Introduction to IT - D322
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Free Introduction to IT - D322 Questions
What does a compiler doWhat does a compiler do
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Converts instructions one statement at a time when the program is run
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Stores and manages data and develops data-driven reports
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Translates source code into machine language
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Manages computer hardware and software resources and provides common services for computer programs
Explanation
Correct Answer C: Translates source code into machine language
Explanation:
A compiler translates an entire program’s source code into machine language (binary) before execution, allowing the program to run directly on the hardware. This often results in faster performance once compiled.
Why the Other Options Are Incorrect:
A. Converts instructions one statement at a time when the program is run
This describes an interpreter, not a compiler.
B. Stores and manages data and develops data-driven reports
This describes the function of a database management system (DBMS) or a reporting tool, not a compiler.
D. Manages computer hardware and software resources and provides common services for computer programs
This is the role of an operating system, not a compiler.
A developer is creating an application and needs a variable to store the scientific name of a tree species.
Which data type should be used for this purpose
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Boolean
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Character
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Integer
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Character string
Explanation
Correct Answer D: Character string
Explanation:
D. Character string
A character string is the correct data type for storing text-based information such as the scientific name of a tree species (e.g., Quercus robur). It allows multiple letters, spaces, and even punctuation.
Why the Other Options Are Incorrect:
A. Boolean
Boolean stores true or false values, not text.
B. Character
Character data holds only a single letter or symbol, which is insufficient for a full name.
C. Integer
Integer stores whole numbers, which do not apply to scientific names.
Which component of an operating system uses scheduling to control access to shared resources
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File manager
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User interface
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Kemel
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Driver
Explanation
Correct Answer C: Kernel
Explanation:
C. Kernel
The kernel is the core component of an operating system. It handles scheduling, memory management, and resource allocation, ensuring that multiple programs can safely and efficiently access the CPU, memory, and other hardware. It controls how and when processes get access to shared system resources.
Why the Other Options Are Incorrect:
A. File manager
The file manager controls access to files and directories, not system resources like CPU scheduling.
B. User interface
The user interface allows users to interact with the operating system, but it doesn't handle scheduling or resource control.
D. Driver
Drivers act as translators between the OS and hardware devices but do not manage scheduling or shared resource access.
Which category of software is installed as a trial and can be upgraded for a lee
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Freeware
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Closed-source
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Public domain
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Shareware
Explanation
Correct Answer D: Shareware
Explanation:
D. Shareware
Shareware is software that is distributed for free on a trial basis, often with limited features or usage time. After the trial period, users are usually required to pay a fee to unlock the full version or continue using it legally.
Why the Other Options Are Incorrect:
A. Freeware
Freeware is completely free to use and does not require payment or upgrades after installation.
B. Closed-source
Closed-source software refers to programs whose source code is not shared with the public. It doesn’t describe the pricing model.
C. Public domain
Public domain software is free to use, modify, and distribute without any restrictions or fees. It is not limited by a trial period.
What is one of the three broad categories of risks that a project may encounter
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Risks of disagreement
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Risks of the unknown
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Risks in planning
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Risks of dependencies
Explanation
Correct Answer D: Risks of dependencies
Explanation:
Dependency risks arise when a project task depends on the completion of another task, deliverable, or external input. These are one of the three broad risk categories in project management, along with technical risks and external risks.
Why the Other Options Are Incorrect:
A. Risks of disagreement
This refers more to interpersonal or stakeholder conflict, which is not classified as one of the three main project risk categories.
B. Risks of the unknown
While uncertainty is a general feature of risk, “risks of the unknown” is too vague to be a formal category.
C. Risks in planning
Planning may introduce risk, but it is not one of the three main categories. Instead, it’s part of how you manage and mitigate risks.
A programmer needs to create a variable that holds an indication of whether a fie does or does not have an error In iL
What is the name of the data type that should be used
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Integer
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Character
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Character string
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Boolean
Explanation
Correct Answer D: Boolean
Explanation:
D. Boolean
A Boolean data type is used to represent true or false values, making it ideal for indicating whether an error is present or not (e.g., error = true or error = false).
Why the Other Options Are Incorrect:
A. Integer
An integer stores whole numbers, not true/false values.
B. Character
A character represents a single letter or symbol, not a logical state.
C. Character string
A character string holds multiple characters, such as text, which is unnecessary for a simple true/false indicator.
Which computing generation is associated with the exclusive use of machine languages and punch cards
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Fourth
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Third
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Second
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First
Explanation
Correct Answer D: First
Explanation:
The first generation of computing (1940s–1950s) was characterized by the exclusive use of machine languages (binary code) and punch cards for input and programming. These early computers were large, slow, and based on vacuum tubes.
Why the Other Options Are Incorrect:
A. Fourth
The fourth generation introduced microprocessors and high-level languages—not punch cards.
B. Third
The third generation used integrated circuits and began transitioning away from punch cards.
C. Second
The second generation introduced assembly languages and transistors, improving speed and usability over the first generation.
Which physical location offers an ideal place for storage that needs to be off-sile
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Coastlands
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Cold climates
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Caves
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Warm climates
Explanation
Correct Answer C: Caves
Explanation:
Caves offer natural protection from environmental threats like storms, wildfires, and extreme temperatures. Their stable temperature and humidity make them ideal for secure, off-site storage, including data backups and archival materials.
Why the Other Options Are Incorrect:
A. Coastlands
Coastal areas are prone to flooding, hurricanes, and salt corrosion, making them less reliable for secure off-site storage.
B. Cold climates
Cold climates may help with cooling but don't offer consistent protection from natural disasters or human interference.
D. Warm climates
Warm climates can increase cooling costs and pose risks such as heat damage, making them unsuitable for long-term secure storage.
What is the name of the networking technology that reduces network traffic on a local area network by management of network messages
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Firewall
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Repeater
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Server
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Switch
Explanation
Correct Answer D: Switch
Explanation:
A switch is a networking device that filters and forwards data only to the specific device that needs it, rather than broadcasting to all devices on the network. This targeted message delivery significantly reduces network traffic and improves performance on a local area network (LAN).
Why the Other Options Are Incorrect:
A. Firewall
A firewall controls access to or from a network for security purposes but does not manage local network traffic to reduce it.
B. Repeater
A repeater is used to extend the range of a network by amplifying signals, but it does not manage or reduce traffic.
C. Server
A server provides services or resources to other computers but is not responsible for managing or reducing general network traffic.
Based on ari analysis of a company's needs, a database should be installed so that records are stored in structures consisting of data and methods
What is the name of the database that satisfies this need
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Distributed
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NoSQL
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Flat-file
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Object-oriented
Explanation
Correct Answer D: Object-oriented
Explanation
:D. Object-oriented
An object-oriented database stores data in the form of objects, which include both data (attributes) and methods (functions or procedures). This structure aligns closely with object-oriented programming and is ideal for complex data relationships and behaviors.
Why the Other Options Are Incorrect:
A. Distributed
A distributed database spreads data across multiple locations but doesn't inherently use object-based storage.
B. NoSQL
NoSQL databases support unstructured and semi-structured data, often in key-value, document, or graph formats—not objects with methods.
C. Flat-file
Flat-file databases store data in a single table or file and do not support objects or methods.
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