Circuit capacity on a backbone network will be improved by:

Question $2$Select one:

a$.$

replacing a switched circuit backbone with a shared circuit backbone

b$.$

oing from $100$Base$-$T Ethernet to $10$Base$-$T Ethernet

c$.$

going from $100$Base$-$T Ethernet to gigabit Ethernet

d$.$

providing a slower circuit to the server

e$.$

adding no additional circuits alongside heavily used ones