Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
131
Which is an invalid visibility label in inheritance?
Answer:
Friend
Friend is not a visibility specifier for inheritance.
132
Utility software is specifically designed to:
Answer:
Help manage, maintain, and control computer resources.
Utility software supports the computer infrastructure. Examples include antivirus software, disk cleanup tools, and file compression programs, all of which help optimize and maintain the system.
133
Microsoft Access and Corel Paradox are examples of:
Answer:
Relational database systems
Both Microsoft Access and Corel Paradox are examples of relational database management systems.
134
What part of object-oriented technology defines superclass and subclass relationships?
Answer:
Inheritance
Inheritance is a key concept where subclasses inherit properties from a superclass.
135
What is a key advantage of proprietary software for many businesses?
Answer:
It often comes with professional support, stability, and a clear roadmap.
Businesses often choose proprietary software because it is backed by a single company that is responsible for maintenance, provides guaranteed support, and has a vested interest in keeping the product stable and updated.
136
How does an interpreter work in a programming language?
Answer:
It runs the program line by line, converting each line to machine code.
An interpreter processes a high-level language program by translating and executing it one statement at a time. It does not create a separate executable file; instead, it performs the translation during the program's execution, which allows for easier debugging but can be slower than running compiled code.
137
The GPL (General Public License) is a type of license commonly associated with:
Answer:
Free and Open-Source Software
The GPL is a widely used "copyleft" license that ensures that software remains free by requiring that all modified and derivative works also be licensed under the GPL.
138
The meaning of the statements and commands in a programming language is referred to as its:
Answer:
Semantics
Semantics refers to the logic and meaning behind the code. A program can be syntactically correct but have semantic errors (logical errors) that cause it to produce the wrong output.
139
What is the primary function of a web browser like Google Chrome or Mozilla Firefox?
Answer:
To access and display websites on the internet.
A web browser is an application software designed to retrieve, present, and traverse information resources on the World Wide Web.
140
____________translates and executes program at run time line by line?
Answer:
Interpreter
An interpreter is a computer program that directly executes instructions written in a programming or scripting language, without requiring them to have been previously compiled into a machine language program. It translates and executes the program line by line at runtime.