أساسيات شبكات الكمبيوتر from Coursera

تم تصميم هذه الدورة لتقديم نظرة عامة كاملة عن شبكات الكمبيوتر. سوف نتناول كل شيء بدءًا من أساسيات تقنيات وبروتوكولات الشبكات الحديثة إلى نظرة عامة على تقنية السحابة الحاسوبية إلى التطبيقات العملية وكيفية استكشاف أخطاء الشبكة وإصلاحها.

مع حلول نهاية هذه الدورة، ستكون قد تمكنت من:

● وصف شبكات الكمبيوتر من حيث نموذج الطبقات الخمس

● فهم جميع البروتوكولات القياسية المتضمنة في اتصالات TCP/IP

● التمكن من استيعاب الأدوات والتقنيات الفعالة لاستكشاف أخطاء الشبكة وإصلاحها

● تعلم خدمات الشبكات، مثل DNS وDHCP التي تساعد في تشغيل شبكات الكمبيوتر

● فهم الحوسبة السحابية، وكل شيء يتم تقديمه كخدمة، والتخزين السحابي

What's inside

Syllabus

مقدمة إلى الشبكات

مرحبًا بكم في دورة الشبكات الخاصة بشهادة أخصائي دعم نظم المعلومات! في الأسبوع الأول من هذه الدورة، سنتناول أساسيات شبكات الكمبيوتر. ثم نتعرف على نماذج شبكات TCP/IP وOSI وكيف تعمل طبقات الشبكة جميعها معًا. كما سنتناول أيضًا أساسيات أجهزة الشبكات كالكابلات ولوحات الوصل (hub) والمبدلات والموجهات والخوادم وأجهزة العملاء. وسوف نستكشف بمزيد من التفصيل أيضًا الطبقة المادية وطبقة ارتباط البيانات في نموذج الشبكة الذي لدينا. في نهاية هذه الوحدة، ستكون تعرفت على كيفية تناغم جميع الطبقات المختلفة في نموذج الشبكة وعملها معًا لإنشاء شبكة واحدة.

طبقة الشبكة

في الأسبوع الثاني في هذه الدورة، سوف نستكشف طبقة الشبكة بمزيد من التفاصيل والتعمق. سوف نتعرف على نظام عنونة IP وكيف تعمل الشبكات الفرعية. سوف نستكشف كيف تعمل تقنية التغليف وكيف تسمح البروتوكولات ـ مثل ARP ـ لطبقات مختلفة من الشبكة بالتواصل بعضها مع بعض. سوف نتناول أيضًا أساسيات التوجيه وبروتوكولات التوجيه وكيف تعمل شبكة الإنترنت. مع حلول نهاية هذه الوحدة، ستكون قادرًا على وصف نظام عنونة IP، وفهم كيفية عمل الشبكات الفرعية، وإجراء العمليات الحسابية الثنائية لوصف الشبكات الفرعية، وفهم كيفية عمل شبكة الإنترنت.

طبقة النقل وطبقة التطبيق

في الأسبوع الثالث في هذه الدورة، سوف نستكشف طبقة النقل وطبقة التطبيق. بحلول نهاية هذه الوحدة، ستكون قادرًا على وصف منافذ TCP ومقابسه، وتحديد المكونات المختلفة لرأس TCP، وإظهار الفرق بين البروتوكولات المهيأة للاتصال والبروتوكولات غير المهيأة للاتصال، وشرح كيفية استخدام TCP لضمان تكامل البيانات.

خدمات الشبكات

في الأسبوع الرابع من هذه الدورة، سوف نستكشف خدمات الشبكات. سنتعرف على سبب حاجتنا إلى DNS وكيف يعمل. سوف نوضح لكم أيضًا لماذا جعل بروتوكول DHCP إدارة الشبكة مهمة أسهل. في نهاية هذه الوحدة، ستكون قادرًا على وصف كيفية عمل كل من DNS وDHCP، وكيف تساعد تقنيات NAT في الحفاظ على أمان الشبكات، وكيف تساعد الشبكات الظاهرية الخاصة والجهاز الوكيل (proxy) المستخدمين على الاتصال بأمان واستمرار ذلك الاتصال.

الاتصال بالإنترنت

في الأسبوع الخامس بهذه الدورة، سوف نستكشف تاريخ شبكة الإنترنت، وكيف تطورت، وكيف تعمل اليوم. سوف نفهم طرق الاتصال المختلفة بالإنترنت عبر الكابلات والوصلات اللاسلكية ووصلات الكابلات والأسلاك تحت القبو حتى ينتهي بنا المطاف إلى تناول وصلات الألياف الضوئية. في نهاية هذه الوحدة، ستكون قادرًا على تعريف مكونات الشبكات الواسعة WAN وتعريف موجز لأساسيات الشبكات اللاسلكية والخلوية.

استكشاف الأخطاء وإصلاحها والمستقبل الذي ينتظر الشبكات

تهانينا، لقد وصلت إلى الأسبوع الأخير في الدورة! في الأسبوع الأخير بهذه الدورة، سوف نستكشف مستقبل شبكات الكمبيوتر. وسنغطي أيضًا الجوانب العملية لاستكشاف أخطاء الشبكة وإصلاحها باستخدام أنظمة التشغيل الشائعة. في نهاية هذه الوحدة، ستكون قادرًا على اكتشاف وإصلاح كثير من مشكلات الاتصال الشائع حدوثها في الشبكات، باستخدام الأدوات المتاحة في أنظمة التشغيل Microsoft Windows وMacOS وLinux.

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

يقدم نظرة عامة شاملة عن شبكات الكمبيوتر، من أساسيات التقنيات والبروتوكولات إلى تطبيقاتها العملية

يتبع نموذج الطبقات المعياري في تدريسه، مما يجعله سهل الفهم والمتابعة (TCP/IP وOSI)

يهتم بتعليم كيفية استكشاف أخطاء الشبكة وإصلاحها، وهي مهارة ضرورية في مجال تقنية المعلومات

يغطي تقنيات الحوسبة السحابية والتخزين السحابي، وهي مجالات متنامية ومتطورة في مجال تقنية المعلومات

يقدم أدوات وتقنيات فعالة لاستكشاف أخطاء الشبكة وإصلاحها

Reviews summary

Comprehensive network concepts

This course, titled "أساسيات شبكات الكمبيوتر" and "Computer Network Basics," provides a broad overview of computer networks. This course will take you through the basics of modern network technologies and protocols, concepts such as cloud computing, and the practical applications of troubleshooting and fixing network errors. By the end of this course, you will be able to recognize and describe computer networks in terms of a 5-layer model, understand all the standard protocols involved in TCP/IP communications, become adept at employing effective network troubleshooting and diagnostic tools and techniques, learn about network services, such as DNS and DHCP, which help computer networks function, and understand cloud computing, everything as a service, and cloud storage.

Concepts related to cloud computing.

"... concepts such as cloud computing, and the practical applications of troubleshooting and fixing network errors."

Practical applications of troubleshooting and fixing network errors.

"... concepts such as cloud computing, and the practical applications of troubleshooting and fixing network errors."

In-depth coverage of networking fundamentals.

"This course is titled "أساسيات شبكات الكمبيوتر"... Its description is: "<p>تم تصميم هذه الدورة لتقديم نظرة عامة كاملة عن شبكات الكمبيوتر... <p>"

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 أساسيات شبكات الكمبيوتر with these activities:

Review mathematical concepts for network engineering

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Strengthen your foundation in mathematical concepts essential for network engineering.

Browse courses on Mathematics

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Identify key mathematical concepts used in network engineering, such as algebra, trigonometry, and calculus
Review these concepts using books, online resources, or tutorials

Organize and prioritize course materials

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Enhance your understanding of the course materials by organizing and prioritizing them.

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Review and organize notes, assignments, and other course materials
Identify key concepts and topics covered in the course
Prioritize the materials based on their importance and relevance

Discuss network design with peers

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Gain insights into network design by collaborating with peers.

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Join a study group or online forum for network engineers
Engage in discussions on network design topics, such as addressing schemes, routing protocols, and security measures
Present your own network design proposals and receive feedback from peers

Four other activities

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Configure and troubleshoot network devices

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Gain hands-on experience in configuring and troubleshooting network devices.

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Set up a network lab environment with physical or virtual devices
Configure basic network settings, such as IP addresses, subnet masks, and default gateways
Simulate common network issues, such as cable breaks, IP conflicts, and routing problems
Use diagnostic tools to identify and resolve network connectivity problems

Follow tutorials on network troubleshooting

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Refine your network troubleshooting skills by following guided tutorials.

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Identify a tutorial that covers a topic relevant to your learning goals
Set aside time to complete the tutorial
Follow the tutorial's instructions carefully
Practice applying the troubleshooting techniques to real-world scenarios

Document network configurations and troubleshooting procedures

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Enhance your understanding of network configurations and troubleshooting by documenting them.

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Create a detailed documentation template for recording network configurations
Document the configurations of your network devices, including switches, routers, and firewalls
Develop a step-by-step troubleshooting guide for common network issues
Review and update your documentation regularly to ensure accuracy

Provide mentorship to junior network engineers

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Reinforce your knowledge and help others by mentoring junior network engineers.

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Identify a junior network engineer who seeks guidance
Offer to provide mentorship in specific areas of network engineering, such as design, configuration, or troubleshooting
Meet regularly to share knowledge, answer questions, and provide feedback

Career center

Learners who complete أساسيات شبكات الكمبيوتر will develop knowledge and skills that may be useful to these careers:

Network Administrator

A Network Administrator is responsible for various aspects of computer networking systems. These aspects include planning, upgrading, installing, managing, and troubleshooting. Typical duties include managing the day-to-day operations of LANs and WANs, ensuring network functionality, resolving technical issues, and maintaining network security. Network Administrators monitor computer systems to ensure network efficiency and reliability. This course, by providing a network foundation, including the ability to understand networking architecture, protocols, and troubleshooting, can provide a valuable basis for someone who wants to maximize success in the field of Network Administration.

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Network Architect

A Network Architect designs, implements, and maintains computer networks. Network Architects are responsible for the analysis, design, and implementation of network systems. This course can help build a foundation for Network Architects with an interest in network fundamentals, hardware, security, routing techniques, and network management. Completing this course can introduce skills and knowledge applicable to network design.

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Network Engineer

A Network Engineer is responsible for designing, implementing, and maintaining computer networks. Network Engineers work closely with other IT professionals to ensure that networks meet the needs of the organization. This course's coverage of IP addressing, network troubleshooting, and network security, provide important foundational knowledge for one who wishes to become a successful Network Engineer.

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IT Manager

An IT Manager oversees an organization's computer systems, including local area networks (LANs), wide area networks (WANs), network security, and data storage systems. They plan, implement, and maintain the organization's IT infrastructure, and manage the IT staff. This course's instruction on network connectivity and cloud computing can contribute to the diverse skill set of an IT Manager. The course's focus on network management and the ability to identify and resolve network issues are also directly transferable to the role of IT Manager.

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IT Technician

An IT Technician provides technical support to computer users. IT Technicians install, maintain, and repair computer systems and networks. They also provide technical support to users, both in person and remotely. This course's focus on network configuration and troubleshooting can provide foundational knowledge and equip one for success in resolving end-user network issues, a common duty of IT Technicians.

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Systems Administrator

A Systems Administrator is responsible for the day-to-day operations of an organization's computer systems. Systems Administrators install, configure, and maintain computer systems, networks, and software. They also provide technical support to users and troubleshoot system issues. This course's coverage of network protocols, security, and cloud services is highly applicable to Systems Administration.

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Cloud Architect

A Cloud Architect designs and manages cloud computing systems. Cloud Architects work with clients to assess their needs and develop cloud solutions that meet those needs. They also work with cloud providers to implement and manage cloud systems. This course's coverage of cloud computing fundamentals, including the benefits, challenges, and potential of cloud computing, can equip an aspiring Cloud Architect with foundational knowledge.

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Network Analyst

A Network Analyst is responsible for analyzing and troubleshooting network problems. Network Analysts work with other IT professionals to identify and resolve network issues. They also develop and implement network solutions. This course's comprehensive coverage of network fundamentals and ability to describe how networks operate and troubleshoot issues are valuable for one who wishes to become a successful Network Analyst.

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Data Analyst

A Data Analyst collects, analyzes, and interprets data. Data Analysts use data to identify trends and patterns, and to make recommendations for improving business decisions. This course may be useful for an aspiring Data Analyst who seeks to build a foundation in computer networking, a valuable skill for understanding and analyzing network-related data.

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Database Administrator

A Database Administrator is responsible for the day-to-day operations of an organization's database systems. Database Administrators install, configure, and maintain database systems. They also provide technical support to users and troubleshoot database issues. This course's coverage of network protocols, hardware, and cloud services can be useful foundational knowledge for a DBA, particularly as it pertains to database connectivity, performance, and integration with applications and services.

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Security Analyst

A Security Analyst is responsible for protecting an organization's computer systems from unauthorized access. Security Analysts identify and respond to security threats, and develop and implement security measures. This course may be useful in the field of information security for those with no prior experience or understanding of computer networks, as it provides a foundation in the fundamentals of network security.

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Software Developer

A Software Developer designs, develops, and maintains software applications. Software Developers work with other IT professionals to develop software solutions that meet the needs of an organization. This course may be useful for one who wishes to become a Software Developer with a focus on writing network-related or network-centric applications.

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Web Developer

A Web Developer designs and develops websites. Web Developers work with other IT professionals to create websites that meet the needs of an organization. This course may be useful for one who wishes to become a Web Developer with a focus on website and network performance or dynamic websites that interact with users via web services, network functionality, and other network-based features.

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Technical Writer

A Technical Writer creates documentation for technical products and services. Technical Writers work with other IT professionals to create documentation that is clear, concise, and accurate. This course's focus on explaining technical concepts in an easy-to-understand way can supplement one's path to becoming a Technical Writer. Particularly relevant to the role of a Technical Writer is this course's detailed coverage of the TCP/IP model and network troubleshooting.

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Project Manager

A Project Manager is responsible for planning, organizing, and managing projects. Project Managers work with other IT professionals to ensure that projects are completed on time, within budget, and to the required quality standards. This course's coverage of network management and its focus on developing network skills may help one succeed as a Project Manager for network-related projects.

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