Computer Networking
A network administrator wants to upgrade the IOS of a router without removing the image currently installed. What command will display the amount of memory consumed by the current IOS image and indicate whether there is enough room available to hold both the current and new images?

show buffers
show flash
show memory
show version

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Computer Networking
Which of the following is true regarding VLANs?

All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
You should not have more than 10 switches in the same VTP domain.
You must have at least two VLANs defined in every Cisco switched network.
VTP is used to send VLAN information to switches in a configured VTP domain.

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Computer Networking
Demodulation is a process of

performing data description.
converting analog to digital signals
multiplexing various signals into one high speed line signals
converting digital to analog signals

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