What is the key difference between a cookie and a local storage item in a browser?

What is the key difference between a cookie and a local storage item in a browser?

• A. Cookies are sent with requests to the server; local storage persists data on the client side and is not sent automatically with each request
• B. Cookies are not sent with requests to the server
• C. Local storage persists data on the client side and is sent automatically with each request
• D. Local storage is cleared after every browser restart

Answer: (A)

The main idea here is how data travels between the browser and the server. Cookies are sent automatically with every HTTP request to the server for the relevant domain, so the server can read them as part of that request. Local storage, on the other hand, keeps data on the client side in the browser and is not sent with requests unless your code explicitly includes it in a request payload. This is why cookies are often used for session information and authentication, while localStorage is used to store larger amounts of data on the client that doesn’t automatically travel to the server. Additionally, cookies have expiration and scope settings, while localStorage data persists until you clear it.

The main idea here is how data travels between the browser and the server. Cookies are sent automatically with every HTTP request to the server for the relevant domain, so the server can read them as part of that request. Local storage, on the other hand, keeps data on the client side in the browser and is not sent with requests unless your code explicitly includes it in a request payload. This is why cookies are often used for session information and authentication, while localStorage is used to store larger amounts of data on the client that doesn’t automatically travel to the server. Additionally, cookies have expiration and scope settings, while localStorage data persists until you clear it.