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多选题
Which three IP multicast group concepts are true?（）
A
If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.
B
A router does not have to be a member of a multicast group to receive multicast data.
C
A router must be a member of a multicast group to send to the group.
D
A router does not have to be a member of a multicast group to send to the group.
E
If a packet is sent to a multicast group address, all members of the multicast group will rece ive it.
F
A router must be a member of a multicast group to receive multicast data.
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更多 “多选题Which three IP multicast group concepts are true?（）AIf a packet is sent to a multicast group address, the multicast frame contains the source multicast address.BA router does not have to be a member of a multicast group to receive multicast data.CA router must be a member of a multicast group to send to the group.DA router does not have to be a member of a multicast group to send to the group.EIf a packet is sent to a multicast group address, all members of the multicast group will rece ive it.FA router must be a member of a multicast group to receive multicast data.” 相关考题
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Which three IP addresses are valid multicast addresses?()
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Which two statements are true about Internet Group Management Protocol (IGMP) snooping?()
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Which three statements are true about the Internet Group Management Protocol (IGMP)? ()
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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 subnetC、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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Which three IP multicast group concepts are true?（）A、If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.B、A router does not have to be a member of a multicast group to receive multicast data.C、A router must be a member of a multicast group to send to the group.D、A router does not have to be a member of a multicast group to send to the group.E、If a packet is sent to a multicast group address, all members of the multicast group will rece ive it.F、A router must be a member of a multicast group to receive multicast data.
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Which three IP addresses are valid multicast addresses?（）A、169.254.23.59B、223.254.255.254C、225.1.1.1D、227.43.34.2E、238.3.3.3F、249.1.2.3
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Which three IP multicast group concepts are true?（）A、If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.B、A router does not have to be a member of a multicast group to recei ve multicast data.C、A router must be a member of a multicast group to send to the group.D、A router does not have to be a member of a multicast group to send to the group.E、If a packet is sent to a multicast group address, all members of the multic ast group will receive it.F、A router must be a member of a multicast group to receive multicast data.
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Which three IP multicast group concepts are true？ （Choose three.） （）A、 If a packet is sent to a multicast group address， all members of the multicast group will receive itB、 If a packet is sent to a multicast group address， the multicast frame contains the source multicast addressC、 A router does not have to be a member of a multicast group to receive multicast data.D、 A router does not have to be a member of a multicast group to send to the group.E、 A router must be a member of a multicast group to receive multicast data.F、 A router must be a member of a multicast group to send to the group.
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多选题Which three IP multicast related statements are true？ （Choose three.） （）AMulticast 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 InternetBThe multicast address 224.0.0.1 is a globally scoped address that has been reserved for the Network Time Protocol （NTP） by the IANACMulticast addresses 239.0.0.0 through 239.255.255.255 are called limited scope addresses. They are constrained to a local group or organizationDMulticast addresses 224.0.0.5 and 224.0.0.6 are limited scoped addresses that have been reserved for OSPFEMulticast 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
考题
多选题Which three statements are true about the Internet Group Management Protocol (IGMP)? （）AThere are three IGMP modes: dense mode, sparse mode, and sparse - dense modeBIGMP is used to register individual hosts with a multicast groupCIGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic fromDIGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1EIGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRPFIGMP snooping ru ns on Layer 3 routers
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多选题Which three statements about anycast RP are true？ （）AMSDP is running between anycast RPsBAnycast RP provides redundancy and load-sharing capabilitiesCMulticast BGP is running between anycast RPsDIn anycast RP，two or more RPs are configured with the same multicast IP address on loopback interfacesEIn anycast RP，two or more RPs are configured with the same unicast IP address on loopback interfaces
考题
多选题Which three IP multicast group concepts are true?（）AIf a packet is sent to a multicast group address, the multicast frame contains the source multicast address.BA router does not have to be a member of a multicast group to recei ve multicast data.CA router must be a member of a multicast group to send to the group.DA router does not have to be a member of a multicast group to send to the group.EIf a packet is sent to a multicast group address, all members of the multic ast group will receive it.FA router must be a member of a multicast group to receive multicast data.
考题
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 subnetC
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.
考题
单选题When building an IP multicast domain using PIM which mode assumes that other routers do not want to forward multicast packets for the group?（）A
PIM - DMB
PIM - SMC
PIM - RPD
CGMPE
IGMP snooping
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