IT &computer MCQ section 7 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (c)

A software bug is an error, flaw, mistake, failure, or fault in a computer program or system that produces an incorrect or unexpected result, or causes it to behave in unintended ways.

Most bugs arise from mistakes and errors made by people in either a program's source code or its design, and a few are caused by compilers producing incorrect code.

Answer: (a)

ODBC : Open Database Connectivity

Answer: (b)

LOGO is a computer programming language used for functional programming, and is used for generating basic shapes using a turtle cursor. It was developed for children experimenting their first programming steps. It guides kids step by step with the basics of computers programming.

Answer: (b)

Primary Key is a column or a combination of columns that uniquely identify a record. Only one Candidate Key can be Primary Key. For a Candidate Key to qualify as a Primary Key, it should be unique and non-null. So, basically a primary key is just one of the candidate keys, which is a just a minimal super key.

Answer: (b)

The acronym PDA stands for Personal Digital Assistant. Also known as a handheld PC, or personal data assistant, it is a mobile device that functions as a personal information manager.

The term evolved from Personal Desktop Assistant, an application that prompts or prods the user of a computer with suggestions or provides a quick reference to contacts and other lists.