Can the postgraduate entrance examination for electronic information engineering only be aimed at academic graduate students? Or is it both academic and professional?

Both can be, depending on the school's enrollment plan;

There are many academic schools, and some professional schools may not have enrollment plans.

Professional masters require applicants to have a certain number of years of work experience. Most professional masters also require on-the-job employees to obtain the consent of their units or corresponding management departments, and some even require their units to recommend them.