1Ai Answer
All the different characters a computer can represent (in binary)
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1Aii answer
256
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1Aiv answer
Unicode
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1B answer
01001010
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1C answer
1 mark for adding 1 to J: binary 01001011 // converting J to
hexadecimal and adding 1
1 mark for answer 4B
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hexadecimal and adding 1
1 mark for answer 4B
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1C answer
1 mark for left
1 mark for 3 places
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1 mark for 3 places
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2 answer
Diagnosis
Storage
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- Search records faster
- Identify range of possibilities based on symptoms
- Identify patterns
- More accurate/automated/AI equipment
- May miss some symptoms, or suggest incorrect results
- AI/Automated surgery e.g. can control from another country …access to specialists who are not local
- Technology may be subject to hacking
- Error in software could have fatal consequences
- May have little human interaction
Storage
- Centralised storage
- All medical people can access all information about patients from all people involved in care
- Concerns over privacy and security of communication of data e.g. if central storage is accessed personal information may be leaked
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3ai answer
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3aii answer
1 mark for register e.g. accumulator
1 mark for description e.g. stores the result of arithmetic
operations
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1 mark for description e.g. stores the result of arithmetic
operations
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3b answer
1 mark per bullet
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- faster/higher clock speed
- 3.2GHz will run more Fetch-Execute (F-E) cycles per second
- …therefore the more instructions can be executed per second // by calculation
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4 answer
1 mark for each completed term
Embedded systems have limited functions. They are
often built into a larger machine. Two examples of
embedded systems are a washing machine and
automated lights in a car.
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Embedded systems have limited functions. They are
often built into a larger machine. Two examples of
embedded systems are a washing machine and
automated lights in a car.
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5A answer
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5Bi answer
1 mark for working, 1 mark for answer
1000*3
= 3000 images
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1000*3
= 3000 images
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5bii answer
1 mark for suitable type i.e. solid state // magnetic
1 mark per bullet to justification to max 2
solid state e.g.:
magnetic e.g.:
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1 mark per bullet to justification to max 2
solid state e.g.:
- Large enough capacity
- Can move computer without damaging storage
- Faster access speeds
magnetic e.g.:
- Largest capacity
- Do not need to move computer so moving parts do not matter
- More reliable long-term
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5biii answer
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5ci answer
1 mark per bullet to max 2
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- Reduces the file size…
- …takes up less space on the server
- Faster upload to server
- Faster download for users
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5cii answer
1 mark for lossy
1 mark per bullet to max 2
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- Lossy will most likely reduce the file size by a large amount than lossless
- Lossy will remove data that is not noticeable // the changes will allow for further reduction without the user noticing
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5Di answer
Copyright designs and patents act
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6a answer
LAN // Local area network
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6bi answer
1 mark per bullet
Max 4 for similarities, max 4 for differences
Similarities:
Differences:
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Max 4 for similarities, max 4 for differences
Similarities:
- They both connect devices
- …they receive data from the devices
- …they determine the correct destination for the data
- …they transmit the data to its destination
Differences:
- A switch uses MAC addresses
- A router uses IPs
- A switch corrects nodes/computers
- A router connects networks/Internet
- A router stores the addresses of devices attached…
- …a switch records the addresses as they are accessed // a switch has to look for correct address before sending
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6b answer
1 mark per bullet
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- Clearly labelled switch
- 2 laptops, 4 phones, 2 TVs
- All devices connected to switch and nothing else
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6c answer
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7a answer
1 mark per bullet to max 3
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- Takes less time to read/access a file because the data/files/pages are contiguous
- …. so it does not need to move as far to read the next piece of data/file/page
- …because it is in the next memory location
- Takes less time to save new data/files because there is larger free space together
- …so it does not need to split the data/file
- … and can store them in contiguous spaces
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7b answer
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7ci answer
1 mark per bullet to max 2
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- Free of charge
- They can adapt it / add features
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7cii answer
1 mark per bullet to max 2
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- She can charge customers // She can earn a profit
- She can restrict what users can do /// users can't edit it
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7di answer
1 mark per bullet to max 3
e.g.
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e.g.
- She can access the program from anywhere
- … does not need to carry a storage device with her
- Security/backup is (likely) managed for her
- …does not need to manually backup his work
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7dii answer
1 mark per bullet to max 3
e.g.
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e.g.
- If there is no Internet access he cannot access his work
- Transmission may not be secure
- …his work could be intercepted
- Security is out of his control
- …it may not be backed up/kept safe
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