單項(xiàng)選擇題

You have taken a Logical Volume Manager (LVM) snapshot backup of a volume that contains the MySQL data directory. Why is it important to remove snapshots after completing a RAW backup in this way?（）

A.The snapshot size will continue to grow as changes to the volume are made
B.The snapshots take a significant amount of disk space as they are a duplicate copy of the data
C.The system can only support one snapshot per volume, and you need to remove it to be able to take your next backup
D.The system keeps a copy of changes in memory and can cause an out of memory event

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單項(xiàng)選擇題

MySQL is installed on a Linux server and has the following configuration:

What is the purpose of changing ownership of datadir to the ‘mysql’ user?（）

A.MySQL requires correct file ownership while remaining secure
B.MySQL needs to be run as the root user, but file cannot be owned by it
C.MySQL cannot be run as the root user

多項(xiàng)選擇題

Which two options describe how MySQL Server allocates memory?（）

A.Thread memory is pre-allocated up to thread_cache_size for performance
B.Each connection may have its own per-thread memory allocations
C.Global memory resources are allocated at server startup
D.Each thread allocates memory from a global pool

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You have taken a Logical Volume Manager (LVM) snapshot backup of a volume that contains the MySQL data directory. Why is it important to remove snapshots after completing a RAW backup in this way?（）

你可能感興趣的試題

MySQL is installed on a Linux server and has the following configuration: What is the purpose of changing ownership of datadir to the ‘mysql’ user?（）

Which two options describe how MySQL Server allocates memory?（）

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MySQL is installed on a Linux server and has the following configuration:

What is the purpose of changing ownership of datadir to the ‘mysql’ user?（）