where is the depth of market data coming from in my MT5 demo account?

 
where are these orders from? 
 
Only your broker has data.
 

Most likely from a real server with some delay.

However it is not really that important because:

1) Your demo order will not enter the book.

2) Your pending orders will be triggered by last < or > bid/ask depending on direction, not taking into account your position in the queue. 

 
William Roeder #:
Only your broker has data.
How can I trade the depth of market 
Plz
 
Feisal Ahmed Mohamed #: How can I trade the depth of market. Plz

By researching how it works and choosing a broker and the respective symbols that provide it.

Reason: