Edexcel GCSE Computer Science (1CP2) Exam Questions

• B Control unit (1)
• The only correct answer is B. The correct answer is control unit.
• A is not correct because the arithmetic logic unit performs arithmetic and logical operations, not decoding
• C is not correct because main memory stores instructions and data, not decoding
• D is not correct because a register holds data or addresses temporarily, not decoding

• A Executes the line (1)
• The only correct answer is A. The correct answer is that the interpreter executes the line.
• B is not correct because an interpreter does not produce object code; that is what a compiler does
• C is not correct because an interpreter does not save the translated code to a file
• D is not correct because the interpreter executes the current line before it translates the next line

• C E-waste (1)
• The only correct answer is C. The correct answer is e-waste.
• A is not correct because a carbon footprint is the total greenhouse gases produced by an activity
• B is not correct because energy consumption is the amount of energy used
• D is not correct because a replacement cycle is the time between buying a device and buying its replacement

Award one mark for:

• The number of bits used per sample (1)

Allow bits per sample

Allow the number of bits used to record/store each sample

Do not accept the number of samples taken per second (sample rate)

Do not accept the number of bits used to store the whole sound file

Do not accept the number of levels/amplitude values a sample can take

Award one mark for any of the following:

• More files/data can be stored (in the same storage space) (1)
• The files take up less storage space (1)
• The backup is quicker/faster to complete (1)
• Less data needs to be transferred to the backup device (1)

Do not accept 'makes the files more secure' or 'encrypts the files'.

Award one mark for any of the following:

• Bits per second (bps) (1)
• Kilobits per second (kbps) (1)
• Megabits per second (Mbps) (1)
• Gigabits per second (Gbps) (1)

Allow bits/second, b/s, bit per second, bits per sec.

Do not accept bits on its own.

Do not accept bytes per second.

Award one mark for any of the following up to a maximum of two marks:

• Reduces the file size / uses less storage space (1)
• Takes less time to upload/download/send (1)
• Uses less bandwidth / reduces the amount of data transferred (1)
• The file is more likely to fit within an email attachment size limit (1)
• Reduces the amount of storage needed for backups / more files can be stored on backup media (1)

Do not award both 'reduces the file size' and 'uses less storage space' as two separate benefits.

Do not award both 'takes less time to send' and 'uses less bandwidth' as two separate benefits.

Do not accept 'it is compressed' on its own.

Do not accept 'it makes the file easier to send' unless a benefit such as a smaller file or less time is given.

Do not accept 'better quality'.

Award up to two marks for a linked explanation such as:

• Only staff with the key can open the cabinet (1) so unauthorised people cannot touch/steal the servers (1)
• Someone cannot disconnect/remove a server (1) because unauthorised people cannot open the cabinet (1)
• The servers are protected from damage (1) because the cabinet is locked so people cannot reach them (1)

For both marks, the expansion must follow/associate with the statement.

Accept 'keeps the servers safe from damage' as the point (1); a linked reason about the locked cabinet is needed for the second mark.

Do not accept answers about software protection such as anti-malware or firewalls; these are not physical security.

Do not accept 'it stops hackers' without saying how the locked cabinet prevents physical access.

Do not accept 'it keeps the servers safe' on its own unless it names what they are safe from (damage/theft/tampering) as the point.

Do not accept an answer that only repeats the question, e.g. 'the servers are secure because they are in a locked cabinet'.

Award up to two marks for a linked explanation such as:

• Consent is required by data protection legislation (1) so the gym could be fined/prosecuted if it collects data without consent (1)
• The member has a choice about whether their data is collected (1) because they can refuse/say no (1)
• The member can be told what their data will be used for (1) so they know what they are agreeing to (1)
• The member has the right to withdraw consent (1) so the gym must stop using the data if the member changes their mind (1)
• The gym builds trust with members (1) because members know their data is being handled properly (1)

For both marks, the expansion must follow/associate with the statement.

Allow 'the member has a right to privacy' as a statement (1) if it is expanded with a reason such as the member controls who can see their data (1).

Do not accept 'the gym needs it' or 'it is the law/a legal requirement' without expansion as to what the law requires or what happens if it is broken.

Do not accept 'so the gym can use the data' without saying how consent protects the member or meets the law.

Do not accept answers about keeping data accurate or secure; these are data protection requirements but they are not about consent.

Award one mark for each of:

• − (negative sign) (1)
• 53 (1)

The correct answer is −53