In Ukrainian is implied, if you put it there it would sound foreign. But, to be pedantic, you could use "to be" in some contexts to emphasize, e.g. "But you ARE a student" "Але ти є студент".

When you have a positive "A is B" sentence and BOTH A and B are nouns, dash is required by Ukrainian punctuation conventions (except in come colloquial-style sentences and some special cases):

• Моя бабуся — письменниця.
• Мій друг — водій.

No dash is required when one of these is a pronoun (though one might still use a dash for emphasis):

• Це моя машина.
• Він водій.

Same in questions and negative sentences. No dash is usually there:

• Гаррі студент?
• Моя сестра не вчителька.

good for you for trying out all these languages! i've heard Norwegian is really tough