The seven types of data networks you are likely to encounter

Enterprises rely on communication networks to transfer information. Each uses a system of symbols, characters, signals or language to exchange information and communicate through tackles such as phones and computers. There's an awful lot of talk about networking, but is it really a good way to get a new data networking jobs. Individually network has specific purposes and uses, such as voice routing, video conferencing, email, and other UCC tools, as well as file transfers and critical business transactions. Networks are needed to help companies reduce their total investments and improve their agility.
For these applications to work, predictable infrastructure is required. Network requirements are becoming more and more critical as the application load and user expectations increase. What kind of networks can VAR encounter when working with corporate clients? Some of the most essential and ordinary are defined here:
Local Area Network (LAN) - Local area network is a computer network in a localized area, such as a local area network. In an office or on a campus. All computers are connected via LAN through a hub or switch. The more computers in the LAN, the slower the LAN will be.
Wide Network (WAN) -  Wide area network covers a large geographical area and usually consists of several computer networks. The Internet is a kind of WAN that trusts on an extensive global network of service providers that use switches, modems, routers, and servers to ensure connectivity for employees and organizations around the world. It is a network of connected computers that store data, media, and web pages.
Public Telephone Network (PSTN) - The public telephone network is the telephone version of the Internet. It is a telecommunication network with an open circuit. Today's system is mostly digital and contains services for both mobile phones and landline telephones. Telecommunication is the spread of signals over long distances, usually electromagnetic waves. It is used for radios and phones. The transmission of computer data is also a form of telecommunications.
Metropolitan Area Network (MAN) - MAN is a network that uses technology that spans an entire city. For example, a business can use a MAN to connect LANs to all its offices in the city.
Wireless networks – A wireless networks deliver communication and network connectivity to strategies without cables or wires. Wi-Fi is a wireless network for processers that have remote access to the system. Bluetooth, which connects to a nearby mobile phone, is a version of a shorter range wireless network that supports voice and data transmission, but only a few meters from the communications device it's working with.

Mobile and PCS - These systems use multiple wireless communication technologies for cellular and PCS devices. The systems divide the covered region into several geographic areas. Each section has a low power transmitter or an antenna device with a radio relay to route calls from one area to the next.
Satellite Networks – A satellite networks are existing in several configurations. Companies operating by telephone use satellites for data and voice transmission to land mobile phones. Some satellite networks deliver navigation information, military surveillance or weather data. Still others offer TV programs, radio programs and even broadband services.
Data communication is the communication of digital messages to external devices, including telephones, radios, computers and mobile devices. Understanding the basic types of data communication networks allows VARs to discuss data transmission with clients and see them as educated, trusted advisors.

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SDN: Do Network Technicians Need Programming Skills

What is a Software Defined Network (SDN)?
For some years, the term Software-Defined Network (SDN) has become increasingly popular and is growing slowly. We also hear about the diminishing role of "classic" network technicians who acquired their knowledge several years ago, mastering pack network theory such as Ethernet, OSI / ISO, and learning how to configure their devices. Network, such as Port port access or IP route. Articles like "I'm sorry, network jobs are changing" or "Do network professionals have to be programmers?" Personally, I see some concern among my colleagues and network administrators about how SDN can shake the market.
What change does the SDN bring?
An association consisting of 6 switches and 2 routers may not need the SDN revolution. However, managing an infrastructure of tens of thousands of corporate offices and thousands of network devices, and integrating with your private or large-scale cloud, is a great opportunity to use SDN results. In this case, the SDN can solve a problem with network ordering, automatic diagnostics, immediate reconfiguration and integration of many IT areas (for example, systems, network, storage).

Is SDN then a threat to "classic" network engineers? Paramours of pure CLI form and BGP session configuration may not want to invite the SDN solution, as they will somehow take the playground, which is the command line, with them. On the other hand, for SDN architects it can be an intriguing new adventure that can use the IP network design capabilities to design and implement such a network. Let's take a look at the new open areas and completely new specialties, such as Network Automation Engineer and SDN Engineer, for which engineers need programming skills (which may not be top notch) and knowledge of IP / Ethernet theory for writing. scripting and SDN development Management applications will be an inevitable element of the SDN ecosystem.

Something else?
With "Open" and "Programmability", the SDN opens the door to fully exploit the potential of network devices that were previously limited by the configuration language given by the manufacturer. Imagine that with the script and NetFlow we can develop interesting functionality for ourselves in the data layer. This method to the above concept seems to be more an opening than a closing!

Is it possible to be trained in SDN?
This broad problem obviously combines programming knowledge with knowledge of network architecture and Ethernet / IP. An SDN course, which we now call "Network Coding (SDN Practice)," will be featured on our training map shortly. So stay connected!

Many discussions of software-defined networks have focused on the future of network engineers and how they need to develop new capabilities to adapt to the future of automated and programmable networks.

In fact, the topic appeared on Wednesday at a key panel at Interop Las Vegas, led by UBM Tech, the parent company of InformationWeek. Steve Shah, senior manager of product management at Citrix, said network educators need to develop their automation expertise. At the moment, there are not many IT people with network and programming language skills like Python, he said.
He agreed with Arpit Joshipura, vice president of product management and marketing at Dell Networking. "You have to program the network, not implement it," he said. "This is the fundamental change that will come in five years."

However, Dominic Wilde, VP of Global Product Line Management at HP Networking, said "you have to become suddenly overnight" is wrong.
salary
According to Glassdoor, the normal national sdn engineer salary for Juniper SDN Cloud Engineers in the US is $ 95,000. The average salary for a Juniper SDN Cloud Engineer in Washington DC is $ 89,259. The salary estimate indicates that the average salary for the Juniper SDN Cloud Engineer is $ 86,094 per year for the Engineer Validator and $ 143,883 per year for the Performance Engineer.

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What does a Network Engineer | Role, Responsibilities, Job Profile & Salary

A network engineer is a technology qualified professional with the skills necessary to plan, implement, and monitor computer networks that support voice, data, video, and internal wireless networks.
Although the Network Engineer and Network Administrator activity titles are rarely used interchangeably, a Network Engineer usually has more executive responsibilities than a Network Administrator. The engineering side tends to be more about planning, design and technical specifications, while the management side deals mainly with maintenance, management and day-to-day efforts. Generally, a network engineer has more training and earns more than a network administrator.
The Responsibilities of a Network Engineer
Network engineers focus on providing high availability network infrastructure to support online and on-premises user information technologies. Network engineers often overlap with other functions, such as computer network architects or security system engineers, and work internally within an organization or as external consultants. A network engineer is a technology expert with the skills necessary to plan, implement, and monitor computer networks that support voice, data, video, and internal wireless networks.
Although the Network Engineer and Network Administrator activity titles are rarely used interchangeably, a Network Engineer usually has more executive responsibilities than a Network Administrator. The engineering side tends to be more about planning, design and technical specifications, while the management side deals mainly with maintenance, management and day-to-day efforts.
Generally, a network engineer has more training and earns more than a network administrator.
The Responsibilities of a Network Engineer
Network engineers focus on providing high availability network infrastructure to support online and on-premises user information technologies. Network engineers often overlap with other functions, such as computer network architects or security system engineers, and work internally within an organization or as external consultants.
Network engineers design and implement network configurations, solve performance problems, perform network monitoring and configure security systems, such as firewalls. It often refers to a CIO, an information security director and other lines of business leaders to discuss and decide on the overall business objectives, policies and updates on the status of the network. In many situations, network engineers work closely with project other engineers and managers, manage capacity, and perform remote or on-site assistance.
Qualifications for a network engineer
Several universities and other institutions offer training programs for network engineers. Top network engineer skills, may only need one associate to get an entry-level job, but most posts require a bachelor's degree in computer science or new experience. Many network engineers are also selected from fields such as electrical, physical or mathematical engineering. For many engineers, qualifications, and further training are closely linked to the Cisco engineering certification program, which offers five levels of professional practice. Other certifications are available from organizations and vendors, such as Aruba, Alcatel-Lucent, Juniper Networks, Microsoft, Riverbed Technology Inc., SolarWinds, Hewlett Packard Enterprise, Extreme Networks Inc. and IPv6 Forum.
In addition to technical skills, network engineers need analytical, leadership, and organizational skills. Attention to detail and problem-solving skills are also necessary. Engineers need to be able to understand complex networks and identify problems or suggest ways to improve them. They must also be able to work collaboratively as well as train other engineers and support staff to operate the network. And they must be flexible enough to work with engineers and coworkers, who may have no understanding of the system.
Increasingly, network engineers need to know more about applications and software development, reflecting the growing role of automation and software-defined networks. Therefore, engineers need to recognize traffic flows, application priority, and data transport. Also, engineers should be aware of hyper-convergence, virtualization, security, containers, WAN area networks, and storage engineering.
Network Engineer Career
Network engineers' salaries range from $ 46,500 to more than $ 115,000 annually, depending on skills and experience. Engineers can also make bonuses, and some employers offer additional profit sharing. Network engineers work fourty hours a week, but can be called on weekends, evenings, and outside working hours to resolve technical issues.
Network engineers can also look for different paths in the field of the network. Network analysts specialize in the installation and maintenance of the system and often cross the technical and commercial sides of an organization. Network managers play a similar role, but they should train and direct network technicians. Several specialized features include cloud network architects that help organizations deploy cloud infrastructure and network security experts that detect and prevent network security threats. Other experts focus on VoIP, telecommunications and data center engineering.

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System Administrator: What does He Do? Features and Skills

In IT, a System Administrator (sysadmin) is the one who accepts a multi-user computing atmosphere and certifies the optimal and continuous performance of IT services and supports systems.
The system administrator work plan differs considerably from employer to employer. In a broad initiative, the title system administrator can be used to describe any administrator responsible for a specialized computer system, such as the servers they support. Depending on the specialty, the system administrator may also be known as a data center administrator, network operations center (NOC) administrator, virtualization administrator, server administrator, or database administrator.
Smaller IT departments usually assign a wide range of responsibilities to the system administrator. In some organizations, a system administrator may need to take care of everything from desktop computers to end-users, to the local corporate network, to the VoIP phone system, and hybrid cloud storage. Dependent on the culture of the association, the system administrator can also be qualified by way of a System Operator (SysOp) or Application Support Engineer (ASE).
Who is the System Administrator?
The distinction between programmer and system administrator varies considerably between mainframe sites. In small IT organizations, where one person may have multiple roles, terms can be used interchangeably.
In large IT organizations with multiple departments, job responsibilities tend to be more clearly separated. System administrators make several regular tasks related to keeping critical business data, while the system programmer attention on maintaining the system itself. One of the reasons for the segregation of duties is to follow auditing procedures, which often require that no one in IT can have free entree to sensitive data/information or resources.
Examples of SA (System administrator) include the database administrator (DBA) and the security administrator.
While the expertise of system programmers is primarily in the hardware and software areas of the mainframe, Freelance system administrators are more likely to have application experience. It often interfaces directly with application developers and end-users to ensure the administrative aspects of applications are met. These roles are not necessarily specific to the mainframe environment but are critical to their proper functioning.
In large IT organizations, the system administrator provides maintenance of the system software environment for business purposes, including the maintenance of daily systems to ensure their proper operation. For example, the DB administrator must ensure the integrity and efficient access to the data stored in the database management systems.
Other examples of common system administrator tasks may include:
• Installation of the software
• Add and delete users and manage user profiles
• Maintenance of access lists to security resources
• Manage storage devices and printers
• Network and connectivity management
• monitor system performance
Check Out: Software Administrator Definition
For troubleshooting purposes, the system administrator typically relies on support from the Software Vendor Support Center to diagnose problems, read downloads, and identify patches. In cases where these jobs/tasks are not performed by the System programmer.
Features and Skills of the System Administrator
Due to the wide range of tasks of system administrators in various organizations, the skills required for system administrators are often extended, as are salary scales. In general, system administrators should be comfortable with application and file servers, desktops, networks, databases, information, and storage security systems. Knowledge of several operating systems is often required, as well as scripts and programming. Virtualization and cloud computing services have also become essential for the job.
Because the jobs generally include provisioning, arrangement, and administration of physical and virtual servers, in addition to software running on servers and supporting hardware, a system administrator must be comfortable with the installation and troubleshooting of IT resources, establish and manage user accounts, update software patches and perform backup and recovery activities.
Non-technical skills are also important for Cloud system administrators. Because the system administrator interacts with people in many IT and business fields, general skills (interpersonal skills) are as necessary as technical skills. When IT services slow down entirely, a system administrator must be able to work under pressure, read the situation as it develops and quickly decide on a response that works best for everyone.
What does a System Administrator do?
A system administrator is answerable for the configuration, maintenance, and consistent operation of a business's network and computer systems. In addition to identifying and solving any network problem, they also update the equipment and software to ensure they are up to date. They can work in office environments for small or large companies or in government organizations. Some of the specific tasks that system administrators may have include:
• Provide technical support for software and hardware problems that users encounter
• Be able to the configuration and operation of computer operating systems.
• Monitor the system daily and respond immediately in case of security or usability problems.
• Update systems and processes as necessary to improve the functionality and resolution of security problems
• Installation and testing of computer equipment and review of application records.
• Respond and resolve help desk requests and create and verify data backups
Average salary
Salaries vary according to geographic location, work history and level of experience.
·         Typical salary in the US: $83,620 per year
·         Some wages range between $23,000 and $182,000 per year

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