Réseaux
190 documents à télécharger gratuitement
Cours, examens, TD, TP et exercices de réseaux. Thèmes couverts : TCP/IP, routage, Cisco, VLAN, administration réseau.
Ce document traite des modèles hiérarchiques et des modèles de données réseau. Il décrit les caractéristiques principales de différents types de liens entre entités, tels que 1:1, 1:N, N:1, et N:M. Des exemples spécifiques sont donnés pour chaque type de lien afin d'illustrer leur sémantique.
This thesis addresses the implementation of a network supervision solution for the Tunisian Television's IT infrastructure. It begins by assessing the current network infrastructure and identifying limitations. A new network architecture is proposed, involving the configuration and installation of Cisco switches and VLANs. The project evaluates various supervision tools, selecting Cacti as the primary software for monitoring network performance. The final solution demonstrates successful network visualization and management, ensuring improved reliability and performance.
This document provides a comprehensive overview of DHCP (Dynamic Host Configuration Protocol) and its role in network infrastructure. It explains the configuration of DHCP server services, including scope, reservations, and options, as well as the process of IP address allocation and lease renewal. The document also details the function and configuration of DHCP relay agents and highlights administrative advantages of using DHCP over manual IP configuration. Each section includes practical steps for implementation, enabling users to automate and optimize network configurations.
This study addresses the development of an active monitoring solution for 3G and data networks, focusing on QoS measurement and client satisfaction. The methodology includes simulating client-side network activity, calculating key performance indicators (KPIs), and storing them in a database. Existing solutions like AT Command Tester and Tems Automatics are critiqued for their limitations, prompting the creation of a more efficient architecture encompassing functionalities such as HTTP and FTP testing, ping tests, and script automation. Results demonstrate enhanced operational insights and...
This document presents a comprehensive overview of Tunisie Telecom, including its history, activities, and organizational structure. It also discusses the Centre de construction de lignes and its significant role in telecommunications. Finally, the document analyzes various aspects of urban telephone networks and services provided by CCL.
This document discusses the internship experience at Tunisie Telecom, highlighting the organization's history, activities, and structure. It also covers various aspects of urban telephone networks and the services provided by the CCL. The conclusion expresses gratitude towards Tunisie Telecom for the opportunity to gain practical experience in the telecommunications field.
This document presents the report of an internship conducted at Société Tunisienne d'Entreprises de Télécommunication (SOTETEL) during the period from January 11, 2016, to February 6, 2016. It outlines the company's profile, the organization structure, and the specific tasks performed during the internship. The report also highlights the importance of practical training in the engineering education curriculum.
Ce mémoire se concentre sur l'étude, la conception et la réalisation d'un site de commerce électronique pour LSAT Nokia, visant à enrichir leur base de données client. Les objectifs incluent la présentation des produits, la facilitation des transactions commerciales, et le suivi des livraisons. Ce rapport résume toutes les étapes du projet.
The document provides a detailed examination of IEEE 802.3 frames and Ethernet networks through structured technical queries and exercises. It explores encapsulations for protocol differentiation, broadcast frame behavior, spanning tree protocol functionality, collision handling with binary exponential backoff, and ARP resolution mechanics. Case studies focus on network topology optimization and subnet addressing, alongside practical scenarios in networking such as table routing and inter-network communication.
Ce projet porte sur la conception et le développement d'un outil pour détecter les communautés dans les réseaux sociaux. L'objectif principal est de créer un système qui améliore l'intelligence des réseaux sociaux en permettant une meilleure compréhension de leur topologie. Le projet aborde les besoins fonctionnels et non fonctionnels nécessaires à son développement.
This document serves as an introduction to networking, exploring physical structuring, applications, and types of networks. It covers essential concepts including network topologies and transmission modes. The information presented is foundational for understanding computer networks and their components.
This document provides an in-depth overview of Ethernet frame formats, specifically Ethernet V2 and Ethernet 802.3, based on the OSI model's data link layer. It describes the structure of Ethernet frames, including fields such as preamble, MAC addresses, EtherType/length, and CRC, emphasizing their roles in network communication. The text contrasts the Ethernet V2 and 802.3 frame types, highlighting their differences in the EtherType/length field and utilization in various network scenarios. Key concepts like unicast, multicast, broadcast, padding for minimum frame sizes, and cyclic redunda...
This document is a compilation of exercises designed to develop an understanding of networking concepts, covering topics like OSI layers, Ethernet protocol frames, IPv4 addressing, transport layer mechanisms, error correction codes, and communication signal theory. Methodologies provided include practical scenarios, detailed problem-solving guides, and implementation-oriented questions. Findings emphasize the importance of addressing communication challenges through modular designs, efficient bandwidth utilization, and robust error correction. Essential technical concepts, formulas, and rea...
This document outlines a series of hands-on networking tasks aimed at deploying and configuring IP networks on Linux and MS Windows systems, with a focus on static and dynamic routing. Specific experiments include setting static IP addresses, managing ARP tables, and network diagnostics using tools such as Wireshark. Additionally, subnet division, route addition, and packet forwarding are analyzed with practical configurations and troubleshooting based on real-world network interaction. The methodology emphasizes the use of virtual machines for simulating network topologies.
This document contains an exam on data link protocols and network engineering, focusing on specific technical questions related to transmission times, collision detection, and LAN design. The exam tests understanding of protocols such as Stop-and-Wait and CSMA/CD, along with practical exercises involving calculations.
Ce document traite des protocoles de liaisons de données dans le contexte des réseaux. Il décrit la structure des trames, les méthodes de délimitation et les techniques de contrôle des erreurs. L'importance de la synchronisation et de l'identification des trames est également abordée.
This document is a two-hour timed exam on local networks, with a specific focus on Ethernet and WiFi technologies. The methodology explores collision detection mechanisms, duplex configurations, and access methods like CSMA/CD and CSMA/CA in Ethernet and WiFi networks. The findings analyze the mathematical probabilities of retransmissions during collisions and conclude with an observation of the 'capture effect' unique to Ethernet but absent in WiFi due to differing backoff mechanisms. It emphasizes the comparative designs of collision handling and retransmission protocols between the techn...
Ce document traite des méthodes d'accès au canal dans les réseaux, en mettant l'accent sur les liaisons point-à-point et multipoints. Il aborde des concepts tels que la contention, la synchronisation, et les classifications des méthodes d'accès, notamment les approches centralisée et distribuée. L'évolution du protocole ALOHA est également examinée, en soulignant son impact sur la communication sans fil.
This document provides an overview of computer network engineering, focusing on the complexities of modeling systems. It discusses the processes of modeling, validation, optimization, and various methods for evaluating system performance. The course also explores applications in emerging technologies such as the Internet of Things.
This document outlines a course on network engineering led by Amine Dhraief. It covers various methods for evaluating network performance and includes practical examples such as the analysis of IEEE 802.11 networks. The course combines lecture content with applied methodologies in the field of network research.
This chapter discusses Bayesian networks as tools for knowledge representation and reasoning with incomplete information. It highlights their historical development, applications across various domains like bioinformatics and risk management, and elaborates on probabilistic graphical models including their structures and dependencies. Furthermore, it presents real-world applications such as in diagnostic systems and fraud detection.
Cette document explore les principes fondamentaux de la couche de liaison de données dans les communications. Il aborde les performances des communications, y compris le temps d'émission, le délai de propagation et les mécanismes de traitement. En outre, il décrit la fiabilité des transferts d'informations et les services associés à la gestion des liaisons de données.
Ce cours avancé enseigne aux étudiants les services et protocoles les plus utilisés sur Internet. Il inclut des installations et configurations de services réseau dans des environnements réels et simulés, basé sur des programmes CCNA. Les étudiants apprendront notamment les protocoles des couches application, transport et réseau.
Le document traite des protocoles de routage par état de liaisons, en se concentrant particulièrement sur le protocole OSPF. Il décrit les processus de routage, la création d’une arborescence et l'algorithme de Dijkstra. Le contenu se divise en sections explicatives et instructions sur la configuration et l'exécution du protocole OSPF.