Wi-Fi is a wireless technology standard that allows electronic devices to connect to the internet or communicate with each other wirelessly. The presentation discusses Wi-Fi technologies like 802.11b, 802.11a, and 802.11g. It explains the basic components of a Wi-Fi network including access points, Wi-Fi cards, and security measures. It also covers Wi-Fi configurations, applications, security techniques and topologies like AP-based, peer-to-peer, and point-to-multipoint bridge.
Bluetooth network-security-seminar-reportROHIT SAGAR
basic network to protect blue-tooth from any un-authorised persons and devices ;its vital importance is to protect and send the data with or without any encrypted key
This slide is about WiFi & Bluetooth that we use everyday in our Smart devices. These devices are used for connect with other devices for sharing or plug & play purpose. Here is everything about wifi & bluetooth that you need to know or present to others for educational purpose.
Bluetooth network-security-seminar-reportROHIT SAGAR
basic network to protect blue-tooth from any un-authorised persons and devices ;its vital importance is to protect and send the data with or without any encrypted key
This slide is about WiFi & Bluetooth that we use everyday in our Smart devices. These devices are used for connect with other devices for sharing or plug & play purpose. Here is everything about wifi & bluetooth that you need to know or present to others for educational purpose.
It is a PPT on Wireless LAN Security,made by ARPIT BHATIA(student of Sri Guru Nanak Public School, Adarsh Nagar) for Informatics Practices project.It has all necessary information with pictures about the wireless LAN. This PPT is made only for Educational Purpose.
The Differences Between Bluetooth, ZigBee and WiFiMostafa Ali
Understanding Differences Between Bluetooth, ZigBee and WiFi.
It's not about what is the best it's just a description, the best you have to choose for your project what is suitable more?
Wifi cracking Step by Step Using CMD and Kali Linux 2018Mohammad Fareed
These slides include discussion on important Wi-Fi security issues and the solutions available to address them hack too. Enterprises which need to secure their networks from Wi-Fi threats in order to protect their information assets, prevent unauthorized use of their network, enforce no-Wi-Fi zones, and meet regulatory compliance for themselves and their clients will benefit from this discussion
Wi-Fi For Beginners - Module 1- What is WiFi?Nigel Bowden
Slides from the Wi-Fi For Beginners Podcast. These are the slides from module one of a series of podcasts looking at the basics of wireless LAN (WiFi) networking. You can find the podcast at WiFiForBeginners.com and on iTunes
It is a PPT on Wireless LAN Security,made by ARPIT BHATIA(student of Sri Guru Nanak Public School, Adarsh Nagar) for Informatics Practices project.It has all necessary information with pictures about the wireless LAN. This PPT is made only for Educational Purpose.
The Differences Between Bluetooth, ZigBee and WiFiMostafa Ali
Understanding Differences Between Bluetooth, ZigBee and WiFi.
It's not about what is the best it's just a description, the best you have to choose for your project what is suitable more?
Wifi cracking Step by Step Using CMD and Kali Linux 2018Mohammad Fareed
These slides include discussion on important Wi-Fi security issues and the solutions available to address them hack too. Enterprises which need to secure their networks from Wi-Fi threats in order to protect their information assets, prevent unauthorized use of their network, enforce no-Wi-Fi zones, and meet regulatory compliance for themselves and their clients will benefit from this discussion
Wi-Fi For Beginners - Module 1- What is WiFi?Nigel Bowden
Slides from the Wi-Fi For Beginners Podcast. These are the slides from module one of a series of podcasts looking at the basics of wireless LAN (WiFi) networking. You can find the podcast at WiFiForBeginners.com and on iTunes
Wi-Fi (Wireless Fidelity) is a generic term owned by "WiFi Alliance" which refers to any Wireless Local Area Networks (WLANs) based on IEEE 802.11 standard.
This presentation is prepared as reference of "E-Commerce Infrastructure" for BBA 6th Semester Students of Prime College. Document includes general introduction of WiFi Technology, WiFi Specification, advantages of WiFi and so on. Resources from various portals and slides from other authors has been used as reference.
Growth of WiFi in enterprises has been driven by an increased use of mobile devices and BYOD trends, as well as a surge in technological advancements such as the Internet of Things which demand more flexible connectivity than wired alone can offer. This, combined with consumer pressure for public WiFi hotspots, means that wireless LAN connectivity has become a standard expectation on across the board.
This is a ppt about the recent trends in tech and wireless communication. As the is good document to read we are requesting to study the wireless communal harmony and peace to you. Aster that I have a great day and I will be available from June to September to December to February to the same here to visit our frequently asked questions about HTML5.
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Research Inventy : International Journal of Engineering and Scienceinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Seminar Paper on Security Issues of 802.11b based on IEEE Whitepaper by Boland, H. and Mousavi, H., Carleton University, Ottawa, Ont., Canada, IEEE Canadian Conference on Electrical and Computer Engineering, 2-5 May 2004
Wireless networks are accessible to anyone within the router’s transmission radius. This makes them vulnerable to attacks. Hotspots are available in public places such as airports, restaurants, parks, etc.
In this module, we will introduce you to common techniques used to exploit weaknesses in wireless network security implementations. We will also look at some of the countermeasures you can put in place to protect against such attacks.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
4. Introduction
# Wireless Technology is an
alternative to Wired
Technology, which is commonly
used, for connecting devices in
wireless mode.
# Wi-Fi (Wireless Fidelity) is a generic
term that refers to the IEEE 802.11
communications standard for
Wireless Local Area Networks 4
5. The Wi-Fi Technology
Wi-Fi Networks use Radio
Technologies to transmit &
receive data at high speed:
# IEEE 802.11b(1999)
# IEEE 802.11a(2001)
# IEEE 802.11g(2003) 5
6. 802.11 Physical Layer
# There are three sub layers in
physical layer: 1. Direct
Sequence Spread Spectrum
(DSSS)
2.Frequency Hoping Spread
Spectrum (FHSS)
3.Diffused Infrared (DFIR) - Wide
angle 6
7. DSSS
# Direct sequence signaling technique
divides the 2.4 GHz band into 11 22-
MHz channels. Adjacent channels
overlap one another partially, with
three of the 11 being completely non-
overlapping. Data is sent across one
of these 22 MHz channels without
hopping to other channels.
7
8. IEEE 802.11 Data Link
Layer
The data link layer consists of two
sub-layers :
* Logical Link Control (LLC)
* Media Access Control
(MAC).
802.11 uses the same 802.2 LLC
and 48-bit addressing as other 802
LANs, allowing for very simple
8
bridging from wireless to IEEE
9. 802.11 Media Access Control
# Carrier Sense Medium Access with collision avoidance
protocol (CSMA/CA)
** Listen before talking
** Avoid collision by explicit Acknowledgement (ACK)
** Problem: additional overhead of ACK packets, so slow
performance
# Request to Send/Clear to Send (RTS/CTS)
protocol
• Solution for “hidden node” problem
• Problem: Adds additional overhead by
temporarily reserving the medium, so used for
large size packets only retransmission would be
expensive
# Power Management
9
10. Elements of a WI-FI Network
# Access Point (AP) - The AP is a
wireless LAN transceiver or “base station” that
can connect one or many wireless devices
simultaneously to the Internet.
# Wi-Fi cards - They accept the wireless
signal and relay information.They can be
internal and external.(e.g PCMCIA Card for
Laptop and PCI Card for Desktop PC)
10
# Safeguards - Firewalls and anti-virus
11. How a Wi-Fi Network Works
# Basic concept is same as Walkie talkies.
# A Wi-Fi hotspot is created by installing an
access point to an internet connection.
# An access point acts as a base station.
# When Wi-Fi enabled device encounters a
hotspot the device can then connect to that
network wirelessly.
# A single access point can support up to 30
users and can function within a range of 100 –
150 feet indoors and up to 300 feet outdoors.
# Many access points can be connected to each
11
13. AP-based topology
# The client communicate through Access
Point.
# BSA-RF coverage provided by an AP.
# ESA-It consists of 2 or more BSA.
# ESA cell includes 10-15% overlap to
allow roaming.
13
14. Peer-to-peer topology
# AP is not required.
# Client devices within a
cell can communicate
directly with each
other.
# It is useful for setting
up of a wireless
network quickly and
easily.
14
15. Point-to-multipoint bridge topology
This is used to connect a LAN in one building to
a LANs in other buildings even if the buildings
are miles apart . These conditions receive a
clear line of sight between buildings. The line-of-
sight range varies based on the type of wireless
bridge and antenna used as well as the
environmental conditions.
15
19. Service Set Identifier (SSID)
• SSID is used to identify an
802.11 network
• It can be pre-configured or
advertised in beacon
broadcast
• It is transmitted in clear text
• Provide very little security 19
20. Wired Equivalent Privacy
Or i g i n a l
(WEP) t y s o l u t i
s e c u r i o n
o f f e r e d b y t h e I EEE 802.11
s t a n d a r d
Us e s RC4 e n c r y p t i o n wi t h
p r e -s h a r e d k e y s a n d 24 b i t
i n i t i a l i z a t i o n v e c t o r s (I V )
k e y s c h e d u l e i s g e n e r a t e d
b y c o n c a t e n a t i n g t h e s h a r e d
s e c r e t k e y wi t h a r a n d o m
g e n e r a t e d 24-b i t I V
32 b i t I C V (I n t e g r i t y c h e c k
v a l u e )
No . o f b i t s i n k e y s c h e d u l e i s
e q u a l t o s u m o f l e n g t h o 20
f
t h e p l a i n t e x t a n d I CV
21. 802.1x Access
• Designed as aControl network access
general purpose
control mechanism
• Authenticate each client connected to AP (for
WLAN) or switch port (for Ethernet)
• Authentication is done with the RADIUS
server, which ”tells” the access point whether
access to controlled ports should be allowed
or not
• AP forces the user into an unauthorized state
• user send an EAP start message
• AP return an EAP message requesting the user’s
identity
• Identity send by user is then forwared to the
authentication server by AP 21
22. Wireless Protected Access
(WPA)
# WPA is a specification of standard based, interoperable
security enhancements that strongly increase the level of data
protection and access control for existing and future wireless
LAN system.
• User Authentication
• 802.1x
• EAP
# TKIP (Temporal Key Integrity Protocol) encryption
• RC4, dynamic encryption keys (session based)
• 48 bit IV
• per packet key mixing function
• Fixes all issues found from WEP
• Uses Message Integrity Code (MIC) Michael
• Ensures data integrity
• Old hardware should be upgradeable to WPA
# WPA comes in two flavors
WPA-PSK
22
•
23. Wi-Fi technology is the non-
cable connection between the
# Limitation:
access point or router and • Degradation in
the PC. The PC remotely
connects to the internet performance
without any wires or cables. • High power
In some cases, Wi-Fi tech.
requires you to have the WEP • consumption
or WPA key to access.
WEP/WPA is like the • Interference
password to secure your • Limited range
wireless router/ access
point.
# Advantages:
• Mobility, Ease of Installation
• Flexibility, Cost
• Reliability,Security 23