Exam code: J277
Nina wants to transfer photos from a digital camera to an external secondary storage device.
Identify the three common types of storage Nina can choose from.
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State four characteristics of secondary storage devices that Nina should consider when choosing a device.
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Ali’s tablet computer has ROM (read only memory).
Describe the purpose of ROM in Ali’s tablet computer.
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Both computers have RAM and ROM.
The table has five statements describing RAM and/or ROM.
Tick (✓) one or more boxes in each row to identify if that statement describes RAM and/or ROM.
RAM | ROM | |
|---|---|---|
Stores data | ||
The memory is volatile | ||
Data will not be lost when the computer is turned off | ||
Data is read-only, cannot be changed | ||
Stores currently running data and instructions |
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Give one difference between RAM and flash memory.
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A musician is trying to decide if they should buy a magnetic secondary storage device or a solid state secondary storage device for their computer
Identify one other type of secondary storage.
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Identify the two main types of primary storage found in a typical general-purpose computer system
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State which type of primary storage is volatile and will lose its contents when the power is turned off
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Identify which type of primary storage is used to store the start-up instructions (bootstrap) for a computer
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A smart television allows the user to search the Internet and watch videos online.
The smart television has both RAM and ROM.
State the difference between RAM and ROM.
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Give two examples of data that the smart television could store in RAM.
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The smart television has secondary storage.
State, using an example, why the smart television needs secondary storage.
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Identify one appropriate type of secondary storage for the smart television. Justify your choice.
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Nina wants to transfer photos from a digital camera to an external secondary storage device.
Define what is meant by ‘secondary storage’.
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Tick (✓) one box in each row to show whether each of the statements is true for the RAM or ROM in a Sat Nav.
RAM | ROM | |
|---|---|---|
Stores the boot up sequence of the Sat Nav. | ||
The contents are lost when the Sat Nav is turned off. | ||
Holds copies of open maps and routes. |
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A computer system has a 2.5 GHz processor and 5 GB of RAM.
Complete the paragraph about memory by writing the missing terms in the spaces, using the words provided.
cache | data | hard drive | write |
instructions | changed | closing | memory stick |
operator | primary | random | virtual |
read | secondary | start-up | translator |
ROM stands for ................................. only memory. This stores the ................................. instructions for a computer and cannot be ................................. . RAM stands for ................................. access memory. This stores the instructions and ................................. that are currently being used. If the computer does not have enough RAM to run a process it can make use of ................................. memory. RAM and ROM are both examples of ..................memory. Memory located close to the processor that allows faster access than from RAM is called ........................memory. |
|---|
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Charlie has purchased a new tablet computer. The tablet has an internal secondary storage device.
Describe what the internal secondary storage device will store.
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The storage device is a solid state device.
Give three benefits of the tablet having a solid state device instead of a magnetic device.
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Give two drawbacks of the tablet having a solid state device instead of a magnetic device.
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A musician uses a computer to make and record music
The musician has run out of storage space on their secondary storage device and needs to buy a replacement.
Identify whether the musician should buy a magnetic secondary storage device or a solid state secondary storage device for their computer.
Justify your choice.
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A car has a ‘Follow Me’ system that uses a cruise control feature to allow the car to follow the car in front of it. It will keep the same speed and distance without the driver’s intervention. The cruise control system is an example of an embedded system.
The car’s system has Read Only Memory (ROM) and Random Access Memory (RAM).
State two items that will be stored in the ROM for the ‘Follow Me’ system.
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The RAM will store currently running data and instructions.
State three items of data that will be stored in the RAM for the ‘Follow Me’ system.
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Explain why the ‘Follow Me’ system does not need virtual memory.
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Describe the purpose of RAM in a computer system and why it is needed for a computer to function
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Explain why a computer requires ROM in addition to RAM, specifically referring to what happens when the computer is first switched on
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A student is using a computer for photo editing.
Describe how the Operating System uses primary storage to allow the student to perform this task
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Identify one benefit of a computer system having a large capacity of RAM when a user is running multiple applications at the same time
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Kerry has 5GB of files to transfer from her laptop at work to her new computer. She has been told to buy an external solid state device to do this.
Give one example of a solid state device.
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Identify whether the device given in part (a) is an example of primary or secondary memory.
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Kerry was originally going to use an optical storage device to transfer her files.
Discuss whether an optical or solid state device is the most appropriate media to transfer these files.
You may want to consider the following characteristics in your answer:
portability
robustness
capacity
cost
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The filesizes of Kerry’s files are usually displayed in megabytes (MB) or gigabytes (GB).
Calculate how many MB are in 5GB. Show your working.
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William is creating a film for a school project using a digital video camera.
The digital video camera has a secondary storage device.
Explain why the digital video camera needs secondary storage.
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The digital video camera uses solid state storage.
Explain why solid state storage is the most appropriate type of storage for the digital video camera.
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Alicia's computer only has 2GB of RAM, but she says that virtual memory can be used instead of adding more RAM.
Explain how virtual memory can compensate for the lack of RAM in Alicia’s computer.
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Explain why it would be beneficial for Alicia to get more RAM instead of relying on virtual memory.
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A user is running several memory-intensive programs, and the RAM has become full.
Explain how virtual memory will be used to allow the computer to continue functioning
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A specialised cruise control system in a car is an example of an embedded system.
Explain why this specific system is unlikely to require virtual memory, even if its RAM capacity is low
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Compare primary storage with secondary storage, focusing on the need for each in a computer system and their different characteristics regarding volatility and access speed
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A small photography business needs to store and transport large image files between their studio and client locations. They are considering using either an external hard disk drive (HDD) or a USB flash drive.
Evaluate which type of secondary storage device would be most appropriate for this scenario, considering factors such as capacity, portability, durability, and cost.
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A local veterinary clinic needs to back up patient records and medical imaging files. The clinic manager is deciding between using a solid-state drive (SSD) or a magnetic hard drive (HDDs) for this purpose.
Compare these two types of secondary storage devices for this use case.
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