Advanced Go Concepts

1. Which keyword is used to launch a new goroutine in Go?

go goroutine launch start

2. Which of the following are synchronization primitives provided by the sync package?

3. An empty interface (interface{}) in Go can hold values of any type.

True False

4. What keyword ensures a function call executes when the surrounding function exits?

5. What happens when sending to a buffered channel that is full?

The send succeeds immediately The send blocks until a receiver reads from the channel A panic is thrown The channel is automatically closed

6. Which of the following are valid uses of the context package?

Propagating cancellation signals Setting request timeouts Managing global application state Passing request-scoped values Allocating memory for goroutines

7. In Go, methods can only be defined on struct types.

True False

8. What does the sync.WaitGroup struct primarily coordinate?

Memory allocation across goroutines The completion of a group of goroutines Channel buffer sizes File descriptor limits

9. Name the statement used to handle multiple channel operations simultaneously.

10. Which statements about panic and recover are correct?

Panic should replace normal error handling Recover must be called within a deferred function Unrecovered panic terminates the program Recover returns nil if no panic occurred Panic can only be triggered by runtime errors

11. Type assertions in Go can convert an interface value to a concrete type.

True False

12. What is the purpose of the 'reflect' package?

To optimize garbage collection To inspect and manipulate types at runtime To handle network reflections To synchronize goroutines

13. Which are characteristics of Go interfaces?

Explicitly implemented with 'implements' keyword Implicitly satisfied by types with matching methods Can contain fields Can be embedded in structs Support method overloading

14. A goroutine is managed by the Go runtime, not the OS kernel.

True False

15. What does the 'go.mod' file primarily define?

Compilation flags Module dependencies and version constraints Goroutine pool size Application entry point

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