11. Each of the stripes on a RAID 5 system contains five blocks: four data blocks along with the corresponding parity block. The parity block is computed as the cumulative XOR of the 4 data blocks. Blocks are also called strips. There are no strips or parity blocks currently in memory. For the purposes of this problem, assume that each strip or block contains only 4 bits. a) (3) The following information is given: strip4 =1110, strip 5=1001, strip 6=0101, strip7 =0111 and P47=0101. Strip6 is overwritten with the new pattern 0110 . This also requires overwriting the parity block P4-7 with a new pattern. What is the pattern for the new parity block P4-7? b) (5) Strip15 is overwritten with the pattern 0110= Nstrip15. This also requires overwriting the parity block P12-15 with a new pattern NP12-15. Can the new pattern NP12-15 be determined based just on the following information: strip12 =0001, strip13 =1111, strip 15=0111 and P1215=0011. If not, explain why not. If yes, show the 4-bit pattern for NP12-15 11. Each of the stripes on a RAID 5 system contains five blocks: four data blocks along with the corresponding parity block. The parity block is computed as the cumulative XOR of the 4 data blocks. Blocks are also called strips. There are no strips or parity blocks currently in memory. For the purposes of this problem, assume that each strip or block contains only 4 bits. a) (3) The following information is given: strip4 =1110, strip 5=1001, strip 6=0101, strip7 =0111 and P47=0101. Strip6 is overwritten with the new pattern 0110 . This also requires overwriting the parity block P4-7 with a new pattern. What is the pattern for the new parity block P4-7? b) (5) Strip15 is overwritten with the pattern 0110= Nstrip15. This also requires overwriting the parity block P12-15 with a new pattern NP12-15. Can the new pattern NP12-15 be determined based just on the following information: strip12 =0001, strip13 =1111, strip 15=0111 and P1215=0011. If not, explain why not. If yes, show the 4-bit pattern for NP12-15