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单选题
Which multicast address is reserved for cisco-rp-discovery？（）
A
224.0.1.37
B
224.0.1.38
C
224.0.1.39
D
224.0.1.40
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Which two multicast address ranges are assigned as source-specific multicast destination addresses and are reserved for use by source-specific applications and protocols？（）A、232.0.0.0/8B、239.0.0.0/8C、232.0.0.0/4D、FF3x：：/32E、FF2x：：/32F、FF3x：：/16
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Which of the following correctly fills in the missing words of this sentence： An ARP request uses aaddress， whereas an ARP reply uses a address.（）A、broadcast， multicastB、unicast， broadcastC、broadcast， unicastD、multicast， unicastE、broadcast， broadcastF、unicast， multicast
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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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In computer networking a multicast address is an identifier for a group of hosts that have joined amulticast group. Multicast addressing can be used in the Link Layer （OSI Layer 2）， such as Ethernet Multicast， as well as at the Internet Layer （OSI Layer 3） as IPv4 or IPv6 Multicast. Whichtwo descriptions are correct regarding multicast addressing？（）A、The first 23 bits of the multicast MAC address are 0x01-00-5E. This is a reserved value thatindicates a multicast applicationB、The last 3 bytes （24 bits） of the multicast MAC address are 0x01-00-5E. This is a reservedvalue that indicates a multicast applicationC、To calculate the Layer 2 multicast address， the host maps the last 23 bits of the IP address intothe last 24 bits of the MAC address. The high-order bit is set to 0D、The first 3 bytes （24 bits） of the multicast MAC address are 0x01-00-5E. This is a reservedvalue that indicates a multicast application
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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 IANAF、The administratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses.
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Which three attributes are carried in a source active message?（）A、NLRI informationB、IP address of originating RPC、address of multicast sourceD、all active RPs in the local domainE、group address to which the source is sending
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Which multicast address is reserved for cisco-rp-discovery？（）A、224.0.1.37B、224.0.1.38C、224.0.1.39D、224.0.1.40
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Which two are characteristics of an IPv6 multicast address？（）A、First （most significant ） octet is FF in hexB、Starts with a prefix of FE80 to FEBF in hexC、Starts with a prefix of FECO to FEFF in hexD、Second octet contains a 4-bit multicast scope fieldE、Last 64 bit contains the modified MAC address of the Ethernet interfaceF、Is allocated from the unicast address space
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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.
考题
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 InternetB、 The multicast address 224.0.0.1 is a globally scoped address that has been reserved for the Network Time Protocol （NTP） by the IANAC、 Multicast addresses 239.0.0.0 through 239.255.255.255 are called limited scope addresses. They are constrained to a local group or organizationD、 Multicast addresses 224.0.0.5 and 224.0.0.6 are limited scoped addresses that have been reserved for OSPFE、 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
考题
During the IPv6 address resolution， a node sends a neighbor solicitation message in order to discover which of these？（）A、The Layer 2 multicast address of the destination nodeB、The solicited node multicast address of the destination nodeC、The Layer 2 address of the destination node based on the destination IPv6 addressD、The IPv6 address of the destination node based on the destination Layer 2 address
考题
Which of the following class addresses is reserved for multicast？（）A、 Class AB、 Class BC、 Class CD、 Class D
考题
单选题During the IPv6 address resolution， a node sends a neighbor solicitation message in order to discover which of these？（）A
The Layer 2 multicast address of the destination nodeB
The solicited node multicast address of the destination nodeC
The Layer 2 address of the destination node based on the destination IPv6 addressD
The IPv6 address of the destination node based on the destination Layer 2 address
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单选题During the IPv6 address resolution， a node sends a neighbor solicitation message in order to discover which of these？ （）A
The Layer 2 multicast address of the destination nodeB
The solicited node multicast address of the destination nodeC
The Layer 2 address of the destination node based on the destination IPv6 addressD
The IPv6 address of the destination node based on the destination Layer 2 address
考题
多选题Which three IP multicast group concepts are true？ （Choose three.） （）AIf a packet is sent to a multicast group address， all members of the multicast group will receive itBIf a packet is sent to a multicast group address， the multicast frame contains the source multicast addressCA router does not have to be a member of a multicast group to receive multicast data.DA router does not have to be a member of a multicast group to send to the group.EA router must be a member of a multicast group to receive multicast data.FA router must be a member of a multicast group to send to the group.
考题
单选题Which statement is correct in reference to IPv6 multicast？（）A
IPv6 multicast uses Multicast Listener Discovery.B
The first 8 bits of an IPv6 multicast address are always FF （1111 1111）.C
IPv6 multicast requires MSDP.D
PIM dense mode is not part of IPv6 multicast.
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多选题Which three IP multicast address related statements are true？ （Choose three.） （）AMulticast 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.BMulticast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers.CMulticast addresses 224.0.0.13 and 224.0.0.22 are reserved link-local addresses used by PIMv2 and IGMPv3.DBecause 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.EMulticast address 224.0.1.1 has been reserved for the Network Time Protocol （NTP） by the IANAFThe administratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses.
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多选题Which two multicast address ranges are assigned as source-specific multicast destination addresses andare reserved for use by source-specific applications and protocols？ （）A232.0.0.0/8B239.0.0.0/8C232.0.0.0/4DFF3x：：/32EFF2x：：/32FFF3x：：/16
考题
多选题Which three attributes are carried in a source active message?（）ANLRI informationBIP address of originating RPCaddress of multicast sourceDall active RPs in the local domainEgroup address to which the source is sending
考题
多选题Which three IP multicast address related statements are true?（）AMulticast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3BBecause they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget herCMulticast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1DMulticast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routersEThe a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addressesFMulticast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA
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 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.
考题
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
单选题Which of the following class addresses is reserved for multicast？（）A
Class AB
Class BC
Class CD
Class D
考题
多选题In computer networking a multicast address is an identifier for a group of hosts that have joined amulticast group. Multicast addressing can be used in the Link Layer （OSI Layer 2）， such as Ethernet Multicast， as well as at the Internet Layer （OSI Layer 3） as IPv4 or IPv6 Multicast. Whichtwo descriptions are correct regarding multicast addressing？（）AThe first 23 bits of the multicast MAC address are 0x01-00-5E. This is a reserved value thatindicates a multicast applicationBThe last 3 bytes （24 bits） of the multicast MAC address are 0x01-00-5E. This is a reservedvalue that indicates a multicast applicationCTo calculate the Layer 2 multicast address， the host maps the last 23 bits of the IP address intothe last 24 bits of the MAC address. The high-order bit is set to 0DThe first 3 bytes （24 bits） of the multicast MAC address are 0x01-00-5E. This is a reservedvalue that indicates a multicast application
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.
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