Complex Go Programming Language Test - 70+ MCQs: Go Programming Language test: Evaluate Your Skills with Go Questions and Answers

1. Which operator is used for logical AND in Go?

2. In Go, what is the role of the 'defer' statement in error handling?

To defer error handling until later in the program

To prevent error propagation

To ensure that cleanup operations are executed even in the presence of errors

To handle panics only

3. What is the purpose of the 'cgo' tool in Go?

To create graphical user interfaces

To interact with C libraries

To manage concurrent operations

To optimize code generation

4. Explain the purpose of the 'context' package in Go.

To define the context of a program.

To create background tasks in a program.

To cancel operations that are no longer needed.

To manage the layout of user interfaces.

5. Which operator is used for concatenating strings in Go?

6. How is error handling typically done in Go?

Using try-catch blocks.

By relying on the 'finally' statement.

Returning errors as values from functions and checking them explicitly.

By using the 'assert' function.

7. How does Go handle variable declaration and assignment?

By requiring explicit declaration and initialization

By allowing implicit declaration and initialization

Go does not support variable assignment

By using the 'var' keyword only

8. Which keyword is used to declare a constant in Go?

const

let

constant

var

9. Which type of loop is used for iterating over elements in an array or slice in Go?

while loop

for loop

do-while loop

foreach loop

10. In Go, what is the difference between slices and arrays?

Arrays have a fixed size, while slices can grow dynamically

Arrays and slices are interchangeable terms

Slices are only used in concurrent programming

Arrays are reference types, and slices are value types

11. What is the purpose of the 'select' statement in Go?

To select a value from a list

To choose a case from a switch statement

To select a channel communication operation

To define a selection sort

12. How do you initiate a slice with specific values in Go?

Using the 'slice' keyword.

By assigning values directly to the slice.

Using the 'init' function.

Using the 'make' function with initial values.

13. How do you perform type assertion in Go?

Using the 'cast' keyword.

By specifying the desired type in parentheses after the expression.

Go automatically performs type assertion.

By using the 'assert' function from the 'assert' package.

14. What is the purpose of the 'make' function in Go?

To create a new variable

To make a decision in a conditional statement

To allocate memory for a new variable

To create a new slice, map, or channel

15. What is the purpose of the 'init' function in Go?

To initialize global variables.

To initialize package-level variables and perform one-time setup tasks.

To initialize local variables.

To initialize variables in a loop.

16. What is the default value of an uninitialized integer variable in Go?

null

undefined

17. What is the purpose of the 'defer' statement in goroutines?

To create a delay before starting a goroutine

To defer the execution of a function until a goroutine completes

To prevent race conditions in goroutines

To ensure that goroutines are executed concurrently

18. What does the 'fmt' package in Go stand for?

Format

Framework

Functionality

File Management Tool

19. Which data type is used for representing true or false values in Go?

int

bool

string

float64

20. What is the purpose of the 'defer' keyword in Go?

To delay the execution of a function until the end of the program

To skip the next iteration of a loop

To handle panics in Go

To defer the execution of a function until the surrounding function returns

21. Which keyword is used to declare a variable in Go?

var

let

int

new

22. What is the purpose of the 'interface' keyword in Go?

To create a graphical user interface

To specify a set of method signatures

To define a new data type

To handle user interactions

23. How does Go handle pointers?

Go does not support pointers

By using a special 'pointer' keyword

By automatically managing pointers

By requiring explicit pointer declaration and dereferencing

24. Which built-in function is used to find the length of a slice in Go?

len()

size()

length()

count()

25. What is the zero value of a variable in Go?

null

undefined

nil

26. How does Go handle garbage collection?

Go relies on manual memory management.

Go has no garbage collection.

Go uses automatic garbage collection to manage memory.

Go requires developers to explicitly free memory.

27. How does Go handle concurrency?

Using threads

Using coroutines

Using goroutines

Using synchronous execution

28. How does Go handle error handling compared to other languages?

Go uses try-catch blocks for error handling

Go relies on exceptions

Go uses explicit return values for errors

Go does not support error handling

29. How do you declare and initialize a slice in Go?

var s []int

slice s = []int{}

s = make([]int)

s := new([]int)

30. Explain goroutines and how they differ from threads.

Goroutines are threads in Go.

Goroutines are lightweight threads managed by the Go runtime and have a smaller memory footprint compared to threads.

Threads are a more efficient version of goroutines.

Goroutines and threads are terms used interchangeably in Go.

Go Programming Language MCQ Test 3