-
When you execute the "ip helper-address" command on a router， which three UDP ports getenabled automatically by default？（）
A . 53（DNS）
B . 69（TFTP）
C . 515（LPR）
D . 161（SNMP）
E . 49（TACACS）
-
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.
-
Which three IP addresses are valid multicast addresses?（）
A . 169.254.23.59
B . 223.254.255.254
C . 225.1.1.1
D . 227.43.34.2
E . 238.3.3.3
F . 249.1.2.3
-
To which of these does IP multicast send packets?（）
A . a single host
B . a subset of hosts
C . all hosts sequentially
D . all hosts simultaneously
-
In relation to MPLS Multicast VPN， which three statements about multicast distribution （MDT） groups aretrue？ （）
A . Default MDT groups are used for PIM control traffic， low-bandwidth sources， and flooding of sparse mode traffic.
B . MDTs are built in customer networks
C . Data MDT groups are used for high-bandwidth sources to reduce replication to uninterested PEs.
D . MDTs are built in provider networks
E . The number of MDTs depends on PIM modes of MDT groups.
-
Which three of the following protocols will be forwarded to a host specified by the ip helper - address interface configuration command if the configuration has not been modified by the ip forward - protocol udp global con figuration command?（）
A . BOOTP
B . TFTP
C . ARP
D . DNS
E . proxy - ARP
F . FTP
-
Which two design concerns must be addressed when designing a multicast implementation?（）
A . only the low-order 23 bits of the MAC address are used to map IP addresses
B . only the low-order 24 bits of the MAC address are used to map IP addresses
C . only the high-order 23 bits of the MAC address are used to map IP addresses
D . only the low-order 23 bits of the IP address are used to map MAC addresses
E . the 0x01004f MAC address prefix is used for mapping IP addresses to MAC addresses
F . the 0x01005e MAC address prefix is used for mapping IP addresses to MAC addresse
-
What are three methods that may be use d to allow a switch to determine which ports to forward IP multicast messages to?（）
A . IGMP
B . IGMP snooping
C . PIM
D . CGMP
E . static assignment
F . CDP
-
Which three actions are required to access the network statistics on a remote Cisco Unified Wireless IP Phone 7921G via a web browser?（）
A . Browse to the phone using the MAC address of the phone.
B . Use HTTPS:// preceding the address of the phone.
C . Change web access to read/write for the MAC address of the phone on Cisco Unified Communications Manager.
D . Enter the username and password of the phone.
E . Ensure that the host is on the same subnet as the remote phone.
-
Which three statements best describe multicast operation on Cisco Nexus switches in a data center？（）
A . Cisco NX-OS Software does not support PIM dense mode.
B . The command ip multicast-routing must be enabled in Cisco NX-OS Software before any multicast configuration is possible on the switch.
C . PIM CLI configuration and verification commands are not available until you enable the PIM feature with the feature pim command.
D . Cisco NX-OS Software supports multicast routing per Layer 3 VRF instance.
E . The default PIM operational mode on the Cisco Nexus 7000 switch is SSM.
-
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 - DM
B . PIM - SM
C . PIM - RP
D . CGMP
E . IGMP snooping
-
Which three statements are true about IP multicast configuration?（）
A . PIM sparse - dense mode and PIM dense mode require an RP on the network.
B . PIM sparse mode and PIM dense mode require an RP on the network.
C . PIM sparse mode interfaces are always added to the multicast routing table in a router.
D . PIM sparse mode and PIM sparse - dense mode require an RP on the network.
E . PIM dense mode interfaces are always added to the multicast routing table in a router.
F . PIM sparse - dense mode acts as PIM dense mode if an RP is not known.
-
Which two IP multicast addresses belong to the group represented by the MAC address of 0x01-00-5E-15-6A-2C？ （）
A . 224.21.106.44
B . 224.25.106.44
C . 233.149.106.44
D . 236.25.106.44
E . 239.153.106.44
-
Cisco IOS XR Software Multicast Routing Implementation， which three features are supported in IPv6 onCisco CRS router？（）
A . PIM-SSM
B . Aggregation multicast
C . PIM-Bidirectional
D . OOR handling
E . integrated multicast
F . Multicast NSF
-
Which three statements are true about Source Specific Multicast？（）
A . Is best suited for applications that are in the one-to-many category.
B . SSM uses shortest path trees only.
C . The use of SSM is recommended when there are many sources and it is desirable to keep the amount of mroute state in the routers in the network to a.
D . There are no RPs to worry about.
-
To which of these does IP multicast send packets？（）
A . a single host
B . a subset of hosts
C . all hosts sequentially
D . all hosts simultaneously
-
When IP multicast is enabled via PIM, which mode uses the flood and prune metho d? Select the best response.（）
A . PIM sparse - dense
B . Bidir - PIM
C . PIM - RP
D . PIM - DM
E . PIM - SM
-
Which two multicast IP addresses can be represented by the multicast MAC addre ss 0100.5e0A.0A07?（）
A . 228.10.10.7
B . 229.11.10.7
C . 229.138.10.7
D . 229.138.10.8
E . 228.10.10.8
F . 228.10.138.7
-
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.
-
Which two range descriptions correctly describe IP addressing to use when enabling multicast support using the Cisco Unified Wireless Solution?（）
A . globally scoped address range
B . 239.0.0.X or 239.128.0.X address range
C . administratively scoped address range that does not overlap with a link-local MAC address
D . any Class D address range
E . site-local scoped address range
-
Which two design concerns must be addressed when designing a multicast implementation？（）
A . only the low-order 23 bits of the MAC address are used to map IP addresses
B . only the low-order 24 bits of the MAC address are used to map IP addresses
C . only the high-order 23 bits of the MAC address are used to map IP addresses
D . only the low-order 23 bits of the IP address are used to map MAC addresses
E . the 0x01004f MAC address prefix is used for mapping IP addresses to MAC addresses
F . the 0x01005e MAC address prefix is used for mapping IP addresses to MAC addresse
-
Which two statements are correct regarding multicast implementation using a WLAN controller (v5.2) and AP?（）
A . Multicast traffic is sent out on Cisco APs at the highest mandatory data rate.
B . Multicast traffic is sent out on Cisco APs at the highest supported data rate.
C . On Cisco APs， multicast traffic and beacons are sent out at the same data rates to maintain a common cell size for normal data as well as multicast data.
D . If there is more than one mandatory data rate， multicast traffic will be sent at the highest mandatory rate and beacons will be sent at the lowest mandatory rate.
E . On Cisco APs， multicast traffic will be sent out at the highest data rate that a client can maintain with the AP.
-
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.
-
Which statement describes the WLCv5.2 delivery of a multicast packet from a wired PC source on VLAN_X to a respective wireless client using SSID_X, using a WLAN controller enabled for multicast?（）
A . A packet is delivered to Cisco WLC and forwarded via multicast to all of its associated APs, and finally to all wireless clients of that Cisco WLC, via wireless multicast.
B . A packet is delivered to Cisco WLC and forwarded via unicast to all of its associated APs, and finally to all wireless clients of that Cisco WLC, via wireless unicast.
C . A packet is delivered to Cisco WLC and forwarded via multicast to all of its associated APs, discarded at APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joinedwireless clients via wireless multicast.
D . A packet is delivered to Cisco WLC and forwarded via unicast to all of its associated APs, discarded at APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joined wireless clients via wireless multicast.
E . A packet is delivered to Cisco WLC and forwarded via multicast to all of its associated APs, discarded at APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joinedwireless clients via wireless unicast.
F . A packet is delivered to Cisco WLC and forwarded via unicast to all of its associated APs, discarded at APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joined wireless clients via wireless unicast.
