In C language, variable names can only contain letters (A-Z, a-z), digits (0-9), and underscores (_). The dot (.) operator cannot be used in a variable name, so 'St.Name' is an invalid name.

Java is the most popular language for developing multimedia webpages, websites, and web-based applications.

A pointer is a variable that holds the memory address of other variables. Pointers are used to store the address of variables.

The full form of D.O.S. is Disk Operating System - DOS. This is a single-user operating system, which works on a command base. It is a Closed Source OS which was developed by IBM and Microsoft in 1981.

Microsoft Word, Adobe Photoshop, and Microsoft Power Point are types of application software. Windows-7 is a system software.

In C++, the fields (data members) of a class are private by default.

C is a general-purpose high-level programming language. It was developed to increase the capability of assembly language within a high-level language. It is a language used for general tasks. The UNIX operating system is the first important program written in C language.

Versions after Windows 98 already included networking capabilities (built-in).

DOS (Disk Operating System) commands are used to give instructions to the computer to perform tasks.

A compiler translates high-level programming language into machine language.

A constructor is a special member function that is called when an object of a class is created or declared.

According to the book, the answer is (1), although technically this is called a binary system.

FORTRAN (Formula Translator) was developed for scientific and engineering calculations.

In MS Paint, files are saved in .BMP (Bitmap) format by default.

In MS-DOS, MKDIR (Make Directory) is used for a specific type of files where the file name and inode are stored.

The Linux operating system was developed by Linus Torvalds. Its first version was introduced in 1991. It is an open-source operating system. In open-source operating systems, the kernel or source code is available to everyone, and anyone can modify and use it according to their needs. No one has proprietary rights over this operating system, and the user does not have to pay any fee.

Mnemonics are used in assembly language instead of binary code (0 and 1).

Prolog (PROLOG - Programming in Logic) is a logic programming language.

During POST (Power-On Self-Test), 100-series error codes typically indicate problems with the system board or motherboard.

Shell is a key component of the Unix operating system that acts as an interface between the user and the kernel.