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H3C GB0-381 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: IPv6 Routing Technologies | - IPv6 IGP and BGP support - IPv6 addressing and routing principles |
| Topic 2: Interior Gateway Protocols (IGP) | - OSPF
|
| Topic 3: Advanced Routing and Traffic Engineering | - MPLS basics and applications - Traffic engineering concepts - Policy-based routing (PBR) |
| Topic 4: Large-Scale Network Design | - Route aggregation and summarization - Hierarchical network architecture - Scalability and redundancy design |
| Topic 5: Exterior Gateway Protocols (EGP) | - BGP
|
| Topic 6: Large-Scale Network Routing Fundamentals | - IP Routing Principles
|
H3C Large-Scale Routing Network Technologies V2.0 Sample Questions:
1. 下列哪一个地址前缀列表匹配了缺省路由 ?
A) permit 0.0.0.0 less-eual 32
B) permit 0.0.0.0 0
C) permit 255.255.255.255 0 less-eual 32
D) permit 255.255.255.255 0
2. 如下三个 AS 组成的网路中, AS200 向外发布本地网段路由 10.1.1.0/24 。主要设备配置如下所示。
RTA :
bgp 100
dampening
undo snchronization
peer 1.1.1.1 as-number 200
peer 2.2.2.2 as-number 300
peer 1.1.1.1 ebgp-max-hop 2
peer 1.1.1.1 connect-interface LoopBack0
peer 2.2.2.2 ebgp-max-hop 2
peer 2.2.2.2 connect-interface LoopBack0
RTB :
bgp 200
network 10.1.1.0 255.255.255.0
undo snchronization
peer 10.10.10.10 as-number 100
peer 10.10.10.10 ebgp-max-hop 2
peer 10.10.10.10 connect-interface LoopBack0
系统每次衰减值为 1000 ,且关于衰减的缺省参数为:
Ceiling Value: 16000
Reuse Value: 750
Reach HalfLife Time(in second): 900
Unreach HalfLife Time(in second): 900
Suppress-Limit: 2000
则 RTB 的本地网段 10.1.1.0/24 连续发生 ____ 次震荡(中断后又立即回复)后, RTC 上不再有该路由,直到 RTB 该路由的惩罚值小于 ____ 。
A) 2 750
B) 2 2000
C) 3 750
D) 3 2000
3. 在 MSR 路由器 RTA 上执行 displaospf lsdb 命令后,路由器输出如下:
从以上输出可以判断 _______ 。
A) LSDB 中不存在 Tpe7 LSA
B) LSDB 中存在两条 Tpe5 LSA
C) 这是一台 ASBR
D) 这是一台 ABR
4. 组网如图示,用户 AS 号为 100 ,分别通过 ISP1 、 ISP2 接入 Internet , ISP1 的 AS 列表为 {201 、 202 、 203} , ISP2 的 AS 列表 {301 、 302 、 303} ,要求用户访问 ISP1 始发路由时优先选择 ISP1 线路,访问 ISP2 始发路由时优先选择 ISP2 线路,访问其他 Internet 地址优先选择 ISP1 ,请问应该如何实现 ?
A) RTA] bgp 100 peerRTD route-polictest import default local-preference 200 route-polictest permit node 10 if-match as-path 1 appllocal-preference 300 route-polictest permit node 20 ip as-path 1 permit _201$ ip as-path 1 permit _202$ ip as-path 1 permit _203$ RTB] bgp 100 default local-preference 200
B) .RTA] bgp 100 default local-preference 200 RTB] bgp 100 peerRTD route-polictest import route-polictest permit node 10 if-match as-path 1 appllocal-preference 300 ip as-path 1 permit _301$ ip as-path 1 permit _302$ ip as-path 1 permit _303$
C) RTA] bgp 100 peerRTD route-polictest import default local-preference 200 RTB] bgp 100 peerRTD route-polictest import route-polictest permit node 10 if-match as-path 1 appllocal-preference 200 ip as-path 1 permit _301$ ip as-path 1 permit _302$ ip as-path 1 permit _303$
D) RTA] bgp 100 peerRTD route-polictest import default local-preference 200 route-polictest permit node 10 if-match as-path 1 appllocal-preference 200 ip as-path 1 permit _201$ ip as-path 1 permit _202$ ip as-path 1 permit _203$ RTB] bgp 100 peerRTD route-polictest import route-polictest permit node 10 if-match as-path 1 appllocal-preference 200 ip as-path 1 permit _301$ ip as-path 1 permit _302$ ip as-path 1 permit _303$
5. 关于地址前缀列表匹配流程,以下哪些说法是正确的 ?
A) 在前缀列表中,每一个表项都指定了相对应的匹配模式,包括允许和拒绝两种模式
B) 匹配的过程中,路由器按升序依次检查索引号标识的各个表项,只要某一表项满足条件,就意味着通过该地址前缀列表的过滤
C) 在前缀列表中,如果所有表项都是拒绝模式,则任何路由都不能通过该过滤列表
D) 匹配的过程中,路由器按升序依次检查索引号标识的各个表项,只有所有表项满足条件,才意味着通过该地址前缀列表的过滤
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A,B | Question # 4 Answer: C | Question # 5 Answer: A,B,C |






