The document discusses the OSI model, which is a standard networking framework that defines 7 layers for network communication. Each layer provides services to the layer above it and receives services from the layer below it. The layers are physical, data link, network, transport, session, presentation, and application. The model separates network functions into logical layers to simplify network design, debugging, and management. It allows interoperability between different types of networks and systems.
The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology. Its goal is the interoperability of diverse communication systems with standard protocols. The model partitions a communication system into abstraction layers. The original version of the model defined seven layers.
Here you will learn:
How to Connect two or more devices to share data and information.
What is OSI Model?
Introduction to OSI Model
What is Physical Layer?
Devices used Physical Layer
What is Signal?
Types of Signals?
Analog Signals
Digital SIgnals
What is Transmission Medium?
What Is Switch in Networking?
Networking 7 Layers.
.
Please like and comments your Question and suggestion?
The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology. Its goal is the interoperability of diverse communication systems with standard protocols. The model partitions a communication system into abstraction layers. The original version of the model defined seven layers.
Here you will learn:
How to Connect two or more devices to share data and information.
What is OSI Model?
Introduction to OSI Model
What is Physical Layer?
Devices used Physical Layer
What is Signal?
Types of Signals?
Analog Signals
Digital SIgnals
What is Transmission Medium?
What Is Switch in Networking?
Networking 7 Layers.
.
Please like and comments your Question and suggestion?
OSI layers describes how the data can be send from one parties to another during data communication. it also gives the detailed information of how the data functionally divided into small pieces and reaches the destination.
osi vs tcp/ip
you can get the contents from the slides of forouzan and tanenbaum of computer networking.
application layer
session layer
data link layer
presentation layer
network layer
physical layer
transmission in each osi layer
transmission in each tcp/ip layer
OSI layers describes how the data can be send from one parties to another during data communication. it also gives the detailed information of how the data functionally divided into small pieces and reaches the destination.
osi vs tcp/ip
you can get the contents from the slides of forouzan and tanenbaum of computer networking.
application layer
session layer
data link layer
presentation layer
network layer
physical layer
transmission in each osi layer
transmission in each tcp/ip layer
The OSI Model (Open Systems Interconnection Model) is a conceptual framework used to describe the functions of a networking system. The OSI model characterizes computing functions into a universal set of rules and requirements in order to support interoperability between different products and software. In the OSI reference model, the communications between a computing system are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
TCP/IP Model helps you to determine how a specific computer should be connected to the internet and how data should be transmitted between them. It helps you to create a virtual network when multiple computer networks are connected together. The purpose of the TCP/IP model is to allow communication over large distances.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
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.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
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.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
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/
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.
2. OSI Model
Communication Architecture
Strategy for connecting host computers and other
communicating equipment.
Defines necessary elements for data communication
between devices.
A communication architecture, therefore, defines a
standard for the communicating hosts.
A programmer formats data in a manner defined by
the communication architecture and passes it on to
the communication software.
Separating
communication
functions
adds
flexibility, for example, we do not need to modify the
entire host software to include more communication
devices.
3. OSI Model
Layer Architecture
Layer architecture simplifies the network design.
It is easy to debug network applications in a layered
architecture network.
The network management is easier due to the
layered architecture.
Network layers follow a set of rules, called protocol.
The protocol defines the format of the data being
exchanged, and the control and timing for the
handshake between layers.
4. OSI Model
Open Systems Interconnection
(OSI) Model
International
standard
organization
(ISO)
established a committee in 1977 to develop an
architecture for computer communication.
Open Systems Interconnection
model is the result of this effort.
(OSI)
reference
In 1984, the Open Systems Interconnection (OSI)
reference model was approved as an international
standard for communications architecture.
Term “open” denotes the ability to connect any two
systems which conform to the reference model and
associated standards.
5. OSI Model
OSI Reference Model
The OSI model is now considered the primary
Architectural
model
for
inter-computer
communications.
The OSI model describes how information or data
makes its way from application programmes (such
as spreadsheets) through a network medium (such
as wire) to another application programme located
on another network.
The OSI reference model divides the problem of
moving information between computers over a
network medium into SEVEN smaller and more
manageable problems .
This separation into smaller more manageable
functions is known as layering.
7. OSI Model
OSI: A Layered Network Model
The process of breaking up the functions or tasks of
networking into layers reduces complexity.
Each layer provides a service to the layer above it in
the protocol specification.
Each layer communicates with the same layer’s
software or hardware on other computers.
The lower 4 layers (transport, network, data link and
physical —Layers 4, 3, 2, and 1) are concerned with
the flow of data from end to end through the
network.
The upper four layers of the OSI model (application,
presentation and session—Layers 7, 6 and 5) are
orientated more toward services to the applications.
Data is Encapsulated with the necessary protocol
information as it moves down the layers before
8. OSI Model
Physical Layer
Provides physical interface for transmission of
information.
Defines rules by which bits are passed from one
system to another on a physical communication
medium.
Covers all - mechanical, electrical, functional and
procedural - aspects for physical communication.
Such characteristics as voltage levels, timing of
voltage changes, physical data rates, maximum
transmission distances, physical connectors, and
other similar attributes are defined by physical layer
specifications.
9. OSI Model
Data Link Layer
Data link layer attempts to provide reliable
communication over the physical layer interface.
Breaks the outgoing data into frames and
reassemble the received frames.
Create and detect frame boundaries.
Handle
errors
by
implementing
an
acknowledgement and retransmission scheme.
Implement flow control.
Supports points-to-point as well as broadcast
communication.
Supports simplex, half-duplex or full-duplex
communication.
10. OSI Model
Network Layer
Implements routing of frames (packets) through the
network.
Defines the most optimum path the packet should
take from the source to the destination
Defines logical addressing so that any endpoint can
be identified.
Handles congestion in the network.
Facilitates interconnection between heterogeneous
networks (Internetworking).
The network layer also defines how to fragment a
packet into smaller packets to accommodate
different media.
11. OSI Model
Transport Layer
Purpose of this layer is to provide a reliable
mechanism for the exchange of data between two
processes in different computers.
Ensures that the data units are delivered error free.
Ensures that data units are delivered in sequence.
Ensures that there is no loss or duplication of data
units.
Provides connectionless or connection oriented
service.
Provides for the connection management.
Multiplex multiple connection over a single channel.
12. OSI Model
Session Layer
Session layer provides mechanism for controlling the
dialogue between the two end systems. It defines how to
start, control and end conversations (called sessions)
between applications.
This layer requests for a logical connection to be
established on an end-user’s request.
Any necessary log-on or password validation is also
handled by this layer.
Session layer is also responsible for terminating the
connection.
This layer provides services like dialogue discipline
which can be full duplex or half duplex.
Session layer can also provide check-pointing
mechanism such that if a failure of some sort occurs
between checkpoints, all data can be retransmitted from
the last checkpoint.
13. OSI Model
Presentation Layer
Presentation layer defines the format in which the
data is to be exchanged between the two
communicating entities.
Also handles data compression and data encryption
(cryptography).
14. OSI Model
Application Layer
Application layer interacts with application
programs and is the highest level of OSI model.
Application layer contains management functions to
support distributed applications.
Examples of application layer are applications such
as file transfer, electronic mail, remote login etc.
15. OSI Model
OSI in Action
A message begins at the top
application layer and moves down
the OSI layers to the bottom
physical layer.
As the message descends, each
successive OSI model layer adds a
header to it.
A
header
is
layer-specific
information that basically explains
what functions the layer carried
out.
Conversely, at the receiving end,
headers are striped from the
message as it travels up the
corresponding layers.
18. TCP/IP Model
TCP/IP Model
Application Layer
Application programs using the network
Transport Layer (TCP/UDP)
Management of end-to-end message transmission,
error detection and error correction
Network Layer (IP)
Handling of datagrams : routing and congestion
Data Link Layer
Management of cost effective and reliable data delivery,
access to physical networks
Physical Layer
Physical Media