A: Describe the function of the following:Boot control blockVolume control blockFile control blockDirectory StructureB: Directories are where pointers to the file's (including other directories) location and information arestored. There are three broad categories for managing directory information and Allocation: Linked,Index, Multilevel Index and Combined scheme. What impact does each method have to drive accessefficiency and reliability of storage and capacity of directory structure?C: What difference does Polling vs. interrupt driven I/O in terms of CPU efficiency, data reliability andcomplexity?D: Define register/memory-mapped I/O (Programmed I/O) vs. interrupt driven I/O and Direct Memoryaccess (DMA) and how do they differ?E: For the following sequence draw a scheduling graph (see Figure 10.4 for an example) using FCFS,SSTF, SCAN and C-LOOK? The tracks range from [0-50]. The hard drive is rotating/parked at track20. Any SCAN/LOOK is traversing from spinward (track 50) to spindleward (track 0) [in other wordsthe head will begin moving from right to left at the start of this queue].0, 1, 17, 3, 40, 43, 2, 44, 3, 45, 30, 15, 35, 5F: What purpose does RAID0, RAID1 and RAID 2 serve?

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A: Describe the function of the following: Boot control block Volume control block File control block

Database System Concepts

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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

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Chapter1: Introduction

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Concept explainers

Motherboard

All general-purpose computers and other expandable systems have the main circuit board which is known as a motherboard. All kinds of communication between the crucial electronic components are carried out through the motherboard only. It provides connectors for all peripherals and central processing units or CPUs. It is the foundation of a computer system designed specifically for types of processors and memory.

Question

100%

A: Describe the function of the following:
Boot control block
Volume control block
File control block
Directory Structure
B: Directories are where pointers to the file's (including other directories) location and information are
stored. There are three broad categories for managing directory information and Allocation: Linked,
Index, Multilevel Index and Combined scheme. What impact does each method have to drive access
efficiency and reliability of storage and capacity of directory structure?
C: What difference does Polling vs. interrupt driven I/O in terms of CPU efficiency, data reliability and
complexity?
D: Define register/memory-mapped I/O (Programmed I/O) vs. interrupt driven I/O and Direct Memory
access (DMA) and how do they differ?
E: For the following sequence draw a scheduling graph (see Figure 10.4 for an example) using FCFS,
SSTF, SCAN and C-LOOK? The tracks range from [0-50]. The hard drive is rotating/parked at track
20. Any SCAN/LOOK is traversing from spinward (track 50) to spindleward (track 0) [in other words
the head will begin moving from right to left at the start of this queue].
0, 1, 17, 3, 40, 43, 2, 44, 3, 45, 30, 15, 35, 5
F: What purpose does RAID0, RAID1 and RAID 2 serve?

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