OS/2 Warp Kernel
Test 123 Objectives
SECTION 1 - MULTI-TASKING AND PROGRAM CONTROL
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Discuss the difference between pre-emptive and cooperative multitasking.
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Distinguish the differences between sessions, processes and threads.
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Discuss the concepts of parent, child and sibling processes.
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Describe OS/2's multilevel priority architecture.
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Examine how a multithreaded process model can be used to promote greater
overlap of I/O requests.
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Examine the conditions that can cause general protection faults.
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Discuss the uses of OS/2 exitlists and OS/2 exception handlers and why
they are necessary.
SECTION 2 - MEMORY MANAGEMENT
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Explain the concepts of virtual address space and real address space.
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Discuss the concepts of run-time shared memory, load-time shared memory,
named shared memory, and give-get shared memory.
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Distinguish between committed and uncommitted pages, and allocated and
unallocated pages.
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Discuss the performance implications of using OS/2 memory suballocation.
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Discuss the different states of a page frame.
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Explain the usage of a guard page.
SECTION 3 - FILE SYSTEM AND EXTENDED ATTRIBUTES
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Discuss the different characteristics of the File Allocation Table system
(FAT) and the High Performance File system (HPFS).
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Demonstrate knowledge of using OS/2 APIs to open, read, write, and close
a file.
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Demonstrate knowledge of using OS/2 APIs to manage a file pointer, whether
random or sequential.
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Discuss the use of the standard file handles in OS/2.
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Explain the usage of the extended attributes in OS/2.
SECTION 4 - MESSAGE (NLS-ENABLING)
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Describe how message files are used to facilitate NLS support.
SECTION 5 - SEMAPHORES
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Summarize the differences between event and mutex semaphores.
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Distinguish between private semaphores and shared semaphores.
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Explain the uses of the 3 different types of semaphores (Mutex, Event,
and Muxwait).
SECTION 6 - INTER-PROCESS COMMUNICATIONS
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Discuss the use of shared memory for Inter-Process Communications (IPC).
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Distinguish between anonymous and named pipes.
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Discuss the uses of anonymous pipes.
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Discuss the uses of named pipes.
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Distinguish between queue owners and writers.
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Discuss the uses of OS/2 queues.
SECTION 7 - TIMERS and DEVICE I/O
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Explain the need and uses of device drivers.
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Describe the use of the I/O Control Interface (IOCtl).
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Explain why OS/2 device drivers must be re-entrant.
SECTION 8 - DYNAMIC LINKING
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Differentiate between static and dynamic linking.
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Differentiate between load-time and run-time dynamic linking.
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Classify the different types of DLL data and how the data is accessed.
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Differentiate between run-time memory and load-time memory.
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