$18.$ A network with data bitrate of $400$ Mbps and $40$ stations is divided into two equal networks

by a bridge. The bit rate for each station assuming that the traffic is going through each

station is approximately

a$.10$ Mbps

b$.21$ Mbps

c$.40$ Mbps

d$22.$ A LAN consists of ten devices connected in a star topology using a switch. The link speed

that connects the devices to the switch is the standard Ethernet $10$ Mbps$.$ The number of

cables is ten. The average bit rate for each station is

a$.20$ Mbps

b$.1$ Mbps

c$.5$ Mbps

d$.0\mathrm{.}909$ Mbps

$24.$ Your laptop sent an enquiry to YouTube server so you can watch a video. The Internet

requires $10$ msec to deliver the message. YouTube has placed your enquiry on a queue and

responded to your enquiry after $30$ msec. The response needs $10$ msec to travel from

YouTube to your computer. The transit time is

a$.10$msec

b$.20$msec

c$.30$msec

d$.40$msec

e$.60$msec

$36.$ Suppose that a group of $20$ stations are serviced by an Ethernet LAN. The $20$ stations are

connected to a $100$Mbps Ethernet bridge $($five LANS, four stations for each$).$ How much

bandwidth is available to each station? Bridge is taken into consideration.

a$.100$ Mbps

b$.10$ Mbps

c$.5$ Mbps

d$.20$ Mbps

$38.$ Suppose that a group of $20$ stations are serviced by an Ethernet LAN. The $20$ stations are

connected to a $100$Mbps Ethernet switch. How much bandwi

b$.20$ Mbps

c$.5$ Mbps

d$.25$ Mbps

e$.$ None of the above

$80.$ Suppose that a group of $20$ stations are serviced by an Ethernet LAN. The $20$ stations are

connected to a $100$Mbps Ethernet bridge $($four LANS, $5$ stations for each$).$ How much

bandwidth is available to each station?

a$.100$ Mbps

b$.16\mathrm{.}7$ Mbps

c$.5$ Mbps

d$.25$ Mbps

$82.$ For $100$ devices in a LAN network, what is the number of cable links required for a ring

topology?

a$.100$ cables

b$.1$ cable

c$.9900$ cables

d$.4950$ cables

e$.50$ cables