Mobile Communication Technology

Mobile communication technology is a term that is basically the technology used and the mode of communication for mobile devices such as cell phones, laptops, handhelds, PDAs, global positioning systems, payment systems wireless card, etc.

There are many technologies that are used in communication devices such as wireless fidelity (Wi-Fi), GSM (2G and 3G), GPRS, Bluetooth, VPN, dial-up modems, etc. The use of these technologies can easily contact the office, home, car and travel anytime. Use of the Internet or WAP services to access the Internet or on the phone or laptop is known as mobile computing is also considered part of the mobile communication technology.

Some of the most important technologies that are used in the field of mobile communication can be listed as follows:

1. GPRS: General Packet Radio System is a technology that uses the GSM mobile communication data. It is mainly used for the provision of data services on mobile devices. One drawback of the GPRS connectivity is slow, but with the advent of third generation GSM, the speed limit has been increased and the transmission of data has become very fast. GPRS has a unique feature by which a user can easily transmit the data, while making calls.Read More

Mechanisms Used in Data Communication

There are many ways a company can secure data transfers. Few data encryption mechanisms listed below.

1. hash coding
2. Public key encryption (asymmetric encryption)
3. Private key encryption (symmetric encryption)

Use of one or more of the above encryption mechanisms, the following technologies have been developed.

1. Secure Sockets Layer (SSL)
2. Secure HTTP (S-HTTP)
3. Virtual Private Networks (VPN)

Secure Sockets Layer (SSL)

SSL is one of the most popular of safe data transfer. First, the client establishes a connection to the server communication of basic information about the level of security, digital certificates, public key encryption, etc. Next, the customer should contact the appropriate certification authority (CA) to verify the authenticity of the digital certificate and the server. After authentication, a private session key is generated. This will provide faster processing on the client and server. After the session ends, the session key is discarded. Read More

Data Trunk Transmission

Now then, as the infiltrators trying to get through this system, it is certain that they will realize ways to get through it, but as you sift through the data we collected could also go back and look at all the previous data that came through, apparently looking at the data without time. In other words, time is not a variable, as all communications past and present would be available. Algorithms could find strong variations in different software viruses, malware and worms - and smarter on the go with artificial intelligence for new exploits.

Hackers could shut once and for all? We could take all terrorists? Can we use this to keep America safe? Perhaps the answer is yes, although it is a moving target, and every time you improve, so do the bad guys. However, this system only super well funded hackers, perhaps sponsored by the State would have the money to keep up with this system. In the future, as long as no one uses negative purposes, like the other countries mentioned above, U.S. would be much safer with that strategy. Please consider all this.

Serial Data Communications

Even with the widespread use of universal serial bus (USB), for many of our customers who use the drives, serial ports are still an important interface. Not only on computers but also digital cameras, printing equipment, modems and a wide range of network equipment for industrial automation, continue to use the serial port connectivity. (Although, if you examine the computers made in recent years, is likely to find a single serial port along with, in some models, a parallel port.)

One of the great advantages of serial communications is simplicity achieved by taking 8-bit bytes and transmitted one bit at a time by a single wire. This helps keep costs down and control wiring single communications protocol. Of course, compensation is that the transmission of 8 bits in series instead of in parallel, is eight times slower! (Remember that the parallel ports were developed after the serial ports.

How do serial communications really? However, despite the mentioned series of 8-bit transfer in the cable, in fact control bits are also transmitted. A bit of "home" to indicate data is coming, a 'stop' bit to indicate data over, and a parity bit (optional).Read More

Data Communication

A career in data communications allows you to work in an engineering discipline, helping to computer systems and devices "talk" to each other. Networking, routers, routing protocols, and networking over the Internet is directly related applications, and of interest to the data communication careers and those considering a degree in data communication.

Data communication is sometimes considered a sub-discipline of telecommunications, computer science, computer engineering and computer science, which is a major reason why people who have the education, experience and interests of these disciplines ultimately can pursue a career in data communications. Another reason is that computer networks rely heavily on these disciplines, making a direct connection between the fields.

Then have students and career professionals strong candidates for careers in data communications:

Students and professional technology experts who are interested in how computer networks "talk to each other" and want to influence this communication.
Youth ready to enter the world of work and experienced professionals who want to "reinvent" themselves with interests in local area networks (LAN) and wide area networks (WAN).Read More

Different Types Of Data Communication Media

The process in which data is transferred from one computer to another is known as media. Data communication involves the transmission of digital information to various electronic devices via wireless or cable. The two commonly used computer media used are limited and unbounded media.

R. Forced Media

The transfer of data through physical connections referred as defined media in which signals are sent to other external devices in a computer network. Computers can be interconnected to share files and devices on a wired network via which facilitates faster communication of information. Media Limited is a faster data communication that provides a high speed transfer signals over long distances and is the most reliable means of sending messages.

Bounded media are classified into three types of data communications that allows connection of different types of network. These cables include:

1. Coaxial cable

It is most common media which is delimited many electronic data transfer and is designed with two parallel copper conductors. It has a solid copper conductor that transmits the signal core and coated with a protective cover to reduce electromagnetic interference. The coaxial cable is in different calibers, affordable and easier to work with them. They are easy to install and can support up 10Mps average attenuation capacity. Despite its popularity, the only serious drawback of it is that the entire network is always affected by a single cable failure. Read More

Surveillance Technologies

This stage is necessary to consider the design and model of surveillance technology is best suited for your home. Choose a stylish device that is compact. Stay away from the cameras are bulky and easy to read marauders.

The selected color is significant. Choose safety devices and safety that match the color of the area where you are, such as ceilings or walls. It is better to go shopping, be specific about the number of items you need and areas that you feel need to control.

One of the questions that you should ask yourself when it comes to this type of surveillance technologies is the kind of resolution you need. To protect your family and property, the purchase of a high resolution camera is the most appropriate option. You also need to look for quality image sensors.

To start browsing, you will realize very quickly that there are a variety of styles of the camera, not to mention styles to choose from. It can be a bit confusing for the beginner. To simplify your decision, do a bit of style and color resolution of the device you want to buy. For safety devices must be installed outdoors, look for those that are resistant to weathering.

Cloud Computing and Data Security

• Community cloud - In this concept of Cloud, several organizations from a specific community with common concerns share infrastructure between themselves. They could be managed either internally or by a third-party and the hosting could be internal or external. The costs have are distributed among fewer users.

• Public cloud - This concept of Cloud is established when several organizations having similar requirements and seeking to share infrastructure are concerned. This definitely is more viable in terms of monetary benefit, as the resources (storage, workstations) utilized and shared in the community are used by a huge number of consumers.

The advantages of Cloud Computing offering in IT services include the following:
1. Transformation into on demand IT-as-a-service
2. Greater business agility, on-demand provisioning
3. Self-provisioning & deployment of applications
4. Significant savings in total cost of operations through right sizing and operational efficiency
5. Dynamic capacity on demand to reduce time to market
6. Strategically align the business on long-term opportunities while optimizing on operations

The transition to Cloud however, is accompanied by a number of data security issues that need to be looked into. Most organizations use relational databases to store the most sensitive data, hence the need of data security while moving to Cloud becomes all the more important and imperative. So, as the consumers work on migrating applications to Cloud, they need to be careful about three main attributes involving data security.

1. User access privileges: Any sensitive data that is processed outside the enterprise is prone to an elemental risk. As the services are outsourced, they kind of discount the physical, logical and personnel regulations which the IT departments could exercise over the in-house programs.

2. Server Elasticity: One of the key perks of Cloud computing is flexibility. So, keeping apart the fact about users having knowledge of the exact location of where their data is hosted, the servers hosting the concerned data can be provisioned and de-provisioned regularly to mirror the current requirement capacity. This evolving topology can be a challenge for the technologies banked on today and could be very hard for the management to constantly update configurations fitting to every such change.

3. Regulatory Compliance: Data integrity and data security are but the ultimate responsibilities of the organizations even if it is held by a service provider. The whole system of educating the auditors, demonstrating that their data is safe and secure even when there is no physical control over systems, is challenging. They need to provide them with the quintessential visibility into all activity.

Controlling access and monitoring of cloud administrators is a cutting point to make sure that sensitive data is secure. While the users may want to maintain background checks of their own privileged users and may also enforce significant physical monitoring, even if this be done by their cloud provider - it is a process which is not their own. Therefore that would mean compromising some element of power or control. These individuals may have almost unlimited access to the infrastructure, something they require in order to maintain and check the performance and availability of the cloud resources for all customers.