Basic knowledge,Feature and Services of
>> Repeater
>> Hub
>> Switch
>> Bridge
>> Router
>> Gateway
>> Firewall
Firewall: An entity that prevents a specific type of information from moving between outside world (untrusted network) and inside world (trusted network).
This is a power point Presentation about wifi and the various standards of IEEE used for the transmission of data over the wireless network.
You must have encountered with term 802.11.a/b/g/n of your wireless network device.
This presentation will break the ice for your knowledge about those terms, their standards and how they get connected.
Let's Get Started.
The IEEE 802 is a family of IEEE standards dealing with Local Area Networks and Metropolitan Area Networks. The IEEE 802 family of standards is maintained by the IEEE 802 LAN/MAN Standards Committee (LMSC).
The most widely used standards are for the Bridging and Virtual Bridged LANs (802.1), Ethernet family (802.3), Token Ring (802.5) and Wireless LAN (802.11).
Spread spectrum is a communication technique that spreads a narrowband communication signal over a wide range of frequencies for transmission then de-spreads it into the original data bandwidth at the receive.
WLAN is a wireless computer network that links two or more devices (using-spectrum or OFDM radio) within a limited area such as a home, school, computer laboratory, or office building.
WLAN is a marketed under the Wi-Fi brand name.
Wireless LANs have become popular in the home due to ease of installation and use.
This is a power point Presentation about wifi and the various standards of IEEE used for the transmission of data over the wireless network.
You must have encountered with term 802.11.a/b/g/n of your wireless network device.
This presentation will break the ice for your knowledge about those terms, their standards and how they get connected.
Let's Get Started.
The IEEE 802 is a family of IEEE standards dealing with Local Area Networks and Metropolitan Area Networks. The IEEE 802 family of standards is maintained by the IEEE 802 LAN/MAN Standards Committee (LMSC).
The most widely used standards are for the Bridging and Virtual Bridged LANs (802.1), Ethernet family (802.3), Token Ring (802.5) and Wireless LAN (802.11).
Spread spectrum is a communication technique that spreads a narrowband communication signal over a wide range of frequencies for transmission then de-spreads it into the original data bandwidth at the receive.
WLAN is a wireless computer network that links two or more devices (using-spectrum or OFDM radio) within a limited area such as a home, school, computer laboratory, or office building.
WLAN is a marketed under the Wi-Fi brand name.
Wireless LANs have become popular in the home due to ease of installation and use.
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.
A network switch is a device used to connect network segments or network devices.Network switch receive messages and send them to the targeted audience.It is a telecommunication device that uses the packet switching to receive,process and forward data to the destination address.
This presentation is about the introduction to network switch layer technology. A network switch is a device tha is used to connect different segments over the network.This ppt includes introduction to switch,types of switches or layer specification,advantages and disadvantages of switch..
I hope it will be very helpful for the engineering students and the others who are interested to search in deep about network switch.
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.
“Hajar Bochor Dhore” in English term “Symphony of Agony” is written by a famous novelist Jahir Raihan. This novel was first published on 1964. This novel represents the image of rural
life in our country based on 19th century. It also focuses on the darkness of this prejudice, child marriage, polygamy, violence against women in a society of that time.
Jahir Raihan is a renowned novelist of 19th century. Among all books of author “Hajar Bochor Dhore” is the best creation of Jahir Raihan. He depicts the image of society of rural area of 19th century so clearly in the novel.
3 Idiots is a bollywood comedy-drama film edited and directed by Rajkumar Hirani and
produced by Vidhu Vinod Chopra. The film is constructed by Vinod Chopra Film production.
Casted by Amir Khan, R.Madhavan, Sharman Joshi, Boman Irani, Kareena Kapoor and more.
The story of the movie is loosely adapted from the novel ‘Five Point Someone’ by Chetan
Bhagat. The story in the film mainly happens at famous engineering college of India named
Imperial College of Engineering. It is the highest grossing bollywood film for all time. It is also
the first Indian movie which is officially released on YouTube.
Some important SQL queries and solutions are provided here.
Create, Update, Insertion, Deletion of Database.
Create table, Find, join, natural join, maximum, minimum, minus, grouping etc.
Gauss Elimination Method With Partial PivotingSM. Aurnob
Gauss Elimination Method with Partial Pivoting:
Goal and purposes:
Gauss Elimination involves combining equations to eliminate unknowns. Although it is one of the earliest methods for solving simultaneous equations, it remains among the most important algorithms in use now a days and is the basis for linear equation solving on many popular software packages.
Description:
In the method of Gauss Elimination the fundamental idea is to add multiples of one equation to the others in order to eliminate a variable and to continue this process until only one variable is left. Once this final variable is determined, its value is substituted back into the other equations in order to evaluate the remaining unknowns. This method, characterized by step‐by‐step elimination of the variables.
Gauss Seidel Method:
Goal and purposes:
The main goal and purpose of the program is to solve a system of n linear simultaneous equation using Gauss Seidel method.
This Slides includes:
Goal and purpose, Description, Algorithm, C-code, Screenshot etc.
Digital search tree is one kind of binary tree which contains only binary data.
If the bit of DST starts with 0 then it is in left sub-tree and if the bit starts with 1 then it is in right sub-tree and this process works recursively.
Online communities of people who share interests and activities.
Who are interested in exploring the interests activities of others.
>> Social Network
>> User generated content
>> Social bookmarking
Personal Identifying Information refers to any information that can be used to identify an individual. When personal identifiable info or secret and sensitive info are gathered, used and then destroyed in digital from then the privacy concerns exists.
Storing, reusing, arrangement to third parties and displaying of information regarding to a person via Internet involves the right of one’s privacy concern then it is called Internet privacy. For example, To typically identify a specific person two factors are unique enough those are age and physical address without exposing their name.
By this privacy concerns, the term “Right to be Forgotten” issue rises up.
Use Case, Activity, Sequence, Class Diagram of Restaurant Management System.
Poster Design of Restaurant Management System.
By- CSE Students of East West University
Use Case, Activity, Sequence, Class Diagram of Hospital Management System.
Poster Design of Hospital Management System.
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Poster Design of Restaurant Management System.
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Use Case, Activity, Sequence, Class Diagram of Doctor Appointment Management System.
Poster Design of Doctor Appointment Management System.
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Use Case, Activity, Sequence, Class Diagram of Bus Ticket Management System.
Poster Design of Bus Ticket Management System.
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Use Case, Activity, Sequence, Class Diagram of Blood Bank Management System.
Poster Design of Blood Bank Management System.
By- CSE Students of East West University
Use Case, Activity, Sequence, Class Diagram of Bank Management System.
Poster Design of Bank Management System.
By- CSE Students of East West University
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
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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.
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
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.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
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SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdfPeter Spielvogel
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• What is SAP Fiori and why it matters to you
• How a better user experience drives measurable business benefits
• How to get started with SAP Fiori today
• How SAP Fiori elements accelerates application development
• How SAP Build Code includes SAP Fiori tools and other generative artificial intelligence capabilities
• How SAP Fiori paves the way for using AI in SAP apps
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GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
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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.
National Security Agency - NSA mobile device best practices
Study of Network Devices
1. Study of Network Devices in Detail
1.Repeater:
Basic knowledge,Feature and Services:
>> A repeater is a device that operates only at the Physical layer.
>> A repeater can be used to increase the length of network by elemenating the effect
of attenuation on the signal.
>> It connects two segments of the same network, overcoming the distance
limitations of the transmission media.
>> A repeater forwards every frame; It has no filtering capability.
>> A repeater is a regenerator not an amplifier.
>>Repeaters can connect segments that have the same access method.
(CSMA/CD,Token Passing, Polling etc.)
2. 2. Hub:
Basic knowledge,Feature and Services:
>> A hub is used as a central point of connection among media segments.
>> It works at Physical layer of the OSI model.
>> It cannot filter data. Data packets are sent to all connected devices and there is no
intelligence to find out the best path for data packet which then leads to inefficiencies
and wastage.
>> Cables from network devices plug in to the port on the hub.
>> Types of hubs :
Passive hub: A passive hub is just a connector. It connects wires coming from
different branches. The signal pass through a passive hub without regeneration
or amplification.
Active hub: They regenerate or amplify the signal before ther are
retransmitted. It is known as Multiport repeater also.
>> Hubs are used on a small networks where data transmission is not very high.
3. 3. Switch:
Basic knowledge,Feature and Services:
>> A network switch is a computer networking devices that is used to connect
devices together on a computer network by performing a form of packet switching.
>> Types of Switch :
Two layer switch : It operates at Physical and data link layer. eg. Bridge.
Three layer switch : It operates at network layer. eg. Router.
>> It is considered more advanced than a hub because a switch will only send a
message to the device that need or requests it, rather than broadcasting the same
message out of its ports.
4. 4. Bridge:
Basic knowledge,Feature and Services:
>> Operates in both the PHYSICAL and the data link layer.
>As a PHYSICAL layer device, it regenerates the signal it receives.
>As a data link layer device, the bridge can check the PHYSICAL/MAC
addresses (source and destination) contained in the frame.
>> Types of Bridges :
Transparent Bridge – Also called learning bridges. Build a table of MAC
addresses as frames arrive. Ethernet networks use transparent bridge.
Source Routing Bridge – Used in Token Ring networks. Each station should
determine the route to the destination when it wants to send a frame and
therefore include the route information in the header of frame. A Frame
contains not only the source and destination address but also the bridge
addresses.
>> A bridge has a table used in filtering decisions. It can check the destination
address of a frame and decide if the frame should be forwarded or dropped. If the
frame is to be forwarded, the decision must specify the port.
>> A bridge has a table that maps address to ports.
>> Limit or filter traffic keeping local traffic local yet allow connectivity to other
parts (segments).
5. 5. Router:
Basic knowledge,Feature and Services:
>> Routes packets based on their logical addresses.(host-to-host addressing)
>> A router normally connects LANs and WANs in the Internet and has a routing
table that is used for making decision about the route.
>> Types of Routers:
There are several types of routers in the market. eg. Broadband Routers,Wireless
Routers, Brouters, Edge Router, Subscriber Edge Router, Inter-provider Border
Router, Core Router, Wired and Wireless Routers etc.
>> The routing tables are normally dynamic and are updated using routing protocols.
>> Provide sophisticated routing, flow control, and traffic isolation.
>> Configurable, which allows network manager to make policy based on routing
decisions.
6. 6. Gate Way :
Basic knowledge,Feature and Services:
>> Connect two networks above the network layer of OSI model.
>> Are capable of converting data frames and network protocols into the format
needed by another network.
>> Types of Gateways :
Transport Gateway- Make a connection between two networks at the
transport layer.
Application Gateway- Connect two parts of an application in the application
layer. eg. Sending email between two machines using different mail formats.
Broadband-modem-router Gateway- It combines the functions of a DSL or
cable modem, a hub or switch, and a firewall. Broadband routers attempt to
combine all of the essential features of home networking in one integrated,
easy-to-use package. Differentiators for home "residential gateways" include
specific features, reliability, cost, speed, and vendor reputation.
>> Provide for translation services between different computer protocols.
7. Ans to the ques no: 04
Firewall: An entity that prevents a specific type of information from moving between
outside world (untrusted network) and inside world (trusted network).
Perform and process of Firewall:
Firewall can limit network exposure. It can prevent the dangers of the Internet from
spreading into a LAN (e.g. DdoS). It can keep one (more vulnerable) segment of a
LAN from another. A firewall can log Internet activity. Since all traffic passes
through the firewall, the firewall is a good place to collect information about system
and network use or misuse. Based on this view I will block the access of
FACEBOOK (https://www.facebook.com) under network in Bangladesh.
I will apply this Firewall at Gateway hardware which I described above.