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Correct Answer: C. Choose three. These IPv6 addresses are global addresses, these addresses can be assigned to more than one interface unlike an IPv6 unicast address. Anycast is designed to send a packet to the nearest interface that is a part of that anycast group. The sender creates a packet and forwards the packet to the anycast address as the destination address which goes to the nearest router. The nearest router or interface is found by using the metric of a routing protocol currently running on the network.
However in a LAN setting the nearest interface is found depending on the order the neighbors were learned. The anycast packet in a LAN setting forwards the packet to the neighbor it learned about first. TTL B. MAC address forwarding C. Collision avoidance D. Port blocking Correct Answer: D.
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In the event of Publisher server failure, No administration move, add, or changes can be done. Regions allow you to constrain the codecs selected when one device calls another.
Most often, you use regions to limit the bandwidth used when calls are placed between devices connected by an IP WAN.
However, you can also use regions as a way of providing higher voice quality at the expense of network bandwidth for a preferred class of users. When you define a new region, Cisco CallManager Administration asks you to define the compression type used for calls between devices within the region.
You also define, on a region-by-region basis, compression types used for calls between the region you are creating and all other regions. You associate regions with device pools. All devices contained in a given device pool belong to the region associated with that device pool. When an endpoint in one device pool calls an endpoint in another, the codec used is constrained to what is defined in the region.
If, for some reason, one of the endpoints in the call cannot encode the voice stream according to the specified codec, CallManager attempts to introduce a transcoder , to allow the endpoints to communicate.
Figure depicts a configuration that uses three regions to constrain bandwidth between end devices. Phones and are in the main campus; phone is in a branch office. Calls within the main campus use the G.
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