ZOOKER, you've asked a question and I've acknowledged it with "standby" so your message has been passed. You not saying anything is sufficient to indicate you've understood. When do you stop acknowledging the acknowledgements? "Roger your roger"
It might be appropriate under difficult comms conditions to acknowledge a "standby", but under normal clear VHF comms there's no point. You shut up, you've understood, you keep talking then clearly not.
I've always used "standby" to mean "wait and I'll answer you shortly" (maybe I'm busy or maybe I need to involve the guy next door). "Will advise" to mean expect an answer some time in the future.