Question Discussion & Solution

The correct answer is Ctrl + D.

Key Points

• Use the Ctrl+D keyboard shortcut to quickly summon the Font dialog box.
• The best benefit of the Font dialog box is its Preview window, at the bottom.
• This window shows you exactly how your choices affect text in your document.
• The Font names +Body and +Heading refer to the fonts selected by the current document theme.

Additional Information

• Important Shortcut keys:
  • Cut the selected content to the Clipboard - Ctrl+X
  • Copy the selected content to the Clipboard - Ctrl+C
  • Paste the contents of the Clipboard -Ctrl+V
  • Increase the font size by 1 point.- Ctrl+]
  • Center the text - Ctrl+E.
  • Align the text to the left - Ctrl+L

The correct answer is Kernel.​Key Points

• The kernel is an essential center of a computer operating system.
• It is the core that provides basic services for all other parts of the operating system. 
• It is the main layer between the OS and hardware.
• Kernel helps in the process and memory management, file systems, device control, and networking.
• It is the first program after bootloader which is loaded and controls everything in the OS.
• It acts as an interface between application and hardware.
  It is responsible for memory management.
• There are five types of the kernel:
  • A microkernel
    • It only contains basic functionality
  • A monolithic kernel.
    • It contains many device drivers
  • Hybrid Kernel
  • Exokernel
  • Microkernel

The correct answer is Write-Once Read-Many.

Key Points

• CDs are also known as WORM discs, for “Write Once Read Many.”
• A rewritable version based on excitable crystals and known as CD-RW was introduced in the mid-1990s.
• In computer storage media, WORM (write once, read many) is a data storage technology that allows information to be written to a disc a single time and prevents the drive from erasing the data.

Additional Information

Some important abbreviations used in Computer:

• BIOS - Basic Input Output System
• CAD - Computer-Aided Design
• EDVAC - Electronic Discrete Variable Automatic Calculator
• EPROM - Erasable Programmable Read-Only Memory
• FORTRAN - FORmula TRANslation
• GPRS - General Packet Radio Service 

The correct answer is Machine Language.

Key Points

• Low-level languages are also known as Machine Language.
• A low-level programming language is a programming language that provides little or no abstraction from a computer's instruction set architecture commands or functions in the language map closely to processor instructions.
• Generally, this refers to either machine code or assembly language.

Additional Information

• Examples of low-level programming languages:
  • C and C++ are now considered low-level languages because they have no automatic memory management. 
• Low-level languages were developed first, and high-level languages came along later.
• High-level languages are more easily understood by humans mostly coding languages like Java.

The correct answer is Computer program.

Key Points

• A computer virus is similar to a flu virus, is sketched to spread from host to host and has the ability to replicate itself.
• In more practical terms, a computer virus is a type of malevolent code or program written to alter the way a computer operates and is designed to spread from one computer to another.
• A virus is corporate by inserting or attaching itself to a lawful program or document that supports macros in order to execute its code.
• In the procedure, a virus has the prospective to cause unannounced or damaging effects, such as harming the system software by corrupting or destroying data.

Additional Information

• Common types of Computer Viruses are:
  • File Infecting Virus
  • Macro Virus
  • Browser Hijacker
  • Web Scripting Virus
  • Boot Sector Virus
  • Polymorphic Virus
  • Resident Virus
  • Multipartite Virus.