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Из этого курса вы получите всю необходимую информацию о компьютерных сетях. Мы познакомимся с принципами работы современных сетевых технологий и протоколов, изучим облачные сервисы и научимся устранять неполадки в сетях. Ещё вы узнаете, как использовать эти знания на собеседовании, а также при диагностике сбоев в реальном времени.

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Из этого курса вы получите всю необходимую информацию о компьютерных сетях. Мы познакомимся с принципами работы современных сетевых технологий и протоколов, изучим облачные сервисы и научимся устранять неполадки в сетях. Ещё вы узнаете, как использовать эти знания на собеседовании, а также при диагностике сбоев в реальном времени.

К концу этого курса вы:

● Сможете описать компьютерные сети в контексте пятиуровневой модели.

● Будете знать все стандартные протоколы, отвечающие за TCP/IP-взаимодействия.

● Овладеете эффективными инструментами и технологиями для устранения сетевых неполадок.

● Познакомитесь с сетевыми службами, которые обеспечивают работу компьютерных сетей, например DNS и DHCP.

● Изучите концепцию "всё как услуга", а также получите понятие об облачных вычислениях и облачном хранилище.

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What's inside

Syllabus

Общие сведения о компьютерных сетях
Добро пожаловать! "Основы компьютерных сетей" – второй курс программы сертификации для специалистов IT-поддержки. В рамках первой недели вы получите общее представление об организации сетей. Мы изучим сетевые модели TCP/IP и OSI, а также посмотрим, как их уровни взаимодействуют друг с другом. Вы познакомитесь с основными сетевыми устройствами: кабелями, хабами, коммутаторами, маршрутизаторами, серверами и клиентами. Мы также поговорим о физическом и канальном уровнях нашей сетевой модели более подробно. К концу этого модуля вы будете представлять себе, как разные уровни модели вместе образуют сеть.
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СЕТЕВОЙ УРОВЕНЬ
В рамках второй недели мы более подробно рассмотрим сетевой уровень. Вы познакомитесь с IP-адресацией и организацией подсетей. Мы узнаем, как выполняется инкапсуляция и как различные протоколы, например ARP, позволяют уровням сети взаимодействовать друг с другом. Мы рассмотрим маршрутизацию, ее протоколы, а также принципы работы интернета. К концу этого модуля вы сможете объяснить схему IP-адресации и процесс организации подсетей, научитесь выполнять двоичные вычисления для описания подсетей и будете понимать, как работает интернет.
Транспортный и прикладной уровни
В рамках третьей недели мы более подробно рассмотрим транспортный и прикладной уровни. К концу этого модуля вы сможете описать порты и сокеты TCP, назвать компоненты заголовка TCP, объяснить, чем отличаются протоколы с установлением соединения от протоколов без установления соединения, и рассказать, как TCP обеспечивает целостность данных.
Сетевые службы
Четвертая неделя курса посвящена сетевым службам. Мы узнаем, зачем нужна система DNS и как она работает. Ещё мы поговорим о том, как протокол DHCP упрощает администрирование сетей. К концу этого модуля вы сможете описать принципы работы DNS и DHCP, рассказать, как технологии NAT повышают безопасность сетей, а VPN и прокси-службы помогают пользователям подключаться к сети и защищают их.
Подключение к интернету
На пятой неделе курса мы изучим историю интернета: проследим его эволюцию и посмотрим, что он собой представляет сегодня. Мы разберем различные способы подключения к интернету с помощью кабелей, беспроводных и сотовых соединений, а также волоконной связи. К концу этого модуля вы сможете назвать компоненты глобальных сетей, а также описать беспроводные и сотовые подключения.
Устранение неполадок и будущее компьютерных сетей
Поздравляем! Вы дошли до последней недели курса! Здесь мы поговорим о будущем компьютерных сетей, а также посмотрим, как именно устранять сетевые неполадки в основных операционных системах. К концу этого модуля вы сможете обнаружить и исправить самые частые проблемы с подключением к сети, используя специальные инструменты в Microsoft Windows, macOS и Linux.

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Углубит базовые знания компьютерных сетей для начинающих специалистов
Предоставляет реальные примеры сетей и сетевых инструментов, что даёт возможность легче понять материал
Изучает сетевые технологии, которые активно используются в реальном мире
Подходит для действующих специалистов, которые хотят систематизировать знания в области сетей
Подойдет для подготовки к собеседованию в области ИТ
Предложенный курс является частью программы сертификации для специалистов ИТ-поддержки

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Reviews summary

In-depth introduction to computer networking

This course provides a comprehensive introduction to computer networking, covering the fundamentals of network technologies and protocols, cloud services, and troubleshooting techniques. Students highly recommend this course for its clear explanations, engaging format, and practical relevance.
Interactive and engaging
"The course is very engaging and interactive."
Well-explained concepts
"The course materials are very well-explained and easy to understand."
Real-world applications
"I found the course to be very practical and relevant to my work."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Основы компьютерных сетей with these activities:
Organize and review course materials regularly
Organize your class notes and materials for effective studying and long-term retention.
Browse courses on Note-Taking
Show steps
  • Attend all lectures and take comprehensive notes.
  • Review your notes regularly and summarize key concepts.
  • Organize your notes and materials using a system that works for you, such as digital folders or a physical notebook.
Review electrical engineering fundamentals
Electrical engineering fundamentals are essential for this course, go over basic concepts now.
Browse courses on Ohm's Law
Show steps
  • Review basic electrical concepts such as voltage, current, and resistance.
  • Practice solving simple electrical circuits using Ohm's Law and Kirchhoff's Laws.
Form a study group with classmates
Collaborative learning improves understanding and retention of concepts.
Show steps
  • Identify classmates who are interested in forming a study group.
  • Establish regular meeting times and a study plan.
  • Work together to review course materials, discuss concepts, and complete assignments.
Six other activities
Expand to see all activities and additional details
Show all nine activities
Configure a basic network using network simulation software
Network simulation helps solidify your grasp on networking concepts.
Browse courses on Network Simulation
Show steps
  • Design a basic network topology using a network simulation software.
  • Configure IP addresses, subnet masks, and default gateways for devices in the network.
  • Verify network connectivity using ping and traceroute commands.
Attend a workshop on advanced network security
Attending this workshop will expose you to advanced network security concepts and trends.
Browse courses on network security
Show steps
  • Identify and register for a workshop on advanced network security.
  • Attend the workshop and actively participate in discussions and exercises.
Participate in a network security competition
Participating in competitions challenges your skills.
Show steps
  • Identify and register for a network security competition.
  • Prepare for the competition by practicing your skills and studying relevant materials.
  • Participate in the competition and demonstrate your abilities.
Build a portfolio of network troubleshooting case studies
This extended project will allow you to apply troubleshooting skills and build a valuable portfolio piece.
Browse courses on Network Troubleshooting
Show steps
  • Identify common network issues and document the troubleshooting steps taken to resolve them.
  • Create a portfolio of case studies that demonstrate your troubleshooting skills and knowledge.
Contribute to open-source network security tools
Contribute to open-source projects and gain real-world experience.
Browse courses on Open Source
Show steps
  • Identify open-source network security tools that align with your interests.
  • Review the documentation and codebase.
  • Identify areas where you can contribute, such as bug fixes or feature enhancements.
Design and implement a network security plan for a small business
Creating a network security plan is a practical way to apply your knowledge and skills.
Show steps
  • Identify the security requirements and risks for a small business.
  • Design a network security plan that addresses the identified risks.
  • Implement the network security plan and monitor its effectiveness.

Career center

Learners who complete Основы компьютерных сетей will develop knowledge and skills that may be useful to these careers:
Computer Network Architect
A Computer Network Architect designs, builds, and maintains computer networks. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers network troubleshooting and maintenance, which are essential skills for a Computer Network Architect.
Network Administrator
A Network Administrator is responsible for the day-to-day operation and maintenance of a computer network. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers network troubleshooting and maintenance, which are essential skills for a Network Administrator.
Cloud Engineer
A Cloud Engineer designs, builds, and maintains cloud-based applications and services. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers cloud computing topics, which are essential for a Cloud Engineer.
Network Engineer
A Network Engineer designs, builds, and maintains computer networks. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers network troubleshooting and maintenance, which are essential skills for a Network Engineer.
Systems Administrator
A Systems Administrator is responsible for the day-to-day operation and maintenance of computer systems. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers system administration topics, which are essential for a Systems Administrator.
IT Support Specialist
An IT Support Specialist provides technical support to users of computer systems. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers IT support topics, which are essential for an IT Support Specialist.
Data Center Technician
A Data Center Technician maintains and repairs computer equipment in a data center. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers data center operations, which are essential for a Data Center Technician.
Network Security Analyst
A Network Security Analyst protects computer networks from unauthorized access and attacks. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers network security topics, which are essential for a Network Security Analyst.
Software Engineer
A Software Engineer designs, develops, and maintains software applications. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers software engineering topics, which are essential for a Software Engineer.
Database Administrator
A Database Administrator maintains and manages databases. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers database administration topics, which are essential for a Database Administrator.
Web Developer
A Web Developer designs, develops, and maintains websites. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers web development topics, which are essential for a Web Developer.
Business Analyst
A Business Analyst analyzes and designs business processes. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers business analysis topics, which are essential for a Business Analyst.
Information Security Analyst
An Information Security Analyst protects computer systems from unauthorized access and attacks. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers information security topics, which are essential for an Information Security Analyst.
Computer Systems Analyst
A Computer Systems Analyst analyzes and designs computer systems. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers computer systems analysis topics, which are essential for a Computer Systems Analyst.
Computer Programmer
A Computer Programmer writes and maintains computer programs. This course may be useful, as it provides a foundation in computer networking concepts, including network models, protocols, and technologies. The course also covers computer programming topics, which are essential for a Computer Programmer.

Reading list

We've selected six books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Основы компьютерных сетей.
This comprehensive guide to the TCP/IP protocol suite is an essential resource for anyone who wants to understand how the Internet works. It covers all the major protocols in detail, and it is an invaluable reference for network engineers and administrators.
Классический учебник по компьютерным сетям, который охватывает широкий спектр тем, от базовых концепций до современных технологий.
This comprehensive textbook provides a thorough foundation in computer networking, covering all the essential concepts from the physical layer to the application layer. It valuable resource for students and professionals alike, and it complements the course well by providing additional depth and breadth.
Provides a comprehensive overview of routing TCP/IP networks. It covers all the major routing protocols, and it is an excellent resource for network engineers and administrators.
This classic textbook must-read for anyone who wants to understand the fundamentals of computer networking. It covers all the core topics in a clear and concise manner, and it is an excellent resource for students and professionals alike.

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