居关系中断, RTA 立刻切换到 RTC
C. 可以,因为指向 RTB 的那条路由 N 下一跳不可达, RTA 立刻切换到 RTC
D. 不可以,因为 RTA 和 RTB 的邻居关系要等到 holdtime 超时才能中断,大概需要 3 分钟才能切换过去

Question #2
关于 OSPF 协议和 RIPv2 协议的比较,以下说法正确的是

A. RIPv2 协议以跳数作为路由度量值,而 OSPF 协议开销（ cost )作为路由度量值
B. 两种协议都支持路由信息触发更新
C. 两种协议都是常见的 IGP 路由协议,都支持按类自动聚合
D. OSPF 协议支持 VLSM ,而 RIPv2 协议不支持

Question #3
图示是 BGP 多出口企业网络。关于在多出口企业网络中的 BGP 部署,以下说法中正确的是:

A. 方式（ 2 )中, RTC 可以依据自己的策略,通过通过 IGP 协议选择其中莫条缺省路由到达 Internet 。
B. BGP 多出口企业网络中,可以有（ 1 ) ISP 只发布缺省路由,（ 2 ) ISP 发布缺省路由部分和 Internet 明细路由,（ 3 ) ISP 发布全部 Internet 路由三种方式。
C. 通常,在方式（ 3 ) RTC 可以根据自己的策略,通过 BGP 来选择访问 Interner 的最优路径。
D. 方式（ 1 )中, RTC 可以依据自己的策略,通过 IGP 来选择其中某条缺省路由而到达 Internet 。

Question #4
如图所示 IS-IS 网络中, RTA 、 RTC 、 RTD 、 RTE 互相建立 Level-2 邻接关系； RTB 、 RTA 、 RTC 建立 Level-1 邻接关系。各路由器理由稳定后, RTB 访问 192.168.14.1 时选择下一跳为 ______ 。
如果此时 RTC 添加如下配置:
RTC-isis-1]import-route isis level-2 into level-1
那么 RTB 再访问 192.168.4.1 时选择下一跳为 ______ 。

A. RTC ； RTC
B. RTC ； RTA
C. RTA ； RTC
D. RTA ； RTA

Question #5
IS-IS 协议报文分为 IIH 、 CSNP 、 PSNP 和 LSP ,这四种报文分类是通过 ______ 标识的。

A. IS-IS 专用报文头
B. CLV
C. IS-IS 通用报文头
D. 链路层报文头

Solutions: