The document describes the OSI model, which is a standard networking framework that defines 7 layers of communication. The physical layer deals with physical communication and data transmission over a medium. The data link layer handles frame creation and error checking. The network layer implements routing and logical addressing. The transport layer provides reliable data delivery and flow control between applications. The session layer manages dialogues and connections between devices. The presentation layer defines data formats. The application layer supports application software and programs. Overall, the OSI model provides a layered approach to network communication and data transfer.
OSI (Open Systems Interconnection) is defined as reference model that is used for how applications can impart over the network. It is the conceptual model that is used for comprehension relationships. Copy the link given below and paste it in new browser window to get more information on OSI Model:- www.transtutors.com/homework-help/computer-science/osi-model.aspx
OSI (Open Systems Interconnection) is defined as reference model that is used for how applications can impart over the network. It is the conceptual model that is used for comprehension relationships. Copy the link given below and paste it in new browser window to get more information on OSI Model:- www.transtutors.com/homework-help/computer-science/osi-model.aspx
The Open Systems Interconnection (OSI) model (ISO/IEC 7498-1) is a conceptual model that characterizes and standardizes the internal functions of a communication system by partitioning it into abstraction layers. The model is a product of the Open Systems Interconnection project at the International Organization for Standardization (ISO).
OSI Model - Open Systems InterconnectionAdeel Rasheed
The Open Systems Interconnection (OSI) reference model has served as the most basic elements of computer networking since the inception in 1984. The OSI Reference Model is based on a proposal developed by the International Standards Organization (ISO).
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 its underlying internal structure and technology.
The Open Systems Interconnection (OSI) model (ISO/IEC 7498-1) is a conceptual model that characterizes and standardizes the internal functions of a communication system by partitioning it into abstraction layers. The model is a product of the Open Systems Interconnection project at the International Organization for Standardization (ISO).
OSI Model - Open Systems InterconnectionAdeel Rasheed
The Open Systems Interconnection (OSI) reference model has served as the most basic elements of computer networking since the inception in 1984. The OSI Reference Model is based on a proposal developed by the International Standards Organization (ISO).
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 its underlying internal structure and technology.
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.
Practical Wireless, Ethernet and TCP/IP NetworkingLiving Online
This manual commences with an overview of wireless communications and how radio works, followed by a practical discussion of Ethernet as this is always a key ingredient in a successful wireless implementation strategy. It will give you a clear understanding of the choices available to you in designing and implementing your own wireless and associated Ethernet networks.
MORE INFORMATION: http://www.idc-online.com/content/practical-wireless-ethernet-and-tcpip-networking-26?id=154
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
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/
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.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
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.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
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.
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
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.
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 (OSI) reference model is
the result of this effort.
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 network
transit.
8. OSI Model
Physical Layer
Provides physical
information.
interface
for
transmission
of
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
1.
Application layer interacts with application programs
and is the highest level of OSI model.
2.
Application layer contains management functions to
support distributed applications.
3.
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