™ With everything becoming available wireless these days a great innovation is the wireless media router. What is a wireless media router? Its a router that allows the transmission of 우리카지노 signals from the router to anywhere in the house that has a receiver. Wireless routers are becoming more and more popular. They have many uses, one of which is viewing pictures and movies from your computer on your television. This comes in very handy when you have media files that you cant burn on CD or cannot be played on your DVD player. A second use would be to transmit paid television. For example if you paid for HBO usually you would be able to only view it on one nominated television. With the wireless media router you can send the signal you television is receiving, HBO, to any other television in the house. You can even change the channel from the remote television while viewing. The third use would be watching television at a location where an antenna is not available. This means no more long cables leading from room to room just to be able to watch television. Depending on the amount of receivers you have you can receive the signal from multiple televisions. How does it work? The receivers are connected to the remote televisions. The router takes the signal from the source television and distributes it to the remote televisions by way of the receiver. On the remote television a certain channel is dedicated to this receiver meaning you can watch independent television, and easily switch the channel to the signal being received from the wireless router. This also makes running your entertainment room a breeze. The receiver can also be hooked up-to a projector making it easy to view anything you wish. This means you will not need to purchase separate DVD players VCRs for every room.
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™ Valuing Network Certifications – Is The Time, Money And Effort Worth The Bother? There are many ways to get any of the large number of network certifications now available. There’s not only software certification like those offered from Oracle, Java, Microsoft, etc. but there’s also direct network hardware certifications from strong companies like Cisco and then there’s the server administration, hardware repair, security and several sub category type certifications. All are available but the question is if these have any real value in the marketplace. The answer, unfortunately is not simple. This is because while many companies demand a certain certification, they will also bend the requirement and allow you to get certified once you have the job. There’s also people in the marketplace who are strong proponents of certification or another. The reason for this is usually because they have that certification and by requiring it, they somehow believe it validates their decision to obtain the training and pass the tests. The reality is that like a good resume and education pedigree, certifications help get you in the door. Think about it for a moment. If you were hiring a network administrator, you would probably ask for the usually experience and basic education and some type of networking certification. If 100 people claiming the same skills and experiences levels all apply and all have at least the single required certification while 10 have not only the network cert but also maybe several MS and a security certificate, which candidates applying would probably get scheduled for interviews? Right! It would be the ones with the better paper qualifications. So the value of a certification can be measured by it’s recognition as important by employers, and the relative value they place on such training. If you’re applying in network shops that value certifications, then they will naturally place a premium on the fact that your have that training and will probably reflect that in an increased earnings range. The real key however is to recognize that employers are NOT employing you because you have a certification. You must have the skills necessary to do the job and meet the requirements of the position. No amount of certifications can make up for a strong work ethic and solid experience. With today’s study materials, almost anyone can learn enough to pass the required tests and become certified. This however does not make anyone competent to work on a network anymore than walking into a garage makes one a mechanic. It’s skills, talent and knowledge that are truly desired. Microsoft Certifications are one of the most widely pursued and acclaimed professional certifications in the IT industry. Preparing MS certification tests, however, is a significant undertaking whether you’re just out of college or have been in IT field for years. IT professionals are continuously demanded to acquire new knowledge in order to perform well on their jobs as new technology in the IT industry emerged at a pace that has never been seen before. Regardless what certifications (Microsoft Certified Professional or MCP, Microsoft Certified System Administrator or MCSA, Microsoft Certified System Engineer or MCSE ) you are pursuing, a thorough planning will increase the chance of success. The importance of hands-on Experience, no matter if it’s your own little network at home or at your job, experience matters! Being 코인카지노 able to apply the knowledge gained by the study necessary to obtain your certification is just as important as the exam itself. When preparing for any certification test, have a network available to physically learn the principles being taught. You network might only be a couple of old PC’s and a switch but it’s enough to understand the principles and basic information. You gain valuable skills that cannot be obtained any other way except through hands on work. Finally, consider using CBT’s or computer based training as part of your test preparation. These tools are a great way to take your level of understanding to a new level. This is also true of practice exams. If you develop the skills necessary to support the certifications, all your training, costs and effort will pay off handsomely. With your knowledge and training, you can expect to be have an easier time getting considered for positions, moving up in a company, and enjoying a solid work career. ™ 1. Network interface(Data link) layer 2. Network layer 3. Transport layer 4. Application layer Network interface layer The lowest layer of the TCP/IP model. Its task is to provide access to the transmission physical medium and it differs according to the implementation of the medium. Network layer The network layer provides network addressing, routing and datagram transmission. Used protocols that will be of interest further regarding DHCP are IP and ARP. IP protocol It is the basic protocol of the network layer and in general the internet as a whole. It sends datagrams, which are independent units that contain information about the destination, source and the sequence number of the datagram. The sequence number is used for message reconstruction, since the delivery order of the datagrams might not be the same as their order in the message and delivery reliability isn’t guaranteed at all. IP protocol versions: “IP v4 – 32 bit addresses. Provides approximately 4 billion unique addresses which aren’t sufficient at present times. “IP v6 – 128 bit addresses. The transition to v6 will bring (is bringing) higher security, QoS, packet segmentation and many more IP addresses. (the transition from IP v4 to IP v6 must be supported by the system provider) ARP protocol The ARP abbreviation stands for Address Resolution Protocol. This protocol is used to find the physical address (MAC) based on a known IP address. If required ARP sends information concerning the wanted address to all the stations in the network – Broadcast. The stations consequently answer with a message containing their MAC. If the wanted device/station is outside the node/segment, the appropriate router will answer instead of it. Transport layer The transport layer is implemented only in terminal devices and it adjusts the behavior of the network according to the requirements of the device/application. Application layer The application layer is composed of programs that use net services to fulfill the needs of users. Examples of specific protocols are for instance FTP, DNS and DHCP. Application protocols use TCP, UDP or both services at the same time. So called ports are 우리카지노 used to differentiate between application protocols, they represent a type of label of the application. It is possible to change the ports in the settings of the service, but each service has a default port that isn’t changed for most services and is used as an unwritten standard. ” FTP = 21 ” DNS = 53 ” DHCP = 67 68 ™ There has been a lot of talk recently about Google Talk and how there are serious privacy concerns with the new application. The biggest concern seems to come with the ability to search and share multiple computers with one account. In other 우리카지노 words, you could use a single desktop search account to search, index and allow you to share files between your desktop and laptop for example. But are these concerns grounded in truth? Is there really a privacy issue here? I downloaded and installed the new Desktop Search beta the other day. It has some interesting new features such as the ability to remove panels from the sidebar and dock them anywhere you like on your desktop. And there are several more panels available to let you do anything from manage what is indexed, to passing time by playing games. One of the coolest features is its ability to reach beyond the desktop it is on to do a variety of things. Now, I can play tic tac toe with co-workers, or even friends around the world. But the biggest, and most troubling update to some is the ability to remotely index files, as well as share them using Google servers to temporarily store the items. By turning this feature on you give Google the right to store your files for up to 30 days. Therein lies the crux of the issue there seems to be no way around this 30 day requirement. All I have to say is ‘so what?’ So what if you have to give Google this ability? Google will encrypt the data so that no one else can access it. And even if there is some sort of DOJ subpoena requiring access to these files I don’t think it would stand up in court. This is because Google has set up a network whereby all your Google activities are tied to one Google account. Your personalized home page, gmail, google analytics, adwords and adsense accounts all share the same Google account. Therefore, it would be difficult for anyone to get a subpoena to review information pertaining to only part of that account. Legalities aside, if you are that concerned about the privacy being surrendered to Google in order to use this system then don’t sign up for it. You can still download and use the new Desktop Search with most of its new features, but you don’t have to use the file sharing. But what if you want to share files between computers? Well, do what I did go to your favorite electronics store and buy a flash drive. I just bought a USB flash drive with over 2 gigs of storage for under $100. Now I can easily transfer anything between any computer with no worry of some government agency wanting to know what’s on it. As I said, I do have the new Google Desktop installed, and I did look at the settings for the search and file sharing, but I didn’t turn them on. I have no need to be able to search my home computer from work and vice versa, nor do I need to share files between the two computers. And if I did, I’ll simply use the FTP site I have set up on a computer at home or the aforementioned flash drive. Really, when it comes to all the other ways that Google captures your personal data, from search history to Gmail, should we be all that concerned that some files may end up being stored on a Google server somewhere? I think we should have other concerns. For example, I think we should be concerned about what Google already knows about us via those services I mentioned earlier. I think business owners should be concerned that such a service would allow employees to easily steal and transfer data to and from work. I think if you are that scared of the US government infringing on your privacy then you shouldn’t have a Google account, nor Google Desktop Search nor a Gmail account. In fact I don’t think you should have any Internet accounts because quite honestly everyone is a target for the DOJ. Further, I can almost guarantee you that your local ISP will fold and hand over the data much easier than Google will. So before you start complaining about how Google could infringe your privacy, remember that YOU have the ability to stop it from happening. It’s just a matter of choosing to do so. ™ An intranet is basically a private web based network. It uses all of the technology of the internet but is safe and protected behind a firewall that keeps unauthorized personnel out. Companies have been using them for years as a method of streamlining their internal communications. Because a web browser can run on any type of computer, the need to maintain multiple paper copies of documents that are constantly changing can be eliminated. Documents like training manuals, internal phone books, procedure manuals, benefits 메리트카지노 information, employee handbooks, requisition forms, etc. can be maintained as electronic documents and updated at almost no cost. The savings in paper and other material costs can be significant But the most powerful aspect of an intranet is its ability to display information in the same format to every computer being used. That allows all of the different software and databases a company uses to be available to all employees without any special equipment or software being installed on their systems. This universal availability of information is sparking an era of collaboration unlike anything ever seen before. The departmental barriers that exist in many companies are slowing breaking down because now colleagues can share information readily using the company intranet. Options for implementing an intranet There are a variety of options for setting up an intranet. They include building your own intranet technology, purchasing and installing third-party software, or purchasing access through an extranet ASP. Here is a quick summary of the advantages and disadvantages of each approach: 1. Building it yourself Advantages: Complete control of user interface design; ability to customize level of functionality; integration into internal systems, and direct access to user activity. Disadvantages: High up-front development cost; requires staff expertise in the development of extranets, commitment of internal staff for 6 months to a year for planning, execution, review and implementation; and an ongoing commitment of internal staff for internal and client support, hosting, maintenance and upgrades. 2. Purchasing/installing third-party software Advantages: Proven track-record of packaged solution; ability to choose functions and to customize user interface, more rapid implementation compared to building it yourself. Disadvantages: High up-front purchase cost; commitment of internal staff for customization and implementation; on-going commitment of internal staff for internal and client support, hosting, maintenance and upgrades; and extensive internal and client training 3. Using a Service Provider (ASP) Advantages: Proven track-record of the application; low cost of entry and predictable cost over time; virtually immediate implementation; no commitment of internal staff for internal support, hosting, or maintenance; and upgrades at no cost by extranet experts, and savings on internal server use. Disadvantages: Less freedom in user interface design, and fixed functionality. In the final analysis The approach you choose depends on how you work, the technical and financial resources at your disposal, and how rapidly you need to move forward. |
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