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Exam Number/Code: GB0-283
Exam Name: Constructing Enterprise-level Routing Networks
Language(s): English
Price: $ 69.00
Questons and Answers : 300 Q&As
Updated: 2009-12-14
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Exam : HuaWei GB0-283
Title : Constructing Enterprise-level Routing Networks
1. OSPF协议中的一个普通区域通过ASBR注入192.168.0.0/24~192.168.0/24共4条路由,在ABR中配置聚合为一条聚合路由192.168.0.0/22,此时ABR会向其他区域发布哪几条路由( )
A. 一条聚合路由
B. 四条明细路由
C. 一条聚合路由和四条明细路由
D. 一条都不发布
Answer: B
2. 如图,区域1是NSSA区域,RouterD是其区域中的ABR,在RouterD上做如下配置
ospf 1
area 0.0.0.1
network 10.45.0.0 0.0.0.255
nssa default-route-advertise
#
area 0.0.0.0
network 4.4.4.4 0.0.0.0
network 10.34.0.0 0.0.0.255
关于以上组网、配置,下列说法正确的是( )
A. RouterD在area1中发布一条7类缺省LSA,RouterE、RouterF都能收到这条LSA。
B. RouterD在area1中发布一条5类缺省LSA,RouterE、RouterF都能收到这条LSA。
C. RouterC能收到RouterD发布的5类缺省LSA。
D. 以上说法均不正确。
Answer: A
3. 下列关于队列调度的几种说法中,正确的是( )
A. WFQ在每个队列上和CQ的丢弃机制一样,都是采用Tail Drop;
B. WFQ对流的分类可以通过ACL来实现;
C. CBWFQ是对WFQ的一种改进,和WFQ的基本调度方式一样;
D. LLQ在调度时首先检查低时延队列,从该队列取报文,如果该队列没有报文时才转向其它非低时延队列;但又采用了其他机制,防止有队列饿死。
Answer: D
4. CAR在IP层实现,因而只能对到达IP层的报文进行限速;相比CAR来说,LR能够限制在物理接口上通过的所有的报文。
T. True
F. False
Answer: T
5. 关于OSPF协议中的路由聚合,论述错误的有( )
A. ABR会自动聚合路由,无需手工配置
B. 只能在ABR上做聚合
C. 一台路由器同时做ABR和ASBR,它就不能聚合路由
D. ASBR上能聚合任意的外部路由
Answer: ABCD
6. 关于IPSec安全联盟(Security Association)的说法正确的是( )
A. IPSec对数据流提供的安全服务通过安全联盟SA来实现
B. 一个安全联盟SA就是两个IPSec系统之间的一个单向逻辑连接
C. 输入数据流和输出数据流由输入安全联盟与输出安全联盟分别处理
D. 安全联盟可通过手工配置和自动协商两种方式建立
Answer: ABCD
7. OSPF协议使用的组播地址是( )
A. 224.0.0.5
B. 224.0.0.6
C. 224.0.0.9
D. 224.0.0.10
Answer: AB
8. 下列关于QoS在接入,汇聚,核心层的描述正确的是( )
A. QoS在接入,汇聚,核心层的实现机制都是相同的。
B. 通常在接入层进行报文的分类和标记。
C. 通常在接入层一般不配置QoS机制。
D. 通常在汇聚层一般配置适当的队列机制(如CBQ)和拥塞避免机制(如WRED)。
Answer: BD