A computer network is a collection of connected computing devices that communicate and share resources. Connections can be physical wires or cables, or wireless using radio waves or infrared signals. Basic components of a network include terminals, communication channels, computers, software, processors, and devices like modems and multiplexers. There are different types of networks including local area networks (LANs), wide area networks (WANs), and the Internet. Networks rely on protocols like TCP/IP to transmit data and packet switching to route messages between nodes.
UNIT II MEDIA ACCESS & INTERNETWORKING 9
Media access control – Ethernet (802.3) – Wireless LANs – 802.11 – Bluetooth – Switching and bridging – Basic Internetworking (IP, CIDR, ARP, DHCP,ICMP )
This tutorial helps you to learn about Computer Network.
Key Concepts:
What is a computer network?, Types of network, Packets, Switching, LAN, WAN, MAN, Internet Connections, Who owns the internet?
UNIT II MEDIA ACCESS & INTERNETWORKING 9
Media access control – Ethernet (802.3) – Wireless LANs – 802.11 – Bluetooth – Switching and bridging – Basic Internetworking (IP, CIDR, ARP, DHCP,ICMP )
This tutorial helps you to learn about Computer Network.
Key Concepts:
What is a computer network?, Types of network, Packets, Switching, LAN, WAN, MAN, Internet Connections, Who owns the internet?
This tutorial help you to learn about Computer Network.
Key Concepts:
Protocol Layers,
Advantages of Layering.
Protocols,
Open System Protocols,
Network Protocols,
Internet Protocol Stack,
Postal Network,
Protocol Layering & Data
For more detail visit Tech Blog:
https://msatechnosoft.in/blog/
This tutorial helps you to learn about Computer Network.
Key Concepts:
ISO OSI reference model, Service Architecture, Reference Architecture, 7 Layers of OSI, OSI Layers Protocol Stack, physical Layer, Data Link Layer, Network Layer, Transpost Layer, Session Layer, Presentation Layer, Application Layer
For more detail visit our Tech Blog:
https://msatechnosoft.in/blog/tech-blogs/
Introduction to the Network Layer: Network layer services, packet switching, network layer performance, IPv4 addressing, forwarding of IP packets, Internet Protocol, ICMPv4, Mobile IP Unicast Routing: Introduction, routing algorithms, unicast routing protocols. Next generation IP: IPv6 addressing, IPv6 protocol, ICMPv6 protocol, transition from IPv4 to IPv6. Introduction to the Transport Layer: Introduction, Transport layer protocols (Simple protocol, Stop-and-wait protocol, Go-Back-n protocol, Selective repeat protocol, Bidirectional protocols), Transport layer services, User datagram protocol, Transmission control protocol
This Presentation consists of various Network Devices
Hub, Router, Repeater, Bridge, Brouter, Gateway, NIC etc. It is very helpful for B.tech, BCA, MCA, M.Tech students and for those who is interested in networking.
This tutorial helps you to learn about Computer Network.
Key Concepts:
TCP/IP,
High Level Protocols,
MIME Types,
Network Firewall,
Network Addresses,
Domain Name Server (DNS)
For more detail visit our Tech Blog:
https://msatechnosoft.in/blog/
Myassignmenthelpers.com is an Online service provider for Computer Network assignments & homework problems. Our online experts provide Computer Network Assignment help & Computer Network homework help with aims to help college students across the globe. Our writers provide you unique data along with a plagiarised report so that you can ensure that your data is unique. Our writers are available 24*7. Please send your complete requirements at support@myassignmenthelpers.com or else attach on the website. You can also discuss the requirements with our chat agent.
This tutorial help you to learn about Computer Network.
Key Concepts:
Protocol Layers,
Advantages of Layering.
Protocols,
Open System Protocols,
Network Protocols,
Internet Protocol Stack,
Postal Network,
Protocol Layering & Data
For more detail visit Tech Blog:
https://msatechnosoft.in/blog/
This tutorial helps you to learn about Computer Network.
Key Concepts:
ISO OSI reference model, Service Architecture, Reference Architecture, 7 Layers of OSI, OSI Layers Protocol Stack, physical Layer, Data Link Layer, Network Layer, Transpost Layer, Session Layer, Presentation Layer, Application Layer
For more detail visit our Tech Blog:
https://msatechnosoft.in/blog/tech-blogs/
Introduction to the Network Layer: Network layer services, packet switching, network layer performance, IPv4 addressing, forwarding of IP packets, Internet Protocol, ICMPv4, Mobile IP Unicast Routing: Introduction, routing algorithms, unicast routing protocols. Next generation IP: IPv6 addressing, IPv6 protocol, ICMPv6 protocol, transition from IPv4 to IPv6. Introduction to the Transport Layer: Introduction, Transport layer protocols (Simple protocol, Stop-and-wait protocol, Go-Back-n protocol, Selective repeat protocol, Bidirectional protocols), Transport layer services, User datagram protocol, Transmission control protocol
This Presentation consists of various Network Devices
Hub, Router, Repeater, Bridge, Brouter, Gateway, NIC etc. It is very helpful for B.tech, BCA, MCA, M.Tech students and for those who is interested in networking.
This tutorial helps you to learn about Computer Network.
Key Concepts:
TCP/IP,
High Level Protocols,
MIME Types,
Network Firewall,
Network Addresses,
Domain Name Server (DNS)
For more detail visit our Tech Blog:
https://msatechnosoft.in/blog/
Myassignmenthelpers.com is an Online service provider for Computer Network assignments & homework problems. Our online experts provide Computer Network Assignment help & Computer Network homework help with aims to help college students across the globe. Our writers provide you unique data along with a plagiarised report so that you can ensure that your data is unique. Our writers are available 24*7. Please send your complete requirements at support@myassignmenthelpers.com or else attach on the website. You can also discuss the requirements with our chat agent.
A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...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.
zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex ProofsAlex Pruden
This paper presents Reef, a system for generating publicly verifiable succinct non-interactive zero-knowledge proofs that a committed document matches or does not match a regular expression. We describe applications such as proving the strength of passwords, the provenance of email despite redactions, the validity of oblivious DNS queries, and the existence of mutations in DNA. Reef supports the Perl Compatible Regular Expression syntax, including wildcards, alternation, ranges, capture groups, Kleene star, negations, and lookarounds. Reef introduces a new type of automata, Skipping Alternating Finite Automata (SAFA), that skips irrelevant parts of a document when producing proofs without undermining soundness, and instantiates SAFA with a lookup argument. Our experimental evaluation confirms that Reef can generate proofs for documents with 32M characters; the proofs are small and cheap to verify (under a second).
Paper: https://eprint.iacr.org/2023/1886
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
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.
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
Get an inside look at the latest Neo4j innovations that enable relationship-driven intelligence at scale. Learn more about the newest cloud integrations and product enhancements that make Neo4j an essential choice for developers building apps with interconnected data and generative AI.
2. Networking
Computer network
A collection of computing devices connected in
order to communicate and share resources
Connections between computing devices can be
physical using wires or cables or wireless using radio
waves or infrared signals
3. Networking…
Node
Any device on a network
Data transfer rate (bandwidth)
The speed with which data is moved from
one place to another on a network
5. Basic Components…
Terminals: end user work station
Telecommunications Channels & Media: Media
over which data are transmitted – coaxial cables,
fiber optics etc.
Computer: carry out their information processing
assignments. Mainframe host computer/server.
5
6. Basic Components…
Telecommunication Software: controls the
telecommunication activities
Telecommunication Processors: to enhance data
communication b/w two points – modems,
message switchers, multiplexers, front end
processors
6
7. Basic Components…
Modems: most common type; convert analog signals to
digital and vice versa.
Message Switchers: device that receives data messages
from terminals, determine their destination and routes
them one by one to the CPU.
Advantages – reduce long distance transmission costs since only
single line is required
Multiplexers : collects messages from many senders, puts
them in order & transmits them thru a broadband; allows
simultaneous transmission
7
8. Basic Components…
Concentrator : a smart multiplexer, can be programmed,
more processing capability (used for load balancing)
Controller : link groups (clusters) of terminals to a
communication channel
Front-end processors: located near the host computer,
relieves the host computer of some of the communications
tasks, so that it can process other applications requests.
8
10. Types of Networks
Local-area network (LAN)
A network that connects a relatively small number of
machines in a relatively close geographical area
Ring topology connects all nodes in a closed loop on
which messages travel in one direction
Star topology centers around one node to which all
others are connected and through which all messages are
sent
Bus topology nodes are connected to a single
communication line that carries messages in both
directions
12. Types of Networks
Wide-area network (WAN)
A network that connects local-area networks over a
potentially large geographic distance
Metropolitan-area network (MAN)
The communication infrastructures that have been
developed in and around large cities
Gateway
One particular set up to handle all communication
going between that LAN and other networks
15. Network Protocols
An agreed-upon format for transmitting
data b/w 2 devices.
Protocol determines the following
Type of error checking
Data compression method
Message completion indicated by sender
Message acknowledgement by receiver
Popular protocols – TCP/IP, HTTP, FTP, SMTP, POP
15
16. Network Architecture
Refer to either h/w, s/w or a combination.
Classification : -
Peer-to-peer architecture – each workstation
has equivalent capabilities & responsibilities
Client/Server architecture – each computer is
either a client or a server.
16
17. Packet Transmission/Switching
Packet
A unit of data sent across a network
Router
A network device that directs a packet between networks
toward its final destination
Packet switching
Messages are divided into fixed-sized, numbered packets;
packets are individually routed to their destination, then
reassembled
19. Hubs
A hub is the place where data converges
from one or more directions and is
forwarded out in one or more directions.
Seen in local area networks
20. Switches
Allow different nodes of a network to
communicate directly with each other.
Allow several users to send information over
a network at the same time without slowing
each other down using Media Access
Control address (MAC address)
21. TCP/IP
Transmission Control Protocol (TCP)
Software that breaks messages into packets, hands
them off to the IP software for delivery, and then
orders and reassembles the packets at their
destination
Internet Protocol (IP)
Software that deals with the routing of packets
through the maze of interconnected networks to
their final destination
21
22. High-Level Protocols
Other protocols build on TCP/IP protocol suite
Simple Mail Transfer Protocol (SMTP) used to specify
transfer of electronic mail
File Transfer Protocol (FTP) allows a user to transfer
files to and from another computer
Telnet used to log onto one computer from another
Hyper Text Transfer Protocol (http) allows exchange
of Web documents
22
Which of these have you used?
23. Firewalls- Network Security
Firewall
A gateway machine and its software that protects a
network by filtering the traffic it allows
Access control policy
A set of rules established by an organization that
specify what types of network communication are
permitted and denied
23
Have your messages ever been
returned undelivered, blocked by a firewall?