Whether you want to understand how iTunes works, or you want to network a series of laptops and other devices at your office for maximum efficiency, you'll find all the answers in this authoritative guide. Learn algorithms for solving classic computer science problems with this concise guide covering everything from fundamental …. Today, software engineers need to know not only how to program effectively but also how to …. Bovet, Marco Cesati. In order to thoroughly understand what makes Linux tick and why it works so well on ….
Skip to main content. Even though ad hoc networks have emerged to be attractive and they hold great promises for our future, there are several challenges that need to be addressed. Some of the well-known challenges are attributed to issues relating to scalability, quality-of-service, energy efficiency and security.
It contains 98 answers, much more than you can imagine; comprehensive answers and extensive details and references, with insights that have never before been offered in print. A quick look inside of some of the subjects covered: Push email - Comparison with polling email, Internet protocol suite Application layer, Virtual Loadable Module - NetWare 5.
The 48 revised full papers and 30 revised short papers cover management of distributed networks, network configuration and planning, network security management, sensor and ad-hoc networks, network monitoring, routing and traffic engineering, management of wireless networks and security on wireless networks.
Drawing from the real-life exploits of five highly regarded IoT security researchers, Practical IoT Hacking teaches you how to test IoT systems, devices, and protocols to mitigate risk.
The book begins by walking you through common threats and a threat modeling framework. The revised full papers presented were carefully selected during two rounds of reviewing and revision. The papers are organized in topical sections on high-speed network technologies, enhanced Internet protocols, QoS in the Internet, mobile Internet, network security, network management, and network performance. That won't be shut down, instead get powered off at the utmost.
And above all this book is about how to build such a thing. With more than 2, terms and explanations it acquaints and reunites you with the major standards and concepts of the Web, with HTML, CSS, JavaScript, accessibility, security, performance, code quality, internationalization, localization, editors and tooling and more.
The glossary then goes beyond web development, touching on computer science, design, typography, usability and user experience, information as well as project management, other disciplines of interest and relevance to the modern developer.
It goes beyond, inspiring the curiosity to learn more about the Web and the people creating and using it. And still it is a glossary, of a couple of thousand terms for developers, leaning on and giving back to Wikipedia and the MDN Web Docs. It covers exam topics such as media and topologies, protocols and standards, network implementation, and network support, as well as new exam topics on technologies such as wireless networking and Ethernet.
The book can be used for a one- or two-semester course on Linux or Unix. It is complete with review sections, problems, definitions, concepts, and relevant introductory material, such as binary and Boolean logic, OS kernels, and the role of the CPU and memory hierarchy.
Details for Introductory and Advanced Users The book covers Linux from both the user and system administrator positions. From a user perspective, it emphasizes command line interaction. From a system administrator perspective, the text reinforces shell scripting with examples of administration scripts that support the automation of administrator tasks. The implication is that it is most useful to name entities with which you can communicate.
DNS-SD maintains the same philosophy, naming logical services as the primary entity on the network. Suppose you are interested in locating web sites hosted on your local network. Suppose you could find the IP addresses of all nearby machines. Then what? You could try to contact them with your web browser using the well-known port But it is certainly possible for a single device to host more than one web site, listening on different ports.
Merely having access to the file was not enough—to properly interpret it, the software had to also understand the language used to encode all of its formatting and other information.
Similarly, merely being able to create a TCP connection to a device is not sufficient to use it. The client and the service need to speak the same language i. The historical solution to this problem is that your web browser assumes that the desired web server must be listening on TCP port While that may superficially seem to work, it has problems.
Thousands are already reserved for applications you will probably never run on your computer. Any service can use any available port on your computer and advertise its port to prospective clients along with its IP address.
AppleTalk NBP has a mechanism for browsing the network for services, but, as its name emphasizes, it is primarily a Name Binding Protocol. Its primary function is binding human-meaningful names to computer-meaningful network addresses. A human user will use the browsing capabilities to locate a service initially, such as selecting a default printer, but every time the name service is used subsequently, the Name Binding Protocol is used to find out the current network address and port number for that service.
This means that even if the printer address changes, clients will still be able to connect to it at the new address without disruption.
This late binding of a name to an address is an important feature of a technology intended to replace AppleTalk. If a service is available on a network that uses DHCP or link-local addressing, there is no guarantee that the device hosting the service will have a consistent IP address.
Late binding ensures that the client attempts to connect to the current IP address and port number. Service requests consist of asking for a service of a particular type in a particular domain. These replacements for zones provide an independent namespace so that there is no confusion in printers with the same name that are located in different zones. Application-layer protocols come and go. A service discovery protocol is a more foundational technology and cannot be built on a faddish technology.
Zeroconf is agnostic to application protocol design; it can advertise any kind of application protocol, from ancient ones such as Telnet and FTP to future application protocols not yet imagined. The Name portion should be a user-friendly name. With this approach, the names are both long and descriptive.
The end user will be employing a browser of some sort to select named services from a list. As they will not have to type the service name every time they want to use a service, the names should not be cryptic for the sake of making them shorter. Notice that the service name can contain spaces as well as dots, percent signs, and other symbols. Without a central network administrator, there is a possibility that two devices may want to use the same name. Because Zeroconf requires that the devices be self-configuring, the devices have to be able to sort out the conflict themselves.
For example, you may buy two printers and connect them into the same network. On devices such as laptop computers, which are designed for human interaction, a dialog is typically shown to inform the user if a name conflict occurs and to give him the opportunity to select a new name, if desired. In The Stuff of Bits, Paul Dourish examines the specific materialities that certain digital objects exhibit.
These case studies demonstrate how a materialist account can offer an entry point to broader concerns—questions of power, policy, and polity in the realm of the digital. The technology needed to build the infrastructure already exists. However, more than a d. This trend has enabled the coupling of physical objects and digital information into cyber-physical systems and it is widely expected to revolutionize the way resource computational consumption and provision will occur.
Specifically, one of the core ingredients of this vision, the so-called Internet of Things IoT , demands the provision of networked services to support interaction between conventional IT systems with both physical and artificial objects.
In this way, IoT is seen as a combination of several emerging technologies, which enables the transformation of everyday objects into smart objects. It is also perceived as a paradigm that connects real world with digital world.
The focus of this book is exactly on the novel collective and computational intelligence technologies that will be required to achieve this goal.
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