Please solve aThe following parameters are defined for a switching network:

$N=4,=$ number of hops between two given end systems

$L=6000=$ message length in bits

$B=$ data rate, in bits per second $($bps$),$ on all links

$P=1080=$ fixed packet size, in bits

$H=80=$ overhead $($header$)$ bits per packet

$S=0\mathrm{.}2=$ call setup time $($circuit switching or virtual circuit$)$ in seconds

$T=0\mathrm{.}02=$ call teardown time $($circuit switching or virtual circuit$)$ in seconds

$D=0\mathrm{.}001=$ propagation delay per hop in seconds

Question $1$

If $L$ is not the same as above but is instead $L=13000$ bits $($all other parameters the same$),$ how many packets are required?

Question $2$

times. Ignore processing delay at the nodes. Compute the end$-$to$-$end delay to fully and properly complete virtual circuit packet switching.

Question $3$

datagram packet switching. Use setup time $=200ms.$ and teardown time $=20ms.$ You must include both setup and teardown time.