Name some network monitoring tools?

For a DevOps interview question about network monitoring tools, you can mention several popular options commonly used in the industry. Here are some examples:

1. Nagios: Nagios is a widely-used open-source monitoring system that monitors systems, networks, and infrastructure.
2. Zabbix: Zabbix is another open-source monitoring software that offers monitoring metrics, among other features, and supports both agent-based and agentless monitoring.
3. Prometheus: Prometheus is an open-source monitoring and alerting toolkit designed for reliability and scalability. It’s especially popular in cloud-native environments.
4. Grafana: Grafana is an open-source platform for monitoring and observability, often used alongside other tools like Prometheus to visualize metrics and create dashboards.
5. Datadog: Datadog is a cloud-based monitoring and analytics platform that offers infrastructure monitoring, application performance monitoring (APM), and log management in a single platform.
6. Splunk: Splunk is a widely-used platform for searching, monitoring, and analyzing machine-generated big data, including logs and metrics.
7. ELK Stack (Elasticsearch, Logstash, Kibana): The ELK Stack is a combination of three open-source tools used for log management and analysis. Elasticsearch is used for searching and analyzing data, Logstash for centralizing, parsing, and transforming logs, and Kibana for visualizing the data.
8. SolarWinds: SolarWinds offers a range of network monitoring and management tools, including Network Performance Monitor (NPM) and Server & Application Monitor (SAM).

These are just a few examples, and there are many other network monitoring tools available, each with its own strengths and use cases. The key is to choose the tool or combination of tools that best fit the specific needs and requirements of your organization.