Explain OS services.
[5 marks]Explain Disk Cleanup and Backup in detail.
[5 marks]Show the working of antivirus in brief.
[5 marks]Explain PCB.
[5 marks]Explain SJF Scheduling algorithm with example.
[5 marks]Explain Difference between Internal and External Fragmentation
[5 marks]Explain Round Robin Scheduling algorithm with example.
[5 marks]Explain concept of Demand Paging in memory management.
[5 marks]Explain concept of virtual memory with example.
[5 marks]State advantages and disadvantages of time-sharing system.
[5 marks]Explain LRU page replacement strategy with example.
[5 marks]Explain functionalities of RTOS.
[5 marks]Write a shell script to find maximum out of three numbers.
[5 marks]Explain features of Symbian OS in detail.
[5 marks]Explain following UNIX Commands: pwd, cd, mkdir
[5 marks]Explain iOS in brief.
[5 marks]