Question $2(25$ marks$)$

a$)$ LINUX is an open source operating system. Its file system allows

users to create directories and files under the parent directory. You

should clearly outline the steps for the questions below:

i$)$ Describe the steps to create a new directory and a new file

that carries your name.

ii$)$ After step $($i$),$ how do you ensure the file can not be read,

written and accessed by others except the owner of the

file? What is sticky bit?

iii$)$ Finally, create a shell script named "mybatch" and make it

executable so that it can perform the step $($i$)$ and $($ii$)$ above

automatically. You need to clearly list down the Linux

commands for this question.

b$)$ Consider a network that has $500$ network devices, where each

element has an average of three interfaces and each interface is

monitored for eight characteristics. What would be the total amount of

traffic per day if each of the characteristics generates an average of $8$

bytes of data and estimated $60$ bytes of protocol overhead? Given that

the polling interval per hour is $360$ and one day is $24$ hours.