CompTIA SY0-501 Security+ Take Ten Challenge #7

7-3: Which of the following would describe data-in-use?
- A credit card number is encrypted before transmission
- A packet of data is transmitted from one site to another
- Core operating system files are stored on a boot drive
- A database contains a list of all customer addresses

7-5: A user has digitally signed an email. Which of the following would the recipient use to verify the contents of the message?
- Ephemeral key
- Public key
- Private key
- Symmetric key