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

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

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Computer Networking
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

Global network
Electronic newspaper
Electronic mail
Paperless office
None of these

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Computer Networking
What is a stub network?

A network that has only one entry and exit point.
A network with more than one exit and entry point.
A network with only one entry and no exit point.
A network with more than one exit point.

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Computer Networking
What is the problem with an interface if you type show interface serial 0 and receive the following message? "Serial0 is administratively down, line protocol is down."

The administrator has the interface shut down.
No cable is attached.
The keepalives are different times.
The administrator is pinging from the interface.

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