Wap

Infrared transmission uses infrared light-emitting diodes to transmit data over short ranges using line-of-sight propagation. It has advantages of simple circuits, low cost, low power consumption and no licensing but has disadvantages of short range and blockage by common materials. Radio transmission modulates electromagnetic waves below visible light for uses like audio, video, navigation and data over larger areas but requires licensing and has difficulties with interference and shielding.

A presentation which on Wireless Network Security. It contains Introduction to wireless networking, security threats and risks, best practices on using wireless networks.

This document provides an overview of the Wireless Application Protocol (WAP) and WAP 2.0 standard. It discusses what WAP is, its development and objectives, and the architectures of WAP 1.0 and WAP 2.0. Key features of WAP 2.0 are summarized, including WAP Push, user profiles, wireless telephony applications, and support for high-speed 3G technology. Examples of real-life WAP applications are given such as checking bank balances on the go and making reservations without calls.

This presentation introduces the Wireless Application Protocol (WAP). WAP was created by mobile companies to provide an open standard for wireless information and services. It uses WML as its markup language. The presentation describes WAP's architecture including its protocol stack and WAP gateway. It also discusses how WAP addresses limitations of wireless devices and networks, such as small displays and low bandwidth. Examples of WAP services mentioned include banking, shopping, news and email. In conclusion, the presenter notes that WAP will become more efficient with the rollout of 3G networks like UMTS.

Wireless networks have become commonplace in homes and offices, enabling increased productivity and mobile connectivity. They function by connecting clients to a central access point or in an ad-hoc peer-to-peer mode. Early security standards like WEP had vulnerabilities due to short encryption keys and initialization vector reuse. WPA and its successor WPA2 were developed to address these issues through stronger encryption, authentication, and dynamic key generation. However, wireless networks remain vulnerable to insertion attacks by unauthorized clients or rogue access points, as well as traffic interception if encryption is not used.

This document discusses security issues with wireless networks and protocols. It describes common wireless standards like 802.11b, g, and a. It then covers security protocols that aimed to improve on WEP like WPA and WPA2, discussing their encryption methods. The document also outlines various threats to wireless security like eavesdropping, unauthorized access, and denial of service attacks. It concludes by listing some common wireless hacking tools.

The document discusses the Domain Name System (DNS) which maps domain names to IP addresses. It describes how DNS works hierarchically with a root server at the top level, below which are generic, country-specific and other domain levels. DNS servers store and distribute this mapping information across multiple computers to avoid a single point of failure. Primary DNS servers store and update zone files mapping domain names to IP addresses, while secondary servers transfer this information from primary servers.

WAP (Wireless Application Protocol) is a protocol that allows users to access information and services on the internet using handheld wireless devices like mobile phones. It uses a layered architecture and protocols like WSP, WTP, and WTLS to enable wireless internet access via technologies like GSM, CDMA, and UMTS networks. WAP was designed to work with microbrowsers and uses the markup language WML instead of HTML to optimize content for small screens and low bandwidth connections.

Security in Clouds: Cloud security challenges – Software as a Service Security, Common Standards: The Open Cloud Consortium – The Distributed management Task Force – Standards for application Developers – Standards for Messaging – Standards for Security, End user access to cloud computing, Mobile Internet devices and the cloud. Hadoop – MapReduce – Virtual Box — Google App Engine – Programming Environment for Google App Engine.

The document defines HTTP and HTTPS. HTTP is the Hypertext Transfer Protocol that provides communication between web browsers and servers. It is unsecured and transmits data in plain text. HTTPS is HTTP secured with SSL/TLS encryption to provide security. Key differences are that HTTPS uses port 443 instead of HTTP's port 80, establishes an encrypted channel, and verifies servers with certificates to protect against attacks.

TCP/IP is a set of communication protocols that allows devices to connect on the internet. It has two main protocols - TCP and IP. TCP ensures reliable delivery of segments through acknowledgements and retransmissions. IP handles addressing and routing of packets between networks. Common applications that use TCP/IP include HTTP, FTP, SMTP and more. It is popular due to its early development and support in operating systems like UNIX.

wireless communication and networking by WilliamStallings Hai I'm Senthilkanth, doing MCA in Mepco Schlenk Engineering College.. The following presentation covers topic called Wireless Communication and Networking by WilliamStallings for BSc CS, BCA, MSc CS, MCA, ME students.Make use of it. This presentation agenda like,, Introduction Chapter 1: Wireless Comes of Age Chapter 2: Transmission Fundamentals Chapter 3: Communication Networks Chapter 4: Protocols and the TCP/IP Protocol Suite Chapter 5: Antennas and Propagation Chapter 6: Signal Encoding Techniques Chapter 7: Spread Spectrum Chapter 8: Coding and Error Control Chapter 9: Satellite Communications Chapter 10: Cellular Wireless Networks Chapter 11: Cordless Systems and Wireless Local Loop Chapter 12: Mobile IP and Wireless Access Protocol Chapter 13: Wireless LAN Technology Chapter 14: IEEE 802.11 Wireless LAN Standard Chapter 15: Bluetooth

content has been taken from the schiller's book and some of my peers ppts... i would like to thank them all.

This presentation is a basic insight into the Application Layer Protocols i.e. Http & Https. I was asked to do this as a part of an interview round in one of the networking company. -Kudos Harshad Taware Bangalore ,India

Circuit switching establishes a dedicated electrical path between source and destination before data transmission, but it wastes bandwidth if no data is being sent and has high initial delays. Store-and-forward switching breaks messages into packets that are transmitted independently between nodes, allowing more efficient use of bandwidth. Packet switching is commonly used as it offers better delay characteristics than message switching and requires less buffer storage than transmitting full messages.

This document discusses different types of wireless networks including wireless personal area networks (PANs), local area networks (LANs), and wide area networks (WANs). It describes key features of wireless networks such as allowing multiple computers to access shared hardware and easier data sharing. Challenges of wireless networks including interference and fading are also outlined.

Vehicular ad-hoc networks (VANETs) allow vehicles to communicate with each other using sensors, GPS, WiFi and other technologies. In a VANET, vehicles act as wireless routers to connect to other vehicles within 100-300 meters, creating a mobile internet. VANETs provide safety benefits by sharing information about location, speed and road conditions to warn of accidents and traffic. They can also notify drivers of nearby services. Inter-vehicle communication does not require infrastructure and allows real-time sharing of safety messages between any vehicles that are nearby.

WAP Model- Mobile Location based services -WAP Gateway –WAP protocols – WAP user agent profile- caching model-wireless bearers for WAP - WML – W MLScripts - WTA - iMode- SyncML.

The document discusses various topics related to network security including encryption, authentication, and protocols. It provides an overview of symmetric and public key cryptography, algorithms like DES and RSA, digital signatures, protocols like SSL and IPsec, and applications like PGP. Common security threats like packet sniffing, IP spoofing, and denial of service attacks are also summarized.

MQSeries is a middleware product that implements a messaging and queuing framework to allow programs to communicate asynchronously by sending messages to queues. It provides assured delivery of messages across platforms and languages. The core components of MQSeries include queue managers, queues, message channels, and a messaging programming interface. MQSeries uses message logging and recovery to ensure reliable and persistent message delivery.

This document discusses the properties of minerals. It begins by defining a mineral as a naturally occurring solid substance that has a specific chemical composition and formula. It then outlines that minerals have physical, optical, and chemical properties. The document focuses on various physical properties of minerals such as hardness, luster, specific gravity, color, fracture, tenacity, streak, and cleavage. It provides details on how hardness and color are determined for minerals and explanations of streak and luster. The document also briefly mentions cleavage, fracture, specific gravity, and tenacity. It concludes by noting that minerals can be examined using light to study optical properties like refraction, dispersion, and birefringence.