Hybrid-Cloud-Observability-Network-Monitoring Practice Questions

NetFlow defines a flow as a unidirectional sequence of packets sharing common values in seven key fields. The three essential data points from your list used to determine if packets are part of the same flow are IP address (source and destination), Layer 3 protocol (such as TCP or UDP), and port number (source and destination). The interface name is not used to identify a unique flow.

Resolving and storing hostnames at the time a flow record is received means the platform does not need to resolve the hostname each time a report or widget is loaded, which:

Decreases database query times: Hostnames are already resolved, making queries for reports and dashboards much faster.

Flow views and widgets load faster: With DNS already resolved, the interface does not have to perform on-demand DNS lookups, reducing latency in the web console.

The SolarWinds documentation states:

" Immediate DNS resolution upon flow record ingestion reduces lookup delays during analysis and widget loading, resulting in improved performance and reduced query times. "

Domain widgets and reports run with DNS names, but the core advantage is performance rather than widget availability.

A.  

C.  

The documentation states:

" A higher probing frequency provides faster updates in NetPath views but can reduce accuracy due to more frequent sampling. Lower frequency means slower updates but typically results in higher accuracy and less system load. "

When the SNMP community string is changed on a device, SolarWinds recommends:

Edit the node properties and save the changes.

Update the community string in node properties to match the new value on the device.

" To restore polling, edit the node in SolarWinds, update the SNMP community string in the properties, and save the changes. This ensures that SolarWinds can authenticate and resume polling. Deleting and re-adding the node is not necessary, nor is restarting the SNMP service on the device in most cases. "