$2.(\backslash (4\backslash$times $1\mathrm{.}5\backslash )$ points$)$ Explain if the following problems exhibit task or data parallelism:

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

$-$ Transposing a matrix in parallel

$-$ A networked application where one thread reads from the network and another writes to the network

$-$ The Grand Central Dispatch system