Computer Networking
ICMP (Internet Control Message Protocol) is

None of these
a protocol that handles error and control messages
a protocol used to monitor computers
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another

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

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

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