Hi
Wireless sensor is a small device like an Access Point that can be used to probe your wireless network and the statistic is shown in the DNAC Dashboard.
Number of concurrent endpoint is how many endpoints you have on the network during a period. Imagine that in your company employees use laptops and they take the laptops home when they leave. During the day you may have 1000 endpoints (concurrent). During the night this number will be much more smaller.
Ratio of Wireless and wired: This is the relationship between both. Meaning, you may have 1000 endpoint: 500 wireless and 500 wired.
Number of transientes endpoints. This is the most confuse maybe. This is defined probably due Data base size. As the DNAC will store device information for a period. For most of company the number of transient endpoint will not change much as only allowed device can connect.
