Explanation
A major difference between IPsec and other protocols such as TLS is that IPsec operates at the Internet network layer rather than the application layer, allowing for complete end-to-end encryption of all communications and traffic.

Explanation
The guidelines from ASHRAE establish 64.4-80.6degF (18-27degC) as the optimal temperature for a data center.

Explanation
According to "The NIST Definition of Cloud Computing," in IaaS, "the capability provided to the consumer is to provision processing, storage, networks, and other fundamental computing resources where the consumer is able to deploy and run arbitrary software, which can include operating systems and applications. The consumer does not manage or control the underlying cloud infrastructure but has control over operating systems, storage, and deployed applications; and possibly limited control of select networking components (e.g., host firewalls).

Explanation/Reference:
Explanation:
The cloud service administrator is responsible for testing cloud services, monitoring services, administering security for services, providing usage reports on cloud services, and addressing problem reports