Software & Operating Systems — Computer Awareness

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Software & Operating Systems

2 questions

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Q.1

WBCS Prelims 2018

Which among the following is commonly used language in Android applications?

A. Java

B. C++

C. C

D. PHP

Explanation

Why Correct: Java has been the primary and most widely used programming language for Android app development since Android's inception, with official support through Android SDK and extensive documentation.
Distractor Analysis: C++ is used for performance-critical components like game engines through the Android NDK but not for general app development. C is a low-level systems programming language rarely used directly for Android apps. PHP is a server-side scripting language for web development, not for mobile app programming.
Takeaway: Kotlin became an officially supported language for Android development in 2017 and is now Google's preferred language, though Java remains widely used in legacy codebases.

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Q.2

WBCS Prelims 2018

Errors in computer programme is called

A. Spam

B. Follies

C. Virus

D. Bugs

Explanation

Why Correct: Bugs are errors, flaws, or faults in computer programs that cause incorrect or unexpected results or cause programs to behave in unintended ways.
Distractor Analysis: Spam refers to unsolicited bulk electronic messages, typically email advertisements. Follies is not a standard computing term for errors. Viruses are malicious software programs that replicate themselves and spread to other computers.
Takeaway: The term 'bug' originated in 1947 when engineers found a moth causing a malfunction in the Harvard Mark II computer, with the moth taped to the logbook entry stating 'First actual case of bug being found.'

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