Kwan, a fifth$-$grade teacher, has been learning about computers but does not know much about networking. He found a hub in the supply closet and decided to create a small network in his classroom consisting of a file$/$application server, $10$ relatively new computers, and a printer. The students often complain that the computers are slow, but one student blames it on the network. What can Kwan do to eliminate complaints?

Question $13$ options:

a$)$

Upgrade to a better router

b$)$

Use NICs that support $1$ Gbps

c$)$

Upgrade to more powerful PCs

d$)$

Replace the hub with a switch