Please, I want a correct and detailed solution to all paragraphsExplain computer$-$system architecture with suitable examples. $(2$ Marks CLO$1\mathrm{.}1)$

Define system calls. Discuss different types of system calls $(1$ Mark CLO$1\mathrm{.}2)$

Elaborate threading issues with suitable example. $(2$ Marks CLO $2\mathrm{.}1)$