GO Goroutines and Concurrency 2

Question 1

What is a race condition in Go?

Accepted Answer

Two goroutines accessing shared memory without proper synchronization

Answer

Two goroutines finishing at the same time

Answer

A goroutine running faster than expected

Answer

Deadlock caused by channel blocking

Question 2

How do you detect race conditions when running Go tests?

Accepted Answer

go test -race

Answer

go test -verbose

Answer

go test -sync

Answer

go test -concurrent

Question 3

Which `sync` type allows multiple concurrent readers but only one writer at a time?

Accepted Answer

sync.RWMutex

Answer

sync.Mutex

Answer

sync.Once

Answer

sync.Cond

Question 4

What is the purpose of `sync.Once`?

Accepted Answer

Execute a function exactly one time across all goroutines

Answer

Run a goroutine exactly once

Answer

Lock a mutex once and never unlock

Answer

Prevent goroutine reuse

Question 5

What does the Go scheduler use as its concurrency model?

Accepted Answer

M:N threading (many goroutines on fewer OS threads)

Answer

One OS thread per goroutine

Answer

Single-threaded event loop

Answer

Actor model

Question 6

Which function yields the processor, allowing other goroutines to run?

Accepted Answer

runtime.Gosched()

Answer

runtime.Sleep()

Answer

runtime.Yield()

Answer

runtime.Pause()