多选题Which two multicast protocol statements are true？ （Choose two.）  （）ADense mode multicast requires explicit join messages from their members.BDense mode multicast uses a push model to flood traffic throughout the network and then prunes the  unwanted tr

题目
多选题
Which two multicast protocol statements are true？ （Choose two.）  （）
A

Dense mode multicast requires explicit join messages from their members.

B

Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the  unwanted traffic.

C

Sparse mode multicast uses a pull model to send multicast traffic to where it is requested.

D

Sparse mode uses reverse path forwarding （RPF） to prune off redundant flows.

E

The primary use of sparse mode multicast is for test labs and router performance testing.

相似考题

1.Which two statements are true about AH?() (Choose two.)A. AH provides data integrity.B. AH is identified by IP protocol 50.C. AH is identified by IP protocol 51.D. AH cannot work in conjunction with ESP

2.Which two statements are true about precedence values in policy?() (Choose two.)A. 1 is the default precedence.B. A lower number is preferred.C. A higher number is preferred.D. 100 is the default precedence.

3.Which two statements are true regarding L2TP? ()(Choose two.)A. Tunnels are initiated by the LACB. Tunnels are initiated by the LNSC. By default, subscriber authentication occurs on the LNSD. By default, subscriber authentication occurs on the LAC

4.Which two statements are true with regard to policy ordering? ()(Choose two.)A. The last policy is the default policy, which allows all traffic.B. The order of policies is not important.C. New policies are placed at the end of the policy list.D. The insert command can be used to change the order.

更多“Which two multicast protocol statements are true？ （Choose tw”相关问题

  • 第1题：

    Which two multicast protocol statements are true?()

    A. Sparse mode multicast uses a pull model to send multicast traffic to where it is requested

    B. Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic

    C. Dense mode multicast requires explicit join messa ges from their members

    D. Sparse mode uses reverse path forwarding (RPF) to prune off redundant flows

    E. The primary use of sparse mode multicast is for test labs and router performance testing


    参考答案：A, B

  • 第2题：

    Which two statements are true about Internet Group Management Protocol (IGMP) snooping?()

    A. IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.

    B. IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.

    C. IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.

    D. IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.

    E. IGMP snooping is enabled with the ip multicast - routing global configuration command.


    参考答案：C, D

  • 第3题：

    Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）

    • A、The multicast sources must register with the RP to form the multicast distribution tree.
    • B、An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
    • C、The multicast receivers must register with the RP to form the multicast distribution tree.
    • D、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
    • E、An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).
    • F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.

    正确答案:D,F

  • 第4题：

    Which two statements are tru e about the rendezvous point (RP) in a multicast network?（）

    • A、The multicast sources must register with the RP to form the multicast distribution tree
    • B、An RP is required only in networks running Protocol Independent Multicast dense mode ( PIM DM)
    • C、The multicast receivers must register with the RP to form the multicast distribution tree
    • D、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM)
    • E、An RP is required only in networks running Pro tocol Independent Multicast sparse - dense mode (PIM - SDM)
    • F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP

    正确答案:D,F

  • 第5题：

    Which two statements about RPF checks in Multicast Source Discovery Protocol （MSDP） are true？（）

    • A、It prevents message looping， Session Advertisement （SA）messages must be RPF checked
    • B、RPF check should be done against the route to the source S of the corresponding PIM-SM domain
    • C、RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SA
    • D、RPF checking Session Advertisement （SA） messages will cause message looping

    正确答案:A,C

  • 第6题：

    Which two statements are true about Internet Group Management Protocol (IGMP) snooping?（）

    • A、IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.
    • B、IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.
    • C、IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.
    • D、IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.
    • E、IGMP snooping is enabled with the ip multicast - routing global configuration command.

    正确答案:C,D

  • 第7题：

    Which two statements are true about the rendezvo us point (RP) in a multicast network?（）

    • A、The multicast sources must register with the RP to form the multicast distribution tree.
    • B、An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
    • C、The mu lticast receivers must register with the RP to form the multicast distribution tree.
    • D、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
    • E、An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).
    • F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.

    正确答案:D,F

  • 第8题：

    多选题
    Which two statements are true about precedence values in policy?（） (Choose two.)
    A

    1 is the default precedence.

    B

    A lower number is preferred.

    C

    A higher number is preferred.

    D

    100 is the default precedence.


    正确答案： C,B
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements are true about L2TP tunnels?（） (Choose two.)
    A

    Traffic is clear text

    B

    Traffic is encrypted 

    C

    They are initiated by the LNS

    D

    They are initiated by the LAC


    正确答案： B,D
    解析： 暂无解析

  • 第10题：

    多选题
    Which two statements are true about AH?（） (Choose two.)
    A

    AH provides data integrity.

    B

    AH is identified by IP protocol 50.

    C

    AH is identified by IP protocol 51.

    D

    AH cannot work in conjunction with ESP


    正确答案： D,C
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true about the rendezvo us point (RP) in a multicast network?（）
    A

    The multicast sources must register with the RP to form the multicast distribution tree.

    B

    An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).

    C

    The mu lticast receivers must register with the RP to form the multicast distribution tree.

    D

    An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).

    E

    An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).

    F

    To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.


    正确答案： D,A
    解析： 暂无解析

  • 第12题：

    多选题
    Which two multicast protocol statements are true?（）
    A

    Sparse mode multicast uses a pull model to send multicast traffic to where it is requested

    B

    Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic

    C

    Dense mode multicast requires explicit join messa ges from their members

    D

    Sparse mode uses reverse path forwarding (RPF) to prune off redundant flows

    E

    The primary use of sparse mode multicast is for test labs and router performance testing


    正确答案： C,E
    解析： 暂无解析

  • 第13题：

    Which two statements are tru e about the rendezvous point (RP) in a multicast network?()

    A. The multicast sources must register with the RP to form the multicast distribution tree

    B. An RP is required only in networks running Protocol Independent Multicast dense mode ( PIM DM)

    C. The multicast receivers must register with the RP to form the multicast distribution tree

    D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM)

    E. An RP is required only in networks running Pro tocol Independent Multicast sparse - dense mode (PIM - SDM)

    F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP


    参考答案：D, F

  • 第14题：

    Which three statements are true about the Internet Group Management Protocol (IGMP)? ()

    A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode

    B. IGMP is used to register individual hosts with a multicast group

    C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from

    D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1

    E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP

    F. IGMP snooping ru ns on Layer 3 routers


    参考答案：B, C, D

  • 第15题：

    Which three IP multicast address related statements are true？ （Choose three.） （） 

    • A、Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted  with Time to Live （TTL） greater than 1.
    • B、Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers.
    • C、Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link-local addresses used by PIMv2 and  IGMPv3.
    • D、Because they would map to overlapping IP multicast MAC addresses， multicast addresses 224.0.1.1  and 238.1.1.1 could not be used together.
    • E、Multicast address 224.0.1.1 has been reserved for the Network Time Protocol （NTP） by the IANA
    • F、The administratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in  purpose to RFC 1918 private unicast addresses.

    正确答案:C,E,F

  • 第16题：

    Which two statements are true about L2TP tunnels?（） (Choose two.)

    • A、Traffic is clear text
    • B、Traffic is encrypted 
    • C、They are initiated by the LNS
    • D、They are initiated by the LAC

    正确答案:A,D

  • 第17题：

    Which three statements about anycast RP are true？ （）

    • A、MSDP is running between anycast RPs
    • B、Anycast RP provides redundancy and load-sharing capabilities
    • C、Multicast BGP is running between anycast RPs
    • D、In anycast RP，two or more RPs are configured with the same multicast IP address on loopback interfaces
    • E、In anycast RP，two or more RPs are configured with the same unicast IP address on loopback interfaces

    正确答案:A,B,E

  • 第18题：

    Which three IP multicast related statements are true？ （Choose three.）  （）

    • A、 Multicast addresses 224.0.1.0 through 238.255.255.255 are called globally scoped addresses. They are used to multicast data between organizations and across the Internet
    • B、 The multicast address 224.0.0.1 is a globally scoped address that has been reserved for the Network  Time Protocol （NTP） by the IANA
    • C、 Multicast addresses 239.0.0.0 through 239.255.255.255 are called limited scope addresses. They are  constrained to a local group or organization
    • D、 Multicast addresses 224.0.0.5 and 224.0.0.6 are limited scoped addresses that have been reserved for  OSPF
    • E、 Multicast addresses 224.0.0.0 through 224.0.0.255 are used for network protocols on local LAN segments. Because they are always transmitted with a Time to Live （TTL） of 1， they are never forwarded  by a router

    正确答案:A,C,E

  • 第19题：

    Which two statements are true regarding L2TP? （）(Choose two.)

    • A、Tunnels are initiated by the LAC
    • B、Tunnels are initiated by the LNS
    • C、By default, subscriber authentication occurs on the LNS
    • D、By default, subscriber authentication occurs on the LAC

    正确答案:A,C

  • 第20题：

    多选题
    Which two statements are true with regard to policy ordering? （）(Choose two.)
    A

    The last policy is the default policy, which allows all traffic.

    B

    The order of policies is not important.

    C

    New policies are placed at the end of the policy list.

    D

    The insert command can be used to change the order.


    正确答案： B,D
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）
    A

    The multicast sources must register with the RP to form the multicast distribution tree.

    B

    An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).

    C

    The multicast receivers must register with the RP to form the multicast distribution tree.

    D

    An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).

    E

    An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).

    F

    To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.


    正确答案： C,A
    解析： 暂无解析

  • 第22题：

    多选题
    Which two statements are true regarding L2TP? （）(Choose two.)
    A

    Tunnels are initiated by the LAC

    B

    Tunnels are initiated by the LNS

    C

    By default, subscriber authentication occurs on the LNS

    D

    By default, subscriber authentication occurs on the LAC


    正确答案： C,D
    解析： 暂无解析

  • 第23题：

    多选题
    Which three statements are true about the Internet Group Management Protocol (IGMP)? （）
    A

    There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode

    B

    IGMP is used to register individual hosts with a multicast group

    C

    IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from

    D

    IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1

    E

    IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP

    F

    IGMP snooping ru ns on Layer 3 routers


    正确答案： B,F
    解析： 暂无解析

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