JN0-130
单选题Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）A ip sa-validateB ip split-horizonC ip access-routesD ip filter-options
题目
ip sa-validate
ip split-horizon
ip access-routes
ip filter-options
参考答案和解析
相似问题和答案
第1题：
A. The router will rebroadcast any DHCP requests received by this interface out to all interfaces included in the ip helper - address commands.
B. The router will rebroadcast any UDP broadcasts received by this interface out to all interfaces included in the ip helper - address commands.
C. The router will unicast any DHCP requests received by this interface out to all addresses included in the ip helper - address commands.
D. This configuration will not do anything because the ip helper - address command needs to also be applied to the 192.168.23.1 IP address.
第2题：
A. defines the source IP address that i s used in all broadcast packets on DLCI 202
B. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address
C. defines the destination IP address that is used in all broadcast packets on DLCI 202
D. defines the DLCI on which packets from the 192.168.1.2 IP address are received
第3题：
A. ip sa-validate
B. ip split-horizon
C. ip access-routes
D. ip filter-options
第4题：
Which of these statements accurately identifies how Unicast Reverse Path Forwarding can be employed to prevent the use of malformed or forged IP sources addresses？（）
- A、It is applied only on the input interface of a router.
- B、It is applied only on the output interface of a router.
- C、It can be configured either on the input or output interface of a router.
- D、It cannot be configured on a router interface.
- E、It is configured under any routing protocol process.
正确答案:A
第5题：
Which two statements are true about Unicast Reverse Path Forwarding Loose Mode？（）
- A、It is used in multihome network scenarios.
- B、It can be used with BGP to mitigate DoS and DDoS.
- C、It does not need to have CEF enabled.
- D、It is enabled via the interface level command ip verify unicast reverse-path.
- E、It cannot be used with "classification" access lists.
正确答案:A,B
第6题：
A. The router sent an IGMP version 2 query out interface Ethernet1 at multicast address 224.0.0.1.
B. Router RTA received an IGMP report version 1 from host 192.168.9.1.
C. Reverse Path Forwarding (RPF) is ena bled for 192.168.9.4.
D. Reverse Path Forwarding (RPF) is enabled for 224.0.1.40.
E. The IP multicast groups are 224.0.0.1, 224.0.1.40, and 239.255.0.1.
F. IP PIM RP mapping is static.
第7题：
A.This command should be executed from the global configuration mode
B.The IP address 10.121.16.8 is the local router port used to forward data
C.102 is the remote DLCI that will receive the information
D.This command is required for all Frame Relay configurations
E.The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC
第8题：
A.neighbor
B.unicast-neighbor
C.triggered-update
D.passive-interface
第9题：
If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）
- A、A received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.
- B、An IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table.
- C、There is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table.
- D、A received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet.
- E、A received labeled IP packet is forwarded based upon both the label and the IP address.
- F、A received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.
正确答案:A,D,F
第10题：
For a router connected to two ISPs for redundancy， using IPSLA and static routing， how would youconfigure uRPF on the uplink interface？（）
- A、ip verify unicast source reachable-via any
- B、ip verify unicast reverse-path
- C、ip verify unicast reverse-path loose
- D、ip verify unicast reverse-path strict
正确答案:A