Administration & Professional Networking

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How to Calculate the Cost of Applications in a Cloud Computing Data Center

The simple fact is that cloud computing data center won’t necessarily be the best option for your company. When evaluating the cloud option, it is important to accurately calculate the cost of applications [more…]

Cloud Computing Delivery Models

The following figure shows the various types of cloud services as three distinct models: Infrastructure as a Service, Platform as a Service, and Software as a Service. In reality, the lines between the [more…]

Top Benefits of Unified Messaging

Unified messaging provides a number of benefits for users to manage their businesses with accessible, interfaced electronic communication systems, such as e-mail, voice, messenger services. [more…]

Key Unified Messaging Features

The concept of unified messaging and the features it delivers vary from vendor to vendor, but in general these are some of the capabilities you can expect: [more…]

Unified Message Viewing Tools

With unified communications and the convergence of voicemail with e-mail and with the PC desktop, you have new ways to interact with voicemail messages. You're probably used to some sort of light on your [more…]

Unified Voicemail and E-Mail

Voicemail is an essential unified communications feature to have for a phone system. The capability to leave a voicemail is certainly better than having the phone ring indefinitely with no way to reach [more…]

Unified Message Sharing

Because unified messaging enables you to receive your voicemails and faxes embedded or attached to e-mails in a single, unified inbox, it also enables you to work with those message types any way you can [more…]

Unified Communications For Dummies Cheat Sheet

Unified communications can link all of your messages and contacts into a single presence. You can see, hear, and communicate with colleagues and customers through any common channel, and route it to a [more…]

Reasons for Moving to Virtualization

If you’re trying to decide if virtualization is right for your organization, whether from an economic or technological standpoint, consider these reasons for taking the virtualization plunge: [more…]

Types of Virtualization

Currently, most of the activity in the virtualization world focuses on server virtualization —– the data centers or server farms. The three main types of server virtualization are: [more…]

Major Players and Products in Virtualization

Once you’ve decided on switching to a virtualized environment, where do you go for solutions, support and products? This list represents the major players in virtualization: [more…]

Virtualization Project Steps

After you’ve evaluated virtualization and want to move forward with it, it’s time to implement a virtualization plan. Don’t jump right in, the first steps are to create a virtualization project using these [more…]

Virtualization Mini-Glossary

To help you get a better understanding and expand your knowledge of virtualization, get to know these useful terms and how they apply to virtualization and its process: [more…]

Virtualization For Dummies Cheat Sheet

Virtualization saves money, energy, and space. After you’ve decided to go virtual, take steps to make implementation easier: Get to know some important terms about virtualization, types of virtualization [more…]

OSI for CCNA Layer 3: Network

The CCNA exam covers data packets; the network layer routes data packets across networks that link the sending and the receiving host. In a nutshell, the network layer does the following: [more…]

OSI for CCNA Layer 2: Data Link

The CCNA exam has extensive coverage of data routing. Data routing is handled by the data link layer of the OSI. The data link layer does the following: [more…]

OSI for CCNA Layer 1: Physical

The CCNA exam has extensive coverage of hardware. That's the physical layer. The physical layer provides the electrical, optical, or over-the-air connection between the sending host device and the receiving [more…]

OSI for CCNA Layer 7: Application

The CCNA exam requires knowledge of the OSI reference model's application layer. This layer represents the various network applications such as e-mail reader, Web browser, Hypertext Transfer Protocol [more…]

OSI for CCNA Layer 6: Presentation

As you prepare for the CCNA exam, the presentation layer is mostly concerned with data format. It converts the data between different formats so that both the sender and the receiver can use heterogeneous [more…]

OSI for CCNA Layer 5: Session

As a certified CCNA, you'll work in communications between applications. Some applications need to open logical communication channels between the computer hosts. Logical communication channels [more…]

OSI for CCNA Layer 4: Transport

On the CCNA exam, you'll work with hosts. The transport layer manages the transport of data between two hosts communicating over a network. In a nutshell, the transport layer does the following: [more…]

IT Architecture: Automating System Maintenance

Part of IT architecture includes improving efficiencies by restructuring enterprise resources. The more system maintenance processes that you automate in the IT architecture, the greater cost savings you [more…]

Identifying Common IT Architecture Tasks

Taking on an IT architecture project means dealing with myriad detailed tasks. No matter the nature of your IT architecture project, however, be sure to cover this abbreviated checklist of common, high-level [more…]

IT Architecture: Standardizing Technology

Standardization of technology is a common part of IT architecture projects. A standardized technology reduces complexity and offers benefits such as cost savings through economy of scale, ease of integration [more…]

IT Architecture: Consolidating and Centralizing Technology Resources

A good IT architecture plan improves efficiencies. When your IT architecture program includes consolidation and centralization of technology resources, particularly in the data center, you gain improved [more…]


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