Computer Networking
A machine that connects to two or more electronic mail systems and transfers mail messages among them is known as

bridges
None of these
mail gateway
User Agent
Gateways

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Computer Networking
Which of the following is true when describing a global unicast address?

These are like private addresses in IPv4 in that they are not meant to be routed.
These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.
Packets addressed to a unicast address are delivered to a single interface.
These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.

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