OCR GCSE Computer Science (J277)

1.2 Memory and Storage: revision quiz and key terms

Free practice for 1.2 Memory and Storage in OCR GCSE Computer Science (J277). It has 4 parts: 1.2.1 Primary Storage, 1.2.2 Secondary Storage, 1.2.3 Units of Storage and 1.2.4 Data Storage. Try the questions, then check the key terms.

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Question 1 · Multiple choice

How many bits make up a nibble?

Question 2 · True or false?

A byte is a unit of data storage made up of eight bits.

Question 3 · Multiple choice

Which of the following units of data storage is the largest?

Question 4 · True or false?

RAM is non-volatile, so it keeps its contents when the power is switched off.

Question 5 · Multiple choice

How many binary bits does each hexadecimal digit represent?

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Key terms for 1.2 Memory and Storage

Hexadecimal: A base 16 number system that uses the digits 0 to 9 and the letters A to F.
Megabyte: 1,000 kilobytes.
Optical storage: Stores data using patterns of pits and lands read by a laser.
Overflow: Occurs when a result requires more bits than are available.
RAM: Volatile primary memory that holds the data and instructions currently in use.
ROM: Non-volatile memory that stores the instructions needed to start up the computer.
Secondary storage: Non-volatile storage, such as a hard disk drive or SSD, that keeps data permanently when the power is off.
Virtual memory: Part of secondary storage used as extra memory when RAM is full.

What 1.2 Memory and Storage covers

In RADevo this topic has a full topic test and a focused quiz for each part:

1.2.1 Primary Storage
1.2.2 Secondary Storage
1.2.3 Units of Storage
1.2.4 Data Storage

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