Question Discussion & Solution

The correct answer is PayTm.

• Facebook is an American social media platform.
• Products owned by Facebook are. Instagram, Messenger, WhatsApp, Oculus VR.
• Facebook acquired Instagram in 2012.
• Instagram was founded by Kevin Systrom and Mike Krieger
• Twitter is an American social networking service provider.
  • Parent company: Odeo.​
  • Twitter was founded by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams
• Paytm is an Indian multinational technology company that specializes in digital payment systems.
  • Hence PayTm is the answer.

The correct answer is (i) only.

Key Points

• CD-R stands for Compact Disk-Recordable.
• CD-RW stands for Compact Disk-ReWritable.
• CD-RW disks are expensive than CD-R disks.
• CD-R (COMPACT DISC – Recordable) is a digital optical disc storage format.
• A CD-R disc is a compact disc that can be written once and read arbitrarily many times.
• CD-R discs (CD-Rs) are readable by most plain CD readers.

Additional Information

• A Compact Disc Recordable (CD-R) is a Write Once Read Multiple (WORM) disc.
• These discs can only record data once and then the data becomes permanent on the disc.
• A Compact Disc Re-Writable (CD-RW) is an erasable disc that can be reused. 
• A CD-R is typically 700 MB of memory.

The correct answer is Margins.

Key Points

• A margin is a space separating text or other elements from the edge of the paper commonly adjusted through the page setup.
• Most programs allow for the top, bottom, left, and right margins to be set. 
• By increasing the size of the margins, you decrease the available space on the page that text can occupy.
• In other words, a page with bigger margins has less room for text.
• If you decrease the size of the margins, the page can accept more text.

Additional Information

• Justify is a text that is both left-aligned and right-aligned. 
  • In Microsoft Word, you can use the Ctrl + J keyboard shortcut to justify any text.
• A trapdoor is a concealed means of bypassing security to gain access to a restricted part of a computer system.
  • For example, a programmer may insert a piece of code that would allow them access to a computer or secure area using a password that only they know.

The correct answer is an operating system.

• Linux is an operating system.

Key Points

• Linux was created in 1991 by  Linus Torvalds and the Free Software Foundation (FSF).
  • It is an open-source Unix-like operating system.
  • An operating system help users interact with the computer.

Additional Information

• Machine language and Assembly language are an example of a low-level language.
  • Machine language is a low-level language that is comprised of binary digits i.e. ones and zeros. 
  • An assembly language is a language designed for a specific type of processor.

The correct answer is PDF.

Key Points

• Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1993 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.
• Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images, and other information needed to display it. 

Additional Information

• DOC is the official document file used in Microsoft Word.
• A DOC file contains text, images, and graphs.
• It can be opened by many different programs and users can change printing options once it's opened.
• A TXT file is a standard text document that contains plain text.