Scripts recorded and replayed at "Browser Level" tend to use higher Network Bandwidth usage, than an equivalent script recorded at "Page-Based" level. The reason for this is because; at "Page-Based" level a script executes each function call at a time, and waits for the server response for the current request, before proceeding to the next request. Browser Level scripts differ in that once the current request is sent, control is immediately passed to the next function call in the script. This results in asynchronous communication with multiple threads working over the wire at a given time. This will result in greater network bandwidth usage.
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