Finally I passes this ugly test

Score :659 or 73%
its been ultra hard but I can say its good to finally pass this test,
Here a sample, of some of what I have been through:
1st time: Failed, had no idea that there is as limit to ISDN connections

just remember 18 000 feet
2nd time:close but no cigar 527 failed by one question I changed in the end

3rd time:
you will not belive what happened next 
Power fail or as in South Africa we call it :
LOAD SHEDDING just as I clicked Begin test

What are the chances of that happening?
much more than winning the lotto probebly!
4th time :freebie from last time Wrote, got 659 Bliss

To anybody who is about to write I can advise you such:
Dont change your answers no matter how hard it is (easier said than done).

Have more than one textbook to learn from (I used Exam Cram 2 ISBN no:078973254

plus any other official textbooks from the university/college you are doing
Get preplogic 15 minute guide and techexams.net technotes and print the 15 minute one to refer to just before the exam.
one last thing drink a can of energy drink just before you write

and most importantly:
DONT GIVE UP EVER !!!!!!!!!
I know I should have given up after the second time but I dident and With my own inisiative I passed and passed well!
So remember, Whatever you do, Dont give up, no matter how expensive the test is in your country.
just try again,
and you will pass without a doubt.