Explanation
Tokenization involves the replacement of sensitive data fields with key or token values, which can ultimately be mapped back to the original, sensitive data values. Masking refers to the overall approach to covering sensitive data, and anonymization is a type of masking, where indirect identifiers are removed from a data set to prevent the mapping back of data to an individual. Encryption refers to the overall process of protecting data via key pairs and protecting confidentiality.

Explanation/Reference:
Explanation:
With multitenancy, where different cloud customers all share the same physical systems and networks, data classification becomes even more important to ensure that the appropriate security controls are applied immediately to prevent any potential leakage or exposure to other customers. Portability refers to the ability to move easily from one cloud provider to another. Interoperability refers to the ability to reuse components and services for different uses. Reversibility refers to the ability of the cloud customer to quickly and completely remove all data and services from a cloud provider and to verify the removal.

Explanation/Reference:
Explanation:
With SaaS providing a fully functioning application that is managed and maintained by the cloud provider, cloud customers incur the least amount of support responsibilities themselves of any service category.

Explanation/Reference:
Explanation:
Rapid elasticity allows a cloud environment to automatically add or remove resources to or from a system or application based on its current demands. Whereas a traditional data center model would require standby hardware and substantial effort to add resources in response to load increases, a cloud environment can easily and rapidly expand to meet resources demands, so long as the application is properly implemented for it.

Explanation/Reference:
Explanation:
The Dynamic Host Configuration Protocol (DHCP) automatically configures network settings for a host so that these settings do not need to be configured on the host statically. Given the rapid and programmatic provisioning of resources within a cloud environment, this capability is crucial to cloud operations. Both DNS and its security-integrity extension DNSSEC provide name resolution to IP addresses, but neither is used for the configuration of network settings on a host. DCOM refers to the Distributed Component Object Model, which was developed by Microsoft as a means to request services across a network, and is not used for network configurations at all.