Determine whether each statement is true or false.

Point$-$to$-$point is the transmission mode used

when only two computers are interconnected.

$($t$)$

$($f$)x$

The number of links required to connect $8$ com$-$

puters in a star topology would be less than that

used to connect the same $8$ computers in a bus

topology.

$($t$)$

$($f$)x$

In a half$-$duplex radio link, it won't be possible

for both parties to speak to each other simulta$-$

neously.

$($t$)$

$($f$)x$

A mesh network will contain at least one link set

in a point$-$to$-$point configuration.

$($t$)$

$($f$)x$

A star network will always contain at least one

link set in a point$-$to$-$multipoint configuration.

$($t$)$

$($f$)x$

The number of links required to connect $10$ com$-$

puters in a ring network is equal to the number of

links required to connect the same $10$ computers

in a star topology.

$($t$)$

$($f$)x$

A mesh topology solves the problem of security

at the expense of average communication speed.

$($t$)$

$($f$)x$

A star network behaves better than a ring net$-$

work in case of link failure.

$($t$)$

$($f$)x$

$3$ Short Response Questions

Answer each of the following questions.

If the topology of a network interconnecting $10$

computers was changed from mesh to star, how

many links would be left over? How many ports

will be left over?

Four computers A$,$ B$,$ C and D are connected in

a ring topology. If link $BC$ fails, would it still be

possible for A to communicate with D$?$ Explain.

If five public telephony switching offices are to

be interconnected, would you recommend a star

network or a mesh network? Explain.