Which three statements are true about Source Specific Multicast? (Choose three.)

A user has no network connectivity. A check of the associated port indicates that the interface is up, the line protocol is down. Which item would most likely cause this problem?

For the following LMI types, which three can be configured for use with Frame Relay on a Cisco router? (Choose three.)

Multi Protocol Label Switching (MPLS) is a data-carrying mechanism that belongs to the family of packet-switched networks. For an MPLS label, if the stack bit is set to1, which option is true?

The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart, which mechanism is used tocontinue forwarding packets during a switchover?

What keywords do you need to the access-list to provide to the logging message like source address and source mac address?

While deploying a new switch, you accidently connect ports 3/12 and 3/18 together, creating a loop. STP detected it and placed port 3/18 in blocking mode. Why did STP not place port 3/12 in blocking mode instead?

You deployed new fibers in your network to replace copper spans that were too long. While reconnecting the network, you experienced network problems because you reconnected wrong fibers to wrong ports. What could you do to prevent this type of problem in the future, particularly when connecting and reconnecting fiber pairs?

What are the mandatory, well-known BGP attributes?

You use OSPF as your network routing protocol. You use the command show ip route and you see several routes described as O, O IA, O E1, and O E2. What routes are in your area?