This course introduces the mathematical foundations of modern communication networks, with particular emphasis on the architecture of Internet. Inside the general framework of the Bachelor degree in “Electronics and Communication Engineering” this is the fundamental course in the area of telecommunications, giving the basic foundations of both the physical and network layer of modern telecommunication systems. The course is fully given in English.

The most important learning outcomes are: - knowledge of the general concepts of communication networks: network topologies, switching techniques (circuit and packet), multiplexing and multiple access techniques, service models (client-server, peer-to-peer), layered protocol architectures, traffic characterization, QoS, error recovery - knowledge of Ethernet and Wi-Fi protocols - knowledge of network and transport protocols in the Internet: IP, TCP/UDP - knowledge of the routing in IP networks - ability to design and plan an IP network - ability to configure an IP network and its routing

This course has the following prerequisites • a good understanding of the mathematical topics presented in the first two years • an excellent understanding of the methodologies and techniques given during the "Signals and Systems" course

• General concepts of computer networks: network classification based on the covered area, network topologies, switching techniques (circuit and packet), multiplexing and multiple access techniques, service models (client-server, peer-to-peer), layered protocol architectures, traffic characterization and QoS requirements (10h) • Error recovery and flow control techniques: ARQ window protocols, data-link layer protocols (4h) • Ethernet and Wi-Fi networks (10h) • Network protocols in the Internet: IPv4 and ICMP, IP addressing, ARP (14h) • Routing in the Internet: IP addressing, routing tables, NAT (12h) • Internet transport layer protocols (TCP, UDP) (6h) • Internet application layer protocols (SMTP, POP and IMAP, HTTP, DNS) (4h)

Theoretical lectures will be complemented by practice classes, which will be devoted to the solution of numerical problems and of small design projects on the course main topics.

The slides and the handouts followed during the classes will be available on the POLITO Didattica web portal. Books suggested as text reference: • A.Pattavina: “Reti di telecomunicazioni", Mc.Graw-Hill (in Italian) • J.F. Kurose, K.W. Ross: 'Computer Networking: A Top-Down Approach', Pearson (English) • J.F. Kurose, K.W. Ross: 'Reti di calcolatori e Internet: un approccio top-down', Pearson Italia (in Italia) The exercises on network protocols and on the design of IP networks will follow: • A.Bianco, C.Casetti, P.Giaccone, Esercitazioni di reti telematiche, CLUT (in Italian)

Modalità di esame: Prova orale obbligatoria; Prova scritta tramite PC con l'utilizzo della piattaforma di ateneo;

The exams will consist of a written test and of a MANDATORY oral examination. The exam will be administered as follows: 1) a multiple choice test will be erogated through the "Exam" platform, with integration of automatic proctoring mechanisms (Respondus). The test may include both theoretical questions and short numerical exercises. The test score ranges from 0 to 30 cum laude. Students who receive a score >=18 will be allowed to take the oral examination. Students who receive a score lower than 18 will NOT be allowed to take the oral examination and MUST retry the multiple choice test in a successive exam call. 2) The oral examination will last approximately 30 mins and will include both theoretical questions and numerical exercises. The oral examination score ranges from 0 to 30 cum laude. It will be erogated using either the virtual classroom platform or any other videoconferencing application previously agreed with the candidate. The schedule of the oral examinations will be made available after the publication of the results of the multiple choice test. 3) The final score will be computed according to this formula: round(0.2*(test score)+0.8*(oral examination score)).

Modalità di esame: Prova orale obbligatoria; Prova scritta tramite PC con l'utilizzo della piattaforma di ateneo;

The exams will consist of a written test and of a MANDATORY oral examination. The exam will be administered as follows: 1) a multiple choice test will be erogated through the "Exam" platform, with integration of automatic proctoring mechanisms (Respondus). The test may include both theoretical questions and short numerical exercises. The test score ranges from 0 to 30 cum laude. Students who receive a score >=18 will be allowed to take the oral examination. Students who receive a score lower than 18 will NOT be allowed to take the oral examination and MUST retry the multiple choice test in a successive exam call. 2) The oral examination will last approximately 30 mins and will include both theoretical questions and numerical exercises. The oral examination score ranges from 0 to 30 cum laude. It will be erogated using either the virtual classroom platform or any other videoconferencing application previously agreed with the candidate. The schedule of the oral examinations will be made available after the publication of the results of the multiple choice test. 3) The final score will be computed according to this formula: round(0.2*(test score)+0.8*(oral examination score)).