$3.$ Determine if the following problems exhibit task or data parallelism:

a$)$ Using a separate thread to generate a thumbnail for each photo in a collection

$(2$ points$)$

b$)$ Transposing a matrix in parallel $(2$ points$)$

c$)$ A networked application where one thread reads from the network and another writes to the network $(2$ points$)$

d$)$ Array summation using divide and conquer strategy where data of array is divided among different threads and each thread performs summation and final result is calculated using join statement. $(2$ points$)$

e$)$ Grand Central Dispatch. It is used by Mac OS and iOS operating system to identify parallel sections in code and assign threads from thread pool to perform each task.

$(2$ points$)$