This section of the memory is also referred to as backup storage.
The storage capacity of primary storage is not sufficient to store the large volume so secondary storage.
Secondary storage also know as external memory or auxiliary storage not directly accessible by the CPU.
n computer operating systems, demand paging is a method of virtual memory management. In a system that uses demand paging, the operating system copies a disk page into physical memory only if an attempt is made to access it and that page is not already in memory
This section of the memory is also referred to as backup storage.
The storage capacity of primary storage is not sufficient to store the large volume so secondary storage.
Secondary storage also know as external memory or auxiliary storage not directly accessible by the CPU.
n computer operating systems, demand paging is a method of virtual memory management. In a system that uses demand paging, the operating system copies a disk page into physical memory only if an attempt is made to access it and that page is not already in memory
Overview - Functions of an Operating System – Design Approaches – Types of Advanced
Operating System - Synchronization Mechanisms – Concept of a Process, Concurrent
Processes – The Critical Section Problem, Other Synchronization Problems – Language
Mechanisms for Synchronization – Axiomatic Verification of Parallel Programs - Process
Deadlocks - Preliminaries – Models of Deadlocks, Resources, System State – Necessary and
Sufficient conditions for a Deadlock – Systems with Single-Unit Requests, Consumable
Resources, Reusable Resources.
Event management by using cloud computingLogesh Waran
Cloud Computing is the distribution of shared resources over the internet. The way of using cloud computing is to subscribe it, or to be install on a computer directly which makes the user to easily access the software remotely, through a web browser.
Memory management is the act of managing computer memory. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when no longer needed. This is critical to any advanced computer system where more than a single process might be underway at any time
Cellular telephony is designed to provide communications between two moving units, called mobile stations (MSs), or between one mobile unit and one stationary unit, often called a land unit.
This presentation is about Open Source Software, this may be helpful to understand what is open source, why we need open source software and examples of Open Source software.
This Presentation is created by Harishankar Ranagaraj and was presentated at various sessions.
Harishankar Rangaraj is the founder and Director of Open Source Academy India Pvt Ltd.
For any support on Open Source Software you can Contact us.
Open Source Academy Pvt India Ltd,
Email: info@osaipl.com
www.osaipl.com
A seminar presentation on Open Source by Ritwick Halder - a computer science engineering student at Academy Of Technology, West Bengal, India - 2013
Personal Website - www.ritwickhalder.com
Overview - Functions of an Operating System – Design Approaches – Types of Advanced
Operating System - Synchronization Mechanisms – Concept of a Process, Concurrent
Processes – The Critical Section Problem, Other Synchronization Problems – Language
Mechanisms for Synchronization – Axiomatic Verification of Parallel Programs - Process
Deadlocks - Preliminaries – Models of Deadlocks, Resources, System State – Necessary and
Sufficient conditions for a Deadlock – Systems with Single-Unit Requests, Consumable
Resources, Reusable Resources.
Event management by using cloud computingLogesh Waran
Cloud Computing is the distribution of shared resources over the internet. The way of using cloud computing is to subscribe it, or to be install on a computer directly which makes the user to easily access the software remotely, through a web browser.
Memory management is the act of managing computer memory. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when no longer needed. This is critical to any advanced computer system where more than a single process might be underway at any time
Cellular telephony is designed to provide communications between two moving units, called mobile stations (MSs), or between one mobile unit and one stationary unit, often called a land unit.
This presentation is about Open Source Software, this may be helpful to understand what is open source, why we need open source software and examples of Open Source software.
This Presentation is created by Harishankar Ranagaraj and was presentated at various sessions.
Harishankar Rangaraj is the founder and Director of Open Source Academy India Pvt Ltd.
For any support on Open Source Software you can Contact us.
Open Source Academy Pvt India Ltd,
Email: info@osaipl.com
www.osaipl.com
A seminar presentation on Open Source by Ritwick Halder - a computer science engineering student at Academy Of Technology, West Bengal, India - 2013
Personal Website - www.ritwickhalder.com
Fundamentals of Free and Open Source SoftwareRoss Gardler
Introduction to the OSS Watch Business
and Sustainability Models Around Free and Open Source Software. this presentation doesn't deal with the business models, it introduces FOSS and the key licence types.
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Sean Moss-Pultz, an FIC product development manager, introduced the Neo1973 -- and OpenMoko -- as the "Mystery Guest" at the inaugural "Open Source in Mobile" conference in Amsterdam, 2006.
(I do not own the copyright of this material.)
Linux day 2015 presentation of Open Hardware Source PowerPC NotebookRoberto Innocenti
The CPU Architecture history and how Free Software have changed the rigid dependency of Hardware from Proprietary Software.
How now it is possible a PowerPC Notebook thanks to Free Software and Open Hardware
- some minor update at may 2016
More information http://www.powerpc-notebook.org/en/
Laptops and servers are running Linux based free software just fine these days. But what about the small and powerful devices in our pockets that we carry everywhere?
Can we achieve the same level of freedom and choice on smart phones? Can we make that usable for everyone?
This talk gives a short overview about the current state of Linux on mobile devices.
Encrypted Traffic in Egypt - an attempt to understandAhmed Mekkawy
UPDATE: The video is added after the last slide.
After OONI report about internet censorship in Egypt, I'm publishing some technical logs that discusses the existence of an active DPI with MITM capabilities in Egypt.
Securing Governmental Public Services with Free/Open Source Tools - Egyptian ...Ahmed Mekkawy
There's a common misconception that Free/Open Source Software is of significantly less security than propitiatory software. This was proven wrong in many occasions, and the speaker was the one behind one of these occasions in a nation-level project, which was the Egyptian Elections for seven consecutive rounds, starting the March 2011 referendums until the latest presidential elections in 2014.
My presentation in the OpenData day organized by GDG in Mushtarak TechHub in Cairo, Egypt. at March 12nd 2016. It's mainly talking about why governments should go for opening its data and the benefits on the government, NGOs, businesses, and indeveduals.
Spirula Systems's presentation in RiseUp summit 2015, talking about the benefits of using full DevOps automation to implement infrastructure as a code concept, with a basic ansible tutorial and quick docker overview.
شركة سبيرولا للأنظمة والجمعية المصرية للمصادر المفتوحةAhmed Mekkawy
عرضى التقديمى فى اجتماع منظمة الأليكسو فى يناير 2013 بخصوص البرمجيات الحرة مفتوحة المصدر، عن شركة سبيرولا للأنطمة وعن الجمعية المصرية للمصادر المفتوحة OpenEgypt
My presentation in "ICT in our lives" in Faculty of Commerce, Alexandria University, Dec 2013
Trying to understand the IT industry trends in the lights of the game theory, with a focus on cloud computing and FOSS.
Why Cloud Computing has to go the FOSS wayAhmed Mekkawy
This presentation tries to show the trends of software industry to reach the conclusion that cloud computing as a concept is inevitable, and having them as open clouds in inevitable as well.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
2. What's SFD?
● Software Freedom Day (SFD) is a worldwide
celebration of Free and Open Source
Software (FOSS).
3. What will we talk about today
● Brief history about Free Software movement.
● Some Concepts
● FOSS in the future
● A strategic look
4. History of GNU
● Richard Stallman (RMS)
● A printer driver ??
● What's GNU? Gnu's Not Unix :)
● A project to stop companies
monopoly of our computers.
5. Linux
● Linus Trovalds, the finnish guy.
● Freax? No thanks, linux is better :)
● Initially a terminal emulator, then
a kernel.
● Tux, the official mascot.
6. GNU/Linux evolution in
the first 8 years
8,000,000 1,600,000
7,000,000 1,400,000
6,000,000 1,200,000
Lines of Code
Users
5,000,000 1,000,000
4,000,000 800,000
3,000,000 600,000
2,000,000 400,000
1,000,000 200,000
0 0
1991 1992 1993 1994 1995 1996 1997 1998 (ver
(ver0.01) (ver0.96) (ver0.99) (ver1.0) (ver1.2) (ver2.0) (ver2.1) 2.1.11)
8. FOSS is not only in Software
● Wikipedia.org
● OSWD.org (OpenSource Web Designs)
● OpenCores.org (hardware)
● Open Cola
● Open Data ( scientific data)
● ChemCollective.org
9. Quote
● You can’t better the world by simply talking to
it. Philosophy to be effective must be
mechanically applied.
● Buckminster Fuller
10. Some Concepts
● Unix
● BSD
● GNU tools
● Linux kernel
● GNU/Linux
● GNU OS (GNU/Hurd, Debian GNU/Hurd)
● Debian GNU/kFreeBSD
11. Philosophy
● “Free software” is a matter of liberty, not price.
To understand the concept, you should think
of “free” as in “free speech,” not as in “free
beer.”
● Open Source is a development methodology;
Free Software is a social movement.
● http://www.gnu.org/philosophy/
12. 4 Freedoms
● The freedom to run the program, for any purpose
(freedom 0).
● The freedom to study how the program works, and
adapt it to your needs (freedom 1). Access to the
source code is a precondition for this.
● The freedom to redistribute copies so you can help
your neighbor (freedom 2).
● The freedom to improve the program, and release
your improvements to the public, so that the whole
community benefits (freedom 3). Access to the
source code is a precondition for this.
13. Licensing
● Copyleft.
● GPL: grants the 4 freedoms, with other stuff
too.
● CreativeCommons: where GPL can't be used.
● Others: BSD license, Apache license, … etc.
14. GNU/Linux Distributions
● It's an OS built based on Linux using GNU tools
and lots of other FOSS projects.
● Most famous ones currently are:
– Debian
– Ubuntu
– RHEL (RedHat) / CentOS
– Fedora
● Currently active arabic distro is Ojuba and Joatha,
the discontinued ones are alot, though.
15. FOSS Community & LUG
● If you didn't get it yet, free software can't be
made with individuals, it needs a big
community as it's based on code
contributions.
● Public recognition in such communities is a big
motive for lots of people.
● LUGs are local communities centered about
FOSS, like EGLUG.org (Egypt GNU/Linux
Users Group).
16. FOSS communities
in Egypt
● Linux Egypt
● EGLUG.org
● LinuxAC.org
● Ubuntu Egypt
● OSUM
● FSF arabia, will it happen someday?
17. Quote
● You never change things by fighting the
existing reality. To change something, build a
new model that makes the existing model
obsolete.
● Buckminster Fuller
18. Future of FOSS
● PCs:
– GNU/Linux is gaining ground, rising quickly in usability in the
last few years (which mainly was its drawback).
– Companies jumped in (Google Chrome OS).
● Embedded systems:
– Gaining ground as currently writing an OS especially for an
embedded system is not worth it in most of cases, simply
install linux in lots of current systems.
● Mobile devices:
– The next (or current?) hype for linux. Android is linux based.
But Maemo/Meego is the really interesting thing:
Linux+GNU+Debian stack+X+Gnome+QT
19. Quote
● First they ignore you, then they ridicule you,
then they fight you, then you win.
● Mahatma Gandhi
20. A Strategic look
● Our country is low on financial resources,
which doesn't give us lots of fields to success
at.
● If we look at the software field without the
FOSS, it's already dominated by big players.
We can't compete with them cause we don't
know the know-how of operating systems,
database engines, .. etc. All we can do is
some websites and somethings like that, but
we can't touch the core technologies.
21. A Strategic look (Cont'd)
● FOSS gives us the knowledge, and IT doesn't mainly
rely on big finance.
● If we tried to work with proprietary software, we will be
salesmen for the big players (For example who
creates a website using .net and SQL server, forces
his client to buy these licenses).
● The know-how gives us the ability to enhance the
current solutions and even create our own. So we
won't be limited to waiting for new releases of
proprietary software.
● We shouldn't be controlled by a certain company/entity.
22. What's in it for me?
● End user: better and cheaper software.
● Developer: very big learning resource, and
technologies in continuous development.
● An enterpruneur / business guy: dramatically
lower costs, having better customization,
more easy to create your own product or
provide your services.
23. Bottom Line
● You got freedoms, it's your right. Use them,
and ask for them.
● You can help, so please contribute.
● Free Software is a social movement, it's an
idea you can apply within your life outside the
software prespective.
24. To know more
● http://www.gnu.org
● http://fsf.org
● http://eglug.org
● Revolution OS: the movie.