C appends the low-value hexadecimal byte ____ as the end-of-file (EOF) sentinel when a file is closed.

You are troubleshooting a mobile device with no sound output from the headset or external speakers. Which of the following steps should you take first?

a. Verify the physical volume control is turned up. b. Reset the device to factory defaults. c. Perform a manual OS update. d. Close any unused apps.

The company you work for has decided to outsource its email system to a SaaS provider. Which of the following should be implemented to help prevent the disclosure of intellectual property in the new system?

A. DNSSEC B. DLP C. IPsec D. NIDS