Choose two commands that are required to enable multicast on a router， when it is known that the receivers use a specific functionality of IGMPv3.（）

Which message type is constructed and sent from an MSDP router to its MSDP peers when it  receives a PIM register message （knowing that the MSDP router is also configured as an RP for  the PIM domain）？（）

For the following ports， which port is on every bridge in a Spanning Tree Protocol IEEE 802.1w network except the root bridge？（）

IEEE 802.1w is a Rapid Spanning Tree Protocol （RSTP） that can be seen as an evolution of the 802.1 standard. What are the port roles described by 802.1w？（）

f a Cisco switch is configured with VTPv1 in transparent mode， what is done with received VTP advertisements？（）

Multicast is being deployed in the network， and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast， the network monitoring tools show periodic spikes in link utilization throughout the network， even in areas where the video application is not being used. What could be a possible cause？（）

Which IOS security feature is configured by the ip inspect inspection-name {in  out} command？（）

Phase I and Phase II DMVPN differ in terms of which of these characteristics？（）

An administrator of a peer-to-peer server application reports that the maximum bandwidth that his application receives is 90 Mb/s. You have an 8-port，100-Mb/s EtherChannel bundle on the switching infrastructure between the two servers， resulting in a bidirectional throughput of more than what is recorded. Which two solutions would allow for more bandwidth for the application？（）

Which switch port error is an indication of duplex mismatches on 10/100/1000 IEEE 802.3u  Gigabit Ethernet ports？（）