Which RAID level provides fault tolerance by striping data and parity information across multiple drives, allowing for recovery in the event of a single drive failure?

a$.$ RAID $1$

b$.$ RAID $10$

c$.$ RAID $0$

d$.$ RAID $5$

What is the expected throughout for sequential reads in a RAID $1$ configuration with n disks, assuming each disk has a sequential read throughout of S MB$/$s$?$

a$.($n$.$s$)/2$ MB$/$s

b$.2$n$$s MB$/$s

c$.($n$.$s$)/4$ MB$/$s

d$.$ n$$s MB$/$s

Which caching method, discussed in the lecture, poses a risk of data loss in case of a power outage?

a$.$ Random caching

b$.$ Write$-$though caching

c$.$ Right$-$back caching

d$.$ Sequential caching

In the context of file systems, what is the purpose of the $$unlink$$ function?

a$.$ It modifies the access permissions of a file.

b$.$ It deletes a directory and all its contents recursively.

c$.$ It removes a file$$s data from disk but retinas its inode.

d$.$ It creates a new link to a file.