One reason someone may want to use a free network monitoring solution is that they're intimidated by a paid solution. In fact, paid network monitoring tools are typically much easier to use than their free counterparts. This is certainly true when it comes to ipMonitor, as the user-friendly interface helps you quickly identify current [and even potential] issues so you can get to the bottom of them before they cause even more problems for your network performance. ipMonitor helps ensure you never miss anything with its powerful, configurable alerting system. With more than a dozen different notification types built-in, ipMonitor helps you make sure the right people on your team know about potential problems as soon as the tool detects them. Cacti® is another of the monitoring warhorses that has endured as a go-to for network monitoring needs. It allows you to collect data from almost any network element, including routing and switching systems as well as firewalls, and put that data into robust graphs. If you have a device, it’s possible that Cacti’s active community of developers has created a monitoring template for it. Cacti supports SNMP polling, which itself covers a wide range of network devices. You can also extend Cacti's capabilities to use scripts, queries, or commands for data collection and save it as a template to use for polling other devices for similar datasets. Cacti leverages the power of RRDTool, an open-source data logging and graphing system for creating graphs from the stored datasets. RRDTool's data consolidation lets you store collected data forever and is limited only by the size of your storage. Cacti also allows you to add multiple users and give them access with or without edit permissions, which is perfect for service providers and enterprises with a large NOC team.

Answer the following questions based on the case study.

1. Critique on the usage of paid network monitoring tools.

2. How you justify the fact that ipMonitor is a powerful network monitoring tool. 

3. Compare and contrast ipMonitor and Cacti network monitoring tools. 

4. Depending on the requirement of the network, network monitoring tools can be chosen. Justify the statement in light of the case study.