Which of the following security measures encrypts data at rest and in transit?
Correct answer: D. encryption
- A. firewall
- B. data loss prevention
- C. access control list
- D. encryption
Explanation
Encryption scrambles data using a cryptographic key, making it unreadable to anyone who doesn't possess the decryption key. This protects data confidentiality both at rest (when stored on a device) and in transit (when being transmitted over a network).
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Networking covers LAN, MAN, WAN and wireless networks, network topologies, transmission media, devices such as switches, routers and modems, and the OSI and TCP/IP models. Internet concepts include IP addresses, DNS, URLs, web browsers, email, protocols such as HTTP, HTTPS, FTP and SMTP, and basic network security.
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