AQA AS Computing Unit 2 Unofficial Mark Scheme.

Unofficial MS

Not entirely sure of all the questions, correct us if we're wrong, the order may be wrong and we cant remember all of the questions or question numbers. Please add to this post or tell me and i'll change it!!!

1: 4th gen b) 2nd gen --- most likely 2nd (Possibly first) because no one codes in binary, even on directly linked hardware.
2: MAR,MBR,PC,CIR,SR - All must be written in full! only 2 though...
3: PC -> MAR, MAR -> MBR, Decode (CIR)
x: Secondary Storage: 1- USB, Relatively small memory and is durable harware, Fixed Hard Drive or Magnetic Tape, Large memory capabilities, DVD-R, Read only for distributing ----update
x: LOAD 22
STORE 23
LOAD 21
STORE 22
LOAD 23
STORE 21 --- update
4: Possibilities - Inconsistent ball pattern, Restricted Movement, Cannot detect the size/position, Too many variables (depth of field and too many colours)
5: Light focus onto CCD/sensor, processed, saved onto flash in a compatible format (J -PEG, RAW, TIFF etc)
6: Allow for increased processing speed and high resolution is unnecessary to detect all the colours
6 marker: most of what to include was in the question so....
x: AND gate, NOR gate, XOR gate
x: B, B, 0
x: A and B into XOR then B and XOR output into AND gate output to Q
x: Data protection Act
x: Data Gathering (Consent hasnt been given for distribution of the data)
x: ONE OF THE FOLLOWING: Accurate and up to date, kept secure, not kept for longer than necessary. there are others as well!
x: Reason: Not a secure protocol
x: HTTPS
x: Hypertext Markup Language
x: Cascading Style Sheet
x: [write out the header]
x: font-style
x: /style
x: class
x: ul
x: /ul

(edited 10 years ago)

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Reply 1

tomrobinson

Seems correct, however for question 3, I think the second part is wrong. I think it should be CIR <- MBR

Reply 2

Randim1331

There was another HTML question, one was like what was inside the div tag, and the other was what was inside p1

Reply 3

jackykkkan

the last question about HTML

for the label like <p id=' a number' etc

i think i put whatever is next to # for that number!

is that right?

but thats not what you got there!

Reply 4

GingerCodeMan

Answer to Question 3:

MAR <- [PC]
MBR <- [Memory]_ADDRESSED
[CIR]_DECODED

Reply 5

GingerCodeMan

Original post by jackykkkan

the last question about HTML

for the label like <p id=' a number' etc

i think i put whatever is next to # for that number!

is that right?

but thats not what you got there!

It should have been "<p class = "xyz"..."

I can't remember what the class selector was called sorry

Reply 6

jackykkkan

Original post by GingerCodeMan

It should have been "<p class = "xyz"..."

I can't remember what the class selector was called sorry

Yeah i know this one!

but there was one which was like <p id='A number that we need to suggest an answer to '

on that table we need to fill in!

Reply 7

PrinceUpsb

Anyone upload copy of paper so we can see the amount of marks? Or if anyone remembers.

Reply 8

sohailkm96

Original post by jackykkkan

Yeah i know this one!

but there was one which was like <p id='A number that we need to suggest an answer to '

on that table we need to fill in!

dont think it was a number, you had to put in the identifier for the ID selector it wanted, can't remember what it was called basically, whatever the CSS had as the ID selector, you put down the name of it in there.

Reply 9

jackykkkan

Original post by sohailkm96

Yeah i know!

I was just saying for that question, they placed a number in that part of the HTML code for us to write what should be it be!

sorry! i just explained it badly!

i think it was something title or it might be the other way around!

do you think it is right?

(edited 10 years ago)

Reply 10

jonslow10

Whatever was next to the hashtag was what you had to write in!

Reply 11

PrinceUpsb

it was titlestyle wasn't it?

Reply 12

jackykkkan

for that logic gate question:

Not B . Not(NotA+NotB)

i got:

Not(B(A+B))

is that wrong?

x: AND gate, NOR gate, XOR gate

Was the second one not NAND?
I seem to remember this being the image:
http://sub.allaboutcircuits.com/images/04124.png

Reply 15

GingerCodeMan

Original post by DCharles

Was the second one not NAND?
I seem to remember this being the image:
http://sub.allaboutcircuits.com/images/04124.png

Sorry man, it was

0 0 = 1
0 1 = 0
1 0 = 0
1 1 = 0

Reply 16

DCharles

Darn, blasted memory...
Sorry for the confusion if caused :P

Reply 17

GingerCodeMan

Original post by jonslow10

Unofficial MS

Please update the first post of this thread to this:

1: 4th gen b) 2nd gen --- most likely 2nd (Possibly first) because no one codes in binary, even on directly linked hardware.
2: MAR,MBR,PC,CIR,SR - All must be written in full! only 2 though...
3: MAR <-[PC], MBR <- [Memory]Addressed, [CIR]Decoded
4: Possibilities - Inconsistent ball pattern, Restricted Movement, Cannot detect the size/position, Too many variables (depth of field and too many colours)
5: Light focus onto CCD/sensor, processed, saved onto flash in a compatible format (J -PEG, RAW, TIFF etc)
6: Allow for increased processing speed and high resolution is unnecessary to detect all the colours
6 marker: most of what to include was in the question so....
x: AND gate, NOR gate, XOR gate
x: B, B, 0
x: A and B into XOR then B and XOR output into AND gate output to Q
x: Data protection Act
x: Data must be held securely/measures must be taken against unauthorised access to personal data
x: ONE OF THE FOLLOWING: Accurate and up to date, kept secure, not kept for longer than necessary. there are others as well!
x: Reason: Not a secure protocol
x: HTTPS
x: Hypertext Markup Language
x: Cascading Style Sheet
x: RoboEddy Homepage
x: font-style
x: /style
x: class
x: ul
x: /ul

Reply 18