interfaces Discussions
| Autoconfiguration | | IEEE INTERNET COMPUTING 1089-7801/01/$10.00©2001 IEEE http://computer.org/internet/ MAY • JUNE 2001 81
On the Wire
Autoconfiguration
for IP Networking:
Enabling Local Communication
It would be ideal if a host implementation of the
Internet protocol suite could be entirely self-configuring.
This would allow the whole suite to be
implemented in ROM or cast into silicon, it would
simplify diskless workstations, and it would be an
immense boon to harried LAN administrators as
well as system vendors. We have not reached this
ideal; in fact, we are not even close. —RFC 11221
IP hosts and network infrastructure have historically
been difficult to configure—requiring network
services and relying on highly trained network
administrators—but emerging networking
protocols promise to enable hosts to establish IP networks
without prior configuration or network services.
Even very simple devices with few computing
resources will be able to communicate via standardstrack
protocols wherever they are attached. Current
IETF standardization efforts, such as those in the
Zeroconf working group, aim to make this form of
networking simple and inexpensive.
Hosts that are... | |
| | Optical Transport Network Tutorial | | Optical Transport Network TutorialThe amount of data traffic relative to voice traffic on optical networks and the total traffic volume
keeps increasing.1 These factors are the drivers behind emerging, flexible technologies to
supplement the mature, voice optimized, SONET/SDH transport infrastructure and help manage
network complexity. At the edge of the network, where data and voice combine in a common
infrastructure, new data-centric applications have emerged. An example is the combination of
virtual concatenation (VCAT), which provides flexible bandwidth groupings for SONET/SDH, Link
Capacity Adjustment Scheme (LCAS), which provides dynamic bandwidth settings, and Generic
Framing Procedures (GFP), which provides a protocol agnostic frame container2, 3, 4. In the
transport core, bandwidth requirements spawned the creation of the Optical Transport Network
(OTN) described in general terms in ITU-T G.8725. ITU-T G.709 provides the network interface
definitions.6
G.709 improves transport network performance and facilitates the evolution to higher backbone
bandwidths. The G.709 OTN frame includes transport overhead that provides operation,
administration, and... | |
| | do you know about Linux? | | Linux
Linux (often pronounced LIH-nuhks with a short "i") is a Unix-like operating system that was designed to provide personal computer users a free or very low-cost operating system comparable to traditional and usually more expensive Unix systems. Linux has a reputation as a very efficient and fast-performing system. Linux's kernel (the central part of the operating system) was developed by Linus Torvalds at the University of Helsinki in Finland. To complete the operating system, Torvalds and other team members made use of system components developed by members of the Free Software Foundation for the GNU Project.
Linux is a remarkably complete operating system, including a graphical user interface, an X Window System, TCP/IP, the Emacs editor, and other components usually found in a comprehensive Unix system. Although copyrights are held by various creators of Linux's components, Linux is distributed using the Free Software Foundation's copyleft stipulations that mean any modified version that is redistributed must in turn be freely available.
Unlike Windows and other proprietary systems, Linux is publicly open and extendible by contributors. Because it conforms to the... | |
| | What do you mean of An intranet???? | |
is a private computer network that uses Internet protocols, network connectivity, and possibly the public telecommunication system to securely share part of an organization's information or operations with its employees. Sometimes the term refers only to the most visible service, the internal website. The same concepts and technologies of the Internet such as clients and servers running on the Internet protocol suite are used to build an intranet. HTTP and other Internet protocols are commonly used as well, especially FTP and e-mail. There is often an attempt to use Internet technologies to provide new interfaces with corporate 'legacy' data and information systems.
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| | Windows Vista Features: Performance Features | |
One of the big concerns with Windows Vista is that its high-powered Aero user interface will drag down overall system performance, causing Vista performance to trail that of XP on the same hardware. Also, Vista seems "heavier" from a functional standpoint: Surely all of that additional goodness will have an adverse effect on Vista's performance.I'll leave it to better minds than my own to provide detailed benchmarks for Windows Vista. I've read that games, however, will typically run 10 to 15 percent slower on Vista than they do on Windows XP, and while that difference will likely be noticeable to hard core gamers, it's unlikely to affect normal users. And over time, of course, faster PCs--and Vista-specific hardware like DirectX 10-compliant video cards--should narrow, erase, and then eventually reverse that gap.My own unscientific observation is that Windows Vista performs roughly as well on the same hardware as does Windows XP, with a few caveats. First, you shouldn't expect a PC with 512 MB of RAM to run Windows Vista effectively, unless of course your normal workload involves running a single application at a time. Second, you're going to get the best performance,... | |
| | SCBCD 5.0 Beta | | Hie guys..This discussion is to rarget all who are planning to crack SCBCD 5.0 certification...I hope people will start very soon attempting their exams.. and there feedback will be definetly important for all of us....Here I am trying to summarize the objectives and partcular materials or topics we need to prepare and we are not able to find easily in specs... Start updating.. giving reference to the objective and material pointing to it....Objectives from Sun are:
Section 1: EJB 3.0 Overview 1. Identify the uses, benefits, and characteristics of Enterprise JavaBeans technology, for version 3.0 of the EJB specification. 2. Identify the APIs that all EJB 3.0 containers must make available to developers. 3. Identify correct and incorrect statements or examples about EJB programming restrictions. 4. Match the seven EJB roles with the corresponding description of the role's responsibilities. 5. Describe the packaging and deployment requirements for enterprise beans. 6. Describe the purposes and uses of annotations and deployment descriptors, including how the two mechanisms interact, how overriding is handled, and how these mechanisms... | |
| | Linux | | Linux (often pronounced LIH-nuhks with a short "i") is a Unix- like operating system that was designed to provide personal computer users a free or very low-cost operating system comparable to traditional and usually more expensive Unix systems. Linux has a reputation as a very efficient and fast-performing system. Linux's kernel (the central part of the operating system) was developed by Linus Torvalds at the University of Helsinki in Finland. To complete the operating system, Torvalds and other team members made use of system components developed by members of the Free Software Foundation for the GNU Project.
Linux is a remarkably complete operating system, including a graphical user interface, an X Window System, TCP/IP, the Emacs editor, and other components usually found in a comprehensive Unix system. Although copyrights are held by various creators of Linux's components, Linux is distributed using the Free Software Foundation's copyleft stipulations that mean any modified version that is redistributed must in turn be freely available. Unlike Windows and other proprietary systems, Linux is publicly open and extendible by contributors. Because it conforms to the... | |
| | WHAT ORKUT OWNER LOVES???????????? | |
HE WRITES THIS ON HIS BLOG ......Sports:I like rock-climbing, fencing, tennis, scuba diving, sailing, volleyball and golf. Dancing:Dancing is one of my favorites. I have taken dance classes in Bilkent and Stanford. I like Polka, Rumba, Salsa, Swing, Waltz, Viennese Waltz and Tango. Music:I play the keyboard and listen to everything that fits my musical acceptance. Classified under classical music I listen to Bach, Tchaikovsky, Beethoven; classified under pop music I appreciate Phil Collins, Elton John, Beatles, Cranberries, Simply Red, Sister Hazel, Fleetwood Mac, Police, Roxette, Billy Joel; also Kenny G and Yanni. Animals:I like especially wolves, dogs and horses. Games:I like playing Bowling, Chess, Scrabble, Pictionary and Othello. Although I do not play computer games very often, I like playing strategy games such as Warcraft, Command & Conquer and adventure games like Within the Beast, Pandora's Directive. Technical Interests:My technical interests contain a wide subset of computer engineering, mainly on software programming. I like to develop application programs with C++, Java and Visual Basic. I am greatly interested in... | |
| | Do mantle plumes exist? | | This is a nice current issue in the Earth sciences so I thought I'd bring it up. From what I've read there are some serious doubts as to the validity of the mantle plume hypothesis. It was initially proposed to explain "hot spots" like Hawaii, where there is volcanism that is not (at first glance) explained by plate tectonics.Some seismologists have claimed they have imaged the plumes, but others have discarded their claims; the data is noisy and depends upon certain estimated values for some variables. As far as I am aware the most current data from the geochemists is now begining to mount up against the plume theory.Having said that, the plume theory is quite simple and to me at least seems intuitively elegant enough that it could just be right, especially when viewed in conjunction with the experimental evidence of fluid mechanics showing that thermal and compositional convection can lead to plume structures developed at interfaces. | |
| | What do you know about GUI(Graphical User Interface) | | Graphical user interfacesToday, most modern operating systems contain Graphical User Interfaces (GUIs, pronounced goo-eez). A few older operating systems tightly integrated the GUI to the kernel—for example, the original implementations of Windows and Mac OS. More modern operating systems are modular, separating the graphics subsystem from the kernel (as is now done in Linux, and Mac OS X, and to a limited extent Windows).Many operating systems allow the user to install or create any user interface they desire. The X Window System in conjunction with GNOME or KDE is a commonly found setup on most Unix and Unix derivative (BSD, Linux, Minix) systems. However, some operating systems do not give such a flexible GUI, such as Windows—these operating systems require the use of software to modify the existing GUI, and more often than not, they are only able to change simple attributes such as menu style, colours, etc.GUIs tend to change with time. For example, Windows has modified its GUI every time a new major version of Windows is released and the Mac OS GUI changed dramatically with the introduction of Mac OS X.What do you know about GUI? | |
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