Match basic computing/data terms to their definitions. List I (Term) List II (Definition) A. Interface 1. A measure of the rate of data transmission B. A bit 2. A binary digit (0 or 1) C. Baud speed 3. The common boundary between subsystems or devices

Introduction / Context:
Core vocabulary in computing and communications often appears in exams. Understanding what an interface is, what a bit represents, and what baud (symbol rate) measures helps avoid conceptual errors when reading specifications.

Given Data / Assumptions:

• Interface refers broadly to boundaries across which systems interact (hardware or software).
• Bit is the atomic unit of digital information: 0 or 1.
• Baud is symbols per second, a rate measure for signaling.

Concept / Approach:

We match each List I term to the best List II definition: interface→boundary, bit→binary digit, baud speed→rate of data transmission (symbol rate). Although baud and bits per second can differ with multilevel coding, baud remains a measure of signaling events per second.

Step-by-Step Solution:

Verification / Alternative check:

Serial links list 9600 baud, 115200 baud, etc. Documentation distinguishes bps (bits per second) from baud when modulation encodes multiple bits per symbol, reinforcing that baud is a rate measure.

Why Other Options Are Wrong:

• Calling a bit “a rate” confuses quantity of information with transmission speed.
• Defining an interface as a number is incorrect; it is a boundary/contract between subsystems.

Common Pitfalls:

Assuming baud equals bits per second in all cases; equality holds only for binary signaling with one bit per symbol.

Final Answer:

A-3, B-2, C-1