Free Practice Questions for SolarWinds Hybrid-Cloud-Observability-Network-Monitoring Exam

Comprehensive and Detailed Explanation From Exact Extract:

Unknown flow traffic often occurs when SolarWinds receives flow data from sources not defined in its database, or when flow-enabled devices are not sending data to the expected port.

Add the devices and interfaces to SolarWinds' database: Ensures flow data is properly associated with monitored objects, resolving the "unknown" status.

Ensure flow-enabled devices send data to the appropriate port: If data is sent to the wrong port, SolarWinds cannot process it correctly, leading to unknown events.

SolarWinds documentation notes:

"Unknown flow traffic typically indicates a mismatch between flow sources and known device/interface configurations, or incorrect UDP port configuration. Registering devices/interfaces and verifying port assignments resolves most unknown flow issues."

Comprehensive and Detailed Explanation From Exact Extract:

When a device returns multi-core CPU statistics as a table, SolarWinds Device Studio allows you to use the "Add Calculated Value" option and select the average function. This enables the web console widget to display the computed average CPU utilization automatically.

The documentation explains:

"For devices with multi-core CPUs, you can use the Add Calculated Value feature in the Device Studio to compute the average (or other statistical functions) of returned table values, which can then be visualized directly in widgets."

Comprehensive and Detailed Explanation From Exact Extract:

False positives in hardware health alerts often occur when the polled MIB on the device is not the preferred or correct MIB for that particular hardware platform. This can result in SolarWinds interpreting SNMP data incorrectly, causing inaccurate alerts. Ensuring that the device is using the recommended MIB for hardware health resolves these false alert issues.

Comprehensive and Detailed Explanation From Exact Extract:

Duplicate flow data typically results when both ingress and egress flow monitoring are applied simultaneously on interfaces. If both directions are enabled either globally (all interfaces) or locally (on a single interface), the same flow is counted twice—once entering and once leaving—resulting in duplicate statistics.

Comprehensive and Detailed Explanation From Exact Extract:

With Network Insight features (including for Palo Alto and F5 BIG-IP devices) installed alongside Network Configuration Manager and Performance Monitoring, you can monitor:

High availability details: Provides information on device redundancy, failover status, and clustering.

Policy details: Enables insight into firewall, security, and NAT policies for managed devices.

Access lists and VPNs may be monitored in other modules, but the primary, advanced insight is for high availability and policy configurations.

Comprehensive and Detailed Explanation From Exact Extract:

The Flow Navigator in SolarWinds NetFlow Traffic Analyzer (NTA) is a powerful custom filter and analysis tool. It enables users to apply multiple filters to NetFlow data, allowing the visualization of specific statistics about the entire network or selected subsets, such as all traffic from a certain IP range or application. This approach eliminates the need to manually click through device-by-device views, instead providing comprehensive traffic analysis across the whole monitored environment through a single, customizable interface.

Comprehensive and Detailed Explanation From Exact Extract:

Device Studio supports advanced custom polling, allowing you to build pollers for technologies such as multi-CPU/memory, node details (e.g., chassis, serial number), and single CPU/memory. While interface traffic polling is best accomplished through standard interface resources, Device Studio is designed for more advanced or complex device metrics that are not available via built-in polling.

Comprehensive and Detailed Explanation From Exact Extract:

List resources is the menu where you can select or deselect which interfaces (including operationally down and administratively shutdown ones) are monitored for a node. This allows you to uncheck unnecessary or down interfaces and prevent them from impacting the node status.

Comprehensive and Detailed Explanation From Exact Extract:

To add additional NetFlow collector ports, you must stop the NetFlow service and then specify multiple ports separated by commas in the NetFlow collector services widget.

From the documentation:

"To configure multiple collector ports, stop the NetFlow service, edit the collector ports in the widget by separating them with commas, and then restart the service."

Comprehensive and Detailed Explanation From Exact Extract:

To create a NetPath probe in SolarWinds, you need to specify a source (which requires a Windows-based agent or node) and a destination port. The documentation states:

“To deploy a NetPath probe, select a Windows node or agent as the source and specify the connection port for the service to be monitored. Linux nodes and agents are not supported for NetPath probes.”