单选题Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）A Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.B

题目
单选题
Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）
A

Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.

B

It must send an IGMPv2 Request to Send  packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet

C

It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.

D

It may transmit multicast traffic to the group at any time. 

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更多“Which statement is true of a source that wants to transmit m”相关问题

  • 第1题：

    The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?

    A.Fusible links must be replaced if a damper is activated

    B.Fusible links are tested by applying a source of heat to them

    C.Fusible links must be replaced at every inspection for certification

    D.A fusible link will automatically open after a fire is extinguished and reset the damper


    正确答案：A

  • 第2题：

    Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）

    • A、Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.
    • B、It must send an IGMPv2 Request to Send  packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet
    • C、It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.
    • D、It may transmit multicast traffic to the group at any time. 

    正确答案:D

  • 第3题：

    Which statement is true for a customer that wants to deploy compression for a circuit rated at 155 Mbps?（）

    • A、A WX60 cluster can handle 155 Mbps.
    • B、WX devices can handle only up to 45 Mbps.
    • C、Only a WXC500 or WXC590 can handle this requirement.
    • D、A WXC or WX stack configuration deployment is required.

    正确答案:D

  • 第4题：

    Which statement is true about IBGP routers? （）

    • A、They must be fully meshed
    • B、They can be in a different AS
    • C、They must be directly connected

    正确答案:C

  • 第5题：

    Which statement about multicast VPN is true？（）

    • A、The MDT group address should be the same for both address families in the same VRF
    • B、The MDT group address should be the same for both address families in the different VRFs
    • C、Configuration of the MDT source on a pre-VRF basis is supported only on IPv6
    • D、The MDT group address should be different for both address families in the same VRF

    正确答案:A

  • 第6题：

    Which of the following performance tools will work with optimized code and also provides source statement profiling？（）

    • A、 prof
    • B、 gprof
    • C、 kprof
    • D、 tprof

    正确答案:D

  • 第7题：

    Which statement is true about source NAT？（）

    • A、Source NAT works only with source pools.
    • B、Destination NAT is required to translate the reply traffic.
    • C、Source NAT does not require a security policy to function.
    • D、The egress interface IP address can be used for source NAT

    正确答案:D

  • 第8题：

    Which statement is TRUE about the CacheFactory class ？（）

    • A、 it is a topology agnostic way to access NamedCaches
    • B、 it provides mechanisms to manage underlying remote data sources
    • C、 both A and B are TRUE
    • D、Neither A nor B are TRUE

    正确答案:A

  • 第9题：

    单选题
    Which statement is TRUE about the CacheFactory class ？（）
    A

     it is a topology agnostic way to access NamedCaches

    B

     it provides mechanisms to manage underlying remote data sources

    C

     both A and B are TRUE

    D

    Neither A nor B are TRUE


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which statement about PIM sparse mode operations is true？（）
    A

    It does not support all underlying unicast routing protocols like BGP

    B

    Receivers are registered with RP by their first hop router

    C

    From the RP， traffic flows down a source tree to each receiver.

    D

    It supports shared trees only， and assumes all hosts want the multicast traffic

    E

    Receivers are joined to the shared tree by their local designated router


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Which of the following performance tools will work with optimized code and also provides source statement profiling？（）
    A

     prof

    B

     gprof

    C

     kprof

    D

     tprof


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）
    A

    Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.

    B

    It must send an IGMPv2 Request to Send  packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet

    C

    It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.

    D

    It may transmit multicast traffic to the group at any time. 


    正确答案： D
    解析： 暂无解析

  • 第13题：

    Which statement concerning satellite EPIRBs is TRUE ________．

    A.Once activated，these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon

    B.The coded signal identifies the nature of the distress situation

    C.The coded signal only identifies the vessel's name and port of registry

    D.If the GMDSS Radio Operator does not program the EPIRB，it will transmit default information such as the follow-on communications frequency and mode


    正确答案：A

  • 第14题：

    The Prescott Shovel Company wants to upgrade its Cisco Unity Express from a Cisco Unified CallManager Express integration to a Cisco Unified CallManager integration. Which statement is true?（）

    • A、A special hybrid license is required. 
    • B、The Cisco Unity Express license must be changed. 
    • C、The Cisco Unity Express license does not need to be changed. 
    • D、The license file names are identical, which allows them to be interchanged as long as the module itself is not being upgraded.

    正确答案:B

  • 第15题：

    Which statement is true about interface-based source NAT？（）

    • A、PAT is a requirement.
    • B、It requires you to configure address entries in the junos-nat zone.
    • C、It requires you to configure address entries in the junos-global zone.
    • D、The IP addresses being translated must be in the same subnet as the egress interface.

    正确答案:A

  • 第16题：

    Which statement about PIM sparse mode operations is true？（）

    • A、It does not support all underlying unicast routing protocols like BGP
    • B、Receivers are registered with RP by their first hop router
    • C、From the RP， traffic flows down a source tree to each receiver.
    • D、It supports shared trees only， and assumes all hosts want the multicast traffic
    • E、Receivers are joined to the shared tree by their local designated router

    正确答案:E

  • 第17题：

    What statement about Transit AS is true？（）

    • A、Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination AS
    • B、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS
    • C、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS
    • D、None of the above

    正确答案:A

  • 第18题：

    public class Test{  public static void main（ String[] argv ）{  // insert statement here  }  }   Which statement， inserted at line 3， produces the following output？（）  Exception in thread “main” java.lang.AssertionError： true at Test.main（Test.java：3）  

    • A、 assert true；
    • B、 assert false；
    • C、 assert false ： true；
    • D、 assert false == true；
    • E、 assert false： false；

    正确答案:C

  • 第19题：

    Which two statements are true about terms in a routing policy?（）

    • A、A then statement is mandatory in a term
    • B、If a term does not contain a from statement, all routers match
    • C、If a term does not contain a from statement, the Junos OS will not commit
    • D、A then statement is not mandatory in a term

    正确答案:A,B

  • 第20题：

    单选题
    Which statement is true about source NAT？（）
    A

    Source NAT works only with source pools.

    B

    Destination NAT is required to translate the reply traffic.

    C

    Source NAT does not require a security policy to function.

    D

    The egress interface IP address can be used for source NAT


    正确答案： A
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements are true about terms in a routing policy?（）
    A

    A then statement is mandatory in a term

    B

    If a term does not contain a from statement, all routers match

    C

    If a term does not contain a from statement, the Junos OS will not commit

    D

    A then statement is not mandatory in a term


    正确答案： C,B
    解析： 暂无解析

  • 第22题：

    单选题
    public class Test{  public static void main（ String[] argv ）{  // insert statement here  }  }   Which statement， inserted at line 3， produces the following output？（）  Exception in thread “main” java.lang.AssertionError： true at Test.main（Test.java：3）
    A

     assert true；

    B

     assert false；

    C

     assert false ： true；

    D

     assert false == true；

    E

     assert false： false；


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Which statement is true for a customer that wants to deploy compression for a circuit rated at 155 Mbps?（）
    A

    A WX60 cluster can handle 155 Mbps.

    B

    WX devices can handle only up to 45 Mbps.

    C

    Only a WXC500 or WXC590 can handle this requirement.

    D

    A WXC or WX stack configuration deployment is required.


    正确答案： A
    解析： 暂无解析

  • 第24题：

    单选题
    Which equipment is not a source of locating signals?（）
    A

    EPIRB's that transmit on 406 MHz

    B

    Survival craft VHF transceivers that provide a beacon on 121.5 MHz

    C

    COSPAS-SARSAT EPIRBs

    D

    SARTs operating on 9 GHz


    正确答案： A
    解析： 暂无解析

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