JKSSB Sub Inspector of Police (JKPSI) 2022 — Q107 Solved Answer with Explanation

JKSSB Sub Inspector of Police (JKPSI) — Computer Knowledge — 2022

View the full solved paper: JK PSI 2022

Question

A printed circuit board that can be installed to enhance a computer's capabilities, as by increasing memory or improving graphics is called

  1. A. writing tablet
  2. B. keyboard
  3. C. expansion board (Correct answer)
  4. D. NIC controller

Correct Answer

Option C — expansion board

Detailed Solution & Explanation

An expansion board (also called an expansion card or add-in card) is a printed circuit board that can be inserted into an expansion slot on a computer's motherboard to add or enhance functionality. Examples include graphics cards (GPU), sound cards, and network interface cards (NIC). They allow users to upgrade their computer's capabilities without replacing the entire system. A keyboard is an input device; a writing tablet is a stylus input device; an NIC controller is one specific type of expansion board.