What is a WLAN

What is a wireless LAN? We live in a period when technological progress is at its highest. In particular, there is a crucial element of network transmission in the technological world. There are two main kinds of network transmission, which include wired communication and wireless network transmission.
In this context, it can be comprehended that wireless LAN designates local transmission through the Internet, the communication existence through radio waves. In particular, the distribution takes place via radio waves which have an access point on the Internet.
Remarkably, there is a critical element of network communication in the world of technology. They are wired and connected in a wireless network. To simplify the previous question on "What is WiFi?" (Wireless local area networks) WLAN doesn't want a wired Ethernet link.
Types of WLANs
What is the access method used by Wireless LAN? According to IEEE 802.11, WLANs work in two basic modes: infrastructure and ad hoc mode.
Infrastructure mode - Mobile devices or clients establish a connection to an access point (AP), which in turn connects to the LAN or the Internet via a bridge. The client transfers frames to other clients via the AP.
Ad hoc mode - customers transfer frames directly from peer to peer.
Advantages of WLAN
Flexibility: in radio coverage, nodes can communicate without other restrictions. Radio waves can penetrate walls, transmitters, and receivers can be located anywhere (not visible, for example, on devices, fences, etc.).
Planning: only ad hoc wireless networks allow communication without prior planning. Each cable network requires wiring plans.
Design: wireless networks allow the design of small independent devices that can keep in a pocket, for example. Cables restrict not only users but also designers of small laptops, PDAs, etc.
Robustness: wireless networks can cope with disasters such as earthquakes, floods, etc.
Cost: The cost of installing and continuing a WLAN is, on average, lower than the price of establishing and maintaining a traditional wired LAN for two reasons. First, adding additional users to a network does not add any cost once the first user has obtained wireless access to the wireless network through an access point. Second, the wireless LAN eliminates direct wiring and labor costs for installation and repair.
Ease of use: the wireless LAN is easy to use, and users need very little new information to take advantage of WLANs.
Disadvantages of WLANs
Quality of service: The quality of WLAN is commonly lower than that of wired networks. The leading causes for this are the lower bandwidth due to radio transmission limitations, higher error rates due to interloping, and higher interruption fluctuations due to error correction and detection tools extended.
Proprietary solutions: Due to the slow normalization process, many corporations have developed proprietary solutions that offer standardization and many innovative functions. Most components today comply with basic IEEE 802.11a or 802.11b standards.
Restrictions: Multiple governments and non-governmental institutions around the world regulate operations and limit frequencies to minimize interference.
Worldwide use: WLAN products sold in all countries, so national and international frequency regulations must observe.
Low energy consumption: Devices that communicate over a wireless local area network regularly consume energy as well as wireless devices that run on batteries. The LAN design must take this into account and implement unique energy-saving modes and energy management functions.
Operation without a license: LAN operators do not want to request a special permit to use the product. The device must operate in an unlicensed band such as the 2.4 GHz ISM band.
Robust transmission technology: If the WLAN uses radio transmission, many other electrical devices can interfere with it (e.g., vacuum cleaners, traction motors, hairdryers, etc.). Surroundings.
Also Read: Hub Switch Router Firewall
LAN and Wi-Fi
One of the most usual methods of creating a WLAN today is using Wi-Fi. It refers to a set of standards that relate to the collection of rules for electrical and electronic engineers that start with the number 802.11. Different Wi-Fi standards can be identified by their 802.11 standard amount, such as B. 802.11b or 802.11g, or by other more verbose names such as Wi-Fi 6 or Wireless G.
In-home and work Wi-Fi networks, devices called access points typically look for connections from nearby computers. Often routers can efficiently route traffic over the local network and to and from the Internet. Routers often support multiple versions of the Wi-Fi standards so that they can help multiple generations of devices. However, when setting up a network, you need to make sure that all of your tools are compatible with it.
Most modern laptops and cell phones support Wi-Fi, and you can check the box on your device or its documentation to determine which versions of the standard it works with. You can purchase an external adapter if you need to communicate with another type of Wi-Fi network.

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Computer Network Architect: Job Role, Outlook, Skills, and Salary

Computer network architects design and create data communications networks, including local area networks (LAN), wide area networks (WAN), and intranets. These networks range from a small connection among two branches to a multinational series of universally distributed communication systems. Network architects must have a thorough understanding of an organization's business plan to design a network that helps the organization achieve its objectives.
Job Role
Computer network architects often do the following:
• Create a plan and design for a data communications network.
• Present the project to management and explain why it is best for the Association.
• Consider information security when designing a network
• Decide what hardware (for example, router or adapter) and what software (for example, network controller) are needed to support the network
• Determine how cables routed in the building and where other hardware should go
• Research new technologies to discover which ones are best for the organization in the future.
Computer network architects or network engineers also create models to predict future network requirements. They analyze current traffic and estimate how growth affects the network. They keep up to date with new hardware and software technologies and see how they can improve network performance. Network architects must also monitor security. When network vulnerabilities occur, they implement security patches or other countermeasures.
Architects often work with the Director of Technology (CTO) of their organization to predict where the organization desperately needs new networks.
They spend the maximum of their time planning these new networks. Some network architects work on-site and supervise the engineers and employees who create the networks designed by a network architect. Network architects often have experience and have 5 to 10 years of network management or other expertise in IT systems.
Job Outlook
It is expected that the employment of computer network architects will increase by 15 percent between 2012 and 2022, which is above the average of all occupations.
The demand for computer network architects will increase as companies continue to expand their use of wireless and mobile networks. Designing and creating these new networks, as well as upgrading existing systems, provides opportunities for computer network architects. The expansion of health information technology will also contribute to employment growth.
The initiation of cloud computing, which lets users access storage, software, and other computer services over the Web, should decrease the demand for computer network architects. Businesses no longer need to design and build internal networks. Companies that offer cloud services do so instead. However, because the cloud service architects can work in the system of more than one organization, these vendors do not have to employ as many architects as each organization for the same amount of work.
Personality and Interests
Computer network architect training is generally interested in building, thinking and organizing by the Dutch code framework. In the field of buildings of interest, the focus is on working with tools and machines as well as on producing or repairing practical things. The area of ​​interest for reflection shows a focus on research, investigation, and improvement of understanding of natural laws. The organizational focus area focuses on the use of information and processes to organize elements in orderly systems.
If you're not sure of having an interest in building, thinking, or organizing that could be suitable for a career as a computer network architect, you can take a career test to measure your interests.
Important Skills
Analytical skills: Computer network architects need to examine data networks and determine the needs and resources of the organization to connect systems better.
Anxious for details: Computer network architects create complete plans of the networks they create with precise information describing how the parts of the system work together.
Interpersonal skills: These workforces must be able to work with different types of workers to achieve their goals.
Leadership skills: Many computer network architects ask engineering teams to build the networks they design.
Organizational skills: Computer network architects working for large companies need to coordinate many types of communication networks and ensure that they work well together.
How to become a computer network architect?
Computer network architects generally must have at least a bachelor's degree in computer science, information systems or a related field, such as engineering. However, obtaining a university degree in a computer specialization is better because it gives students the practical skills they will need to do their job. Acquiring a master's degree in information systems is also useful because it provides candidates with specialized business skills valuable in the field.
Employers also want potential IT network architects to have 5 to 10 years of professional experience in information systems before considering them.
Salary
The average annual salary of computer network architects was $ 91,000 in May 2018. The average salary is the salary in which half of the workers in an occupation earned more than that amount, and the other half earned less. The lowest 10% earned less than $ 52,580, and the wealthiest 10% earned more than $ 141,590.

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Aruba Certified ClearPass Associate (ACCA): Are you ready to attempt the ACCA

Certification as an Aruba ClearPass Certified Associate certifies that you have a basic understanding of the ClearPass Policy Manager and ClearPass guest. This certification confirms that you can configure ClearPass as an authentication server for enterprise users and guests. It also reviews your basic knowledge of device profiles and posture controls.
What is Aruba Certified ClearPass Associate?
Aruba Certified ClearPass Associate v.6.5 certification is designed to validate a variety of ClearPass skills. Those who pass the certification must have basic knowledge of ClearPass Policy Manager and ClearPass Guest. The exam tests your understanding of ClearPass configuration as an authentication server for business users and guests.
It also ensures that you know the device profiles and posture checks. The associate certificate is an entry level certificate for network professionals with around six months of experience. Confirm the skills you need to advance your career as a networking professional.
Are you ready to attempt the ACCA (Aruba Certified ClearPass Associate) Certification Exam?
For better prospects in profitable IT, HP Aruba Certified ClearPass Associate Certification required as the Certified Professional gets more attention than others. However, if you want to pass the Aruba Certified ClearPass Associate Certification Exam, you need to prepare yourself thoroughly. It can make a significant change in your career. It can make a big difference in the way you start your job. There is no escape from practice, and you must use the recommended books. However, FieldEngineer.com will provide you with the idea of ​​the exam to prepare you for the Aruba Certified ClearPass Certification Exam.
ACCA v6.5 questions are entirely reliable, authentic, and regularly simplified to ensure the relevancy of the groundwork material. The question and answers are highly accurate and are remarkably similar to the real exam questions.
ACCA Certification
Certification as a Certified Aruba ClearPass Associate v6.5 certifies that you have a basic understanding of the ClearPass Policy Manager and ClearPass guest. This certification confirms that you can configure ClearPass as an authentication server for enterprise users and guests. Besides, your basic knowledge of device profiles and postural controls will be reviewed.
This certification confirms that you:
• Understand services, application policies, and profiles.
• Understand how Windows Active Directory integrates with and uses ClearPass
• You can know and configure ClearPass guests
• Understand and set-up posture and pattern
• You can comprehend and configure the integration of devices
Aruba's multi-level technical certification programs awarded to individuals with outstanding technical expertise in WLAN, switching, security, mobility, and networking. Engineers with the Aruba certificate could gain a wealth of technical knowledge to solve real-world wireless deployment problems and quickly become the preferred point of contact for enterprise network projects.
Aruba Certified Mobility Associate (ACMA)
An Aruba Certified Mobility Certified Technician or ACMA Certified Technician can use the V8 operating system architecture and functionality to design, configure, and configure an Aruba Base Wireless Network (WLAN). Candidates are advised to take the Aruba WLAN Implementation course before passing the ACMA exam. The Pearson VUE exam includes 57 multiple-choice questions that must answer in an hour and a quarter. The exam fee for the same would be $ 230.
Aruba Certified Switching Associate (ACSA)
An Aruba certified switching partner or an ACSA certified engineer has the skills to configure and manage open source (SMB) solutions and industry-leading small business solutions. Before taking the certification exam, you should complete the Aruba Switching Fundamentals for Mobility course. The Pearson VUE exam consists of 60 multiple-choice questions that must answer in one hour and fifty-five minutes. The exam fee for it would be $ 230.
Aruba Certified Clearpass Professional (ACCP)
Aruba Certified Clearpass Professional Certification (ACCP) allows the engineer to administer ClearPass competently. It includes configuring ClearPass as an AAA server, integrating with external servers, and configuring the Policy Manager, Guest, Onguard, and Onboard feature sets.
Candidates are mentioned to complete the ClearPass Certification course before taking the certification exam. The Pearson VUE exam consists of 75 multiple-choice questions that must answer in 90 minutes. The exam fee is $ 230.
Aruba Mobility Certified Professional (ACMP)
With Aruba Certified Mobility Professional or an ACMP certified engineer, you can implement, configure, and manage Aruba's advanced enterprise WLAN (wireless LAN) solutions. Candidates are recommended to take the SWAL (Scalable WLAN Design and Implementation) course before taking the ACMP exam. ACMA is a prerequisite for this certification. The Pearson VUE exam includes 66 multiple-choice questions that must answer in 90 minutes. The exam fee for it would be $ 230.
Conditions
Typical candidates for this certification are network IT professionals with at least six months of experience implementing network solutions for the business. Get this certification for:
Position yourself as a vital team member who can help you design and implement the authentication and policy implementation of the ClearPass product line.
Boost your career as a Certified Professional in Aruba networks, including the basics of setting up Mobile First Networks with ClearPass.

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What does a telecommunications engineer do

Telecommunications engineers are in high demand due to access to wireless communications and the expectation of instant communication worldwide. In addition, market does not stop globally. We also need to communicate with objects and astronauts in space. Advances in communication technology are made by telecommunications engineers who keep up with the latest advances and continually improve the methods we use to communicate.

How to become a telecommunications engineering expert
To become a telecommunications engineer, you will probably need a bachelor's degree in engineering to put your foot in the door. There are many engineering programs out there, and some colleges offer electrical engineering, while others focus on communications or telecommunications. Who would benefit from becoming a telecommunications engineer?
According to O * NET OnLine, most telecommunications engineering specialists hold a bachelor's degree and 26% own a certification and 17% an associate's degree. Respondents reported their career titles as a telecommunications systems designer, telecommunications consultant, and telecommunications engineer to name a few.

Job description of a telecommunications engineer
As a telecommunications engineer, you would analyze the communication needs of an enterprise and then work on designing or recommending the equipment needed to achieve this goal. You should also maintain and test your current communication equipment to make sure they are in working order and upgrade outdated equipment to improve communication.

Telecommunication engineers can supervise telecommunication installers and their work to ensure quality and also provide expert assistance as needed. If you are working for a client, telecommunications engineers may need to train the team of people who will maintain the equipment.
Video Transcript of Telecommunications Engineer Career
Adan Rodriguez-Arroyo, NASA Telecommunications Engineer: I basically design communication systems for spacecraft, ears and mouth of a spaceship. It allows the Earth station on Earth to send orders to the spacecraft for processing, and also, while the ships are orbiting the Earth, it collects all this good data to be sent back to Earth. One of Adam's projects is the Multiscale Magnetospheric Mission or MMS communication system.
Earnings: The average weekly wage for unsupervised <a href="https://www.fieldengineer.com/skills/what-is-a-telecom-engineer">telecommunications designer salary</a> was $ 1,038 in 2008, significantly above the average of $ 608 in the private sector. 
NASA wants to find out more about Earth's protective magnetic layer, also called the magnetosphere and sun. What I have in my fingers now is the real antenna. The transmitter and receiver are connected here; so if you need to send, send your signal here, it goes through this system and radiates through space and any station is on the ground, it picks up that frequency and you can really get all the information you want.

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What is Network Security? Definition and Methods

Network security is a wide-ranging term that encompasses a variety of technologies, devices and processes. In the simplest case, it is a set of instructions and configurations considered to protect the integrity, privacy and accessibility of computer networks and data using software and hardware technologies. Regardless of size, industry or infrastructure, each company needs a certain degree of network security to protect it from the growing threats of the Internet.
The current network architecture is complex and faces a constantly changing threat environment, and attackers always try to find and exploit vulnerabilities. These vulnerabilities can occur in a variety of areas, including devices, data, applications, users and sites. As a result, today many network security tools and applications are used to address individual threats and exploits, as well as regulatory violations. If only a few minutes of inactivity can cause powerful disruptions and massive damage to a company's balance sheet and reputation, it is vital that these protective measures are taken.
Network Security Methods
To fully implement this type of defense, there are a variety of specialized techniques and types of network security that you want to perform. Cisco, a network infrastructure company, uses the following scheme to break down the different types of network security engineer jobs in USA. Although part of it based on product categories, it is a useful way to think about the different ways to protect a network.
·         Access Control: You must be able to block unauthorized users and devices from accessing your network. Users who have access to the network should be able to work only with the limited resources for which they have been authorized.
·         Anti-Malware: Viruses, worms, and Trojans by definition try to spread across a network and may be inactive for days or weeks on infected computers. Your security measures should do everything to prevent the first infection and to eliminate malware that reaches your network.
·         Application security: Insecure applications are often the vectors used by attackers to access their network. You must use hardware, software and security processes to block these applications.
·         Behavior analysis: You must know what normal network behavior looks like to detect security anomalies or vulnerabilities immediately.
·         Data loss prevention: People are inevitably the weakest security link. They must implement technologies and processes to ensure that employees do not intentionally or accidentally send confidential data outside the network.
·         Email security: Phishing is one of the top common ways for attackers to access a network. Email security tools can block incoming and outgoing confidential information.
·         Firewall: Perhaps the ancestors of network security, follow the rules established to allow or deny traffic on the border among your network and the Internet, creating a barrier between your area of ​​trust and the wild west outdoors. They do not exclude the need for a deep defense strategy, but they remain a necessity.
·         Mobile device and wireless device security: Wireless devices have all the potential security vulnerabilities of another networked device, but can connect to a wireless network in almost every other location, requiring additional verification.
·         Network Segmentation: Software-defined segmentation divides network traffic into different classifications and facilitates the application of security policies.
·         Security and Event Management (SIEM) information: These products are designed to automatically gather information from a selection of network tools to offer the data you need to detect and respond to threats.
·         VPN: A tool (typically based on IPsec or SSL) that authenticates communication between a device and a secure network and creates a secure and encrypted "tunnel" over the open Internet.
·         Web security: You need to be able to control the Internet usage of internal employees to prevent web-based threats from using browsers as a source of infection for your network.
Network Consultant
Network Services Job Description
Network consultants create and maintain network infrastructure and create and maintain secure servers. Although they work internally in several business areas, travel is also common since network consultants are on-site to work on servers and computer systems. Network Consultant jobs are available for full-time and part-time Monday through Friday. However, occasional work during the night and on the weekends may be required to resolve server problems within a limited period. Network consultants often work independently and inform the clients who hire them and the managers who direct them to different locations.
Tasks and responsibilities: Network Consultant.
Network consultants find work in companies with large computer networks, as well as in security companies and computer companies that provide services to other companies. In any business, network consultants must perform the following main tasks:
·         Create and manage domains online
Network consultants create Internet domains and ensure that they continue working. Add additional servers and software as necessary to succeed in online traffic flow.
·         Test protocols and network applications
Network consultants test all protocols and applications used by computers connected to the server to ensure seamless functionality and data security.
·         Solve individual problems
Network consultants solve personal PC problems and application software and train staff in basic computer functions and security protocols using system servers.
·         Create backup programs
Network consultants write programs to back up and restore server data to protect them from losses, viruses, and other problems.
·         Data flow test
Network consultants test the flow of data between routers and modems to ensure there are no system delays or strong communication between the computers and the server network.
·         Write scripts
Network consultants familiar with multiple computer languages ​​write scripts in Java, Python, Perk, and other programming languages.
·         Install and update software
Network consultants keep computer systems up to date by installing new software and updating existing software as it becomes available.

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Apple Certified Technical Coordinator (ACTC): The Value of Apple Certification

The Apple Certified Technical Coordinator program identifies people who are familiar with Mac OS X support and have a basic knowledge of Mac OS X Server. ACTC certification can be of great help when looking for jobs that involve basic networking tasks. Although previous certifications focus on technical support tasks, they focus more on network and server capabilities. If you are looking for a career focused on the Mac OS X server, this certification is almost essential. This certification shows that you can perform the most common network work functions for Mac. This certification is not only suitable for creating resumes, but also for consultants working with the Mac platform since they have a high level of understanding of Mac network concepts.
The ACTC certification requires passing the Mac OS X Support Essentials exam and the Mac OS X Server Essentials exam. As mentioned earlier, obtaining this certification also includes certification from Apple's Certified Help Desk Specialist.
The value of Apple Certification
Apple certification is something that many do not even know exists. One reason for this is that Macs are not as popular in the corporate world as Microsoft Windows. However, it has a specific niche in the business. Creative organizations, such as advertising agencies and the media, such as newspapers, magazines, and video production sites, generally rely much more on Macs than other companies. Also, several school districts across the country are Mac-based. And most large companies sell Macs, especially corporate and video art.
For this reason, it may be useful to obtain an Apple-certified Mac Technician. Although it is not as numerous as Microsoft-certified people, Mac-certified experts benefit from the correct configuration.
Application Certifications
There are two certification paths for Apple: application-oriented and problem-solving/ solution-oriented. Apple Certified Pros have experience with specific programs, such as the Final Cut Studio video editing package or DVD Studio Pro DVD authoring software.
For specific applications, for example. For example, Logic Studio and Final Cut Studio have different levels of training, including Master Pro and Master Trainer credentials. It can be useful when working alone and editing videos, for example, by contract.
If you like teaching, consider becoming a certified Apple Coach. The main advantage of such certification would be for coaches and coaches who work with students learning the programs.
Technology Certifications
Apple also offers some titles for more "geeks." If you like computer networks and dive into the gut of an operating system, this is the place for you.
There are three Mac OS X certifications, including:
1.       Apple Certified Support Professional (ACSP): It is an initial entitlement for support staff members who comply with the MCP. It covers the Mac OS X client, not the Mac OS X server.
2.       Apple Certified Technical Coordinator (ACTC): The next level provides support for Mac OS X Server and intended for necessary system administrators who work in smaller networks.
3.       Apple Certified System Administrator (ACSA): It intended for high-end Mac system administrators who work in complex and often large environments. You should have a few years of experience working and managing Mac networks before you can try it.
Apple has credentials for hardware and storage consultants. The Apple storage device is called Xsan and offers two titles for experts in the field: Xsan Administrator and Apple Certified Media Manager (ACMA). The ACMA is more technical than the Xsan administrator and includes memory architecture and network tasks.
On the hardware side, consider becoming an Apple Certified Macintosh Technician Certification (ACMT). ACMT spends much of its time separating and rebuilding desktops, laptops, and servers. It's Apple's version of CompTIA A + credentials.
It is Well, Worth the money?
Given a large number of Apple Field Engineer certifications available, the question is whether it is worth spending time and money since companies use much fewer Macs than PCs. An Apple fan blog asked this question and received some interesting answers.
"The certifications are beneficial and are considered accreditations recognized by the industry. I am pretty sure that Apple's accreditation on my resume helped me find my current job," said a certified Apple professional.
Another compared Apple's certifications with those of Microsoft: "As for Apple and Microsoft ... MCSE is a dozen. Every Apple certificate is rare, and if it has both (like me), it is very marketable and valuable for customers The shortage is the key to being precious, and my business has exploded in the last 18 months due to Apple and our demand for duplicate certificates. "
A multi-certified Mac expert said: "Certifications help show potential customers (and even potential employers) who know Mac."
Besides, this article in the Certification Magazine explains how a university is beginning to find Apple-certified students looking for work, also thanks to the qualification.
Given these answers, it can say with certainty that Apple's certification in the right situation is precious.

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