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L4 is a microkernel developed by Jochen Liedtke which significantly improves the performance of earlier microkernels such as Mach. One of the main mechanisms of

L4 is a microkernel developed by Jochen Liedtke which significantly improves the performance of earlier microkernels such as Mach. One of the main mechanisms of L4 used to improve the speed is the newly designed inter-process communication (IPC) method which is 20 times faster than Mach.

(a) Explain how IPC is used in running a microkernel. (5pts)

(b) Explain how improving the speed of IPC could result in the enhanced speed of a microkernel. (5pts)

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