GO Goroutines and Concurrency

Question 1

What keyword is used to start a goroutine in Go?

Accepted Answer

go

Answer

goroutine

Answer

async

Answer

spawn

Question 2

What is the primary purpose of the `sync.WaitGroup` in Go?

Accepted Answer

Wait for a collection of goroutines to finish

Answer

Limit goroutine count

Answer

Share data between goroutines

Answer

Cancel goroutine execution

Question 3

Which package provides the `Mutex` type for protecting shared state in Go?

Accepted Answer

sync

Answer

os

Answer

runtime

Answer

atomic

Question 4

What happens when a goroutine panics and the panic is not recovered?

Accepted Answer

The entire program crashes

Answer

Only that goroutine exits

Answer

The panic is silently ignored

Answer

Other goroutines are notified

Question 5

Which function returns the number of logical CPUs available to the current process?

Accepted Answer

runtime.NumCPU()

Answer

runtime.GOMAXPROCS(0)

Answer

os.NumCPU()

Answer

sync.NumCPU()

Question 6

What does `runtime.GOMAXPROCS(n)` do when called with `n > 1`?

Accepted Answer

Sets the maximum number of OS threads executing Go code simultaneously

Answer

Limits goroutine stack size

Answer

Increases goroutine priority

Answer

Disables the garbage collector