NOCTI - National Occupational Competency Testing Institute Information Technology Fundamentals Questions and Answers 1 — Questions and Answers
Question 1: Which component in a computer is responsible for volatile, short-term storage of data for currently running programs and processes?
- Solid-State Drive (SSD)
- Read-Only Memory (ROM)
- Random Access Memory (RAM) (Correct answer)
- Central Processing Unit (CPU)
Correct answer: Random Access Memory (RAM)
Random Access Memory (RAM) is the primary volatile memory used by a computer to hold data that is actively being used or processed by the CPU. Unlike an SSD or hard drive, data in RAM is lost when the computer is powered off. ROM is non-volatile memory that holds firmware, while the CPU performs calculations and does not serve as primary data storage.
Question 2: A technician is setting up a new small office network. To avoid manually configuring the IP address for each new device that joins the network, which network service should be configured on the router?
- DNS (Domain Name System)
- DHCP (Dynamic Host Configuration Protocol) (Correct answer)
- NAT (Network Address Translation)
- FTP (File Transfer Protocol)
Correct answer: DHCP (Dynamic Host Configuration Protocol)
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to automate the process of configuring devices on IP networks. A DHCP server automatically assigns an IP address, subnet mask, default gateway, and DNS server information to each client device.
Question 3: A user receives an email that appears to be from their bank, asking them to click a link and verify their account details. The link leads to a fraudulent website designed to steal their credentials. Which of the following BEST describes this type of attack?
- Ransomware
- Spyware
- A Trojan Horse
- Phishing (Correct answer)
Correct answer: Phishing
Phishing is a social engineering attack where an attacker sends a fraudulent message designed to trick a person into revealing sensitive information. This is often done via email, where the attacker masquerades as a reputable entity. Ransomware encrypts files, Spyware secretly gathers information, and a Trojan horse is malware disguised as legitimate software.
Question 4: What is the primary function of a computer's operating system (OS)?
- To run antivirus scans and protect against malware.
- To provide a web browsing interface for accessing the internet.
- To manage hardware resources and provide a platform for software applications to run. (Correct answer)
- To execute complex mathematical calculations and render graphics.
Correct answer: To manage hardware resources and provide a platform for software applications to run.
The primary function of an operating system is to act as an intermediary between the computer hardware and the user or application software. It manages resources such as the CPU, memory, storage devices, and provides common services that applications need to run. While an OS may include security or web browsing features, its core role is resource management.
Question 5: A user reports that their computer is running very slowly. According to standard troubleshooting methodology, what should be the technician's FIRST step?
- Immediately run a full system virus scan.
- Reinstall the operating system.
- Gather information from the user by asking clarifying questions. (Correct answer)
- Check for and install the latest software updates.
Correct answer: Gather information from the user by asking clarifying questions.
The first step in any structured troubleshooting process is to identify the problem by gathering information. This involves asking the user questions to understand the symptoms, when the problem started, and if any recent changes were made. Acting before gathering information, such as running a scan or reinstalling the OS, is inefficient and may not address the root cause.
Question 6: What is the decimal equivalent of the binary number 1011?
- 9
- 11 (Correct answer)
- 13
- 15
Correct answer: 11
To convert the binary number 1011 to decimal, you multiply each digit by its corresponding power of 2, starting from the right (2^0). The calculation is (1 * 2^3) + (0 * 2^2) + (1 * 2^1) + (1 * 2^0), which equals 8 + 0 + 2 + 1 = 11.
NOCTI - National Occupational Competency Testing Institute Information Technology Fundamentals Questions and Answers 1
Which component in a computer is responsible for volatile, short-term storage of data for currently running programs and processes?