Blockchain Go Developer set 3

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Free Online Best Blockchain MCQ Questions for improve your basic knowledge of Blockchain Go Developer. This Blockchain Go Developer set 3 test that contains 25 Multiple Choice Questions with 4 options. You have to select the right answer to a question.

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Question 1

is a popular package for writing web handlers

A	Gorilla/mux
B	size
C	len
D	cap()

Question 2

What is Blockchain ?

A	Blockchain is used to verify the transaction in the quickest time and less space complexity
B	Blockchain is a cryptocurrency
C	Blockchain is a record book
D	Blockchain is a technology behind cryptocurrency and just one case of technology

Question 3

What Are Methods In Go?

A	declaration syntax, a "receiver" is present to represent the container of the function
B	This receiver can be used to call function using "." operator.
C	Both A and B are correct
D	are anonymous functions and can be used in dynamic programming

Question 4

Which of the following is correct statement?

A	Go support type inheritance
B	Go support generic programming
C	Go a case sensitive language
D	All of Above

Question 5

What are the benefits of using Go Programming?

A	Support for environment adopting patterns similar to dynamic languages.
B	Compilation time is fast
C	InBuilt concurrency support: light-weight processes (via goroutines), channels, select statement
D	All of the above

Question 6

What is the output of the following code snippet? package main func main() { x := 1 y := &x fmt.Println(*y) *y = 2 fmt.Println(x) }

A	1
B	28
C	15
D	27

Question 7

What Are The Function Closures?

A	These are anonymous functions and can be used in dynamic programming.
B	declaration syntax, a "receiver" is present to represent the container of the function
C	this can be used to call function using "." operator.
D	All of Above

Question 8

8. Which of the following is initial value (zero value) for interfaces, slice, pointers, maps, channels and functions?

A	0
B	""
C	Nil
D	FALSE

Question 9

package main import ( "fmt") func hello() []string {return nil} func main() { h := hello if h == nil {fmt.Println("nil") } else { fmt.Println("not nil")} }

A	nil
B	not nil
C	compilation error
D	None of the above

Question 10

How To Get A Sub-slice Of A Slice?

A	used in for loop to iterate over items of an array, slice, channel or map
B	allows lower-bound and upper bound to be specified to get the subslice of it using[lower-bound:upper-bound].
C	is a way to convert a variable from one data type to another data type
D	All of Above

Question 11

Which of the following is correct statement?

A	Go support pointer arithmetics
B	Go support method overloading
C	Go support operator overloading
D	None of the above

Question 12

What is use of Spaw ?

A	Spaw allows us to view structs and slices cleanly formatted in our console
B	Spaw is a convenient function that pretty prints our structs into the console. It’s useful for debugging
C	Spaw is a way to convert a variable from one data type to another data type
D	Spaw allows lower-bound and upper bound to be specified to get the subslice of it using[lower-bound:upper-bound].

Question 13

What is a Merkle Tree?

A	Merkle Tree is used to verify the transaction in the quickest time and less space complexity
B	Merkle Tree is a cryptocurrency
C	Merkle Tree is a record book
D	Merkle Tree is a technology behind cryptocurrency and just one case of technology

Question 14

Which one of the following is correct?

A	const Pi = 3.14
B	const Pi = math.Pi
C	Both A and B are correct
D	None of the above

Question 15

What Is Range In Go?

A	used in for loop to iterate over items of an array, slice, channel or map
B	allows lower-bound and upper bound to be specified to get the subslice of it using[lower-bound:upper-bound].
C	is a way to convert a variable from one data type to another data type
D	All of Above

Question 16

What is a ledger?

A	ledger is typically a database or a record book
B	ledger works on the principle of ECCDLP
C	ledger provides equivalent security for a much lesser key size which makes ECC faster and more secure
D	ledgeris a cryptocurrency

Question 17

List out the built in support in GO?

A	Container: container/list , container/heap
B	Web Server: net/http
C	Cryptography: Crypto/md5 , crypto/sha1
D	All of these

Question 18

An lvalue may appear as either the left-hand or right-hand side of an assignment.

A	FALSE
B	TRUE
C	All of these
D	None

Question 19

What is use of spew.Dump ?

A	spew.Dump is a convenient function that pretty prints our structs into the console. It’s useful for debugging
B	spew.Dump allows us to view structs and slices cleanly formatted in our console
C	spew.Dump is a way to convert a variable from one data type to another data type
D	spew.Dump allows lower-bound and upper bound to be specified to get the subslice of it using[lower-bound:upper-bound].

Question 20

Which of these facts about a ledger is NOT CORRECT?

A	A ledger is used purely for the reporting of cash
B	A ledger consists of transactions, often governed by contracts
C	A ledger is a system of record
D	A ledger describes the inputs and outputs of a business.

Question 21

In which of the following method of parameter passing, changes made to the parameter inside the function have effect on the argument?

A	call by value.
B	call by reference
C	Both of the above.
D	None of the above.

Question 22

______is the position of the data record in the blockchain

A	Index
B	Timestamp
C	size
D	Gorilla/mux

Question 23

What are the different types of Blockchains?

A	2
B	3
C	4
D	5

Question 24

___is automatically determined and is the time the data is written

A	Timestamp
B	Index
C	len
D	size

Question 25

How to print type of a variable in Go?

A	var a, b, c = 3, 4, "foo" fmt.Printf("a is of type %Tn", a)
B	var a, b, c = 3, 4, "foo"tmt.Printf("a is of type %Tn", a)
C	var a, b, c = 3, 4, Printf("a is of type %Tn", a)
D	None of the above

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Blockchain Go Developer set 3

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