Make it easy to start a biz: Shaw

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TOI - Make it easy to start a biz: Shaw - 08Dec2015

This document provides an overview of the Linux operating system, including its history, design principles, and key components. It began in 1991 as a small kernel developed by Linus Torvalds and has grown through collaboration over the Internet. The core Linux kernel is original but can run existing UNIX software. Major versions have added support for new hardware, file systems, networking, and multiprocessing. Key components include the Linux kernel, system libraries, and system utilities. The kernel uses loadable modules and supports process management and scheduling.

운영체제론 Ch16

Jongmyoung Kim

This document discusses various techniques for distributed coordination including event ordering, mutual exclusion, atomicity, concurrency control, deadlock handling, election algorithms, and reaching agreement. It provides details on implementing happened-before relations for event ordering, centralized and distributed approaches for mutual exclusion, using two-phase commit for atomicity, locking protocols and timestamp ordering for concurrency control, deadlock prevention and detection methods, and election algorithms for determining where to restart a coordinator process.

운영체제론 Ch18

Jongmyoung Kim

This document discusses protection in operating systems. It covers the goals of protection, domains of protection, access matrices, implementation of access matrices, revocation of access rights, capability-based systems, and language-based protection. The key aspects are that protection ensures each object is only accessed by allowed processes, domains define access rights to objects, access matrices represent access permissions, and capabilities and access control lists are approaches to implementing and revoking access rights.

운영체제론 Ch14

Jongmyoung Kim

This document discusses network structures and communication. It describes different types of network topologies including fully connected, partially connected, tree-structured, star, ring, and bus networks. It also describes different network types like local area networks (LANs) and wide area networks (WANs). Additionally, it discusses important aspects of network communication like naming and addressing, routing strategies, connection strategies, contention, and design strategies using a layered approach.

Financing for Development

PRAVIN GODSE

This document discusses financing for sustainable development. It begins by defining development and sustainable development. It then outlines the 17 Sustainable Development Goals. The principal sources of finance for development are described as international public finance, international private finance, domestic public finance, domestic private finance, and blended finance. Multilateral development banks play an important role in development financing. Their response during the financial crisis involved financing fiscal measures, project financing, trade financing, and supporting private sectors. Moving forward, they can still mobilize long-term market financing and provide concessional financing to low-income countries.

운영체제론 Ch20

Jongmyoung Kim

The document provides an overview of the Unix operating system, including its history, design principles, interfaces, and key components. It was originally developed in 1969 at Bell Labs and incorporated features from Multics. The C programming language was developed to support Unix. Key aspects include its process management, memory management using paging and swapping, file system storing files in blocks and fragments, and user interface through command line shells.

Multivibrator bistabil

hidayatulloh08

This document discusses input/output (I/O) systems. It describes I/O hardware, including devices, ports, buses and controllers. It explains how I/O requests are handled using techniques like polling, interrupts and direct memory access. It also discusses the role of the operating system kernel in managing I/O through subsystems that interface with applications, transform requests, handle buffers and errors. The performance of I/O systems is also covered.

Business Class Fiscale maatregelen Limburg 7 december 2015

MooreStephensBE

Cert in Software Programming & ApplicationsKian Ngee (Ken) Lim

운영체제론 Ch13

Jongmyoung Kim

This document discusses secondary storage devices used by operating systems, including disk structure, disk scheduling algorithms, disk management, swap space management, and tertiary storage devices. It provides details on disk addressing, mapping, scheduling algorithms like FCFS, SSTF, SCAN and C-SCAN. It also summarizes disk reliability techniques, stable storage implementation, removable media like floppy disks, tapes, optical disks and their applications. Hierarchical storage management and performance factors like speed, reliability and cost of different storage devices are also overviewed.

운영체제론 Ch17

Jongmyoung Kim

This document summarizes key aspects of distributed file systems (DFS), including their structure, naming and transparency, remote file access using caching, stateful versus stateless service models, file replication, and examples like the Sun Network File System (NFS). A DFS manages dispersed storage across a network, using caching to improve performance of remote file access and dealing with issues of consistency between cached and server copies. NFS provides a specific implementation of a DFS that integrates remote directories transparently and uses stateless remote procedure calls along with caching for efficiency.

Start-up frenzy reflects a herd-like mentality

Make it easy to start a biz: Shaw

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