IGDTUW 2025 — Computer PYQ

The correct answer is C) USB (Universal Serial Bus).

Conceptual Breakdown

The USB port is the industry-standard connector for peripheral devices. Its design allows for "plug-and-play" capability, meaning the operating system automatically detects and configures the device without requiring a system restart.

• USB (Universal Serial Bus): Specifically designed to connect a wide range of peripherals, including flash drives, external hard drives, keyboards, and mice. It provides both data transfer and, in many cases, electrical power to the device.

• HDMI (High-Definition Multimedia Interface): Primarily used for transmitting high-quality digital video and audio to monitors, TVs, or projectors.

• Ethernet: Used for wired network connections, enabling communication between computers in a Local Area Network (LAN).

• VGA (Video Graphics Array): An older, legacy analog interface used primarily for connecting display monitors.

Technical Connectivity Representation

In terms of data throughput capacity (bandwidth $B$), USB has evolved through generations. If $D_{data}$ is the total volume of data and $T_{time}$ is the time taken for transfer, the efficiency of the connection is defined as:

$$B=\frac{D_{data}}{T_{time}}$$

USB 3.x and USB4 standards provide high bandwidth ($B$) sufficient for modern high-speed storage devices:

$$B_{USB4}\approx 40\text{ Gbps}$$

Because of this high-speed capability and universal compatibility, USB remains the primary choice for external storage, unlike the other listed ports which serve distinct specialized functions (display or networking).