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
相似考题

1.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

2.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

3.在组播网络中RPF代表什么?()。A.Reverse protocol forwardingB.Reverse protocol floodingC.Reverse path forwardingD.Reverse path flooding

4.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

更多“Unicast Reverse Path”相关问题

  • 第1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2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3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4题：

    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 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

  • 第5题：

    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 received
    • B、check to see if any packet received at a router interface arrives on the best return path
    • C、combine with a configured ACL
    • D、log its events，if you specify the logging options for the ACL entries used by the unicast rpf command
    • E、inspect IP packets encapsulated in tunnels， such as GRE

    正确答案:E

  • 第6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

    正确答案:A

  • 第7题：

    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 keyACL

    D

     RFC 1918filtering

    E

     IP source routing


    正确答案： D
    解析： 暂无解析

  • 第8题：

    多选题
    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


    正确答案： A,D
    解析： 暂无解析

  • 第9题：

    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？（）
    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： D
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following IOS features can prevent IP spoofing attacks？（）
    A

    PPP over Ethernet

    B

    Cisco Express forwarding

    C

    MPLS traffic Engineering

    D

    IS-IS routing

    E

    Unicast Reverse Path Forwarding（uRPF）


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    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： E
    解析： 暂无解析

  • 第12题：

    多选题
    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： C,A
    解析： 暂无解析

  • 第13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14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15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

  • 第16题：

    Which of the following IOS features can prevent IP spoofing attacks？（）

    • A、PPP over Ethernet
    • B、Cisco Express forwarding
    • C、MPLS traffic Engineering
    • D、IS-IS routing
    • E、Unicast Reverse Path Forwarding（uRPF）

    正确答案:E

  • 第17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

    正确答案:C

  • 第18题：

    What is one of the uses of MBGP routes?（）

    • A、DVMRP hold-time period
    • B、Rendezvous point election
    • C、reverse path forwarding checks
    • D、interdomain multicast next hops

    正确答案:C

  • 第19题：

    单选题
    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： B
    解析： 暂无解析

  • 第20题：

    单选题
    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： C
    解析： 暂无解析

  • 第21题：

    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-validate

    B

    ip split-horizon

    C

    ip access-routes

    D

    ip filter-options


    正确答案： A
    解析： 暂无解析

  • 第22题：

    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？（）
    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： D
    解析： 暂无解析

  • 第23题：

    问答题
    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.
    解析： 暂无解析

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