Final answer:
The question appears to involve strategies for managing errors in storage devices, with a) 'sector sparing' being a method used to redirect data from faulty sectors to spare ones. Without proper context, the term b) 'forwarding' is unclear.
Step-by-step explanation:
The scheme mentioned in the question is likely related to strategies for managing errors or data integrity in storage devices such as hard drives. However, based on the incomplete context provided, we'll discuss the two likely correct options which are: a) sector sparing and b) forwarding.
Sector Sparing
Sector sparing is a technique used in hard drives and solid-state drives to manage defective sectors.
When a sector on a storage device is found to be unreliable, the drive's firmware will mark it as bad and will "spare" it by redirecting data to be written to a spare sector.
This process is typically managed by the drive's firmware and is transparent to the user. This helps in maintaining the integrity of the data stored on the device.
Forwarding
The term forwarding is not commonly used in this context. It could possibly be a typo or an incorrect reference.
Instead, the term often associated with error management in storage systems is "forward error correction" (FEC), which is a technique used for controlling errors in data transmission over unreliable or noisy communication channels.
Given that the question is not well-defined, sector sparing seems like the most fitting option between the choices provided.
However, without additional context or clarification on the second term, providing an authoritative answer is challenging.