Fill in the blanks with the appropriate antonym of

The join operation can be defined as

Which of the following is not a valid keyword in C++ language?

In the context of database backup, what does the term "point-in-time recovery" refer to?

Which recovery model in a database allows for point-in-time recovery using transaction logs?

Which unit fetches instructions from memory?

What application layer protocol is used for the retrieval of email from a mail server?

Which computer architecture allows multiple processors to work together on a single task?

Which cryptographic system uses two different keys for encryption and decryption?

Which transmission medium is least susceptible to electromagnetic interference?

What is the output of the following code?

print(0.3 + 0.5 == 0.8)