EDPT (Electronic Data Processing Test) 4 — Questions and Answers
Question 1: What is the hexadecimal equivalent of the decimal number 255?
- EF
- FF (Correct answer)
- FE
- 1FF
Correct answer: FF
255 in decimal equals FF in hexadecimal because 15×16 + 15 = 255, and F represents 15 in hex.
Question 2: Which of the following is a high-level programming language?
- Machine code
- Assembly language
- Python (Correct answer)
- Binary
Correct answer: Python
Python is a high-level programming language with human-readable syntax; machine code and assembly are low-level languages.
Question 3: In data processing, what is a 'batch process'?
- Processing transactions one at a time as they arrive
- Collecting transactions and processing them all at once (Correct answer)
- Encrypting data before storage
- Running multiple programs simultaneously
Correct answer: Collecting transactions and processing them all at once
Batch processing collects a group of transactions and processes them together at a scheduled time, rather than immediately as each transaction occurs.
Question 4: Which data structure follows a Last-In, First-Out (LIFO) principle?
- Queue
- Stack (Correct answer)
- Array
- Linked list
Correct answer: Stack
A stack follows LIFO (Last-In, First-Out), meaning the most recently added element is the first one removed.
Question 5: An IP address in IPv4 format consists of how many bits?
- 16 bits
- 64 bits
- 128 bits
- 32 bits (Correct answer)
Correct answer: 32 bits
An IPv4 address is 32 bits long, represented as four 8-bit octets separated by dots (e.g., 192.168.1.1).
Question 6: What term describes unwanted or irrelevant data that can negatively affect processing results?
- Overflow
- Redundancy
- Noise (Correct answer)
- Latency
Correct answer: Noise
In data processing, noise refers to unwanted, erroneous, or irrelevant data that can distort results or reduce accuracy.
Question 7: Which component of a computer system temporarily stores data that the CPU is actively using for the fastest possible access?
- Hard drive
- Cache memory (Correct answer)
- Optical drive
- Secondary storage
Correct answer: Cache memory
Cache memory is a small, extremely fast memory layer located close to the CPU that stores frequently accessed data to reduce processing delays.
EDPT (Electronic Data Processing Test) 4
What is the hexadecimal equivalent of the decimal number 255?