034.3 JavaScript Control Structures and Functions (weight: 4) WEB-DEVELOPMENT-ESSENTIALS Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the purpose of the break statement in a switch statement?

   • ATo exit the switch statement after a case executes.
   • BTo skip the current case and continue to the next one.
   • CTo define the default case.
   • DTo restart the switch statement from the beginning.
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2. 17foundation · easy

   What is the main difference between a function declaration and a function expression?

   • AFunction declarations are hoisted, while function expressions are not.
   • BFunction expressions are hoisted, while function declarations are not.
   • CFunction expressions cannot be assigned to variables.
   • DFunction declarations cannot take parameters.
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4. 18foundation · easy

   What is the output of the following code? function test() { console.log(x); var x = 5; } test();

   • A5
   • Bundefined
   • Cnull
   • DReferenceError
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5. 19foundation · easy

   How many times will the following loop execute? for (let i = 0; i < 5; i++) { console.log(i); }

   • AInfinite
   • B6
   • C5
   • D4
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6. 20foundation · easy

   What is the output of the following code? for (let i = 0; i < 5; i++) { if (i === 3) { break; } console.log(i); }

   • A0 1 2 3
   • B0 1 2 4
   • C0 1 2
   • D0 1 2 3 4
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