Unicast Reverse Path Forwarding （Urpf ） can work in the following modes：（）A、Express modeB、Strict modeC、Loose modeD、Tunnel modeE、Safe mode
Unicast Reverse Path Forwarding （Urpf ） can work in the following modes：（）
- A、Express mode
- B、Strict mode
- C、Loose mode
- D、Tunnel mode
- E、Safe mode
相关考题：
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
How is an RSVP resv message sent back to the ingress router?() A. reverse path of the RROB. least cost to the ingress routerC. shortest path to the egress routerD. reverse path of the path vector TLV
What is the purpose of unicast reverse path forwarding?() A. to validate packet receipt on interfaces where the traffic should be receivedB. to forward packets out the interfaces where the traffic should be receivedC. to forward packets out the interfaces where the traffic should be sentD. to validate packet receipt on interfaces where the traffic should be sent
在组播网络中RPF代表什么?()。 A.Reverse protocol forwardingB.Reverse protocol floodingC.Reverse path forwardingD.Reverse path flooding
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.
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.
What is true about Unicast RPF in strict mode？（）A、It works well with a multihomed environment.B、It will inspect IP packets that are encapsulated in tunnels， such as GRE，LT2P，or PPTP.C、uRPF is performed within the CEF switching path.D、There might be a problem with DHCP as Unicast RPF is blocking packets with a 0.0.0.0 sourceaddress.
How is an RSVP resv message sent back to the ingress router?（）A、reverse path of the RROB、least cost to the ingress routerC、shortest path to the egress routerD、reverse path of the path vector TLV
What Cisco technology protects against Spanning-Tree Protocol manipulation？（）A、 Spanning tree protectB、 Root Guard and BPDU GuardC、 Unicast Reverse Path ForwardingD、 MAC spoof guardE、 Port Security
For a router connected to two ISPs for redundancy， using IPSLA and static routing， how would you configure uRPF on the uplink interface？（）A、ip verify unicast source reachable-via anyB、ip verify unicast reverse-pathC、ip verify unicast reverse-path looseD、ip verify unicast reverse-path strict
Which of the following IOS features can prevent IP spoofing attacks？（）A、PPP over EthernetB、Cisco Express forwardingC、MPLS traffic EngineeringD、IS-IS routingE、Unicast Reverse Path Forwarding（uRPF）
Unicast Reverse Path Forwarding can perform all of these actions except which one？（）A、examine all packets received to make sure that the source addresses and source interfaces appear in the routing table and match the interfaces where the packets were receivedB、check to see if any packet received at a router interface arrives on the best return pathC、combine with a configured ACLD、log its events，if you specify the logging options for the ACL entries used by the unicast rpf commandE、inspect IP packets encapsulated in tunnels， such as GRE
在组播网络中RPF代表什么？（）。A、Reverse protocol forwardingB、Reverse protocol floodingC、Reverse path forwardingD、Reverse path flooding
What is the purpose of unicast reverse path forwarding?（）A、to validate packet receipt on interfaces where the traffic should be receivedB、to forward packets out the interfaces where the traffic should be receivedC、to forward packets out the interfaces where the traffic should be sentD、to validate packet receipt on interfaces where the traffic should be sent
What is one of the uses of MBGP routes?（）A、DVMRP hold-time periodB、Rendezvous point electionC、reverse path forwarding checksD、interdomain multicast next hops
单选题Which of the following is the most effective technique to prevent source IPAddress spoofing？（）A policy based routing （PBR）B unicast reverse path forwarding （uRPF）C lock and keyACLD RFC 1918filteringE IP source routing
单选题What is true about Unicast RPF in strict mode？（）AIt works well with a multihomed environment.BIt will inspect IP packets that are encapsulated in tunnels， such as GRE，LT2P，or PPTP.CuRPF is performed within the CEF switching path.DThere might be a problem with DHCP as Unicast RPF is blocking packets with a 0.0.0.0 sourceaddress.
多选题Unicast Reverse Path Forwarding （Urpf ） can work in the following modes：（）AExpress modeBStrict modeCLoose modeDTunnel modeESafe mode
单选题How is an RSVP resv message sent back to the ingress router？（）A reverse path of the RROB least cost to the ingress routerC shortest path to the egress routerD reverse path of the path vector TLV
单选题For a router connected to two ISPs for redundancy， using IPSLA and static routing， how would youconfigure uRPF on the uplink interface？（）Aip verify unicast source reachable-via anyBip verify unicast reverse-pathCip verify unicast reverse-path looseDip verify unicast reverse-path strict
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?（）Aip sa-validateBip split-horizonCip access-routesDip filter-options
单选题Which of the following IOS features can prevent IP spoofing attacks？（）APPP over EthernetBCisco Express forwardingCMPLS traffic EngineeringDIS-IS routingEUnicast Reverse Path Forwarding（uRPF）
单选题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？（）AIt is applied only on the input interface of a router.BIt is applied only on the output interface of a router.CIt can be configured either on the input or output interface of a router.DIt cannot be configured on a router interface.EIt is configured under any routing protocol process.
单选题What Cisco technology protects against Spanning-Tree Protocol manipulation？（）A Spanning tree protectB Root Guard and BPDU GuardC Unicast Reverse Path ForwardingD MAC spoof guardE Port Security
多选题Which two statements are true about Unicast Reverse Path Forwarding Loose Mode？（）AIt is used in multihome network scenarios.BIt can be used with BGP to mitigate DoS and DDoS.CIt does not need to have CEF enabled.DIt is enabled via the interface level command ip verify unicast reverse-path.EIt cannot be used with classification access lists.