Paper1 and Paper 2 - J277

Which of the following best explains why more cache memory improves CPU performance?

• It increases the clock speed
• It reduces the need for secondary storage
• It stores frequently accessed instructions closer to the CPU
• It enables multicore parallel processing

Categorise the following as Environmental Impact, Legal Issue, or Ethical Concern

Groups:

(a) Environmental

,

(b) Legal

,

(c) Ethical

• Software piracy

• Hacking into a private network

• CO₂ emissions from data centres

• E-waste in landfills

• Employee monitoring at work

A system requires near-instant input response times and has limited power and memory. Which type of system is most appropriate?

• General-purpose computer
• Embedded system
• Server farm
• Mainframe system

Which scenario would benefit most from lossless compression?

• Reducing the size of an archived audio file
• Streaming music over the internet
• Saving high-resolution JPEG images
• Compressing executable program files

What is the role of the Control Unit in the Fetch-Decode-Execute cycle?

• To carry out calculations and logical comparisons
• To execute the program code
• To manage signals within the CPU and coordinate operations
• To store results of operations

Why does increasing the number of cores not always result in faster performance?

• Some software is not written to take advantage of multiple cores
• Each core must share the same cache size
• More cores increase latency
• It reduces clock speed automatically

Reorder the stages of dealing with e-waste responsibly

• • Device sent to certified recycler

• User discards the electronic device

• Remaining materials are recycled or disposed properly

• Hazardous waste is handled safely

• Valuable parts and materials are extracted

What impact does higher clock speed have on the CPU?

• It allows more instructions to be processed per second
• It increases RAM size
• It increases storage capacity
• It enables multicore processing

Which of the following is NOT a factor when choosing secondary storage?

• Cost
• Capacity
• Speed
• CPU speed

Which device is LEAST likely to contain an embedded system?

• Smartphone
• Microwave
• Desktop PC
• Washing machine