H3C Large-Scale Routing Network Technologies V2.0 : GB0-381

Exam Code: GB0-381

Exam Name: H3C Large-Scale Routing Network Technologies V2.0

Updated: Aug 20, 2026

Q & A: 522 Questions and Answers

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H3C GB0-381 Exam Syllabus Topics:

SectionObjectives
Topic 1: Interior Gateway Protocols (IGP)- IS-IS
  • 1. TLV structure and routing updates
    • 2. Level-1 and Level-2 design
      - OSPF
      • 1. LSA types and flooding mechanisms
        • 2. Route calculation and SPF algorithm
          • 3. Area design and hierarchy
            Topic 2: Large-Scale Network Routing Fundamentals- IP Routing Principles
            • 1. Routing table construction and lookup mechanisms
              • 2. Static vs dynamic routing concepts
                - Network convergence and scalability considerations
                Topic 3: IPv6 Routing Technologies- IPv6 IGP and BGP support
                - IPv6 addressing and routing principles
                Topic 4: Large-Scale Network Design- Route aggregation and summarization
                - Scalability and redundancy design
                - Hierarchical network architecture
                Topic 5: Exterior Gateway Protocols (EGP)- BGP
                • 1. Route reflection and confederations
                  • 2. Route selection process
                    • 3. BGP session establishment and attributes
                      Topic 6: Advanced Routing and Traffic Engineering- MPLS basics and applications
                      - Traffic engineering concepts
                      - Policy-based routing (PBR)

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

                      1. 在如图所示的拓扑中, RTA 、 RTB 、 RTC 和 RTD 上分别执行如下配置:
                      RTA] ospf 1 router-id 1.1.1.1
                      RTA-ospf-1] area 0
                      RTA-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
                      RTA-ospf-1-area-0.0.0.0] network 1.1.1.1 0.0.0.0
                      RTB] ospf 1 router-id 2.2.2.2
                      RTB-ospf-1] area 0
                      RTB-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
                      RTB-ospf-1-area-0.0.0.0] network 2.2.2.2 0.0.0.0
                      RTB-ospf-1] area 1
                      RTB-ospf-1-area-0.0.0.1] network 192.168.2.0 0.0.0.255
                      RTC] ospf 1 router-id 3.3.3.3
                      RTC-ospf-1] area 1
                      RTC-ospf-1-area-0.0.0.1] network 192.168.2.0 0.0.0.255
                      RTC-ospf-1] area 2
                      RTC-ospf-1-area-0.0.0.2] network 192.168.3.0 0.0.0.255
                      RTC-ospf-1-area-0.0.0.2] network 3.3.3.3 0.0.0.0
                      RTD] ospf 1 router-id 4.4.4.4
                      RTD-ospf-1] area 2
                      RTD-ospf-1-area-0.0.0.2] network 192.168.3.0 0.0.0.255
                      RTD-ospf-1-area-0.0.0.2] network 4.4.4.4 0.0.0.0
                      那么在 RTD 上可以观察到的路由有 _________

                      A) 192.168.2.0/24
                      B) 3.3.3.3/32
                      C) 192.168.3.0/24
                      D) 1.1.1.1/32


                      2. 对于 IS-IS 和 OSPF 的组网和适用场景,下列描述正确的是 ______ 。

                      A) IS-IS 的协议报文是 TLV 格式,很容易扩展而支持各种网络协议,如 IPv6 ;而 OSPFv2 的协议报文是基于 IP 的,并与 IPv4 结合过于紧张,因而难以扩展支持 IPv6
                      B) 虽然两者都支持大规模分层网络,但 OSPF 在企业级网络应用更为广泛
                      C) IS-IS 的骨干区域所有 Level-2 和 Level-1-2 系统组成,因为没有虚连接,所以要求物理上必须是连续的
                      D) OSPF 的骨干区域编号必须是 0 ,而且是连续的,可以通过虚连接保证其连续性


                      3. 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 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$
                      B) 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$
                      C) 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$
                      D) 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


                      4. 在某路由器上 displaospfv3 route 的输出如下:
                      E1 - Tpe 1 external route, IA - Inter area route, I - Intra area route
                      E2 - Tpe 2 external route, * - Selected route
                      OSPFv3 Router with ID ( 2.2.2.2) ( Process 1)
                      ------------------------------------------------------------------------
                      *Destination: 1::1/128
                      Tpe: IA Cost: 1562
                      NextHop: FE80::1 Interface: Tun1
                      *Destination: 2::2/128
                      Tpe: I Cost: 0
                      NextHop: directl-connected Interface: Loop0
                      *Destination: 3::3/128
                      Tpe: IA Cost: 1562
                      NextHop: FE80::3 Interface: Tun3
                      *Destination: 2009:1::/64
                      Tpe: IA Cost: 1563
                      NextHop: FE80::1 Interface: Tun1
                      *Destination: 2009:2::/64
                      Tpe: I Cost: 1
                      NextHop: directl-connected Interface: Vlan1
                      *Destination: 2009:3::/64
                      Tpe: IA Cost: 1563
                      NextHop: FE80::3 Interface: Tun3
                      该路由器学习到的跨区域路由共有 ______ 条。

                      A) 1
                      B) 3
                      C) 2
                      D) 4


                      5. 某路由器上启用了 RIP 协议,进程号为 1 ,优先级为 10 ;同时启用了 OSPF 协议,进程号为 100 ,优先级为 100 。如果 2 个进程同时学习到了 10.0.0.0/8 网段的路由,度量值分别为 1 (跳数)和 100 (开销值),下一跳分别为 1.0.0.1 和 1.0.0.2 。
                      路由器收到目的地址为 10.0.0.1 的报文后,如何处理 ?

                      A) 同时向 1.0.0.1 和 1.0.0.2 转发
                      B) 向 1.0.0.2 转发
                      C) 向 1.0.0.1 转发
                      D) 无法判断


                      Solutions:

                      Question # 1
                      Answer: B,C
                      Question # 2
                      Answer: A,B,C,D
                      Question # 3
                      Answer: B
                      Question # 4
                      Answer: D
                      Question # 5
                      Answer: C

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