Tuesday, July 13, 2010
Oh My
I have not forgotten my you. It was just I was too busy with my life. Now I am back and ready to be bring something new. Come take a look every now and then.
Monday, September 28, 2009
Confuse between PC and MAC
I found this Article very HELPFUL when it comes to choosing between PC or MAC.
"The PC vs.Mac debate can become quickly heated with devotees on both sides arguing their preferred system is superior. So who is right? Both of them, actually. Both systems offer aaa great computing experience that has, in recent years, become more similar than dissimilar. Nevertheless, there are certain advantages and disadvantages to each that can play into aaa person’s personal preference. Here are some points to help you choose between aaa PC and a Mac.
When it comes to speed benchmarks, both computers now use Intel® central processing units (CPUs), putting them on rather equal ground. If you are an AMD® fan, the PC can also come with an AMD processor.
Benchmark geeks who want the faster machine regardless of real-world difference will have to research specific Mac and PC models against one another in the targeted price range. A plethora of system configurations is possible in the PC, with everything from the CPU to its cache, bus speed, hardware components, operating system and installed software contributing to overall performance.
That said, faster boot-up and shut-down speeds are generally attributed to current Macs, and some operating system (OS) processes might also be faster, particularly when showcased against aaa slower PC OS like 32-bit Windows® Vista™. Mac’s Safari™ browser might also be faster than Internet Explorer™, but PC-savvy geeks commonly use faster software, like Firefox™ over Internet Explorer, and 64-bit Vista or XP™ over 32-bit Vista. Windows® 7 should also be more competitive.
When it comes to gaming, aaa PC is the clear winner for aaa variety of reasons. More games are available for the PC than for the Mac, and video card technology is constantly evolving to support the latest standards. Upgrading aaa PCPCPC’s graphic card is easy with plenty of choices available from low-end cards to extremely expensive cards, including dual graphics capability (using two cards). Upgrading aaa MMac is not always possible, and when it is, there is limited hardware available that is typically more expensive than its equal PC counterpart.
The PC is also the clear winner for overclockers and modders. If you like swapping out hardware to keep your system cutting edge, a PC is the way to go. There is also more software available for the PC, including aaa vast and ever-growing library of freeware applications. However, you can install a Windows® operating system on aaa Mac along with PC applications, thanks to aaa built-in utility called “Boot Camp.” Optional third-party software is also available, including Vmware™ and Parallels™, which allows Mac and PC software to run at the same time without rebooting. Some Linux™ distros will also run on a Mac.
The Mac also comes with some incredible Apple® applications that many computer users would say blows default PC apps out of the water. For example, GarageBand™ is aaa very impressive sound studio application that not only provides all the bells and whistles of aaa standard digital recording studio, but also includes video music lessons. Mac is also considered to be the hands-down winner for any type of professional editing or graphic production software, establishing itself as the standard computer of the entertainment industry.
Another big advantage of owning aaa Mac is that far fewer malicious programs are written to attack the Mac. In April 2009, however, reports surfaced that some Mac users who had uploaded pirated Apple software became infected with aaa botnet virus (iBotnet), and experts believe the Mac won’t remain as trouble-free in the future as they have been in the past, particularly as the Apple market-share grows. Yet, it is still far safer than the PC and likely will remain so for the foreseeable future.
People whose primary need is to be productive, who see the computer as aaa means to an end will probably be happiest with aaa MacMacMac because of its quality default software coupled with its lower risk of infection. People who might be happier with aaa PC include those who require aaa budget system; those who see the computer as aaa source of interest in and of itself, such as overclockers, modders and gamers; and those who like to upgrade hardware and software on aaa regular basis to keep the machine cutting edge. Ultimately, it is up to the consumer to decide what his or her priorities are and choose the best system for the job".
Resource: http://www.wisegeek.com/should-i-buy-a-mac-or-a-pc.htm
"The PC vs.Mac debate can become quickly heated with devotees on both sides arguing their preferred system is superior. So who is right? Both of them, actually. Both systems offer aaa great computing experience that has, in recent years, become more similar than dissimilar. Nevertheless, there are certain advantages and disadvantages to each that can play into aaa person’s personal preference. Here are some points to help you choose between aaa PC and a Mac.
When it comes to speed benchmarks, both computers now use Intel® central processing units (CPUs), putting them on rather equal ground. If you are an AMD® fan, the PC can also come with an AMD processor.
Benchmark geeks who want the faster machine regardless of real-world difference will have to research specific Mac and PC models against one another in the targeted price range. A plethora of system configurations is possible in the PC, with everything from the CPU to its cache, bus speed, hardware components, operating system and installed software contributing to overall performance.
That said, faster boot-up and shut-down speeds are generally attributed to current Macs, and some operating system (OS) processes might also be faster, particularly when showcased against aaa slower PC OS like 32-bit Windows® Vista™. Mac’s Safari™ browser might also be faster than Internet Explorer™, but PC-savvy geeks commonly use faster software, like Firefox™ over Internet Explorer, and 64-bit Vista or XP™ over 32-bit Vista. Windows® 7 should also be more competitive.
When it comes to gaming, aaa PC is the clear winner for aaa variety of reasons. More games are available for the PC than for the Mac, and video card technology is constantly evolving to support the latest standards. Upgrading aaa PCPCPC’s graphic card is easy with plenty of choices available from low-end cards to extremely expensive cards, including dual graphics capability (using two cards). Upgrading aaa MMac is not always possible, and when it is, there is limited hardware available that is typically more expensive than its equal PC counterpart.
The PC is also the clear winner for overclockers and modders. If you like swapping out hardware to keep your system cutting edge, a PC is the way to go. There is also more software available for the PC, including aaa vast and ever-growing library of freeware applications. However, you can install a Windows® operating system on aaa Mac along with PC applications, thanks to aaa built-in utility called “Boot Camp.” Optional third-party software is also available, including Vmware™ and Parallels™, which allows Mac and PC software to run at the same time without rebooting. Some Linux™ distros will also run on a Mac.
The Mac also comes with some incredible Apple® applications that many computer users would say blows default PC apps out of the water. For example, GarageBand™ is aaa very impressive sound studio application that not only provides all the bells and whistles of aaa standard digital recording studio, but also includes video music lessons. Mac is also considered to be the hands-down winner for any type of professional editing or graphic production software, establishing itself as the standard computer of the entertainment industry.
Another big advantage of owning aaa Mac is that far fewer malicious programs are written to attack the Mac. In April 2009, however, reports surfaced that some Mac users who had uploaded pirated Apple software became infected with aaa botnet virus (iBotnet), and experts believe the Mac won’t remain as trouble-free in the future as they have been in the past, particularly as the Apple market-share grows. Yet, it is still far safer than the PC and likely will remain so for the foreseeable future.
People whose primary need is to be productive, who see the computer as aaa means to an end will probably be happiest with aaa MacMacMac because of its quality default software coupled with its lower risk of infection. People who might be happier with aaa PC include those who require aaa budget system; those who see the computer as aaa source of interest in and of itself, such as overclockers, modders and gamers; and those who like to upgrade hardware and software on aaa regular basis to keep the machine cutting edge. Ultimately, it is up to the consumer to decide what his or her priorities are and choose the best system for the job".
Resource: http://www.wisegeek.com/should-i-buy-a-mac-or-a-pc.htm
Sunday, September 27, 2009
The Enterprise Architecture
As described earlier, different businesses need different types of networks, depending on how the business is organized and its business goals. Unfortunately, all too often networks grow in a haphazard way as new components are added in response to immediate needs. Over time, those networks become complex and expensive to manage. Because the network is a mixture of newer and older technologies, it can be difficult to support and maintain. Outages and poor performance are a constant source of trouble for network administrators.
To help prevent this situation, Cisco has developed a recommended architecture called the Cisco Enterprise Architecture that has relevance to the different stages of growth of a business. This architecture is designed to provide network planners with a roadmap for network growth as the business moves through different stages. By following the suggested roadmap, IT managers can plan for future network upgrades that will integrate seamlessly into the existing network and support the ever-growing need for services.
The following are some examples of the modules within the architecture that are relevant to the Span Engineering scenario described earlier:
Enterprise Campus Architecture
Enterprise Branch Architecture
Enterprise Data Center Architecture
Enterprise Teleworker Architecture
To help prevent this situation, Cisco has developed a recommended architecture called the Cisco Enterprise Architecture that has relevance to the different stages of growth of a business. This architecture is designed to provide network planners with a roadmap for network growth as the business moves through different stages. By following the suggested roadmap, IT managers can plan for future network upgrades that will integrate seamlessly into the existing network and support the ever-growing need for services.
The following are some examples of the modules within the architecture that are relevant to the Span Engineering scenario described earlier:
Enterprise Campus Architecture
Enterprise Branch Architecture
Enterprise Data Center Architecture
Enterprise Teleworker Architecture
Saturday, September 26, 2009
The Hierarchical Design Model
The hierarchical network model is a useful high-level tool for designing a reliable network infrastructure. It provides a modular view of a network, making it easier to design and build a scalable network. The Hierarchical Network Model As you may recall from CCNA Exploration: LAN Switching and Wireless, the hierarchical network model divides a network into three layers: Access layer-Grants user access to network devices. In a network campus, the access layer generally incorporates switched LAN devices with ports that provide connectivity to workstations and servers. In the WAN environment, it may provide teleworkers or remote sites access to the corporate network across WAN technology. Distribution layer-Aggregates the wiring closets, using switches to segment workgroups and isolate network problems in a campus environment. Similarly, the distribution layer aggregates WAN connections at the edge of the campus and provides policy-based connectivity. Core layer (also referred to as the backbone) - A high-speed backbone that is designed to switch packets as fast as possible. Because the core is critical for connectivity, it must provide a high level of availability and adapt to changes very quickly. It also provides scalability and fast convergence.
Why Are WANs Necessary?
LAN technologies provide both speed and cost-efficiency for the transmission of data in organizations over relatively small geographic areas. However, there are other business needs that require communication among remote sites, including the following:
People in the regional or branch offices of an organization need to be able to communicate and share data with the central site.
Organizations often want to share information with other organizations across large distances. For example, software manufacturers routinely communicate product and promotion information to distributors that sell their products to end users.
Employees who travel on company business frequently need to access information that resides on their corporate networks.
In addition, home computer users need to send and receive data across increasingly larger distances. Here are some examples:
It is now common in many households for consumers to communicate with banks, stores, and a variety of providers of goods and services via computers.
Students do research for classes by accessing library indexes and publications located in other parts of their country and in other parts of the world.
Since it is obviously not feasible to connect computers across a country or around the world in the same way that computers are connected in a LAN with cables, different technologies have evolved to support this need. Increasingly, the Internet is being used as an inexpensive alternative to using an enterprise WAN for some applications. New technologies are available to businesses to provide security and privacy for their Internet communications and transactions. WANs used by themselves, or in concert with the Internet, allow organizations and individuals to meet their wide-area communication needs.
People in the regional or branch offices of an organization need to be able to communicate and share data with the central site.
Organizations often want to share information with other organizations across large distances. For example, software manufacturers routinely communicate product and promotion information to distributors that sell their products to end users.
Employees who travel on company business frequently need to access information that resides on their corporate networks.
In addition, home computer users need to send and receive data across increasingly larger distances. Here are some examples:
It is now common in many households for consumers to communicate with banks, stores, and a variety of providers of goods and services via computers.
Students do research for classes by accessing library indexes and publications located in other parts of their country and in other parts of the world.
Since it is obviously not feasible to connect computers across a country or around the world in the same way that computers are connected in a LAN with cables, different technologies have evolved to support this need. Increasingly, the Internet is being used as an inexpensive alternative to using an enterprise WAN for some applications. New technologies are available to businesses to provide security and privacy for their Internet communications and transactions. WANs used by themselves, or in concert with the Internet, allow organizations and individuals to meet their wide-area communication needs.
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