Reshak.ru — Another popular platform for checking answers to technical workbooks.
For official interactive versions with automatic checking, the publishing house offers a "Digital Workbook" service: Digital Workbook Part 1 Digital Workbook Part 2 otvety po informatike v rabochei tetradi za 8 klass bosova
Информатика 8 кл, рабочая тетрадь ч.1 [2016].pdf Reshak
Most students use specialized "GDZ" (Ready Homework Solutions) websites that provide answers specifically for the edition. These sites allow you to search for answers by specific task numbers: otvety po informatike v rabochei tetradi za 8 klass bosova