For example, I have subscribed to 2 symbols at a time and one of the symbol list price changes and other don't have any movement. Will I get current values of the symbols at the same time? or will I get data for only the symbol with change in list price?
Let us consider you subscribed to two instruments. As soon as you subscribe, you will receive one tick for both instruments. After that, you will receive ticks as and when the data changes.
Consider you have subscribed in mode LTP, you will receive tick only when LTP changes. If you are subscribed in mode Quote then you will receive tick when there is a change in quote level data. If you are subscribed in mode Full then you will receive tick when there is a change in market depth data also.
Consider you have subscribed in mode LTP, you will receive tick only when LTP changes.
If you are subscribed in mode Quote then you will receive tick when there is a change in quote level data.
If you are subscribed in mode Full then you will receive tick when there is a change in market depth data also.