Unicast Reverse Path Forwarding （Urpf ） can work in the following modes：（）A、Express modeB、Strict modeC、Loose modeD、Tunnel modeE、Safe mode

题目

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

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相似问题和答案

第1题：

What is the purpose of unicast reverse path forwarding?()

A. to validate packet receipt on interfaces where the traffic should be received

B. to forward packets out the interfaces where the traffic should be received

C. to forward packets out the interfaces where the traffic should be sent

D. to validate packet receipt on interfaces where the traffic should be sent

参考答案：A

第2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3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-validate

B. ip split-horizon

C. ip access-routes

D. ip filter-options

参考答案：A

第4题：

How is an RSVP resv message sent back to the ingress router?（）

A、reverse path of the RRO
B、least cost to the ingress router
C、shortest path to the egress router
D、reverse path of the path vector TLV

正确答案:A

第5题：

what is RPF（ Reverse Path Forwarding ）？

正确答案:Forwarding multicast traffic away from the source， rather than to the receiver， is called Reverse Path Forwarding （RPF）. This RPF check helps to guarantee that the distribution tree will be loop-free.

第6题：

在组播网络中RPF代表什么?()。

A.Reverse protocol forwarding

B.Reverse protocol flooding

C.Reverse path forwarding

D.Reverse path flooding

参考答案：C

第7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8题：

How is an RSVP resv message sent back to the ingress router?()

A. reverse path of the RRO

B. least cost to the ingress router

C. shortest path to the egress router

D. reverse path of the path vector TLV

参考答案：A

第9题：

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.

正确答案:C

第10题：

What Cisco technology protects against Spanning-Tree Protocol manipulation？（）

A、 Spanning tree protect
B、 Root Guard and BPDU Guard
C、 Unicast Reverse Path Forwarding
D、 MAC spoof guard
E、 Port Security

正确答案:B

Unicast Reverse Path

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