Computer Science

A worm is a type of malware that can replicate itself and spread independently without needing to attach to a host file, unlike viruses such as macro viruses which require a host file to propagate.

A Trojan Horse is a type of malware that disguises itself as legitimate software to trick users into installing it. The other options are unrelated to malware types.

A File Infector Virus specifically attaches itself to executable files and spreads when the infected program is run. Worms, spyware, and adware do not typically attach to executable files in this manner.

A firewall is used to protect a network server by controlling incoming and outgoing network traffic based on predetermined security rules, thereby preventing unauthorized access and potential damage from users who log in.

Encryption is the process of converting data from a readable form (plaintext) into an encoded version (ciphertext) to protect its confidentiality. This matches the description in the question.

The 'Brain Virus' was created by two Pakistani brothers, Basit and Amjad Farooq Alvi, making Pakistan the correct answer.

A computer can affect system files, software, and the hard drive through operations like reading, writing, and executing. However, it cannot directly affect the physical hardware of the mouse and keyboard, which are input devices external to the computer's internal processing capabilities.

WhatsApp, YouTube, and Skype all support showing videos and documents in various ways. WhatsApp allows sharing and viewing of videos and documents directly in chats, YouTube is primarily for videos, and Skype supports video calls and file sharing. Therefore, all of these platforms can show videos, documents, and files.

UC Browser was developed by UCWeb, which is a subsidiary of Alibaba Group. Therefore, the correct answer is Alibaba Group.

Internet Explorer is a web browser developed by Microsoft, not Chrome or an email client. Therefore, it is not a Chrome browser or an email browser. Among the given options, 'None of these' is the correct choice.

FileZilla is an FTP client used for transferring files over the internet, not a web browser. Firefox and Safari are both well-known internet browsers, so the correct answer is FileZilla.

ChatGPT was developed by OpenAI, which was co-founded by Sam Altman, Elon Musk, and John Schulman among others. John Schulman is a key figure in OpenAI's founding team, making option B correct.

Google is the largest and most widely used search engine on the internet, surpassing others like MSN and Yahoo in market share and usage.

Eric Yuan founded Zoom Video Communications in 2011, which is known for its video conferencing platform. The other individuals listed are founders of different companies or technologies.

Life360 is a location tracking app designed to show the real-time location of family members and close contacts, making it the correct choice for this question.

YouTube was founded in 2005 by the trio Steve Chen, Chad Hurley, and Jawed Karim. The other options list founders of different tech companies: WhatsApp, Amazon/Google, and Instagram/Twitter respectively.

Netscape Navigator, which was a successor to the Mosaic web browser, was launched in 1994. This marked a significant development in web browsing technology during the early internet era.

Twitter was founded in 2006 by Jack Dorsey, Biz Stone, Noah Glass, and Evan Williams, making option A the correct answer. The other options list founders of different companies or platforms.

WebCrawler was the first full-text search engine for the web, launched on April 20, 1994. AltaVista was launched later in December 1995. Yahoo started as a directory in 1994 and added search in 1995, while MSN Search was launched in 1998. Therefore, WebCrawler is the oldest among the given options as an Internet search engine.

Wikipedia was founded in 2001 by Jimmy Wales and Larry Sanger, making option A the correct answer. The other options refer to founders of different companies: Larry Page & Sergey Brin founded Google, Steve Jobs & Steve Wozniak founded Apple, and Kevin Systrom & Mike Krieger founded Instagram.

Blockchain technology is primarily used in cryptocurrency to securely record transactions in a decentralized ledger, ensuring transparency and immutability.

Yahoo was launched in 1994, making it older than Google (1998), Bing (2009), and DuckDuckGo (2008). Therefore, Yahoo is the oldest search engine among the options provided.

Hotmail, one of the first web-based email services, was founded in 1996 by Sabeer Bhatia and Jack Smith before being acquired by Microsoft. The other options refer to founders of different tech companies.

Baidu is widely recognized as China's largest search engine company, and it developed the Baidu Browser. The other options incorrectly identify Baidu's origin and industry.

WhatsApp was founded in 2009 by Jan Koum and Brian Acton, both former employees of Yahoo. They created the app as a messaging platform that quickly gained worldwide popularity.