96.Based on the network provided in the exhibit, in these two areas, all routers are performing OSPF on all interfaces. After examining the OSPF database on PG-R4, do you know which type of LSA will contain 10.1.5.0/24, and which router will have originated it? 基于给出的网络，在两个区域里，全部的路由器全部的接口都运行OSPF，在检查 PG-R4的OSPF数据库后，你知道哪个类型的LSA包含了10.1.5.0/24，哪个路由器 有它的源?
A. 10.1.5.0/24 will be in a summary (type 3) LSA originated by PG-R3.
B. 10.1.5.0/24 will be in a router (type 1) LSA generated by PG-R3.
C. 10.1.5.0/24 will be in a network (type 2) LSA originated by PG-R3.
D. 10.1.5.0/24 will not be in any LSA in the OSPF database at PG-R4, because PG-R4 and PGR3 are in different areas.
Answer: A
97. Which statement correctly describes the disabling of IP TTL propagation in an MPLS network?
哪种说法正确地描述了MPLS网络中IP传输的TTL是禁用的
A. The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSR.
B. TTL propagation cannot be disabled in an MPLS domain.
C. TTL propagation is only disabled on the ingress edge LSR.
D. The TTL field of the MPLS label header is set to 255.
TTL失效是因为 MPLS的标签头的TTL字段设置为255
E. The TTL field of the IP packet is set to 0.
Answer: D www.Examw.com
98. Which three of these statements about penultimate hop popping are true? (Choose three.) 下面哪三句话描述的倒数第二跳的内容是对的
A. It is used only for directly connected subnets or aggregate routes.
仅用于直连网络和聚合路由
B. It can only be used with LDP.
C. It is only used when two or more labels are stacked.
D. It enables the Edge LSR to request a label pop operation from its upstream neighbors.
E. It is requested through TDP using a special label value that is also called the implicit-null value.
F. It is requested through LDP using a special label value that is also called the implicit-null value.
Answer: ADF
99. Which of these tables is used by an LSR to perform a forwarding lookup for a packet destined to an address within an RFC 4364 VPN?
哪个表格使用一个LSR去查找一个数据包的目的地址在RFC4364的VPN中
A. CEF
B. FIB
C. LFIB
D. IGP
Answer: C
100. A network is composed of several VRFs. It is required that VRF users VRF_A and VRF_B be able to route to and from VRF_C, which hosts shared services. However, traffic must not be allowed to flow between VRF_A and VRF_B. How can this be accomplished?
标签转发表
一个网络有一个组合成的虚拟路由转发表， 这个表必须让用户VRF_A和B 能有到C并且返回 的路由。他提供主机的共享服务，但是同时不能让A和B之间相互通信，怎么能做到这个
A. route redistribution
B. import and export using route descriptors
C. import and export using route targets
D. Cisco MPLS Traffic Engineering
Answer: C
