GO Channels and Communication

Question 1

How do you create a buffered channel with capacity 5 in Go?

Accepted Answer

make(chan int, 5)

Answer

make(chan int)

Answer

chan int{5}

Answer

new(chan int, 5)

Question 2

What happens when you send to a full buffered channel with no receiver?

Accepted Answer

The goroutine blocks until space is available

Answer

The send is discarded

Answer

The send panics

Answer

The channel capacity doubles

Question 3

What is the result of receiving from a closed, empty channel in Go?

Accepted Answer

Returns zero value and false

Answer

Panic

Answer

Blocks forever

Answer

Returns zero value and true

Question 4

Which statement correctly closes a channel named `ch`?

Accepted Answer

close(ch)

Answer

ch.close()

Answer

ch = nil

Answer

delete(ch)

Question 5

What does `for v := range ch` do with a channel?

Accepted Answer

Receives values until the channel is closed

Answer

Iterates over channel indices

Answer

Sends values to the channel

Answer

Reads channel metadata

Question 6

What happens if you send on a closed channel?

Accepted Answer

A panic occurs at runtime

Answer

The value is silently dropped

Answer

The send blocks indefinitely

Answer

A compile error occurs