I am in the 5th semester and I want to do my masters in satellite communication at Australia's best university.what is the prefered exam?

Why study in Australia ??

Australia promotes innovation, creativity and independent thinking throughout its universities. As an international student in Australia, you can expect to live, grow and learn in a young, friendly country full of opportunities.

Universities

There is a total of 43 accredited universities in Australia comprising 40 Australian universities, two international universities, and a smaller private specialty university. Higher education courses and qualifications are also offered by many non-university providers in the higher education sector.

Tuition and Program Duration

International students must pay tuition fees before visa . Typical tuition for master’s degrees is A$15,000 to A$36,000 per year depending upon the university.

Masters degree programs take 1-2 years to complete. The course of study is usually two years after a bachelor degree; however, a master’s degree can be obtained in one year if the student’s bachelor degree was obtained with honors but that totally depends on your profile and university as well.

Intakes

Australia generally has two intakes i.e. February and July, with few Universities offering multiple intake in September & November. It is suggested that you should start making applications ideally 7-8 months prior to the intake. University generally takes around 4-6 weeks to process the applications.

VISA Requirements

You must be able to prove to the Department of Immigration and Border Protection (DIBP) that you meet the following key Australian student visa requirements:

• Genuine Temporary Entrant (GTE) requirement.
• Financial requirements.
• English proficiency requirements.
• Health and character requirements.

University of Sydney is a decent college

https://sydney.edu.au/courses/units-of-study/2018/elec/elec5510.html