Answer with good high level explanation please

Consider the RAID$5$ system depicted in the diagram below:

$1$

$2$

$3$

$4$

$5$

a$)$ Each strip or block contains data and each parity block is computed as the XOR of the

strips within that stripe $($or row$).$ Assume that disk $3$ fails and is later replaced with a

new disk. Once disk $3$ is replaced, it must be repopulated by writing all of the required

data and parity. Show how Strip $2$ on the new disk $3$ can be computed.

Strip $2-=$

b$)$ If all five disks are operating properly, can strip$6$ and strip$14$ be written in parallel on

this system? Explain why or why not.