Mongla Port Authority; Assistant Programmer Exam: 2023প্রশ্ন ও সমাধান

A Personal Area Network (PAN) is a small-scale network — range of just a few meters, within arm's reach or one room — connecting an individual's personal devices to each other.

graph TD
Phone((Smartphone)) -- Bluetooth --> Headset((Wireless Earbuds))
Phone -- Bluetooth --> Watch((Smartwatch))
Laptop((Laptop)) -- USB --> Printer[(Printer)]
Phone -. Wi-Fi Direct .-> Laptop

Components needed:

• Devices: smartphones, laptops, tablets, wearables, and wireless peripherals — the endpoints being connected.
• Wireless communication technology: Bluetooth (2.4 GHz, short range, common for earbuds/keyboards/mice) and Zigbee (low-power, used in home-automation/IoT sensor PANs).
• Wired communication technology: USB, connecting peripherals like printers or external drives directly to a PC.
• PAN coordinator/hub (optional): in Zigbee-based PANs, one device coordinates the small mesh of sensors.

Example: a smartphone paired via Bluetooth to wireless earbuds and a smartwatch, while also connected over USB for charging — all forming one PAN centered on that individual's devices.

Exam takeaway: a PAN is the smallest network scope (person-centered, a few meters), built from personal devices plus short-range wireless (Bluetooth/Zigbee) or wired (USB) links — contrast with LAN (building), MAN (city), and WAN (country/global).