Posts Tagged ‘Computer Networking’

November 15 2009

Setting Up a Home Networking System

Since Microsoft released Windows for Workgroups, networking has a very simple and very common for most home computer users. All that is necessary to integrate a home network to the computer operating system that was installed in the machine. Everything you need to do it is in and configure. If you ever have Windows 95/98, the creation of a network is a breeze!
A home network is simply a combination of a number of hardware and a range of software, the computers can communicate with each other. A home network can share files or printers with the same or other inputs and outputs instead of buying one for each computer available.
One of the features of home networking in almost exactly the same way by a private company, when creating a LAN or local network. Nominations or IP addresses, and some that are slogans that people will remember as the host name, and they know who these people and where everything is. Let's say, 10 1. 1. 5 or computer Jack sends a file on the 10th 1. 1. 6 or computer Jill. The hardware and software must cooperate with each other to see where and how to send the file to Jill Jack.
This idea is the same as that of the post. It is connected to an address with each house are. A letter is being sent home to be forwarded using this address. Place the return address on the letter is very important so that no one knows where to meet. In addition, if the letter is lost, it will be returned to the sender. If no return address, it is simply a Dead Letter Office. Computer Networking Work at home in the same way.
Data routing is also called "hand" known. This surrounds the data or the words on the letter. A home network is available in two basic types: wired and wireless. In a cable bundle different son, known as the Ethernet cables with connectors at both ends in either a network interface card or NIC in the printer, fax, computer or a switch / router. Hubs or switches are devices that simplify the physical connections between the components of a network.
A wireless network operates in the same way. The main difference is that there is no need for cables. These small devices as a transceiver for sending and retrieving information via radio. Suppose you want two computers on a home network, both to be able to print the same printer. Where would you even begin to do something? You can do this in two ways. In one embodiment, the printer is physically connected to a computer. The other series printer to the network and not with a PC;
In the first determination, the printer is locally known, but shared. It can be connected to a remote computer to the device for printing locally. Computer-Jack will simply use the printer with the help of a software hosting, computer Jill. In most cases, typical today, the printer has its own network card. It is then up to a router or switch via Ethernet cable or a transmitter-receiver connected wirelessly. Then each computer on the network will be able to see "the machine as a device that can use the computer.
Scanners, fax machines and computers work in the same way. Each unit receives an address and name. Software on the device can be configured so that its function is available to several computers in the same network.

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September 14 2009

Data Processing Firms

The assorted processes that are a part of info processing are – Information entry, cleaning, coding, metamorphosis, interpretation, summary, assembly, validation, tabulation, probabilistic research, graphics, warehousing and information mining.

Information processing firms that do info entry charge a fair amount an hour, commit to high quality-data accuracy close to one hundred p.c., have round the clock service and guarantee security of the information.

Free quotes and free trials are available. As well as info entry, the other services offered are changing the data, transforming / formatting the info and so on. Scalable databases are made since info is sourced from various sources like papers, documents for example. The info security policies protect information that are delicate. Online sort of info entry uses optical personality recognition and manual strategies.

For info that is scattered and info that’s not organized, re-organization, tabulation and consolidation is done. Information conversion involves changing info of a specific format to other well-liked formats so that it becomes suited to modern business applications. Some common conversions are PDF Conversion, internet page conversions like XML, HTML etc. Database design and info migration provide a strong base of info. Some firms try word processing jobs of typing letters, memos and other kinds of documents. They’ll create shows that will be used during conventions, conferences and so on. There are no compatibility issues since all popular software apartments are used.

Some service suppliers use templates while others offer the flexibleness of selecting word processors. Info structures that are minimal cost and follow the standard structure are crucial for direct promoting. The promoting database should unify global buyer information, order information, marketing research and other such information. There are corporations which focus on this. For firms concerned in conducting surveys, help is required from data processing service suppliers who develop software for info entry and research into the surveys. Information research needs to be done for manufacturing the necessary reports. Information is also backed up and support is offered to the clients. Some firms offer online and offline info entry services.

Offline entry is using word processors like MS-Access, MS-Word etc for entering info. It implies the web isn’t required in this technique. Solutions like information entry, keying, scanning, 3D image processing and revising are available for photographs. All sorts of corporations from tutorial establishments, publication corporations and accounting firms benefit from info processing services. While selecting firms, select ones that have adequate industry experience ; the tools utilised by the organization and the talents of their manpower should suit your necessities.

Some firms do general information processing while some companies are specialized in some kinds of work. So, research the firms well before selecting the most acceptable one. Also, some corporations won’t be ready to try big volumes of work.

Therefore , the quantity of work that you have to hand will be the deciding aspect in most examples. In the same note, when services are sought large volumes of information, it is better to decide for those firms which are inexpensive. Anyway, quality shouldn’t be compromised. After building a working relationship with appropriate clients, successive info processing projects are more easy to execute.

SKG Technologies provides Data Entry Service at very low rates for small and medium business in all world. SKG Technologies also provides accounting services,virtual assistant services to its clients all over the world.

September 13 2009

How To Build Your Cisco CCNP Lab

The Cisco CCNP lab is one of the most difficult labs to build because it touches on so many different pieces of equipment. When you are building your Cisco CCNA lab, it is pretty easy as three Cisco router and three Cisco switches will put you in a pretty good position at a pretty reasonable price. Definitely a lot less then the price of attending a Cisco CCNA training class and you get to keep the equipment to practice on for as long as you like. When building a Cisco CCIE lab, you concentrate on one particular discipline such as CCIE Security, Voice, Service Provider, Storage or Routing and Switching so you only have to purchase Cisco equipment for that area of expertise.

Now with building your Cisco CCNP lab, you have to cover four different modules which encompass many different networking technologies. The modules are BSCI(Building Scalable Cisco Internetworks) which is basically advanced routing concepts extending everything you learned in your Cisco CCNA training to the next level. So this module requires a plethora of Cisco routers to complete most of these CCNP labs. BCMSN(Building a Cisco Multilayer Switched Network) which also extends on what you learned in your CCNA training from a Cisco Switching perspective adding in new concepts such as Layer 3 switching and QoS to a greater degree. This module really gets into the nitty gritty of Cisco Switching and thus requires some of the higher end, more expensive switches that are capable of Layer 3 switching. Additionally in a perfect scenario, you will need multiple of these Cisco switches to complete your labs and really get the full experience of the topics. Next we have ISCW(Implementing Secure Converged Wide Area Networks) which covers how to expand your current enterprise network to remote sites and teleworkers with a focus on configuring VPN client access and securing the remote access methods. Many of these concepts can be accomplished on the Cisco routers you purchased for your BSCI module, but the possibility of adding in a VPN concentrator or PIX firewall is nice, but not an absolute requirement if you are on a tight budget. Finally the last CCNP module is ONT(Optimizing Converged Cisco Networks) which focuses on how to get the most out of your existing network by prioritizing your traffic utilizing QoS. Much of this is applied to voice packets which is time sensitive packets that require QoS attention. In this module you will also be reviewing basic wireless security setups. So much of the QoS items will be exercised on the Cisco routers you purchased for the BSCI track and the Cisco switches you already purchased for the BCMSN track. So now you see that to a large degree, you will be able to use the equipment in the first two modules to support the concepts in the last two modules. We try to strike a balance between the amount of equipment, price of the equipment and labs that can be performed as most people do not have the budget to go out and spend $30,000 to cover every single concept that is presented in the Cisco CCNP curriculum. So that is what makes it so difficult to build a Cisco CCNP lab at a reasonable price.

CCNP Lab Approach

Now that you have an idea of what you are looking to accomplish in your Cisco CCNP lab from an equipment perspective, lets see how we might approach this. If you are not real strong on the features, pros and cons of the various routers, you may want to review our Cisco CCNA lab suggestions. Not only are there suggestions on building a Cisco CCNA lab, but we also cover many of the features and pros and cons of the various Cisco routers and Cisco switches.

Now if you are only just beginning your Cisco certification studies looking to obtain your CCNA, but are looking ahead to your CCNP, I applaud you! Network engineers must be able to sharpen their skill set of planning ahead of capacity. In this case, you are planning ahead for your Cisco certification career. So if you are at the Cisco CCNA level and are ready to purchase a CCNA lab but you want to make sure it scales well to your future Cisco CCNP studies, well then look at our Cisco Advanced CCNA/Starter CCNP kits. These were developed to give you the best experience possible from a Cisco CCNA perspective with the understanding that this kit will be used as a seed for you CCNP kit. All of the items in this kit will be able to be utilized in your Cisco CCNP lab so you will not be wasting any money. As with most things in the world, the more you pay for the kit, the more features you will get to play with in your Cisco lab. These Advanced CCNA/Starter CCNP kits are great if you do not have all the money for a full blown CCNP kit now or if you are 100% sure you will want to continue on to the Cisco CCNP certification. But then again, who doesnt want to progress in their career?

Common Cisco CCNP Lab Questions 12.4 IOS 12.4 IOS is a requirement for the routers. Says who? Why cant I use 12.3? Well, I guess you can, but when it states on the CCNP exam page that you should be using 12.4, I tend to listen to Cisco since it is their test and they get to modify it at their discretion! So what does that mean to you? 2500 routers and the normal 2600 routers cannot support 12.4. So if you have the budget, jump right to the 3640 or 2600XM series routers for your CCNP lab. They are the two most economical routers that will support 12.4. The 3640 is a modular router that comes with no built-in Ethernet or serial ports, but has 4 network module slots you can put various Ethernet, Serial and Voice cards into. The 2600XM series has one open network module slot and two WIC slots. The nice thing about the 2600XM series is that it has a built-in 100mb Ethernet port!

What Can I Do With My Old 2500 or non-XM 2600 routers? Even though Cisco states that the new CCNP exams are based on 12.4, that does not mean that you have to throw out all of your 2500 and/or non-XM 2600 routers and start from scratch. We can incorporate them into your new CCNP lab environment. However you must realize that you may not be able to see every feature work on each router since some of you routers may be running 12.3 and other 12.4. The old saying that you get what you pay for is applicable in this situation. The larger your budget is, the more features you will get. It is just like buying a car. The more money you have, the more bells and whistles you get.

Why Do Your Kits Mostly Have 3640s and 2600XM Routers? We have included the 3640 routers are they are the most economical way to build out your 12.4 lab supporting IPv6 and SDM. To support IPv6 and SDM you must have 128/32 on each of these routers. Since these are the two waves of the future and they are on the tests, you should be able to perform labs incorporating each.

How Many Routers Do I Need? Another great question! The more the better! Actually, we need to make it complex enough that we can see routes propagate, DHCP relay agents working, load balancing, route summarization, different OSPF stub types, Frame-Relay, IS-IS Intra-Area vs Inter-Area addressing, multi-casting, BGP groups and IPv6 on a dual-stack router. Wow, that was a mouthful! So more than two or three routers is a safe assumption to build your CCNP lab. We like to see about 8 routers in your lab. So if you can only afford a small kit, dont worry, you will still get tons of great experience from those kits! *Note, some people ask to be able to perform every concept that is covered in the book. That is not realistic for most customers who are self studying as this will cost well in excess of $20,000 per person.

How Many Switches Do I Need? We think four switches is a pretty good number for your CCNP lab. That gives you the ability to configure various scenarios which require multiple switches such as trunking in multilayer switched networks, multi-casting, QoS, VTP concepts such as pruning, creating loops and suppressing them with STP, controlling root bridge elections, multiple spanning tree environments, UplinkFast and BackboneFast, EtherChannel and Layer 3 through 7 switching. Two Layer 3 switches plus 2950 switches seem to work pretty well which being cost conscientious.

What Is A Layer 3 Switch? Wait until you get to BCMSN exam as this is a cool concept. This is a switch that can also do routing! So no need to bounce the traffic out of the switch, to a router only to have it sent right back to the same switch because the destination is on a different subnet. These switches will route that traffic within the switch and save precious bandwidth and time! We find that in a perfect world, you will have two of these switches, but you can get by with one. This way you can see how they communicate, trunk together and such.

Can You Give Me A General Idea Of The Lab Environment? That will slightly change as per the kit you purchase. However in following the labs you will for the most part have a frame relay switch interconnecting four different areas in which summarizations can happen. What Is A Terminal Server Router And Why Do I Want One? A very nice to have is a 2509 or 2511 access/terminal server router. This way you do not have to keep moving the console cable from router to router as you are configuring them. You can access all your routers and switches via the terminal server and connected octal cable. This is not going to function in your lab, but it is nice to have to make your lab much easier to use.

If you already have your Cisco CCNA certification, the above should have made a lot of sense to you. Also congratulations on your CCNA! You should have a very good grasp on the different features of the various Cisco routers and Cisco switches. Now you will just need to know what Cisco routers and Cisco switches you need to purchase to build your Cisco CCNP lab.

CCNP Lab Kit Options Well, we have four main Cisco CCNP labs available for you all at different price points. As mentioned before, the more you spend, the more bells and whistles you will be able to experience in your Cisco CCNP lab studies. We tend to prefer the Cisco Press books to accompany our Cisco CCNP labs. Who better to get this information from than straight from Cisco? The Cisco Press books come with full blown labs for the BSCI and BCMSN modules. We follow pretty closely the lab topologies presented in the BSCI and BCMSN books. This is because you will then be able to follow the accompanying labs. Now you must understand that to follow their labs exactly, you would have to spend easily twice as much as we are charging for any of these kits. So from our experience we have modified the kits with some less expensive Cisco routers and Cisco switches that will cover a majority of the concepts in the labs. Again, the more you pay for the kit, you will be able to experience more of the concepts. Also from our experience we determined a way to reduce the price of the kit was to remove some routers that were there primarily just to make the lab environment more complex by adding extra routers which thus introduced additional routes. Well when we are trying to keep things on a tight budget, we dont see the need to have three extra routers, all the Cisco modules and cables just so we can see a few extra routes in our tables. It would be one thing if these routers were $50 each, but when you take into consideration the router, the module, the cables and such you can easily be adding $1,000 or more to the price of your kit. When in essence much of that information is going to wind up in a route summarization anyway! So again, we have to look for the most bang for the buck in building these kits. As mentioned before, the Cisco CCNP lab is probably the most difficult to build because of all the different technologies it touches.

But there is a light at the end of the tunnel! You will be able to use all these pieces of equipment in your Cisco CCIE lab so they will not go to waste! Especially with the CiscoKits Trade-Up program which enables you to upgrade your Cisco routers and Cisco switches you purchased from CiscoKits. Please see the Trade-Up Program for details. But since you have most of the CCIE equipment already, you are well on your way to acing your Cisco CCNP exam and then conquering your Cisco CCIE certification.

Goto CertificationKits for your free Cisco CCNA, CCNP, and CCIE training along with many options for Cisco certification home lab kits!

September 12 2009

Linksys/D-Link Routers and your Cisco Lab

We get many CCNA students who ask us how to incorporate their Linksys/D-Link or similar Cable/DSL wireless router into their newly purchased Cisco CCNA lab. Although this can be done, it is not something we suggest.

I will touch on a few reasons we dont really recommend this setup, but I am sure if we really sat down and thought about it we could come up with more.

1)Depending on the model of the home Linksys/D-Link Cable/DSL router that you are talking about, many of them dont support the protocols you will be setting up in your Cisco CCNA home lab. Some of the newer ones will support RIP. But rarely will you see any of these home type routers support any of the advanced protocols such as OSPF, EIGRP and such. A few of them are now also supporting the ability to enter static routes, which is niceand they are improving with each generation but they still are not what you want to base your Cisco CCNA studies on.

2)Most of them come out of the box setup as DHCP servers. Unless you start playing around with those settings, this will conflict with some of the DHCP and other labs you should be doing in your CCNA lab. This generally leads to breaking your home network and then you have your spouse, parents, kits, etc complaining because you took down their Internet connection. The more they complain, the more you stress out and keep figure out the solution as everyone is yelling at you. Just dont do it!

3)Besides the ability to not support all the protocols a real Cisco router willthe Linksys/D-Link Cable/DSL routers will not be able to work seamlessly with many of the advanced security features you will find in a Cisco Router during your CCNA lab studies.

So what we suggest for the new Cisco CCNA student is to keep their home Linksys/D-Link Cable/DSL network separate from their Cisco CCNA lab network. Why besides the items listed above? Well another thing we tend to find is you are learning in the new CCNA lab network. You are going to break things and spend countless hours trying to figure out what you did wrong, how to fix it and what you broke. Many times you will never figure it out and just start over from scratch. Also one thing you will discover with Cisco routing is an issue with one Cisco router will propagate to other routers. For example, when an interface goes down on a router, the route is removed systematically from the route tables of all the routers. Thus routes are recalculated and you will be sent a different way to get to the destination. So long story short, we suggest in the beginning learning stages, keep your home network and CCNA lab network completely separate.

Integrating your home and CCNA networks sounds like a great idea until you totally mess it up, have no idea what you are doing or how to fix it while your spouse, kids, parents, whomever are yelling at you because they cant get to their myspace account.or worse yet, now you cant get your home network back working to the point where you can get to some of your favorite websites or email accounts. So just be patient and progress at a slow steady pace with your CCNA studies. Before you know it you will actually understand how to integrate the two networks from knowledge you gained through your studies and not because someone gave you an example to type in and follow. You will actually be able to sit down and figure it our for yourself. This is a true measure of your comprehension of the Cisco CCNA exam concepts and will provide you with a real life situation where you can test your Cisco CCNA expertise!

Goto CertificationKits for your free Cisco Certificationtraining. Cisco CCNA, CCNP, and CCIE training along with many options for Cisco home lab kits!

September 11 2009

Cisco Lab and Linksys/D-Link Routers

We get many CCNA students who ask us how to incorporate their Linksys/D-Link or similar Cable/DSL wireless router into their newly purchased Cisco CCNA lab. Although this can be done, it is not something we suggest.

I will touch on a few reasons we dont really recommend this setup, but I am sure if we really sat down and thought about it we could come up with more.

1)Depending on the model of the home Linksys/D-Link Cable/DSL router that you are talking about, many of them dont support the protocols you will be setting up in your Cisco CCNA home lab. Some of the newer ones will support RIP. But rarely will you see any of these home type routers support any of the advanced protocols such as OSPF, EIGRP and such. A few of them are now also supporting the ability to enter static routes, which is niceand they are improving with each generation but they still are not what you want to base your Cisco CCNA studies on.

2)Most of them come out of the box setup as DHCP servers. Unless you start playing around with those settings, this will conflict with some of the DHCP and other labs you should be doing in your CCNA lab. This generally leads to breaking your home network and then you have your spouse, parents, kits, etc complaining because you took down their Internet connection. The more they complain, the more you stress out and keep figure out the solution as everyone is yelling at you. Just dont do it!

3)Besides the ability to not support all the protocols a real Cisco router willthe Linksys/D-Link Cable/DSL routers will not be able to work seamlessly with many of the advanced security features you will find in a Cisco Router during your CCNA lab studies.

So what we suggest for the new Cisco CCNA student is to keep their home Linksys/D-Link Cable/DSL network separate from their Cisco CCNA lab network. Why besides the items listed above? Well another thing we tend to find is you are learning in the new CCNA lab network. You are going to break things and spend countless hours trying to figure out what you did wrong, how to fix it and what you broke. Many times you will never figure it out and just start over from scratch. Also one thing you will discover with Cisco routing is an issue with one Cisco router will propagate to other routers. For example, when an interface goes down on a router, the route is removed systematically from the route tables of all the routers. Thus routes are recalculated and you will be sent a different way to get to the destination. So long story short, we suggest in the beginning learning stages, keep your home network and CCNA lab network completely separate.

Integrating your home and CCNA networks sounds like a great idea until you totally mess it up, have no idea what you are doing or how to fix it while your spouse, kids, parents, whomever are yelling at you because they cant get to their myspace account.or worse yet, now you cant get your home network back working to the point where you can get to some of your favorite websites or email accounts. So just be patient and progress at a slow steady pace with your CCNA studies. Before you know it you will actually understand how to integrate the two networks from knowledge you gained through your studies and not because someone gave you an example to type in and follow. You will actually be able to sit down and figure it our for yourself. This is a true measure of your comprehension of the Cisco CCNA exam concepts and will provide you with a real life situation where you can test your Cisco CCNA expertise!

Visit CertificationKits for your free Cisco Certificationtraining. Cisco CCNA, CCNP, and CCIE training along with many options for Cisco home lab kits!

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