List and explain seven $(7)$ common hardware failures. $(14$ Marks$)$

$1\mathrm{.}2$ List and explain seven $(7)$ common network failures. $(14$ Marks$)$

$1\mathrm{.}3$ List at least thirteen $(13)$ ways to identify network intermittent connectivity problems. $(13$ Marks$)$

$1\mathrm{.}4$ List and explain the purpose of at least nine $(9)$ common tools found in the toolbox of a technician.