Computing Systems and Ethical, legal and environmental impacts.

Computer systems consist of Hardware and (a)   .

Which type of concern is ensuring public safety classed as?

(a)  

Describe the advantages of Cloud storage. (multiple)

• Access can be granted to a user so they can remotely access another person's data

• Users can only access files if they are able to connect to the internet

• Cloud storage services back up data for users

State components of the central processing unit (CPU)?

• Registers, read only memory (ROM) and cache

• Resisters, read only memory (ROM) and arithmetic logic unit (ALU)

• Registers, cache and arithmetic logic unit (ALU)

Which one of these is not a common CPU components?

• control unit (CU)

• registers

• cache

• RAM

• clock

Define ROM

(a)  

State the register that holds the address of the next instruction to be fetched from memory?

• Program counter (PC)

• Memory address register (MAR)

• Current instruction register (CIR)

(a)   networks are often seen as less secure than wired networks for a number of reasons:

Which of the following answers is true for this question: "Describe factors affecting CPU performance?"

• Clock speed is the number of pulses the central processing unit's (CPU) clock generates per second.

• Cache is a small amount of high-speed random access memory (RAM) built directly within the processor. It is used to temporarily hold data and instructions that the processor is likely to reuse.

• Registers are small amounts of high-speed memory contained within the CPU. They are used by the processor to store small amounts of data that are needed during processing

• Number of cores. A processing unit within a CPU is known as a core. Each core is capable of fetching, decoding and executing its own instructions.

• A bus is a high-speed internal connection. Buses are used to send control signals and data between the processor and other components.

The clock sends out a regular electrical pulse which synchronises (keeps in time) all the components.

The frequency of the pulses is known as the clock speed. Clock speed is measured in (a)   .