Inside OS/2 Warp Server, Volume 1: Exploring the Core Components
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Configuring DNS
Configuring DNS The Domain Name System (DNS) is a distributed database in which you can map hostnames to IP addresses through the DNS protocol from a DNS server. Each unique IP address can have an associated hostname. The Cisco IOS software maintains a cache of hostname-to-address mappings for use by the connect, telnet, and ping EXEC commands, and related Telnet support operations. This cache speeds the process of converting names to addresses. Note You can specify IPv4 and IPv6 addresses while performing various tasks in this feature. The resource record type AAAA is used to map a domain name to an IPv6 address. The IP6.ARPA domain is defined to look up a record given an IPv6 address. • Finding Feature Information, page 1 • Prerequisites for Configuring DNS, page 2 • Information About DNS, page 2 • How to Configure DNS, page 4 • Configuration Examples for DNS, page 13 • Additional References, page 14 • Feature Information for DNS, page 15 Finding Feature Information Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module. Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required. -
Testing-Prepare.Pdf
Prepare Update your system so you can connect to the staging server to perform testing – required for all users EXCEPT “new users.” If you are not certain how to complete the steps listed in Prepare, you should abort testing efforts. Breaking your “hosts” file may prevent applications that use the Internet, such as your Web browser, from functioning properly. Also note that this will make non-CMS www.ndsu.edu sites unavailable while you are testing until you perform the clean-up steps on page 11 of this packet. Windows XP 1. Close all browser windows 2. Open My Computer 3. Browse to Local Disk (C:) > WINDOWS > system32 > drivers > etc 4. Double-click hosts 5. In the Open With dialog window, select Notepad and click OK 6. At the end of the file, AFTER 127.0.0.1 localhost, add a new line with the following entry 134.129.111.243 www.ndsu.edu workspaces.ndsu.edu An example of what the file should look like follows these directions Note that if you usually sign in somewhere other than “workspaces.ndsu.edu” you should add that address to the end of this list, for example like 134.129.111.243 www.ndsu.edu workspaces.ndsu.edu english.ndsu.edu 7. Save the file Remember to complete the clean-up steps on page 11 of this packet when you are done testing Windows Vista 1. Close all browser windows 2. Click the Start menu > All Programs > Accessories > and RIGHT-CLICK Notepad 3. Choose Run as administrator 4. In the User Account Control dialog, click Continue or if you are not an administrator, provide a password for an administrator account and click OK 5. -
With ANSIBLE Sessions
SANOG32 bdNOG9 02-10 August, 2018 Dhaka, Bangladesh NETWORK Imtiaz Rahman AUTOMATION (NetDevOps) SBAC Bank Limited [email protected] https://imtiazrahman.com with ANSIBLE Sessions • Session 1: o 14:30 PM – 16:00 PM (Theory with example) • Session 2: o 16:30 PM – 18:00 PM (Configuration and hands on LAB) Today’s Talk 1. Devops/NetDevOps ? 6. Ansible Language Basics 2. Why automation ? 7. Ansible encryption decryption 3. Tools for automation 8. How to run 4. Why Ansible ? 9. Demo 5. Ansible introduction 10. Configuration & Hands on LAB DevOps >devops ? DevOps >devops != DevOps DevOps integrates developers and operations teams In order to improve collaboration and productivity by automating infrastructure, automating workflows and continuously measuring application performance Dev + Ops = DevOps NetDevOps NetDevOps = Networking + DevOps infrastructure as code Why automation ? Avoid Avoid repeated Faster Identical typographical task deployment configuration error (Typos) Tools for automation What is ANSIBLE? • Open source IT automation tool • Red hat Enterprise Linux, CentOS, Debian, OS X, Ubuntu etc. • Need python Why ANSIBLE? • Simple • Push model • Agentless Why ANSIBLE? Puppet SSL Puppet Puppet master Client/agent Ansible Agentless Controller SSH node Managed with ansible node’s How it works 1 2 3 4 Run playbook SSH SSH Laptop/Desktop/ Copy python Run Module Delete Module Server module on device from device Return result 5 What can be done?? • Configuration Management • Provisioning VMs or IaaS instances • Software Testing • Continuous -
Kontron / ICS Advent SB586P(V) Manual (Pdf)
Full-service, independent repair center -~ ARTISAN® with experienced engineers and technicians on staff. TECHNOLOGY GROUP ~I We buy your excess, underutilized, and idle equipment along with credit for buybacks and trade-ins. Custom engineering Your definitive source so your equipment works exactly as you specify. for quality pre-owned • Critical and expedited services • Leasing / Rentals/ Demos equipment. • In stock/ Ready-to-ship • !TAR-certified secure asset solutions Expert team I Trust guarantee I 100% satisfaction Artisan Technology Group (217) 352-9330 | [email protected] | artisantg.com All trademarks, brand names, and brands appearing herein are the property o f their respective owners. Find the Kontron / ICS Advent SB586PV at our website: Click HERE Model SB586P(V) Product Manual MANUAL NUMBER : 00431-027-3C Page - ii FOREWORD This product manual provides information to install, operate and or program the referenced product(s) manufactured or distributed by ICS Advent. The following pages contain information regarding the war- ranty and repair policies. Technical assistance is available at: 800-480-0044. Manual Errors, Omissions and Bugs: A "Bug Sheet" is included as the last page of this manual. Please use the "Bug Sheet" if you experience any problems with the manual that requires correction. The information in this document is provided for reference only. ICS Advent does not assume any liability arising from the application or use of the information or products described herein. This document may contain or reference information and products protected by copyrights or patents and does not convey any license under the patent rights of ICS Advent, nor the rights of others. -
Cisco IOS Easy IP
WHITE PAPER Cisco IOS Easy IP Summary • Conserve registered IP addresses Cisco IOS Easy IP enables transparent and dynamic IP • Maximize IP address manageability address allocation for hosts in remote environments via Remote networks have variable numbers of end systems that DHCP, reduces router configuration tasks via dynamic PPP/ need access to the Internet. Hence, ISPs are interested in IPCP address negotiation, conserves IP addresses via PAT, allocating just one IP address to each remote LAN. and minimizes Internet access costs for remote offices. In enterprise networks where telecommuter populations Cisco IOS Easy IP is a combination of the following are growing extremely fast, network administrators need functionality: solutions that ease configuration and management of remote • Port Address Translation (PAT), a subset of Network routers and provide conservation and dynamic allocation of Address Translation (NAT) IP addresses within their networks. Such solutions are • Dynamic PPP/IPCP WAN interface IP address negotiation especially important when network administrators • Cisco IOS DHCP Server implement large dialup user pools where ISDN plays a major This paper describes the features and benefits of Cisco IOS role. Easy IP, provides a technical discussion of how it works, As part of Cisco IOS software, the premier platform that including details on the Cisco IOS DHCP Server, and includes delivers network services and enables networked availability, packaging, and platform support information. applications, Cisco IOS Easy IP is a scalability/connectivity service that provides solutions for each of these challenges. It Introduction provides cost savings, scalability, conservation of registered Exponential growth in the remote access router market has IP addresses, and eases router deployment by nontechnical created new challenges for Internet service providers (ISPs) users. -
KUNCI JAWABAN CHAPTER 2 CCNA-RS-ITN-SIM-1 Configuring a Network Operating System Chapter 2 Exam
KUNCI JAWABAN CHAPTER 2 CCNA-RS-ITN-SIM-1 Configuring a Network Operating System Chapter 2 Exam Mandar 3 Oktober 2016 CCNA-RS-ITN-SIM-Ganjil-2016 MANDAR 3 OKTOBER 2016 KUNCI JAWABAN CHAPTER 2 1. Which two features are characteristics of flash memory? (Choose two.) Flash provides nonvolatile storage. The contents of flash may be overwritten. 2. A network administrator is planning an IOS upgrade on several of the head office routers and switches. Which three questions must be answered before continuing with the IOS selection and upgrade? (Choose three.) What models of routers and switches require upgrades? Do the routers and switches have enough RAM and flash memory for the proposed IOS versions? What features are required for the devices? 3. Which procedure is used to access a Cisco 2960 switch when performing an initial configuration in a secure environment? Use the console port to locally access the switch from a serial or USB interface of the PC. 4. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen? SSH 5. A router has a valid operating system and a configuration stored in NVRAM. When the router boots up, which mode will display? user EXEC mode 6. Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.) displaying a list of all available commands within the current mode determining which option, keyword, or argument is available for the entered command 7. -
SOS Internals
Understanding a Simple Operating System SOS is a Simple Operating System designed for the 32-bit x86 architecture. Its purpose is to understand basic concepts of operating system design. These notes are meant to help you recall the class discussions. Chapter 1 : Starting Up SOS 3 Registers in the IA-32 x86 Architecture BIOS (Basic Input/Ouput System) Routines Real Mode Addressing Organization of SOS on Disk and Memory Master Boot Record SOS Startup A20 Line 32-bit Protected Mode Addressing Privilege Level Global Descriptor Table (GDT) More on Privilege Levels The GDT Setup Enabling Protected Mode Calling main() Chapter 2 : SOS Initializations 10 In main() Disk Initialization Display Initialization Setting Up Interrupt Handlers Interrupt Descriptor Table (IDT) A Default Interrupt Handler Load IDT The Programmable Interrupt Controller (PIC) The Keyboard Interrupt Handler Starting the Console Putting It All Together Chapter 3: SOS1 – Single-tasking SOS 16 Running User Programs GDT Entries Default Exception Handler User Programs Executable Format System Calls Creating User Programs The run Command Understanding a Simple Operating System The DUMB Memory Manager Program Address Space Process Control Block Switching to a User Program Kernel-Mode Stack Chapter 4 : SOS2 – Multi-tasking SOS 24 Running Multiple User Programs NAÏVE Memory Manager Programmable Interval Timer (PIT) Process States Timer Interrupt Handler Sleep System Call The run Command Process Queue The Scheduler The Complete Picture ps Command Chapter 5 : SOS3 – Paging in SOS 31 -
Chapter 1. Origins of Mac OS X
1 Chapter 1. Origins of Mac OS X "Most ideas come from previous ideas." Alan Curtis Kay The Mac OS X operating system represents a rather successful coming together of paradigms, ideologies, and technologies that have often resisted each other in the past. A good example is the cordial relationship that exists between the command-line and graphical interfaces in Mac OS X. The system is a result of the trials and tribulations of Apple and NeXT, as well as their user and developer communities. Mac OS X exemplifies how a capable system can result from the direct or indirect efforts of corporations, academic and research communities, the Open Source and Free Software movements, and, of course, individuals. Apple has been around since 1976, and many accounts of its history have been told. If the story of Apple as a company is fascinating, so is the technical history of Apple's operating systems. In this chapter,[1] we will trace the history of Mac OS X, discussing several technologies whose confluence eventually led to the modern-day Apple operating system. [1] This book's accompanying web site (www.osxbook.com) provides a more detailed technical history of all of Apple's operating systems. 1 2 2 1 1.1. Apple's Quest for the[2] Operating System [2] Whereas the word "the" is used here to designate prominence and desirability, it is an interesting coincidence that "THE" was the name of a multiprogramming system described by Edsger W. Dijkstra in a 1968 paper. It was March 1988. The Macintosh had been around for four years. -
The Arcos Network Operating System
AT-A-GLANCE The ArcOS TM Network Operating System History has repeatedly proven that large industries transition from The ArcOS Advantage vertical integration to best-in-class horizontal segmentation as the urgent business need for innovation outstrips the ability/intent of the incumbents to deliver. The networking industry is in exactly such Agile situation, but it lags the compute and, to a large extent, the storage tiers in terms of this transition. Network operations teams are hampered by inflexible, proprietary systems that are expensive to build, operate, Automated processes accelerate and manage. This model does not fit well into today’s digital business and streamline network expectations of a more agile and innovation-friendly smart infrastructure. provisioning, operations, and deployment. Built-in YANG/ Recently, there has been an explosion of networking merchant silicon OpenConfig support simplifies options in the market that continue to redefine what is possible. integration into existing Additionally, the networking hardware ecosystem continues to evolve frameworks. with a proliferation of readily available leading-edge network platforms from multiple ODMs. But the fundamental problem has been the lack of a modern, scalable, and viable software network operating system that enables the transition from a proprietary, closed approach to an open integration approach. Elastic Arrcus addresses this problem by delivering ArcOS, an independent, open, Linux-based network operating system, as a high-quality alternative Modular software on white box/ to vertically integrated OEMs, to meet and exceed the modern smart brite box network hardware network infrastructure requirements. maximizes flexibility in building a scale-out architecture for a variety of network environments A Modern Network Operating System for the Data Center, (physical, virtual, cloud). -
The Bootstrap the Where Are Wenow?
Dedicated Operating System March2011 Prof. Dr.Antônio AugustoFröhlich http://www.lisha.ufsc.br/Guto Getting ready for the OS for the ready Getting [email protected] LISHA/UFSC The Boot: The March 2011 (http://www.lisha.ufsc.br) 1 Dedicated Operating System March2011 ● ● ● BIOSgot the system ready for BIOSbrought the system on ● Lots of “jmp” so far, no calls, why? ● First instruction fetched ● initializedBIOS a complex architecture Where the stack?Where is 0x7c00 BIST, POST, hooks The Bootstrap Where are we now? we are Where (http://www.lisha.ufsc.br) =>Today class 2 EPOS Bootstrap: m src/boot/pc_boot.S e t ; CONSTANTS s ;============================================================ y ; PHYSICAL MEMORY MAP S ; 0x0000 0000 -+-----------------------+ BOOT_IDT ; | IDT (4 K) | g ; 0x0000 1000 -+-----------------------+ BOOT_GDT ; | GDT (4 K) | n i ; 0x0000 2000 -+-----------------------+ t ; : : a ; | BOOT STACK (23 K) | r ; 0x0000 7c00 -+-----------------------+ BOOTSTRAP_STACK e ; | BOOT CODE (512 b) | BOOTSTRAP_CODE p ; 0x0000 7e00 -+-----------------------+ ; | RESERVED (512 b) | O ; 0x0000 8000 -+-----------------------+ DISK_IMAGE ; | DISK IMAGE (608 K) | d ; : : e ; | | t ; 0x000a 0000 -+-----------------------+ a ; | UNUSED (384K) | c ; : : i ; | | d ; 0x000f f000 -+-----------------------+ e D March 2011 (http://www.lisha.ufsc.br) 3 EPOS Bootstrap: Notes m e t s Code to be ran at real mode (16 bits) y S Interrupts (IDT) ● g At real mode, always at 0x0000 n ● i At protected mode, anywhere (IDTR) t a Segmentation (GDT) r ● e Always -
1. Introduction
Network Operating Systems Partha Dasgupta Department of Computer Science and Engineering Arizona State University Tempe AZ 85287-5406 USA [email protected] [Note: Written in 1997, Appeared in Encyclopedia of Electrical Engineering] 1. Introduction Network Operating Systems extend the facilities and services provided by computer operating systems to support a set of computers, connected by a network. The environment managed by a network operating system consists of an interconnected group of machines that are loosely connected. By loosely connected, we mean that such computers possess no hardware connections at the CPU – memory bus level, but are connected by external interfaces that run under the control of software. Each computer in this group run an autonomous operating system, yet cooperate with each other to allow a variety of facilities including file sharing, data sharing, peripheral sharing, remote execution and cooperative computation. Network operating systems are autonomous operating systems that support such cooperation. The group of machines comprising the management domain of the network operating system is called a distributed system. A close cousin of the network operating system is the distributed operating system. A distributed operating system is an extension of the network operating system that supports even higher levels of cooperation and integration of the machines on the network (features include task migration, dynamic resource location, and so on) (1,2). An operating system is low-level software controlling the inner workings of a machine. Typical functions performed by an operating system include managing the CPU among many concurrently executing tasks, managing memory allocation to the tasks, handling of input and output and controlling all the peripherals. -
Computing :: Operatingsystems :: DOS Beyond 640K 2Nd
DOS® Beyond 640K 2nd Edition DOS® Beyond 640K 2nd Edition James S. Forney Windcrest®/McGraw-Hill SECOND EDITION FIRST PRINTING © 1992 by James S. Forney. First Edition © 1989 by James S. Forney. Published by Windcrest Books, an imprint of TAB Books. TAB Books is a division of McGraw-Hill, Inc. The name "Windcrest" is a registered trademark of TAB Books. Printed in the United States of America. All rights reserved. The publisher takes no responsibility for the use of any of the materials or methods described in this book, nor for the products thereof. Library of Congress Cataloging-in-Publication Data Forney, James. DOS beyond 640K / by James S. Forney. - 2nd ed. p. cm. Rev. ed. of: MS-DOS beyond 640K. Includes index. ISBN 0-8306-9717-9 ISBN 0-8306-3744-3 (pbk.) 1. Operating systems (Computers) 2. MS-DOS (Computer file) 3. PC -DOS (Computer file) 4. Random access memory. I. Forney, James. MS-DOS beyond 640K. II. Title. QA76.76.063F644 1991 0058.4'3--dc20 91-24629 CIP TAB Books offers software for sale. For information and a catalog, please contact TAB Software Department, Blue Ridge Summit, PA 17294-0850. Acquisitions Editor: Stephen Moore Production: Katherine G. Brown Book Design: Jaclyn J. Boone Cover: Sandra Blair Design, Harrisburg, PA WTl To Sheila Contents Preface Xlll Acknowledgments xv Introduction xvii Chapter 1. The unexpanded system 1 Physical limits of the system 2 The physical machine 5 Life beyond 640K 7 The operating system 10 Evolution: a two-way street 12 What else is in there? 13 Out of hiding 13 Chapter 2.