IGDTUW 2025 — Computer PYQ
IGDTUW | Computer | 2025______ is also known as electronic disk.
Choose the correct answer:
- A.
USB Sticks
- B.
Network Storage Servers
- C.
Solid-State Drive
(Correct Answer) - D.
USB Hard Drives
Solid-State Drive
Explanation
The correct answer is (c) Solid-State Drive.
Conceptual Breakdown
A Solid-State Drive (SSD) is frequently referred to as an "electronic disk" because, unlike traditional Hard Disk Drives (HDDs) that use spinning magnetic platters and mechanical heads to read and write data, an SSD uses purely electronic, semiconductor-based flash memory (NAND).
Why "Electronic Disk"? The term highlights that it functions as a storage medium (like a disk) but relies entirely on electronic integrated circuits rather than physical rotation.
Why others are not the "Electronic Disk": While USB sticks (a) also use flash memory, the term "electronic disk" is standard industry nomenclature specifically reserved for SSDs due to their role as the primary storage device replacing traditional rotating disks in computers.
Technical Representation
In computer architecture, the performance difference between a traditional mechanical disk and an electronic disk (SSD) can be modeled by their seek time (Ts).
For an HDD, the seek time is dependent on the physical rotation speed (ω) and the actuator arm movement (tm):
Ts(HDD)=tm+2ω1
For an SSD, there are no moving parts, so the seek time is near zero (Ts≈0):
Ts(SSD)≪Ts(HDD)
Because Ts(SSD) is negligible, an SSD acts as a high-speed, purely electronic replacement for the traditional mechanical disk, justifying the term "electronic disk."
