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 '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.

2. 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

3. 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.

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

let x int

var x int

int x

x = var int

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

var s []int

slice s = []int{}

s = make([]int)

s := new([]int)

6. 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

7. 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.

8. 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.

9. 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.

10. 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

11. 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

12. 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.

13. 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

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

add()

insert()

append()

concat()

15. 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

16. 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.

17. 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

18. 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

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

input

fmt

scan

keyboard

20. 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.

Go Programming Language MCQ Test 4