Computer General Knowledge Quiz Questions and Answers for Competitive Exams

Correct Answer : C
Explanation :
During DBMS operation, essential files include the data dictionary, containing metadata like table structures, and the transaction log, recording all database transactions. The data dictionary guides the DBMS in understanding database organization, while the transaction log ensures data integrity by recording modifications. Both files are crucial for effective database management, enabling accurate querying, data manipulation, and system recovery in case of failures, ensuring the system's reliability and consistency.

Correct Answer : D
Explanation :
In a hierarchical database model, a parent record type can be associated with one or more child record types, but a child record type can have only one parent. This hierarchical structure is represented as a tree-like schema, where each parent record can have multiple child records, but each child record has only one parent. This model is useful for representing data with hierarchical relationships, such as organizational structures or file systems.

Correct Answer : D
Explanation :

Data that is copied from an application is stored in the clipboard. The clipboard is a temporary storage area in a computer's memory that holds the data that has been cut or copied, allowing users to paste the data into another location or application. This functionality is commonly used for tasks such as copying text, images, or files from one place and pasting them into another.

Correct Answer : A
Explanation :

In MS PowerPoint, the key combination to open the 'Save As' dialog box is F12. Pressing F12 opens the 'Save As' dialog box directly, allowing you to save the current presentation with a new name or in a different location.

Correct Answer : B
Explanation :
RAM (Random Access Memory) is an example of volatile memory. Volatile memory is a type of computer memory that requires power to maintain the stored information. When the computer is powered off or restarted, the data stored in RAM is erased. This is in contrast to non-volatile memory like hard drives or SSDs, where data is retained even when the power is turned off. Volatile memory, such as RAM, provides fast access to data for the computer's processor but does not retain data when the system is powered down.

Correct Answer : D
Explanation :

 A Virtual Private Network (VPN) is a technology that allows users to create a secure and encrypted connection to another network over the internet. VPNs are commonly used to ensure privacy and security when browsing the internet, especially when using public Wi-Fi networks. VPNs create a private tunnel for data transmission, protecting users' online activities from surveillance, censorship, and potential cyber threats.

Correct Answer : C
Explanation :

In Microsoft Word 2019, you can add page numbers to your document by using the "Insert" tab. The "Insert" tab contains various options, including the "Page Number" option, which allows you to insert page numbers at different locations in your document.

Correct Answer : D
Explanation :

The CPU (Central Processing Unit), motherboard, and RAM (Random Access Memory) are internal components of a computer hardware system. These components are essential for the computer to function and are located inside the computer's casing.

Correct Answer : C
Explanation :

Dot matrix printers use printer ribbons. A dot matrix printer is a type of impact printer that produces characters and images on paper by striking a series of dots against an ink-soaked ribbon. The ribbon transfers ink onto the paper to create text and graphics. Dot matrix printers were widely used in the past for tasks such as printing invoices, receipts, and multipart forms.

Correct Answer : D
Explanation :

World Computer Literacy Day is observed on December 2nd every year. It is a global observance aimed at promoting awareness and understanding of computer literacy and digital skills among people, especially those in developing countries, to bridge the digital divide and empower individuals with essential computer knowledge.