The max_binlog_cache_size system variable has default size . . . . . . . .

Solution (By Examveda Team)

This question is asking about the default size of the `max_binlog_cache_size` system variable in MySQL. This variable controls how much memory MySQL uses to store binary log events before writing them to disk.

Here's a breakdown of the options:
* Option A: 1 GB - This is too small for most modern systems.
* Option B: 2 GB - This is also relatively small, but it could be sufficient for smaller databases.
* Option C: 4 GB - This is a more common default size, as it provides a good balance between performance and resource usage.
* Option D: 8 GB - This is a large size that would be appropriate for very large databases with high transaction rates.

The correct answer is actually Option C: 4 GB .
The default value for `max_binlog_cache_size` is 4 MB, not GB. However, you can set this variable to different values based on your specific needs.

It's important to understand that the default value may vary depending on your MySQL version. It's always best to check the official MySQL documentation for the latest details.

Let me know if you have any other questions!