Networking Fundamentals, Network supporting the way we learn, Network supporting the way we work, Network supporting the way we play,The Importance of Network Standards.
Networking Fundamentals, Network supporting the way we learn, Network supporting the way we work, Network supporting the way we play,The Importance of Network Standards.
Internet and the World Wide Web: What is Internet? Introduction to internet and its applications, E-mail, telnet, FTP, e-commerce, video conferencing, e-business. Internet service providers, domain name server, internet address, World Wide Web (WWW): World Wide Web and its evolution, uniform resource locator (URL), browsers – internet explorer, Netscape navigator, opera, Firefox, chrome, Mozilla. search engine, web saver – apache, IIS, proxy server, HTTP protocol
BASICS OF NETWORKING,THERE TYPES, ISP, MODEM, INTERNET
TO WATCH VIDEO:
https://youtu.be/J7AuuVOjUvs
TO DOWNLOAD VIDEO:
https://computerassignmentsforu.blogspot.com/p/webnetworkclassx.html
Internet and the World Wide Web: What is Internet? Introduction to internet and its applications, E-mail, telnet, FTP, e-commerce, video conferencing, e-business. Internet service providers, domain name server, internet address, World Wide Web (WWW): World Wide Web and its evolution, uniform resource locator (URL), browsers – internet explorer, Netscape navigator, opera, Firefox, chrome, Mozilla. search engine, web saver – apache, IIS, proxy server, HTTP protocol
BASICS OF NETWORKING,THERE TYPES, ISP, MODEM, INTERNET
TO WATCH VIDEO:
https://youtu.be/J7AuuVOjUvs
TO DOWNLOAD VIDEO:
https://computerassignmentsforu.blogspot.com/p/webnetworkclassx.html
Chapter 7 Networks and Communication Devices.docxrobertad6
Chapter 7
Networks and
Communication Devices
Key Topics
Basic Concepts & Terminology
Types of Networks
Network Media
Network Protocols
Network Hardware
2
Basic Concepts & Terminology
Network is a collection of objects or people which have some common attributes.
Computer Network is a collection of computers and other hardware devices which are connected together.
In a computer network, users can:
Share hardware (printers, scanners etc.)
Share software (Google, MyGUST, Office365 etc.)
Exchange Data (Dropbox, iCloud, OneDrive etc.)
Electronically Communicate with Others (text messaging, voice messaging, video messaging etc.)
3
Basic Concepts & Terminology
When devices are connected and ready to send/receive data, they are said to be Online.
When devices are not connected or not ready to send/receive data, they are said to be Offline.
When a device sends data, the action is also called Transmission.
When data is sent to a large number of devices, it is called Broadcast.
When data is copied to another device, the action is called Upload.
When data is copied from another device, the action is called Download.
4
Architecture is the way networks are designed to communicate
Client Server Networks
Client: PC or other
device on the network
that requests and
utilizes network
resources
Server: Computer
dedicated to
processing client
requests
5
Types of Networks – Architecture
Peer-to-Peer (P2P) networks have all computers at the same level
Internet peer-to-peer computing is performed via Internet
6
Types of Networks – Architecture
Local Area Network (LAN)
Small geographical area (office, campus, etc.)
Personal Area Network (PAN)
Connects personal devices for one individual,
such as his or her portable PC, mobile phone, and
portable printer
Wide Area Network (WAN)
Large geographical area (Internet)
Metropolitan Area Network (MAN)
Serves a metropolitan area
Municipal Wi-Fi projects
7
Types of Networks – Location
Intranet
Internal or Private to an organization
Is only accessible to members of the organization
SIS, Email, MyGUST are Intranet applications
Internet
Is a Public network
Is accessible to every one
GUST website is an Internet application
Extranet
Internal network providing some access to outsiders
Individuals outside the organization have limited access
Examples of Extranet?
8
Types of Networks – Accessibility
Types of Networks – Others
Virtual Private Network
Secure path over the Internet that
provide authorized users a secure
means of accessing a private network.
Sensor Networks
Contain sensors that respond to a stimulus and
generate an electrical signal that can be measured or interpreted.
Smart thermostats, lights, locks, gates are examples of sensor networks.
GUST ID is also used as part of sensor network which recognizes cards through RFID.
9
Network Media
Wired Media
The PC is physically cabled to the network
Common in schools, businesses, and government facilities
.
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 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
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/
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.
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.
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
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
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
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.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
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.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...
Communications & Networks
1. +
Communications and
Networks
Internet Resources
2. +
Unit Objectives
After completing this chapter you will be able to:
Discuss the purpose of the components required for successful
communications and identify various sending and receiving devices
Describe various uses of computer communications
List the advantages of using a network, and differentiate among
LANs, MANs and WANs
Differentiate between client/server and peer-to-peer networks, and
describe how P2P networks work
3. +
Unit Objectives
Differentiate among a star, bus, and ring network
Describe the various network communications standards
Explain the purpose of communications software
Describe commonly used communications devices
Discuss different ways to set-up a home network
Describe various physical and wireless transmission media
5. +
Communications
Computer communications describes a process in which two or
more computers or devices transfer data, instructions, and
information
Today, even the smallest devices can communicate with each
other – often via the Internet
6. +
Communications
For successful communications you need:
A sending device that initiates an instruction to transmit
data, instructions or information
A communication channel or transmission media on which the
data, instructions, or information travel
A communication device that connects the communications channel
to a receiving device that accepts the transmission
7. +
Uses of Communications
Communications and Networks
8. +
Uses of Communications
Computer communications are everywhere
Many require that you subscribe to an Internet access provider
With others, organizations such as a business or school provide the
communications services
9. +
Summary of Communications
Previously Discussed
Communications Previously Discussed
Blogs Newsgroups
Chat Rooms RSS
E-Mail Video Conferencing
Fax VoIP
FTP Web 2.0
Instant Messaging Wikis
10. +
Wireless Messaging Services
Users can send and receive wireless messages to and from
smartphones, cell phones, and handheld game consoles using
three techniques
Text messaging
Picture/Video messaging, and
Wireless Instant Messaging
The type of messaging depends on the on the services offered
by your wireless Internet service provider, or WISP
11. +
Text Messaging
A mobile device with text messaging allows users to send and
receive short text messages on a phone or other mobile device
Services allow the user options to send and receive:
Mobile to Mobile
Mobile to E-Mail
Web to Mobile, and
Mobile to Provider
12. +
Picture/video messaging
With picture messages users can pictures and sound files, as
well as short text messages, to another device
With video messages users can send short, about :30, videos
is addition to other type of messages
Smart phones and other devices using MMS, typically have a
built-in camera
As a consumer, you should be aware of memory availability and
camera quality
13. +
Wireless Instant Messaging
Wireless instant messaging (IM) is a real-time communications
service that allows mobile devices to exchange messages with
other online users
Some WISPs partner with IM services
AT&T allows communications through AIM, Windows Live
Messenger, and Yahoo! Messenger
14. +
Wireless Access Points
People connect everyday to wireless access points using their
mobile devices to access Internet-based services
Two Types:
Hot Spots, &
Mobile Wireless Networks
15. +
Hot Spots
Is a network that provides wireless Internet connections to
mobile devices
Three technologies
Wi-Fi (local, within a building or room)
WiMax (regional, withing a community)
Bluetooth (location-based hot spots)
Some hot spots are free, schools & coffee shops, and some are
subscription-based
16. +
Mobile Wireless Network
Provided by cell phone companies, for their devices to access
their networks
Coverage and speed depends on the carrier
Most common speed is 3G
“4G” networks are becoming available
17. +
GPS
Short for Global Positioning System
Uses satellite triangulation to pinpoint a location usually within
10-100 meters
Examples
Smart phones
Car Navigation systems
Handheld systems for hiking
Access to additional features
18. +
Geocaching
Geocaching is a real-world outdoor treasure hunting game.
Players try to locate hidden containers, called
geocaches, using GPS-enabled devices and then share their
experiences online.
www.geocaching.com
19. +
Collaboration
People use the Internet to collaborate, or work together online
Methods of collaboration
E-mail
Collaborative Software
Document Management Systems
20. +
E-mail
Oldest form of collaboration
Users send information and documents back and forth through
their e-mail accounts
Pros
Quick and inexpensive
Cons
Creates multiple versions of a document
Information can get lost in the mix
21. +
Collaborative Software
Tools that enable users to share documents via online
meetings and communicate with other connected users
Sometimes called a Web Conference or Web Meeting
Examples
Microsoft Groove or Office Live Meeting
WebEx
Google Apps
GoToMeeting
22. +
Document Management Systems
Provides storage and management of a users documents
Users can be granted access to each others documents
Only one document exists, not multiple versions
Examples
Windows Live SkyDrive
Google Docs
23. +
Cybercafés
Also know as an Internet Café, is a location, usually a
coffeehouse or restaurant, that provides Internet access to its
customers
Examples
Starbucks
Burger King
McDonalds
24. +
Web Services
A Web service is a method of communication between two
electronic devices over the web.
The service can be integrated into any web page so users can
easily access it
They do not require a specific programming language, operating
system or web browser
Examples
Google Apps, Google Cloud Print, Office 365
26. +
Networks
A network is a collection of computers and devices connected
together via communications devices and transmission media
A network can be internal to an organization or span the entire
world
Why network?
Facilitating communications
Sharing hardware
Sharing data and information
Sharing software
Transferring funds
27. +
LANs, MANs, & WANs
Networks can be classified is three categories
1. Local Area Network
2. Metropolitan Area Network
3. Wide Area Network
28. +
Local Area Network (LAN)
A network that connects computers and devices in a limited geographical
area, such as a home, computer lab, or office building
29. +
WLAN
A wireless LAN is a LAN that uses no physical wires
Computers and devices that access a WLAN must have built-in
wireless capability, or an appropriate adapter
Very often WLANs are setup side-by-side with a traditional LAN
30. +
Metropolitan Area Network (MAN)
A high-speed network that connects local area networks in a
metropolitan area such as a city or town
A MAN typically includes one or more LANs but covers a
smaller geographic area then a WAN
Managed by a Network Provider such as a state
government, telephone company, or cable provider
31. +
Wide Area Network (WAN)
Network that covers a large
geographic area, such as a
city, country or the world
A WAN can be one large
network or consist of two or
more LANs
The Internet is the worlds
largest WAN
32. +
Network Architectures
The design of computers, devices, and media in a
network, sometimes called network architecture, is categorized as
either client/server or peer-to-peer
33. +
Client/Server
On a client/server network, one or more computers act as a
server, and the other computers request services from the
server
A server, sometimes called a host computer, control access to
the hardware, software, and other resources on the network
The clients are other computers or mobile devices on the
network that rely on the server for its resources
34. +
Peer-to-Peer
Simple, inexpensive network
that typically connects fewer
than 10 computers or other
devices
Each computer, or peer, has
equal responsibilities and
capabilities
Each computer stores files on
its own hard drives for sharing
Ideal for very small businesses
and home networks
35. +
Internet Peer-to-Peer
P2P describes an Internet network on which users access each
other’s hard disks and exchange files
Sometimes called a file-sharing network
Examples:
BitTorrent
Gnutella
Kazaa
LimeWire
Responsible for the majority of illegal file-sharing on the
Interent