OCR Computing F451 June 2015

Original post by TheMathsMan

Anyone doing S1 maths on friday as well ?

Yeah, Edexcel?

Reply 181

Original post by ryanroks1

Yeah, Edexcel?

Yeah .. Hopefully the computing revision doesn't hold me back from getting the grade I want ... I only need a minimum of 65 UMS which should be 50 marks or so ... that's predicted though ... busy week next week :P

Reply 182

Original post by TheMathsMan

Yeah .. Hopefully the computing revision doesn't hold me back from getting the grade I want ... I only need a minimum of 65 UMS which should be 50 marks or so ... that's predicted though ... busy week next week :P

Yeah, I have an exam every single day :frown:

I wanted an A in maths but given how hard C1 and C2 were, I'm now going to struggle to get a B.

Reply 183

Original post by ryanroks1

Yeah, I have an exam every single day :frown:

I wanted an A in maths but given how hard C1 and C2 were, I'm now going to struggle to get a B.

Oooo good luck ... everyday .. gunna be tough but try your best
I found C1 amazing .. but obviously that's just me
C2 wasn't really my cup of tea, I made mistakes and quite a few of them
If you want ... you can tell me your predicted marks .. and I'll let you know how much you need for a B/A if you don't know it already :smile:

Reply 184

Courtneyjso

0 1 0 1 0 1 0 1 even parity
1 1 1 0 1 0 0 1 odd parity
1 1 0 1 0 1 0 1 odd parity
0 1 1 1 1 0 0 1 odd parity
e e e o e e e e
basically you check each byte for the number of 1s, if there is an even umber of 1s it is even parity, if it is an odd number of ones then it is odd parity, the parity should be the same so the odd one out shows where the error is, and if you check where these lines cross, in my case the first row in the fourth column, that is the bit that has been incorrectly transmitted

Reply 185

Original post by TheMathsMan

Oooo good luck ... everyday .. gunna be tough but try your best
I found C1 amazing .. but obviously that's just me
C2 wasn't really my cup of tea, I made mistakes and quite a few of them
If you want ... you can tell me your predicted marks .. and I'll let you know how much you need for a B/A if you don't know it already :smile:

Judging by Arsey's mark schemes, I think I got around 54 in C1 and 59 in C2.

Reply 186

Original post by ryanroks1

Judging by Arsey's mark schemes, I think I got around 54 in C1 and 59 in C2.

For a B in S1 you would need a minimum of 49 marks
and for an A you would need a minimum of 70 marks ...
You can still get the A ... just a little bit of hard work will get you there
Short term pain , long term gain ;P

Reply 187

Original post by England97

Any predictions on the 8 mark question

I reckon there'll be a cheeky maintenance,installation or evaluation question from SDLC ...

Reply 188

Original post by TheMathsMan

For a B in S1 you would need a minimum of 49 marks
and for an A you would need a minimum of 70 marks ...
You can still get the A ... just a little bit of hard work will get you there
Short term pain , long term gain ;P

Thanks

Reply 189

reallytallmidget

Original post by TheMathsMan

I reckon there'll be a cheeky maintenance,installation or evaluation question from SDLC ...

yep, i agree with this. there has been 8 markers on the design stage and the analysis stage and hardly anything on maintenance or installation or evaluation, and they all have enough to be 8 markers in them

Reply 190

gm12345

I got 50 in c2 40 c1
Hiw ow many marks for c &ab thanks

Reply 191

An Ignorant Duck

Original post by reallytallmidget

yep, i agree with this. there has been 8 markers on the design stage and the analysis stage and hardly anything on maintenance or installation or evaluation, and they all have enough to be 8
markers in them

Really though? Like, what is there to say about maintenance other than programmers fixing bugs?

Reply 192

0x2a

What do we need to know for the Data protection act?

Reply 193

Courtneyjso

Original post by An Ignorant Duck

Really though? Like, what is there to say about maintenance other than programmers fixing bugs?

You could say the documentation is also updated

Reply 194

BrandonS101

Original post by 0x2a

What do we need to know for the Data protection act?

there has been a question to do with data protection before which you needed to basically know the 8 principles

Reply 195

Matt Burgundy

3

Original post by Courtneyjso

0 1 0 1 0 1 0 1 even parity
1 1 1 0 1 0 0 1 odd parity
1 1 0 1 0 1 0 1 odd parity
0 1 1 1 1 0 0 1 odd parity
e e e o e e e e
basically you check each byte for the number of 1s, if there is an even umber of 1s it is even parity, if it is an odd number of ones then it is odd parity, the parity should be the same so the odd one out shows where the error is, and if you check where these lines cross, in my case the first row in the fourth column, that is the bit that has been incorrectly transmitted

Thanks that's really useful!
: )

Reply 196

Ec0n

Original post by TheMathsMan

Anyone doing S1 maths on friday as well ?

Yeah, + Chem unit 2 tommorow; have 4 exams this week :/. Not really looking forward to S1, probably my weakest module out of all my subjects but I seem to improving, hopefully edexcel don't screw us over like C1 + C2.

Reply 197

Original post by reallytallmidget

yep, i agree with this. there has been 8 markers on the design stage and the analysis stage and hardly anything on maintenance or installation or evaluation, and they all have enough to be 8 markers in them

Yeah I only though of that cause we got for installation
1.Direct changeover
2.Pilot
3.Parallel
4.Phased
So two for each one = 8 marks
or for Maintenance 3 marks on User manuals 3 marks on Technical manuals even 2 marks for prototyping = 8 marks
or for evaluation
maybe 6 marks on each type of testing
1.Black Box
2.White Box
3.Alpha and Beta
4. Acceptance
2 more marks on the elaboration of the analyst getting paid for this stage etc.
Seems like it makes sense that It may be there. :P

Reply 198