If you select three separate parcels from a parcel feature class, how many rows would be selected in the associated attribute table?

Answer

Three

Feature classes are the collections of common features,these collections each has a spatial representation such  as points. and common set of attribute columns. so if you select three separate parcels from a future class  three rows will be selected in the selected attribute table because each representation has spatial representation.

This combines authentication via a shared secret cryptography algorithm key with hashing. It involves the client and server each with a private key. The client creates a unique hash per request to the server through hashing the request with private keys.