Yes, each question is worth the same on the exam. No you do not get partial marks for any question.

Each question is either correct or incorrect. There are 70 questions on the exam, and you need to get 65% on the exam to get your certificate.

65% of 70 questions is 45.5 and each question is worth about 1.44%, so you need to get 46 questions correct.

Also, with each question worth the same amount a question that takes five minutes to answer is worth the same as a question which takes one minute to answer.

That said

you should not strive for only 65%, but 100% if possible. If you try for only 65% then when you surpass your quota of incorrect answers you are out of luck.

However if you try for 90% or more and you surpass your quota you can still get your certification.