Computer Science | MCQs

Explanation

A Table is a collection of related records in a database.

It organizes data into rows and columns, where each row represents a record, and each column represents a field or attribute.

Unlike a file, which is a collection of data without any inherent structure, a table in a database is designed to store structured and related information.

A table is a fundamental component of a relational database, providing a systematic way to organize and manage data.

Explanation

In DBMS, repetition of data is called redundancy.

Redundancy leads to wastage of space and potential data inconsistency.

Explanation

Object-oriented programming (OOP) languages focus on the concept of "objects," which are entities that encapsulate data and methods (functions) related to that data.

Java is designed around this paradigm.

It allowing developers to create classes and objects that interact with each other. 

Explanation

Every algorithm begins with a start point and ends at a stop or termination point.

These ensure the algorithm has a defined flow and endpoint for execution.

Explanation

The basic language of a computer consists of opcode and operand.

The opcode specifies the operation to be performed, while the operand indicates the data or address involved in the operation.

Explanation

 Digital marketing refers to using online channels to promote products or services,

These three tactics fall under that umbrella: 

Social media marketing:

Utilizing platforms like Facebook, Instagram, or Twitter to reach and engage with potential customers. 

Email marketing:

Sending promotional messages directly to customers' inboxes. 

Search engine optimization (SEO):

Optimizing a website to improve its ranking in search engine results. 

Explanation

Artificial Intelligence, Cloud Computing, and Zero-Knowledge technologies are all part of the broader field of IT.

Artificial Intelligence (AI)

Definition: The simulation of human intelligence by machines.

Cloud Computing

Definition: Delivery of computing services (servers, storage, databases, etc.) over the Internet.

Zero-Knowledge (ZK)

Definition: A cryptographic method where one party proves to another that something is true without revealing the actual information.

Explanation

Explanation

A number system that has eight different symbols to represent any quantity is known as Octal.

The Octal number system uses digits from 0 to 7.

It is often used in computing as a simpler alternative to binary representation.

Explanation

In computer science, the levels of representation are typically shown from high-level to low-level as:

• High-level: Software (e.g., C++, COBOL, JAVA)
• Low-level: Hardware (e.g., machine code, assembly language)