Memory management basics in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to show where data is stored temporarily during program execution.

Intro to Computing

memory_location = [1]

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AHardDrive

BCPU

CMonitor

DRAM

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing RAM with permanent storage like HardDrive.

Thinking CPU is where data is stored temporarily.

The RAM (Random Access Memory) is where data is stored temporarily while a program runs. It is fast and volatile memory.

2fill in blank

medium

Complete the sentence to explain what happens when memory is full.

Intro to Computing

When memory is full, the system may use [1] to store data temporarily.

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Acache

Bvirtual memory

Cregisters

Dgraphics card

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing cache with virtual memory.

Thinking registers or graphics card are used for this purpose.

Virtual memory uses part of the hard drive to extend RAM, allowing the system to handle more data than physical RAM alone.

3fill in blank

hard

Fix the error in the statement about memory allocation.

Intro to Computing

Memory allocation is the process of [1] memory to programs when they need it.

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Afreeing

Bignoring

Callocating

Ddeleting

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing freeing or deleting instead of allocating.

Not understanding the meaning of allocation.

Memory allocation means giving or reserving memory space for programs to use.

4fill in blank

hard

Fill both blanks to complete the dictionary comprehension that maps variable names to their {{BLANK_1}} in bytes if size {{BLANK_2}} 4.

Intro to Computing

{var: size for var, size in variables.items() if size {{BLANK_2}} 4}

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Amemory size

B>

C<

Dvariable type

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable type instead of memory size.

Using '<' instead of '>' in the condition.

This comprehension creates a dictionary of variables with memory size greater than 4 bytes.

5fill in blank

hard

Fill both blanks to create a dictionary of variables with uppercase names, their sizes, and only if size {{BLANK_2}} 8.

Intro to Computing

{var[1]: size for var, size in variables.items() if size [2] 8}

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A.upper()

B<

C>

D.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using .lower() instead of .upper() for variable names.

Mixing up '<' and '>' operators in the condition.

This comprehension maps variable names converted to uppercase to their sizes, but only includes those with size less than 8 bytes.