Explanation

DBMS is a software system that allows users to create, manage, and manipulate databases.

It ensures data integrity, security, and easy access to data.

Explanation

• An Operating System (OS) is System software.
• It manages hardware resources and provides a platform for running application software.

Functions of an Operating System:

• Allocates resources
• Monitors activities
• Manages disks and files

Explanation

DVR stands for Digital Video Recorders.

They are devices used to record and store video content, as explained by Infiniti Electro-Optics. 

Explanation

NVR (Network Video Recorder) is a device used to record video footage from IP (network) cameras.

It stores and manages surveillance video data digitally over a network.

Explanation

SMS stands for Short message service;

 SMS, is a text messaging service component of most telephone, Internet, and mobile device systems.

SMS was defined in 1986 as part of the Global System for Mobile Communications (GSM)

The first SMS message was sent on 3 December 1992

Explanation

SIM stands for Subscriber Identity Module 

The first SIM card was developed in 1991

It was first invented and manufactured in Munich, by smart-card makers Giesecke and Devrient.

SIM Card used for two passwords:

• PIN  ( Personal Identification Number)
• PUC ( Personal Unblocking Code)

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VU FIA CBT  14-12-2021

Explanation

DEO stands for Data Entry Operator, a person responsible for entering and managing data in computer systems.

This role is essential in offices, organizations, and administrative work for accurate record-keeping.

Explanation

HTTP is a protocol for fetching resources such as HTML documents.

It provides secure communication over a computer network.

 It can also be used to fetch parts of documents to update Web pages on demand.

https://www.google.com is called the URL

Explanation

An Internet service provider is an organization that provides services for accessing, using, or participating in the Internet.

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VU CBT FIA PAPER 13-12-2021

Explanation

ISDN is a set of communication standards for simultaneous digital transmission of voice, video, and data.

It allows faster and more reliable connectivity than traditional analog systems.