Run Your Applications Locally, Over Your Organization's Network, or Anywhere in the World

Applications are easy to use and with COMSOL Server™, they are easy to access, deploy, and share, too. You can install the COMSOL Server™ software anywhere you would like. Typically, COMSOL Server™ is installed on a server or cluster within your organization's network, but it can also be installed for offline or personal use on a laptop or desktop computer 

Aruba Certified Design Expert

Applications are run through any popular web browser, such as the Google Chrome™, Firefox®, Internet Explorer®, Microsoft Edge®, or Safari® browsers. You do not need any plugins to run an application, yet you get immediate access to interactive 1D, 2D, and 3D graphics. On native Windows® operating systems, you can also run applications from an installed thin desktop client, COMSOL Client for Windows®, which can be downloaded for free from the Product Download page. If your application was built using components from one of the LiveLink™ products for CAD and it requires a connection to the third-party CAD program, then you need the desktop client.

While the Application Builder requires the Windows® version of COMSOL Multiphysics® to build applications, COMSOL Server™ is more flexible. You can run applications on Windows®, Linux®, and macOS platforms, as well as any operating system that supports most web browsers.

A simulation app created with the Application Builder is running in a browser.

Administrate and Run Your Applications with Ease

As the administrator, you have complete control over your organization's applications, including who can access and run them, via the web interface in COMSOL Server™. The main dashboard presents available applications in a straightforward Application Library format. From here, it is easy to launch applications and control their permissions within your organization.

Different menu items on the dashboard lead you to interfaces for monitoring your CPU and memory usage and controlling your sessions that are running applications. If COMSOL Server™ has been installed on several computers, the primary server's web interface gives you an overview of all user sessions across all secondary servers.

You can create and control user accounts and user groups, either on the fly or by linking to preexisting user databases on your network based on either Active Directory by Microsoft® or LDAP. From the level of an administrator or power user, you can also set permissions for user groups and grant Application Library access to users so that they can upload and edit applications. Other tools allow you to control where applications can be run using multiple cores or clusters, or restricted to a one-application-per-core basis.

Want to customize the web interface and your applications to match your organization's branding? Easy-to-use tools enable you to make the Application Library in COMSOL Server™, the applications that you run, and the web interface all your own.

The role of fiber optic cables in computer networks

A fiber optic cable is a network cable that contains fiberglass wires in an insulated housing. They are designed for high-speed, high-performance data networks and telecommunications.

Compared to wired cables, fiber optic cables offer higher bandwidth and can transmit data over longer distances.

Fiber optic cables support much of the world's Internet, cable, and telephone systems.

How Does Dark Fiber Work

Fiber optic cables carry communication signals using light pulses generated by small lasers or light emitting diodes (LEDs).

The cable consists of one or more strands of glass, each being only slightly thicker than a strand of human hair. The center of each strand is called the core, which provides the path for light to travel. The core is surrounded by a layer of glass called plating that reflects light inward to avoid signal loss and allows light to pass through the bends in the cable.

The two main types of fiber cables are called single-mode and multi-mode fibers . Single-mode fiber uses very thin glass wires and a laser to generate light, while multi-mode fibers use LEDs.

Single-mode fiber optic networks often use Wave Division (WDM) multiplication techniques to increase the amount of data traffic that can be transmitted over the wire. WDM allows light at several different wavelengths to be combined (multiplexed) and subsequently separated (de-multiplexed), effectively transmitting multiple communication streams through a single light pulse.

The advantages of fiber optic cables

Fiber cables offer more advantages than traditional long-distance copper cables.

Fiber optics has a higher capacity. The amount of network bandwidth that a fiber cable can carry easily exceeds that of a copper cable of similar thickness. 10 Gbps, 40 Gbps and even 100 Gbps fiber optic cables are standard.

Because light can travel much longer on a fiber cable without losing power, it reduces the need for signal amplifiers.

Fibers are less susceptible to interference. A traditional network cable requires special shielding to protect it from electromagnetic interference. While this shielding helps, it is not enough to prevent interference when many cables are tied together in close proximity to each other. The physical properties of glass and fiber cables avoid most of these problems.

Fiber to Home (FTTH), other implementations and fiber optic networks

While most fibers are installed to support long-distance connections between cities and countries, some residential ISPs have invested in expanding their fiber facilities in suburban neighborhoods for direct household access. Suppliers and industry professionals call these facilities "last mile".

Some of the most popular FTTH services on the market today include Verizon FIOS and Google Fiber. These services can provide gigabit internet speeds (1 Gbps) to every household. However, although suppliers also offer lower costs, they usually also offer their customers smaller capacity packages.

FTTP (Fiber to the Premises): Fiber to the building.

FTTB (Fiber to Building / Business / Block): Same as FTTP.

FTTC / N (Fiber at the edge of the knot): Fiber that is knotted, but then copper wires complete the connection inside the building.

Direct fibers: Fiber that comes out of the central office and is attached directly to a single customer. It offers the highest bandwidth, but is more expensive.

Shared record: similar to direct fiber, except that the fiber approaches the premises of nearby customers, is divided into other fibers for those users.

F5 Certified Solutions Expert (F5-CSE)

An F5 Certified Solutions Specialist works with clients to define security and technical requirements for the business, and then translates those requirements into solutions. Applicants must have solution design experience that covers all relevant aspects of LTM, DNS, ASM, and APM, as well as other F5 technologies such as BIG-IQ, MobileSafe, IP Intelligence (IPI) and WebSafe modules.

To qualify for F5-CSE status, applicants must have obtained all previously mentioned F5 certifications, including F5-CA, F5-CTS LTM, F5-CTS BIG-IP DNS, F5-CTS ASM, and F5-CTS APM. Once these prerequisites are met, candidates must pass another exam: What is f5

Exam 401 - F5 Certified Security Solutions Expert

Employment Opportunities and Training Resources

Since F5 focuses on large networking environments, you can expect to find F5-related positions such as Network Specialist, Network Engineer, Systems Engineer, Network Administrator, Architect, and Consultant. A snapshot of job boards like SimplyHired, Indeed, and LinkedIn shows 2,000 to 3,000 US job openings for F5 certified professionals (depending on the job board) with excellent salary potential.

In fact, the salaries at F5 Networks are pretty good too. According to SimplyHired, the salary for a software engineer is about $ 116,000. Glassdoor reports salary of $ 122,000 for a network engineer and $ 160,000 for an F5 presales engineer.

F5 Education and third parties offer instructor-led classroom instruction as well as real-time online courses to prepare students for F5 certification. For a list of F5 educational courses and their descriptions, see the Courses and Classes page, and typical prices range from $ 1,000 for a one-day course to $ 4,000 for a four-day course.

Applicants can also take free start-up courses at F5 University. These self-paced web-based tutorials are 45 minutes each and introduce students to the features and capabilities of F5 solutions, basic BIG-IP administration and configuration, and application delivery customization.

F5 offers both an exam plan and a free study guide for each certification exam. Just go to the page for the exam you want and find the links "outline" and "study guide". Each guide is quite detailed and will help you focus on the topics that are most important for taking the exam.

For a long list of F5 study guides and test kits, go to Amazon.com and search for “F5 Networks”. Here are some examples of what you will find:

F5 Networks, Philip Jonsson (Author) and Stephen Eveson (Author), lulu.com, 2015; $ 69,27

F5 Networks Application Delivery Fundamentals Tutorial, Philippe Jonsson, lulu.com, 2015; $ 42, 49

F5 Networks Application Delivery Basics Tutorial, by Philippe Jonsson and Stephen Ivson, lulu.com, 2015; $ 42, 49

Introduction to F5 Networks, BIG-IP, TMOS and LTM v11, Volume One, Stephen Eveson, 2013, Kindle Edition; $ 9.99

LINUX SYSTEM ADMINISTRATOR (OPERATIONS)

We are waiting for our friendly team of young, motivated and energetic people who want to get serious experience to start a career linux jobs. 

DUTIES: 

Deployment, configuration and administration of servers running Linux. Monitoring the operation of the software and hardware of the servers and promptly solving emerging problems, processing applications. Development and updating of operational documentation. 

REQUIREMENTS: Work experience from 1 year (Applicants without experience are considered, with a good theoretical base of Linux and a desire to work with it). Understanding the basic principles of Linux administration. Understanding of the principles of operation and administration of typical Internet services: web (apache, nginx), mail (exim, dovecot), DNS, etc. Skills of writing simple scripts, one-liners. Knowledge of network protocols and basic principles of networks functioning. Ability to read and write documentation. 

WELCOMED: Experience with loaded services. Experience with monitoring systems (Icinga, Zabbix). Ability to understand the code in one of the languages ​​- Bash, Python, Perl, PHP. Experience in administering a MySQL database, writing SQL queries. Experience with virtualization systems (Hyper-V, KVM, Xen). Experience with Windows-based services. Technical English. 

CONDITIONS: Salary based on the results of the interview, depending on qualifications, from 40,000 rubles Interesting work in a stable IT company (20 years on the market). Registration under the Labor Code of the Russian Federation (stably paid "white" wages, paid sick leave and annual leave, probation period 3 months). The work schedule is 5/2 with a lunch break of 1 hour. Opportunity for professional, financial and career growth and development. Comfortable workplace in a modern spacious office-loft class "A" within walking distance (5 minutes) from the station. m. Kozhukhovskaya. Convenient and cozy kitchen with a seating area. Friendly young team of like-minded people. Подробнее: https://masterhost.ru/about/vacancy/linux-admin/

Implementation and administration of Cisco v1.0 solutions

The Cisco Solutions Implementation and Administration (CCNA) v1.0 course will give you a wide range of fundamental knowledge for your entire IT career. Through a combination of lectures, hands-on, and self-study, you will be able to learn how to roll out, configure, and diagnose IPv4 and IPv6 core networks. Manage network devices and identify top security threats. The course covers configuring network components such as switches, routers, and wireless LAN controllers. The course also gives you the basics of automation, programming, and software-defined networking.

Purpose of the course and acquired skills

This course will help you: ccna wireless salary

Gain knowledge and skills in the installation, configuration and operation of small and medium-sized networks

Get a basic knowledge of the basics of networking, security and automation

Prepare for the 200-301 CCNA exam

The audience

This course is for anyone looking to obtain a CCNA certification. The course also provides basic knowledge for all support professionals involved in the basic installation, operation, and validation of Cisco networks.

The course is most suitable for specialists:

Entry Level Network Engineer

Network administrator

Network Support Specialist

Technical Support Officer

Certification programs

The 200-301 CCNA exam validates your knowledge and skills in networking fundamentals, network access, IP connectivity, IP services, security fundamentals, and network automation and programmability.

After successfully passing the 200-301 CCNA exam, you will receive your CCNA certification.

Necessary preparation

To successfully understand the materials of this course, the student must have the following knowledge and skills:

Basic computer literacy

Basic skills of working with the PC operating system

Basic Internet Skills

Basic knowledge of IP addresses

There are no formal prerequisites for CCNA certification, but you should make sure you have a good understanding of the exam topics.

General course content

After completing this course, you will be able to:

Identify the components of computer networks and describe their main characteristics

Understand the networking model

Describe the features and functions of the gateway software

Cisco Systems (IOS®)

Describe LANs and the role of switches in LANs

Describe Ethernet networking technology and switch operation

Install the switch and perform its initial configuration

Describe the network layer of the TCP / IP stack, IPv4, its addressing scheme and subnets

Describe the transport and application layers of TCP / IP

Explore routing features

Implement a basic configuration on a Cisco router

Explain communication between hosts through switches and routers

Identify and fix common switched network problems and common problems associated with

Ipv4 addressing

Describe the basic functions and addresses of Ipv6, and configure and test the basic

Ipv6 connectivity

Describe the operation, benefits, and limitations of static routing

Describe, implement and test virtual local area networks (VLANs) and trunks

Describe the application and configuration of inter-VLAN routing

Explain the basics of dynamic routing protocols and describe the components and operation

Where did fiber optics come from?

In the late 1960s in the UK, Dr. Charles Kuen-Kao and his colleague were instrumental in determining that fiber optic cables of that era were unusable due to impurities in their glass. These early fiber optic cables only carried telephone and television signals through pulses of light for about 20 meters before almost all of the light was scattered. But by 1970, communications researchers had created ultrapure optical fiber more than 800 meters long.

Fiber optics, resembling fishing line, later enabled broadband communications, biomedical informatics, and a host of other digital applications. By 2009, when Dr. Kao received the Nobel Prize in Physics, it was estimated that the number of fiber optic cables in use around the world was over 600 million miles of fiber optic installation.

By 2019, fiber optic cables exist for almost any task and environment. For example, DEPS fiber optic cable is available in various versions for buried , sewer, suspended between poles.

How does fiber optics work?

Fiber optics send encoded information through a beam of light down a glass or plastic pipe. In the 1960s, engineers used it to transmit phone calls at the speed of light.

Each cable contains incredibly thin strands of glass or plastic: optical fibers. Each cable can have two or several hundred conductors. The strands, each one-tenth the width of a human hair, are capable of carrying about 25,000 phone calls each. Thus, a cable consisting of hundreds of strands is capable of carrying millions of calls.

Light reflects off the walls of the cable tube. Each photon bounces down the pipe like a bobsled on an icy track. Although you can expect light to seep through the edges of the glass tube, it is directed at small angles (no more than 42 degrees) that reflect it back into the tube. This is known as total internal reflection.

The cable also keeps light in the tube. The core of the cable is a strand of glass or plastic through which light passes. A second layer, called a shell, is wrapped around the outside of the core. The sheath holds the light signals inside the core.

Provide Care Without Boundaries with Cisco HyperFlex Rapid Deploy Bundles for Healthcare

With pre-configured and fully validated Cisco HyperFlex VDI Rapid Deploy bundles, you can give your front-line healthcare workers immediate, secure access to their desktops and the healthcare applications they need to deliver cutting-edge care, anywhere data center ccie.

Cisco 500-seat HyperFlex VDI Rapid Deploy bundle

3 Cisco HyperFlex AHXF220c-M5SX All-Flash Nodes

1 Cisco HyperFlex HX-C220c-M5SX Compute-only Nodes

A pair of 4th-gen FIs

Cisco 1000-seat HyperFlex VDI Rapid Deploy bundle

4 Cisco HyperFlex HXAF240c-M5SX All-Flash Nodes

4 Cisco HyperFlex HX-C240c-M5SX Compute-only nodes

A pair of 4th-gen FIs

Cisco IT Vendor Assistance Program for Epic Hyperspace, 1000-seat HyperFlex VDI bundle

5 HyperFlex HXAF220c-M5SX (2xXeon 8168, 576GB RAM, VIC 1387, M.2)

2 UCS 6332-16UP Fabric Interconnects and 2 Uplink, 5 QSFP 40Gb cables

1 Year HXDP Enterprise and Smartnet Support

Supports up to 214 Epic Feb 2020 Hyperspace sessions per host

All bundles come with 180-day free trial of our Cisco Intersight Essentials edition.

Pre-configured expansion nodes are also available for existing HyperFlex environments.