คำถามที่ 4

http://example.com https://www.example.com www.example.com https://example.com/about https://www.example.com/about www.example.com/about http://example.com/about https://example.com/products/item123 https://example.com/about#team https://username:password@example.com https://blog.example.com https://shop.example.com file:///C:/Documents/file.txt data:text/plain;base64,SGVsbG8sIFdvcmxkIQ== http://[2001:0db8:85a3:0000:0000:8a2e:0370:7334] mailto:user@example.com example.com tel:+1234567890