Windows NT 3.1 was the first to use a preemptive multitasking. However, it was Windows 95 which had true multitasking.
Windows 95
Both. Windows 3.1 and earlier used cooperative multitasking. Windows 95 and later use preemptive multitasking.
Windows 95
false it does support "pre-emptive multitasking" though.
False. Windows XP is a preemptive multitasking system. All contemporary operating systems are designed to use preemptive multitasking.
multiprogramming
Windows 95, Windows 98, Windows ME
False it does support "pre-emptive multitasking" though.
HAL
Microsoft's first operating system was MS-DOS 1.1. MS-DOS was based on the operating system 86-DOS which was purchased by Microsoft. Microsoft licensed MS-DOS 1.1 to IBM who resold it as PC-DOS 1.0.
multitasking
multitasking