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GB0 280Chinese Exam Huawei Constructing Enterprise level Answer network Enterprise level route
GB0-280Chinese Huawei Braindump 
ExamSoon GB0-280Chinese Exams
Huawei Constructing Enterprise-level Routing Networks
 
O rder : GB0-280Chinese Exam
Practice Exam: GB0-280Chinese
Exam Number/Code: GB0-280Chinese
Exam Name: Constructing Enterprise-level Routing Networks
Questions and Answers: 296 Q&As 
Free GB0-280Chinese Braindumps
  
  
Exam : Huawei GB0-280
Title : Huawei(r) Constructing Enterprise-level Routing Networks
1. 下面有关BGP协议描述，错误的是（） 
A. BGP 是一个很健壮的路由协议 
B. BGP 可以用来检测路由环路 
C. BGP 无法聚合同类路由 
D. BGP 是由  EGP 继承而来的 
Answer: C
2. 协议的说法正确的有： 
A. ESP协议将用户数据进行加密后封装到IP包中，以保证数据的私有性 
B. 用户可以选择使用带密钥的Hash算法保证报文的完整性和真实性 
C. ESP协议使用32比特序列号结合防重放窗口和报文验证，防御重放攻击 
D. 在传输模式下，ESP协议对IP报文的有效数据进行加密 
E. 在隧道模式下，ESP协议对整个内部IP报文进行加密 
Answer: ABCDE
3. 对于route-policy的某个节点，路由信息依次匹配各if-match子句，通过某一条if-match子句的匹配，就意味着通过该
route-policy过滤。 
T. True
F. False
Answer: F
4. 下列关于骨干区域的描述，正确的是（  ） 
A. 骨干区域号的areaid是0.0.0.0 
B. 所有区域必须与骨干区域相连 
C. 骨干区域之间可以是不连通的 
D. 每个区域边界路由器ABR连接的区域中至少有一个是骨干区域 
Answer: ABD
5. 路由协议间相互引入对方的路由信息称为双向引入，为了防止双向引入时产生路由环路，可以采取 
A. 不允许在多边界点配置双向引入 
B. 使用filter-policy import 
C. 使用filter-policy export 
  
  
 

  
 
  
 
  
 
  
 
D. 使用防火墙 
Answer: B
6. 下列关于OSPF描述，正确的是（） 
A. 若网络拓扑结构发生变化，立即发送更新报文，并使这一变化在自治系统中同步 
B. 和  RIP 相比，可以节省带宽 
C. 支持以组播地址发送协议报文  
D. 度量值的取值范围为  0 ～  255 
E. 支持到同一目的地址的多条等值路由 
F. 从算法本身保证了不会生成自环路由 
G. 支持可变长子网掩码（  VLSM ） 
Answer: ABCEFG
7. OSPF使用IP报文直接封装协议报文，使用的协议号是（   ） 
A. 23
B. 89
C. 520
D. 170
Answer: B
8.  每个RADIUS 报文中可以携带（   ）个属性。 
A. 必须  1 个 
B. 必须  2 个 
C. 必须  3 个 
D. 可以多个 
Answer: D
9. 两台运行OSPF 协议的路由器正在进行链路状态数据库的同步，从其中一台上查看邻居状态机，已经达到FULL状
态。则可以推断出如下结论：此时在另一台路由器查看邻居状态机，应该同样达到  FULL 状态。( ) 
T. True
F. False
Answer: F
10. Integrated Service提供的不同于Best-Effort的服务类型是 
A. 先来先服务 
B. Guaranteed Service
C. Controlled-Load Service
D. 类似ISDN 的服务 
Answer: BC
11. 以下关于OSPF协议的说法正确的是（   ） 
A. 它是IETF 组织开发的一个基于链路状态的自治系统内部路由协议 
B. 由于OSPF通过收集到的链路状态用最短路径树算法计算路由，从算法本身保证了不会生成自环路由 
C. 允许自治系统的网络被划分成区域（AREA）来管理，区域间传送的路由信息被进一步抽象，从而减少了占用网络的
带宽 
D. 在有组播发送能力的链路层上以组播地址收发报文，既达到了广播的作用，又最大程度地减少了对其他网络设备的干
扰 
Answer: ABCD
12. 对于OSPF协议中路由器之间的邻接关系（adjacency），下面说法正确的有（） 
A. 两台路由器，只要是双向的邻居关系（相互收到了对方的Hello报文），就自动成为了邻接关系 
B. 两台路由器如果是互为邻接关系，则它们之间的承载网络（underlying network）类型有可能是  point-to-point 
C. 两台路由器如果是互为邻接关系，则它们之间的承载网络（underlying network）类型有可能是  Point-to-
MultiPoint
D. 两台路由器如果是互为邻接关系，而且它们之间的承载网络（underlying network）类型是Broadcast，则必然有一台
 
  
 
 
  
  
 
   
     
  
 
 

 
   
 
   
     
     
   
 
   
路由器是DR或者是BDR 
E. 只有两台路由器是互为邻接关系，它们之间才交换LSA信息 
Answer: BCDE
13. 查看OSPF区域ABR、ASBR的信息，可以使用（   ） 
A. Display ospf
B. Display ospf error
C. Display ospf interface
D. Display ospf peer
Answer: A
14. RTA向RTB通告一条从EBGP 相邻体学到的路由1.1.1.0/24， RTA和RTB在同AS中，一其属性为 
  local preference:100 
  MED: 100 
  AS_PATH: 200 
  Origine : EGP 
  Next_hop :88.8.8.1/16 
  RTB接收到的路由1.1.1.0/24的属性为（   ） 
A. Local preference:空, MED: 100, AS_PATH: 200 100 ,Origine :EGP, next_hop: 10.110.20.1/16 
B. Local preference:100, MED: 100, AS_PATH: 200 ,Origine :EGP, next_hop: 88.8.8.1/16
C. Local preference:100, MED:空, AS_PATH: EGP, Origine :EGP, next_hop: 10.110.10.1/16 
D. Local preference:空, MED: 0, AS_PATH: 100 200, Origine :EGP, next_hop: 88.8.8.1/16Answer: B 
10.路由协议间相互引入对方的路由信息称为双向引入，为了防止双向引入时产生路由环路，可以采取 
A. 不允许在多边界点配置双向引入 
B. 使用filter-policy import 
C. 使用filter-policy export 
D. 使用防火墙 
Answer: B
15. BGP的团体是一组有公共性质的目的地。一个团体限于一个网络或一个自治系统（ ） 
T. True
F. False
Answer: F
16. VPN 给服务提供商（ISP ）以及  VPN 用户带来的益处包括哪些？ 
A. ISP 可以与企业建立更加紧密的长期合作关系，同时充分利用现有网络资源，提高业务量 
B. VPN 用户节省费用 
C. VPN 用户可以将建立自己的广域网维护系统的任务交由专业的ISP来完成 
D. VPN 用户的网络地址可以由企业内部进行统一分配 
E. 通过公用网络传输的私有数据的安全性得到了很好的保证 
Answer: ABCDE
17. WRED中，在考查队列长度时，为什么要采用平均队列的方式？ 
A. 因为无法直接计算队列的长度 
B. 采用平均队列的方式，可以平衡资源的占用 
C. 直接采用队列的长度和低限、高限比较并进行丢弃（这是设置队列门限的绝对长度），将会对发性的数据流造成不公
正的待遇，不利于数据流的传输 
D. 不采用平均队列的方式，支持的业务数量就不多 
Answer: C
18. 下列哪些类型是OSPF对网络拓扑的抽象描述（   ） 
A. 接口所连的网段中只有本路由器自己 
B. 接口通过点到点的网络与一台路由器相连 
C. 接口通过广播或  NBMA 的网络与多台路由器相连 
D. 接口通过点到多点的网络与多台路由器相连 
 

  
   
   
      
  
  
   
      
  
Answer: ABCD
19. 在BGP路由协议中，公认团体属性NOEXPORT的作用是（  ） 
A. 传递这一团体属性值的路由不应被通告给一个联盟之外的对等体 
B. 传递这一团体属性值的路由，在收到后，不应通告给任何  BGP 的对等体 
C. 传递这一团体属性值的路由，在收到后，不应通告给任何  EBGP 的对等体 
D. 以上都不对 
Answer: A
20. 在BGP协议中，对环路的避免的方法有（   ） 
A. 在路由的origin 属性中记录路由的起源 
B. 在路由的AS-Path 属性中记录所有途经的  AS 
C. 在路由的Next-Hop 属性中纪录路由的下一跳 
D. 在路由的MED属性中影响另一AS的出口选择 
Answer: B
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