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

mail gateway
User Agent
bridges
Gateways
None of these

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Computer Networking
Which of the following characteristic(s) is/are suited to the PSS applications?

None of these
Multiple remote host or applications accessed by a single local access circuit terminal and circuit
All of these
widely dispersed terminals and access to international packets switched services
bursty traffic and low communications intensity

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

Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.
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.
Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.

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