Computer files Extension

1. What is meaning of .mng - Multiple Network Graphic
 2. What is extension of Microsoft Word Document ? - .doc, .docx
 3. What is meaning of .rtf file - Rich Text Format
 4. What is extension of plain text file - .txt
 5. What is meaning of .wpd file - Word Perfect Document
 6. What is extension of Yahoo Messenger data file - .yps
 7. What is extension of Temporary File - .tmp
 8. What is extension of Disc Image File - .iso, .nrg
 9. Which type file is with extension .vb - VBScript File
 10. What is the extension of font file - .fnt
 11. What is extension Hypertext Pre-processor File - .php
 12. What is extension of zipped file - .zip, .rar
 13. What is file extension of Window Installer Package - .msi
 14. What is full form of PNG file - Portable Network Graphic File
 15. What is the extension of data file. - .dat