Is it necessary placing exit/cancel/close button if there are 'x' (close button) at the pop up window

1. Where should the close button be placed?
2. Are the close button and X on a popup redundant?
3. How do I close a pop up window?
4. Should modals have a close button?

Where should the close button be placed?

The upper right corner of a modal window is the common place for the close button X in desktop experience.

Are the close button and X on a popup redundant?

Yes, they're redundant.

How do I close a pop up window?

Look for an "X" at the top right corner of the pop up. If you don't see it, look for a button that says " “dismiss”, “leave page”, “close”, “no thanks”, or similar. Close the whole browser tab or window to get rid of the pop up. Click the small "X" at the top of the browser window or swipe away if you are on mobile.

Should modals have a close button?

Closing the modal: Always provide a clear close option for users by using a button or an 'x' icon at the top right of the modal.