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

1. 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

2. Which function is used to append elements to a slice in Go?

add()

insert()

append()

concat()

3. How does Go manage dependencies in a project?

Using a package manager

Manually downloading and adding dependencies

Dependencies are not supported in Go

Automatically bundled with the Go compiler

4. What is the purpose of the 'context' package in Go?

To define context menus in graphical interfaces

To handle keyboard input

To manage deadlines and cancellations in concurrent operations

To create global variables

5. 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.

6. What is the purpose of the 'range' keyword in Go?

To specify a range of values

To iterate over elements in an array, slice, map, or channel

To create a random number

To define a numerical range

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

Format

Framework

Functionality

File Management Tool

8. How does Go handle method receivers?

By using a special 'receiver' keyword

By allowing methods without receivers

By defining methods outside of structs

By specifying the type on which the method operates

9. How does Go handle concurrent programming?

Go does not support concurrent programming.

By using threads and locks.

By employing goroutines and channels.

By relying on the 'async' keyword.

10. 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

11. What is a closure in Go?

A function declared inside another function that has access to the outer function's variables.

A loop construct used for iterating over elements.

A type of data structure in Go.

A built-in function for error handling.

12. 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

13. How does Go handle concurrency?

Using threads

Using coroutines

Using goroutines

Using synchronous execution

14. What is the purpose of the 'fallthrough' keyword in a 'switch' statement in Go?

To indicate a fall in the execution of the program.

To fall through to the next case in a switch statement, even if it doesn't match.

To create a fall effect in the user interface.

To switch to the next iteration of a loop.

15. 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.

16. Explain 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.

17. How does Go handle type assertions?

By using the 'assert' keyword

Go does not support type assertions

By using the 'type' keyword

By using the 'assert' package

18. What is the purpose of the 'sync' package in Go?

To synchronize file operations.

To synchronize access to shared resources in a concurrent program.

To create synchronized loops.

To synchronize network communications.

19. What is the purpose of the 'range' keyword in a 'for' loop in Go?

To specify a range of values.

To iterate over elements in an array, slice, map, or channel.

To create a random number.

To define a numerical range.

20. How does Go handle function return values?

By allowing multiple return values

By limiting to a single return value

Go does not support return values

By using a special 'returns' keyword

21. 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

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

23. Which control structure is used for repeated execution of a block of code in Go?

for loop

if statement

switch statement

while loop

24. How do you create a comment in Go?

// This is a comment

/* This is a comment */

# This is a comment

-- This is a comment

25. 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

26. What is the purpose of the 'panic' function in Go?

To print a panic message

To terminate the program

To handle panics in Go

To create a panic situation intentionally

27. Explain the difference between the 'make' and 'new' functions in Go.

Both functions are used for memory allocation, but 'make' is specific to slices, maps, and channels, while 'new' is used for any data type.

'make' is used for memory allocation, and 'new' is used for variable initialization.

'make' is used for variable initialization, and 'new' is used for memory allocation.

There is no difference between the two functions.

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

const

let

constant

var

29. What is an interface in Go?

A user interface for graphical applications.

A set of methods that a type must implement to be considered as implementing the interface.

A graphical representation of data structures.

An alternative name for a class in object-oriented programming.

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

null

undefined

nil

31. 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.

32. Explain the purpose of defer statements in Go.

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

To skip the next iteration of a loop.

To handle panics in Go.

To create a delayed loop in Go.

33. Which package is commonly used for reading user input in Go?

input

fmt

scan

keyboard

34. 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

35. What is the purpose of the 'interface' type in Go?

To define a graphical user interface

To create abstract types and polymorphism

To handle network interfaces

To define package visibility

36. 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

37. 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.

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

var

let

int

new

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

var s []int

slice s = []int{}

s = make([]int)

s := new([]int)

40. How do you handle panic and recover in Go?

Using the 'throw' and 'catch' keywords.

By using the 'panic' and 'recover' built-in functions.

By relying on try-catch blocks.

By using the 'assert' function.

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

42. Which data type is used for whole numbers in Go?

float64

int

string

bool

43. What is the purpose of the 'unsafe' package in Go?

To perform unsafe operations such as direct memory access.

To handle security-related tasks in a program.

To create unsafe loops.

To manage unsafe user inputs.

44. What is the purpose of the 'recover' function in Go?

To recover lost data in a program.

To recover from a panic situation.

To recover deleted files.

To recover from an error.

45. 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.

46. What is the purpose of the 'defer' statement in file handling?

To delay file opening

To defer file closure until the end of a block

To defer file writing operations

To ensure file synchronization

47. What is the purpose of the 'defer' statement in Go?

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

To declare a deferred variable

To handle panics in Go

To create a delayed loop in Go

48. What is a goroutine in Go?

A lightweight thread managed by the Go runtime

A type of variable in Go

A built-in function for error handling

A loop construct in Go

49. What is the purpose of the 'copy' function in Go?

To duplicate a file

To copy elements from one slice to another

To copy a variable

To create a deep copy of a data structure

50. What is the purpose of the 'time' package in Go?

To measure execution time of a program

To create a timer

To handle time-related operations

To define a delay in a loop

Go Programming Language MCQ Test 1