answer all please

• At what layer of the TCP/IP model will you find SNMP? What are the four base commands in the protocol?
• Please discuss the need for a MIB, what is it and where is it? How is the MIB related to SNMP? Provide an example of a known MIB number and discuss what it does?
• What level of network documentation should be available at a well documented site [hint: there are at least four important site specific information documents that should be available]
• Why do we need SNMP agents?
• Can two completely independent network management platforms made by two different vendors communicate and collect information from arbitrary network devices on the same network? How?