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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
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更多 “多选题Which two multicast protocol statements are true?（）ASparse mode multicast uses a pull model to send multicast traffic to where it is requestedBDense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted trafficCDense mode multicast requires explicit join messa ges from their membersDSparse mode uses reverse path forwarding (RPF) to prune off redundant flowsEThe primary use of sparse mode multicast is for test labs and router performance testing” 相关考题
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Which two statements are true about AH?() (Choose two.)
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Which two multicast protocol statements are true?()
A. Sparse mode multicast uses a pull model to send multicast traffic to where it is requestedB. Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted trafficC. Dense mode multicast requires explicit join messa ges from their membersD. Sparse mode uses reverse path forwarding (RPF) to prune off redundant flowsE. The primary use of sparse mode multicast is for test labs and router performance testing
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Which two statements are tru e about the rendezvous point (RP) in a multicast network?()
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Which two statements are true about Internet Group Management Protocol (IGMP) snooping?()
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考题
Which three statements are true about the Internet Group Management Protocol (IGMP)? ()
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Which three IP multicast address related statements are true?（）A、Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3B、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 toget herC、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 1D、Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routersE、The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addressesF、Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA
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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.
考题
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 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.
考题
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 treeB、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 treeD、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
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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 checkedB、RPF check should be done against the route to the source S of the corresponding PIM-SM domainC、RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SAD、RPF checking Session Advertisement （SA） messages will cause message looping
考题
In order to configure two routers as anycast RPs， which of these requirements， af a minimum， must besatisfied？（）A、Multicast Source Discovery Protocol mesh-groups must be configured between the two anycast RPs.B、The RPs must be within the same IGP domain.C、Multicast Source Discovery Protocol must be configured between the two anycast RPs.D、The two anycast RPs must be IBGP peers.
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Which three statements about anycast RP are true？ （）A、MSDP is running between anycast RPsB、Anycast RP provides redundancy and load-sharing capabilitiesC、Multicast BGP is running between anycast RPsD、In anycast RP，two or more RPs are configured with the same multicast IP address on loopback interfacesE、In anycast RP，two or more RPs are configured with the same unicast IP address on loopback interfaces
考题
In order to configure two routers as anycast RPs，which of these requirements，at a minimum， must be satisfied？（）A、Multicast Source Discovery Protocol mesh-groups must be configured between the two anycast RPs.B、The RPs must be within the same IGP domain.C、Multicast Source Discovery Protocol must be configured between the two anycast RPs.D、The two anycast RPs must be IBGP peers.
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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.
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
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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.
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Which two statements are true about the forwarding table?（）A、The forwarding table lists each source protocol and preference for each destination.B、The forwarding table contains only active routes.C、The forwarding table is used to process transit packets.D、The forwarding table is stored in compact flash.
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Which two statements are true about the forwarding table?（）A、The forwarding table lists each source protocol and preference for each destinationB、The forwarding table constains only active routesC、The forwarding table is used to process transit packetsD、The forwarding table is stored in compact flash
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Which two statements are true about the forwarding table?（）A、The forwarding table lists each source protocol and preference for each destination.B、The forwarding table contains only active routes.C、The forwarding table is used to process transit packets.D、The forwarding table is stored in compact flash
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多选题Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）AThe multicast sources must register with the RP to form the multicast distribution tree.BAn RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).CThe multicast receivers must register with the RP to form the multicast distribution tree.DAn RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).EAn RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).FTo form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
考题
多选题Which two statements are true about AH?（） (Choose two.)AAH provides data integrity.BAH is identified by IP protocol 50.CAH is identified by IP protocol 51.DAH cannot work in conjunction with ESP
考题
多选题Which two statements are true about the rendezvo us point (RP) in a multicast network?（）AThe multicast sources must register with the RP to form the multicast distribution tree.BAn RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).CThe mu lticast receivers must register with the RP to form the multicast distribution tree.DAn RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).EAn RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).FTo form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
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
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多选题Which two statements are true about the forwarding table?（）AThe forwarding table lists each source protocol and preference for each destinationBThe forwarding table constains only active routesCThe forwarding table is used to process transit packetsDThe forwarding table is stored in compact flash
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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 traffic.CSparse mode multicast uses a pull model to send multicast traffic to where it is requested.DSparse mode uses reverse path forwarding （RPF） to prune off redundant flows.EThe primary use of sparse mode multicast is for test labs and router performance testing.
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