JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly

1. DUMPS BASE EXAM DUMPS PYTHON INSTITUTE JSA-41-01 28% OFF Automatically For You JSA - Certified Associate JavaScript Programmer 1 / 8

2. 1.Which of the following methods will correctly perform a deep clone of an object in JavaScript? A. original.clone() B. JSON.parse(JSON.stringify(original)) C. Object.create(original) D. Object.assign({}, original) Answer: B 2.Consider the following JavaScript code snippet: 3. const book = { JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly C. The Great Gatsby by F. Scott Fitzgerald D. undefined by undefined Answer: D 4. title: 'The Great Gatsby', 5. author: 'F. Scott Fitzgerald', 6. getSummary: function() { 7. return `${this.title} by ${this.author}`; 8. } 9. }; 10. 11. const getBookSummary = book.getSummary; 12. console.log(getBookSummary()); // What will this log to the console? A. ReferenceError: title is not defined B. null 13.Consider the following JavaScript code snippet: 14. const obj = { 15. prop: 42, 2 / 8

3. 16. func: function() { 17. return this.prop; 18. } 19. }; 20. 21. const extractedFunc = obj.func; JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly D. function getIncompleteTaskTitles(tasks) { return tasks.filter(task => !task.completed) .sort((a, b) => a.title.localeCompare(b.title)) .map(task => task.title);} Answer: D 22. console.log(extractedFunc()); // What will this log to the console? A. 42 B. TypeError: extractedFunc is not a function C. undefined D. null Answer: C 23.You have an array of tasks, where each task is an object with properties id, title, and completed. Write a JavaScript function that returns a new array containing only the titles of the tasks that are not completed, sorted alphabetically. Which of the following functions correctly implements this? A. function getIncompleteTaskTitles(tasks) { return tasks.sort((a, b) => a.title.localeCompare(b.title)) .filter(task => !task.completed) .map(task => task.title);} B. function getIncompleteTaskTitles(tasks) { return tasks.filter(task => task.completed) .map(task => task.title) .sort((a, b) => a.localeCompare(b));} C. function getIncompleteTaskTitles(tasks) { return tasks.map(task => task.title) .filter(task => !task.completed) .sort((a, b) => a.localeCompare(b));} 24.You have the following JavaScript code: 25. let config = { 26. server: "localhost", 3 / 8

4. 27. port: 8080, 28. options: { 29. secure: true, 30. timeout: 5000 31. }, 32. features: { JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly C. config.options.timeout D. config[key].options[dynamicKey] Answer: A, C 33. feature1: "enabled", 34. feature2: "disabled" 35. } 36. }; 37. 38. let key = "features"; 39. let subKey = "feature1"; 40. let dynamicKey = "timeout"; Which two of the following expressions correctly access the value 5000 from the config object? A. config["options"]["timeout"] B. config[key][subKey] 41.Consider the following code snippet: 42. let sentence = new String(" JavaScript "); 43. let trimmedSentence = sentence.trim().padEnd(15, "."); 4 / 8

5. 44. console.log(trimmedSentence); What will be the output? A. "JavaScript..." B. "JavaScript" C. "JavaScript....." D. " JavaScript " Answer: C 45.You are tasked with writing a JavaScript function that takes multiple arguments and returns the sum of those arguments. If no arguments are provided, the function should return a default value of 10. Which implementation correctly achieves this using default parameter values, the rest parameter, and the spread operator? A. function sum(...args, defaultValue = 10) { return args.length ? args.reduce((a, b) => a + b, 0): defaultValue;} B. function sum(args = [10]) { return args.reduce((a, b) => a + b, 0);} C. function sum(defaultValue, ...args = [10]) { return args.reduce((a, b) => a + b, 0);} D. function sum(defaultValue = 10, ...args) { return args.length ? args.reduce((a, b) => a + b, 0): defaultValue;} Answer: D JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly 51. this.owner = owner; 46.Consider the following JavaScript code: 47. class BankAccount { 48. static totalAccounts = 0; 49. 50. constructor(owner, balance) { 52. this.balance = balance; 53. BankAccount.incrementAccounts(); 54. } 55. 5 / 8

6. 56. static incrementAccounts() { 57. BankAccount.totalAccounts++; 58. } 59. } 60. 61. let account1 = new BankAccount('Alice', 1000); 62. let account2 = new BankAccount('Bob', 1500); JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly D. const obj1 = { name: "Gadget" }; E. const obj3 = Object.create({ name: "Gadget" }); Answer: A, D 63. let account3 = new BankAccount('Charlie', 2000); 64. 65. console.log(BankAccount.totalAccounts); What will be the output of console.log(BankAccount.totalAccounts)? A. 2 B. 1 C. 3 D. 0 Answer: C 66.Which two options correctly demonstrate different ways to create a new object with a Name property set to "Gadget" without using a class? A. const obj2 = new Object(); obj2.name = "Gadget"; B. const obj5 = new Function();obj5.name = "Gadget"; C. const obj6 = function() { this.name = "Gadget"; }; 67.Which of the following code snippets correctly initializes an array, adds a new element to the end, and removes the first element? A. let arr = [1, 2, 3];arr.unshift(4);arr.shift(); B. let arr = [1, 2, 3];arr.push(4);arr.shift(); C. let arr = [1, 2, 3];arr.pop();arr.push(4); D. let arr = [1, 2, 3];arr.push(4);arr.pop(); 6 / 8

7. Answer: B 68.Which two statements correctly demonstrate the use of prototypes to add a greet method to all instances of a Person constructor function? 69. function Person(name) { 70. this.name = name; 71. } A. const person2 = new Person("Bob");person2.__proto__.greet = function() { return "Hello, " + this.name; }; B. Person.greet = function() { return "Hello, " + this.name; }; C. Person.prototype.greet = function() { return "Hello, " + this.name; }; D. Person.prototype.greet = () => { return "Hello, " + this.name; }; E. const person1 = new Person("Alice"); person1.greet = function() { return "Hello, " + this.name; }; Answer: A, C JS Institute JSA-41-01 Dumps (V8.02) to Pass Your Exam Quickly 72.You are managing a collection of students enrolled in different courses. You need to find the total number of unique students across all courses. Given the following code snippets, which one correctly calculates the number of unique students? 7 / 8

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