Tip 1 : Practice atleast 250-300 questions on coding platforms like leetcode,gfg and interviewbit
Tip 2 : Keep revising the theoritical topics like os,dbms and computer networking
Tip 3 : You must bevery well versed and should be able to explain the projects that you have mentioned in your resume.So practice for that too
Tip 1 : Don't make a fancy resume.make a simple resume and mention all your relevant projects and work experience.
Tip 2 : Don't write anything in your resume that you don't have a good knowledge of.If the interviewer asks some questions relating to the topic you have mentioned you should be able to explain that clearly otherwise it will create a very negative experience.
How would you solve the problem of critical section(apart from using semaphores)
Difference between multiprogramming and multitasking.
What is Kernel and types of Kernel