Basic IT

Option: A
Explanation :Also known as Control A and C-a, Ctrl+A is a shortcut key most often used to select all text, or other objects while in a graphical user environment.

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Option: C
Explanation :Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged in a Linux distribution.

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Option: D
Explanation :BIOS which stands for Basic Input Output System, is software stored on a small memory chip on the motherboard. It’s BIOS that’s responsible for the POST and therefore makes it the very first software to run when a computer is started. The BIOS firmware is non-volatile, meaning that its settings are saved and recoverable even after power has been removed from the device.
BIOS instructs the computer on how to perform basic functions such as booting and keyboard control. BIOS is also used to identify and configure the hardware in a computer such as the hard drive, floppy drive, optical drive, CPU, memory, and related equipment.

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Option: B
Explanation :Microsoft Corporation is an American multinational technology company with headquarters in Redmond, Washington(USA). It develops, manufactures, licenses, supports, and sells computer software, consumer electronics, personal computers, and related services. Its best known software products are the Microsoft Windows line of operating systems, the Microsoft Office suite, and the Internet Explorer and Edge web browsers.

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Option: D
Explanation :In Microsoft Word and other word processor programs, pressing Ctrl+R aligns the line or selected text to the right of the screen.
In Microsoft Outlook, pressing Ctrl+R replies to an e-mail.
In Microsoft PowerPoint, the Ctrl+R shortcut key aligns the line or selected text to the right side of the slide.
In Microsoft Excel and other spreadsheet programs, pressing Ctrl+R fills the row cell to the right with the contents of the selected cell.
In all major Internet browsers (e.g., Chrome, Edge, Firefox, Opera), pressing Ctrl+R refreshes (reloads) the open page.

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Option: D
Explanation :compact discs or CDs can be divided into three main categories. (1)read-only (2) write-once disc (3) Erasable or Rewrite-able CD
(1) Read Only:- These discs you purchase with the data or information already on the compact disk.
The information is placed on the compact disk at the time the disc is manufactured. All you can do with the disc is play or read it.
(2) Write Once Disc:- This compact disc is also known as the recordable CD or CD-R. This disc is purchased blank and information can be written or recorded to the disc. Once the disc is full, it essentially becomes a read-only disc because no more information can be recorded to the disc and the previously recorded information cannot be erased and the compact disc cannot be reused.
(3) Erasable or Rewrite-able CD:- The third type of compact disc is the erasable or rewriteable CD known as the CD-RW. This disc is also purchased blank. Information can be written to the disc and then this information can be erased and the compact disk reused.

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Option: A
Explanation :Ctrl+Alt+F4:-have no generic description for this shortcut.
Alt+F4:- is a shortcut key most often used to close the current active window all programs. For example, if you pressed the shortcut key now while reading this page on your computer browser, it would close the browser window and all open tabs.
Ctrl+F4:- In Microsoft Windows, pressing Ctrl+F4 will close the active tab or window in a program that supports more than one tab or window to be opened.

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Option: D
Explanation :Main Task of Educational Computer are preserve the information, analysis of data, scoring the answer, enhances creativity & thinking skills, efficient & better use of IT Technology, improves research work & helps in communicating with different education providers, huge & organized store of information, quick processing of data, audio-visual guides in teaching process for a viable learning.

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Option: C
Explanation :A smart card, chip card, or integrated circuit card (ICC) is a physical electronic authorization device, used to control access to a resource. It is typically a plastic credit card sized card with an embedded integrated circuit. Many smart cards include a pattern of metal contacts to electrically connect to the internal chip. Others are contactless, and some are both. Smart cards can provide personal identification, authentication, data storage, and application processing.
Applications include identification, financial, mobile phones (SIM), public transit, computer security, schools, and healthcare. Smart cards may provide strong security authentication for single sign-on (SSO) within organizations. Several nations have deployed smart cards throughout their populations.

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Option: D
Explanation :Phishing is a form of fraud in which an attacker masquerades as a reputable entity or person in email or other communication channels. The attacker uses phishing emails to distribute malicious links or attachments that can perform a variety of functions, including the extraction of login credentials or account information from victims.
Phishing is popular with cybercriminals, as it is far easier to trick someone into clicking a malicious link in a seemingly legitimate phishing email than trying to break through a computer’s defenses.

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