Communication

/kəˌmjuːnɪˈkeɪʃən/

noun … “Exchange of information between entities.”

Communication in computing refers to the transfer of data or signals between systems, devices, or components to achieve coordinated operation or information sharing. It encompasses both hardware and software mechanisms, protocols, and interfaces that enable reliable, timely, and accurate data exchange. Effective communication is essential for networking, distributed systems, and embedded control applications.

Key characteristics of Communication include:

/ˈreɪdioʊ/

noun … “Information carried on invisible waves.”

/ˌɪnfərˈmeɪʃən ˈθiəri/

noun … “Mathematics of encoding, transmitting, and measuring information.”

/ˈʃænən ˈlɪmɪt/

noun … “Maximum reliable information rate of a channel.”

Shannon Limit, named after Claude Shannon, is the theoretical maximum rate at which information can be transmitted over a communication channel with a specified bandwidth and noise level, while achieving error-free transmission. Formally defined in information theory, it sets the upper bound for channel capacity (C) given the signal-to-noise ratio (SNR) and bandwidth (B) using the Shannon-Hartley theorem: C = B * log2(1 + SNR).

Key characteristics of the Shannon Limit include:

/ˈviː.diː.ɛs.ɛl.tuː/

noun — "squeezing fiber-class speed out of copper."

VDSL2, short for Very-high-bit-rate Digital Subscriber Line 2, is an enhanced broadband access technology that delivers high-speed data over existing copper telephone lines. It improves upon VDSL by supporting higher data rates, wider frequency bands, and better performance over short loop lengths, making it a key technology for last-mile broadband.

/viː.læn/

noun — "the invisible walls that organize a network."

VLAN, short for Virtual Local Area Network, is a network configuration that segments a physical LAN into multiple logical networks, allowing devices to be grouped together based on function, department, or security requirements rather than physical location. VLANs improve traffic management, enhance security, and reduce broadcast domains within enterprise networks.

/wæn/

noun — "the network that stretches far beyond your office walls."

WAN, short for Wide Area Network, is a telecommunications network that connects multiple local area networks (LANs) over large geographic areas, such as cities, countries, or even continents. WANs enable data exchange between remote sites, branch offices, and cloud services, often relying on leased lines, MPLS, or Internet connections.

/ˌdʒiː.fæst/

noun — "ultra-fast broadband over existing phone lines."

/ˈjuː.ɛm.tiː.ɛs/

noun — "3G mobile networks made faster, smarter, and more reliable."

/ˈwaɪˌfʌɪ ˈlæn/

noun — "a local network that connects devices wirelessly."

WLAN, short for Wireless Local Area Network, is a network that allows devices such as computers, smartphones, and IoT (IoT) devices to communicate and share resources without physical cables. WLANs use radio waves to transmit data, typically following IEEE 802.11 standards, and provide the flexibility and mobility that wired LANs cannot offer.