It 109 Lab 1.1

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Lab 1.1: Operating Systems Functions and Memory Management What are the major functions of an operating system? An operating system’s major functions include: Managing hardware resources Providing a stable, consistent interface for applications to communicate with computer hardware Monitoring system performance, debugging, and handling errors Controlling and managing processes submitted for execution in order to ensure efficient processing What is a file system and what are the three major file systems supported by windows? A file system is a way to store, retrieve and update a set of files Windows supports FAT16, FAT32 and NTFS file systems What are the limitations of these three file systems? FAT16 Root folder can only have 512 entries FAT16 is limited to 65536 clusters FAT16 is limited to maximum 4GB drive size No built in file system security FAT32 Largest volume (in Windows 2000) is 32GB Boot sector is not backed up No built in file system security NTFS Maximum cluster size is 64kB Maximum filename length is 255 characters What is the windows registry and what is its purpose? The windows registry is a database that stores configuration settings and options for Microsoft Windows. It stores low-level operating system configuration options as well as settings for applications that use the registry for that purpose. What are the key requirements memory management should satisfy? Protection Sharing Relocation Organization What kind of memory addresses does a CPU generate? A CPU generates a logical memory address What kind of memory addresses does a MMU generate? A MMU generates a physical memory address What is the process of loading a process from secondary memory into primary memory? The computer uses its I/O channels to access the secondary storage device and then transfers the process data to the primary

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