The syndrome calculated at the receiver is found to be equal to $1.$ In

this case:

$($a$)$ Only the first bit is in error $($b$)$ the received frame is in error $($c$)$

only one bit is in error $($d$)$ neither a$,$ b or c

$12\mathrm{.}3($a$)$

$($b$))$

$($c$)$

$($d$)$

$13)$ If a Hamming code is used to protect the character of $16$ bits, the

number of redundant bits needed will be:

$($a$)5$ bit

$($b$)4$ bits

$($c$)3$ bits

$($d$)2$ bit

$13$

$($a$)$

$($b$)$

$($c$)$

$($d$)$

$14)$ In Selective$-$Reject ARQ, if the frame length is $1000$ bits, the

BER is $105$ and the propagation delay is $10$ times the transmission

time, what will be the minimum window size for a line utilisation of

$75\%?$

$($a$)1000$

$($b$)16($c$)99$

$($d$)500$

$14$

$($a$)$

$($b$)$

$($c$)$

$($d$)$