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 version
show flash
show buffers
show memory

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Computer Networking
What is the purpose of Spanning Tree Protocol in a switched LAN?

To prevent routing loops in networks with redundant paths
To provide a mechanism for network monitoring in switched environments
To manage the VLAN database across multiple switches
To prevent switching loops in networks with redundant switched paths
To create collision domains

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