Which of the following statements is correct about cookies and JWTs?

Consider the following React component… function HappyBirthday() { const [age, setAge] = useState(18); const celebrate = useCallback(() => { setAge(age + 1); }, []); return Happy Birthday! } What will be the value of age after the “Happy Birthday” button is clicked?

Which of the following statements describes a false affordance?

Consider the following React component… function DataFetcher() {  useEffect(() => {    console.log(“A”);    fetch(“https://example.com/data”)      .then(r => {         console.log(“B”);      });  }, [])  console.log(“C”);  return Hello world!} Assuming the fetch request returns successfully, what are the first 3 letters, in order, printed to the console?

Which of the following expressions returns true?

You are conducting a Cognitive Walkthrough for a new mobile app designed to help users track their fitness goals. Which of the following steps would you take during the walkthrough?

Why would a person use an uncontrolled component over a controlled component?

Which of the following HTTP methods is used for preflight requests?

You are designing a website with buttons for users to submit forms. You want to ensure the buttons have proper affordances. Is the following statement true or false? “Using a raised, clickable button design with a shadow gives users a clear affordance that the button is interactive and can be clicked.”

The spread operator … is used to create deep copies.