Explanation
Explanation:
DNSSEC is a security extension to the regular DNS protocol and services that allows for the validation of the integrity of DNS lookups. It does not address confidentiality or availability at all. It allows for a DNS client to perform DNS lookups and validate both their origin and authority via the cryptographic signature that accompanies the DNS response.

Explanation
Cryptographic erasure is a secure method to destroy data by destroying the keys that were used to encrypt it.
This method is universally available for volume storage on IaaS and is also extremely quick. Shredding, degaussing, and demagnetizing are all physically destructive methods that would not be permitted within a cloud environment using shared resources.

Hashing involves taking a block of data and, through the use of a one-way operation, producing a fixed- size value that can be used for comparison with other data. It is used primarily for protecting data and allowing for rapid comparison when matching data values such as passwords. Labels involve looking for header information or other categorizations of data to determine its type and possible classifications.
Metadata involves looking at information attributes of the data, such as creator, application, type, and so on, in determining classification. Content analysis involves examining the actual data itself for its composition and classification level.

Explanation
The inter-cloud provider is responsible for peering with other cloud services and providers, as well as overseeing and managing federations and federated services. A cloud service administrator is responsible for testing, monitoring, and securing cloud services, as well as providing usage reporting and dealing with service problems. The cloud service integrator is responsible for connecting existing systems and services with a cloud. The cloud service business manager is responsible for overseeing the billing, auditing, and purchasing of cloud services.