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 'break' statement in Go?

To exit a loop prematurely

To skip the next iteration of a loop

To end the program execution

To print a line break

2. 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.

3. 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

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

var s []int

slice s = []int{}

s = make([]int)

s := new([]int)

5. 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

6. 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

7. What is the purpose of the ' iota' identifier in Go?

To represent an imaginary number.

To indicate an infinite loop.

To represent an undefined value.

To simplify the definition of enumerated constants in a sequence.

8. What is the syntax for declaring a variable in Go?

let x int

var x int

int x

x = var int

9. 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

10. 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

11. How do you create a comment in Go?

// This is a comment

/* This is a comment */

# This is a comment

-- This is a comment

12. 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.

13. 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

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

Format

Framework

Functionality

File Management Tool

15. 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

16. 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

17. 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

18. How does Go support testing?

Go does not have built-in testing support

By using external testing frameworks

Using the 'testing' package and writing test functions

By adding comments as tests in the code

19. 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

20. 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

21. How do you handle errors in Go?

Use the 'error' keyword to declare errors explicitly.

Wrap code that may produce an error with 'try-catch' blocks.

Use the 'panic' function to signal errors.

Return errors as values from functions and check them explicitly.

22. 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.

23. How do you import a package in Go?

include

import

use

require

24. 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

25. What is the purpose of the 'new' keyword in Go?

To create a new file

To initialize a new variable

To define a new function

To allocate memory for a new variable

26. 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.

27. 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.

28. 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.

29. How does Go handle concurrency?

Using threads

Using coroutines

Using goroutines

Using synchronous execution

30. How does Go handle method overloading?

Go does not support method overloading

By using the 'overload' keyword

By defining multiple functions with the same name

By using a special syntax for overloaded methods

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

32. 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

33. 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

34. 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.

35. 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

36. 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.

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

input

fmt

scan

keyboard

38. 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

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

null

undefined

40. 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

Go Programming Language MCQ Test 2