1. Three managed hubs with interface id 11-13 (fourth decimal position value) in subnetwork 200.100.100.1 are being monitored by a network management system (NMS) for mean time between failures using the SysUp time in a system {internet. Mgmt..mib-2.system} group. The NMS periodically issues the command get-request object-instance community OBJECT IDENTIFIER Fill the operands in the three set of requests that the NMS sends out. Use public for the community variable.

2. You are assigned the task of writing specifications for configuring SNMP managers and agents for a corporate network to implement the access policy. The policy defines a community profile for all managed network components where a public group (community name public) can only look at the System group, a privileged group (community name privileged) that can look at all the MIB objects, and an exclusive group (community name exclusive) that can do a read-write on all allowed components. Present a figure (similar, but not identical, to the flow chart shown in Figure 5.2) showing the paths from the SNMP managers to managed objects of a network component.

3. Fill in the data in the trap PDU format shown in Figure 5.9 for a message sent by the hub shown in Figure 4.2(a) one second after it is reset following a failure. Treat the trap as generic and leave the specific trap field blank. The only varBind that the trap sends is sysUpTime. (Refer to RFC 1157 and RFC 1215.)

4. An SNMP manager sends a request message to an SNMP agent requesting sysUpTime at 8:00 A.M. Fill in the data for the fields of an SNMP PDU shown in Figure 5.5. Please use SNMP for the application header, enumerated INTEGER 0 for version-1, and public for community name.4.

5. In Exercise 4, if the SNMP manager sent the request at 8:00 A.M. and the SNMP agent was reset at midnight after a failure, fill in the fields for the SNMP PDU on the response received.