Stib Quizz Asyncio

What is the main problem with synchronous code?

• CPU works on many tasks
• CPU waits idly during I/O
• Multiple threads run at once
• Memory overflows

In IoT systems, synchronous execution is

• Faster
• Sequential and slow
• Always parallel
• Recommended

The solution to idle CPU time is

• Using multiprocessing
• Asynchronous programming
• Multithreading only
• Larger buffers

The main idea of async programming is to

• Execute tasks sequentially
• Execute multiple tasks concurrently
• Pause all tasks
• Restart CPU cycles

A coroutine in Python is

• A normal function
• A function defined with async def
• A class
• A variable

Calling an async function directly returns

• The result
• A coroutine object
• A thread
• A list

A coroutine starts execution only when

• It’s called normally
• It’s awaited or scheduled
• It’s defined
• The script ends

The keyword await is used to

• Run tasks faster
• Pause execution until completion
• Cancel the event loop
• Exit the coroutine

await can only be used

• Inside async def functions
• Inside normal def functions
• Outside any function
• In loops only

The asyncio.run() function

• Starts the event loop
• Creates a coroutine
• Ends all tasks
• Blocks code