AQA COMP2 2011 Jan!

Hey, could you possibly elaborate on why you think 33 bits would correspond to 8GB of memory?

Edit: Seems you are right! I understand that 64 bit does correspond to petabytes of data. I was unsure of the question when doing it, with writing 32 additional bits as being lured into a trap. Sadly did not go over it. So 2^33 would give us around 8GB, though how we were meant to calculate that without a calculator I do not know. Can I still ask, how did you know to do one extra bit?

Thanks

what was the two limitation of the assembler and the two advantages of the compiler over interpreter??

If you add 1 extra bit to the start of a string of bits, you can double the number of potential values. So just as:

0000 - 1111 equals numbers 0 - 15

and

00000 - 11111 equals numbers 0 - 31


0000... - 1111... equals numbers 0 - 4 294 967 296

and

00000... - 11111... equals numbers 0 - 8 589 934 592


When I did the exam, I was surprised that the questions were a bit non-typical. The last one was very abstract. Quite a change from previous exams!

Hope someone does post the answers............. Im sure everyone would like to know how they dont

Dont see the point, how you gonna remember your answers from almost a week ago? youll be thinking you got it right when you might've wrote something totally different.

It is out of 80.

I walked out of the exam thinking I had an A.
I had gotten A's in all the past papers which we did in exam conditions.
However AQA begged to differ and give me a C? 53/80?
I'm not convinced. Honestly...
I don't 'THINK' I did better... I KNOW I did better.

Same here, can I ask what School you are from? Totally miffed about the result, was predicted a C got an E
goingnowherefast

I recall your answers were very similar to mine, so judging from them I too think that would be strange to get a C. We didn't really do many a past paper, but I too came out of the exam thinking I had achieved a high mark. Maybe you can request a copy of the exam script or ask for a remark? Because 27 marks does seem a lot too lose. The only thing I can really think about that could've docked marks was that massive 8 mark printer (laser vs inkjet) question, but even still I'd definitely talk to someone to get it checked out. Ehh sorry for prying in like that, apologies if it's out of place, just that I'd be livid if I got a C when expecting better too.