Telecom Topic Discussion

  20 important questions for L2 Network Engineers What is the purpose of the Data Link layer in the OSI model, and how does it differ from the Physical layer? Answer: The Data Link layer is responsible for framing and addressing data for reliable communication within a local network. It differs from the Physical layer by providing a means to access the physical medium and addressing devices on the network. Explain the role of MAC addresses in networking and how they are assigned. Answer: MAC addresses uniquely identify network interface cards (NICs) and are assigned by the manufacturer. They are crucial for addressing and delivering frames within a local network. What is Ethernet, and how does it function in a local area network (LAN) environment? Answer: Ethernet is a widely used LAN technology. It employs a protocol for data link layer communication, using frames to transmit data between devices on the same network. Describe the difference between half-duplex and full-duplex c...

  20 important questions for L1 Network Engineers What is the OSI model, and why is it essential in networking? The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers. It helps in understanding, designing, and discussing network architectures. The layers include physical, data link, network, transport, session, presentation, and application. Explain the difference between TCP and UDP protocols. TCP (Transmission Control Protocol) is connection-oriented and provides reliable, ordered, and error-checked delivery of data. UDP (User Datagram Protocol) is connectionless and offers a simpler, faster, and more lightweight communication method but without guaranteed delivery. How does ARP work, and what is its purpose in networking? ARP (Address Resolution Protocol) is used to map a known IP address to a MAC address in a local network. When a device wants to communicate ...