ive downloaded ths multiple files and its extension goes in a series .z01 .z02
how do i extract/open it
Try to open with WinRAR.
Overview:
Usually, a .z01 file comes together with a .zip file and possibly a .z02, .z03 etc. the reason is that one single file can only contain up to 2Gb of data. In case of a larger dataset the data can be compressed in multiple files.
Your .z01 file needs not to be opened separately. Just opening the .zip file should suffice since most compression programs will consider the collection of volumes as one compressed dataset. In other words: if you view the .zip file’s content it will automatically also show the corresponding .z01’s content.
(Source: Quora)
How to open a Z01 file
You need a suitable software like WinZip to open a Z01 file. Without proper software you will receive a Windows message “How do you want to open this file?” or “Windows cannot open this file” or a similar Mac/iPhone/Android alert. If you cannot open your Z01 file correctly, try to right-click or long-press the file. Then click “Open with” and choose an application. You can also display a Z01 file directly in the browser. Just drag the file onto this browser window and drop it.
Programs that open and convert Z01 files:
See the previous paragraphs to learn more about the main application. Z01 files are often referred to as WinZip compresseds because this type of file is primarily created or used by this software.
- 7-Zip (split archive file) by Igor Pavlov
7-Zip is an open-source file archiving software developed by the individual developer Igor Pavlov. It supports several archive formats, including multi-volume archives, which are created when a file is split into parts for archiving. Z01 is a segment of a multi-volume archive created using WinZip. WinZip gives the first volume the Z01 extension, the second volume Z02, and so on. The last volume is given the ZIP extension. This file format is classified as Compressed. Related links: 7-Zip Repository, 7-Zip on Wikipedia
- Back4Win (split archive file) by Alistair George
Back4Win is a software for backing up data in a Windows computer to compressed ZIP files. The multi-part archives created using this software for backup have the extensions Z01, Z02, and so on. At least one volume is given the ZIP extension. This file format is classified as Backup. Related links: Back4Win Download Link
- StuffIt (split archive file) by Smith Micro
StuffIt is a file compression and archiving software by Smith Micro. It supports several archive formats, including multi-volume archives, which are created when a file is split into parts for archiving. Z01 is a segment of a multi-volume archive created using WinZip. WinZip gives the first volume the Z01 extension, the second volume Z02, and so on. The last volume is given the ZIP extension. This file format is classified as Compressed. Related links: StuffIt on Wikipedia, StuffIt Knowledge Base, StuffIt History
- The Unarchiver (split archive file) by MacPaw
The Unarchiver is a file archiving software for macOS. It supports several archive formats, including multi-volume archives, which are created when a file is split into parts for archiving. Z01 is a segment of a multi-volume archive created using WinZip. WinZip gives the first volume the Z01 extension, the second volume Z02, and so on. The last volume is given the ZIP extension. This file format is classified as Compressed. Related links: The Unarchiver on Wikipedia, Command-line Version of The Unarchiver for Windows and Linux
WinRAR is a file compression and archiving program from RARLAB. It supports several archive formats, including multi-volume archives, which are created when a file is split into parts for archiving. Z01 is a segment of a multi-volume archive created using WinZip. WinZip gives the first volume the Z01 extension, the second volume Z02, and so on. The last volume is given the ZIP extension. This file format is classified as Compressed. Related links: WinRAR on Wikipedia, WinRAR FAQs
(Source: filext)
Anything else mate? I believe it has been settled now! 
Have a nice day!
i didnt get a .zip/.rar file alongwith it 
Where did you find the binary files then?
Great explanations. Thank you.
!