What is a function of service portfolio management?

Which product provides key management and a data-at-rest encryption mechanism for private, public, and
hybrid clouds?

An organization requires double the processing capacity for a specific duration to handle increased workload.
For the remaining period, the organization might want to release the idle resources to save costs. The workload variations may be seasonal or transient.
Which cloud characteristics enables the consumer to handle such variations in workloads and IT resource requirements?

An organization deployed a storage system that is configured with erasure coding. The erasure coding technique divides data into five data segments and two coding segments.
What is the maximum number of drive failures supported in the storage system?

Which method optimizes network performance by distributing network traffic across the shared bandwidth of all the ISLs?