What is the strength or strong hold of a person's field of study in IT and what computer science skills can one posses that can make the person successful and distinguish the person from a layman?”...

What is the strength or strong hold of a person's field of study in IT and what computer science skills can one posses that
can make the person successful and distinguish the person from a layman?” Explain.

NB: The above question should be detailed to meet online examination standard.