Which one of the following is a correct

Which component is responsible for translating virtual addresses to physical addresses?

What does the complexity class P refer to?

What is the purpose of a weak entity in the ER model?

Which PHP function is used for connecting to a MySQL database?

What is the main purpose of DNS (Domain Name System)?

What consensus mechanism is used by the Bitcoin blockchain?

The SI unit for measuring temperature is:

HTTP uses which protocol for data transfer?

Which type of memory can be electrically erased and reprogrammed in blocks or sectors?

What is the Java Virtual Machine (JVM)?