Computer Awareness GK Questions with Answers – Page 19

A file with the extension.rar is an archive in which one or more files have been packed and compressed so that they take less space and can be sent as a single unit;.zip,.7z and.tar do the same work.

This combination closes the window or program that is active at the moment, and when it is pressed on the desktop with no program open it brings up the box that shuts down or restarts the computer.

From the 2007 version onwards, MS Office moved to an XML based format in which every main program received an extension ending in the letter x, and a PowerPoint presentation became.pptx, the older format being.ppt.

Selecting a file or folder in Windows and pressing F2 makes its name editable at once, without going through the right click menu.

This combination reverses the last action, whether it was typing, deleting, formatting or moving, and pressing it again walks further back through the list of recent actions.

When a new document is created in MS Word, the program offers a blank document as well as a gallery of templates for letters, resumes and reports, so statement one is correct.

A manual line break, also called a soft return, moves the text to the next line while keeping it inside the same paragraph, so the spacing before and after the paragraph and the list numbering are not disturbed.

A batch file is a plain text file containing a series of commands that the operating system carries out one after another without any further instruction from the user, and it is saved with the extension.bat.

SQL stands for Structured Query Language, and it is used to create tables, insert rows, update and delete data and, above all, to ask questions of a relational database with statements such as SELECT; it is called non-procedural because the programmer states what result is wanted and the database system…

He designed Python in the Netherlands and released the first version in 1991, choosing a syntax with indentation instead of braces so that programs would be easy to read; the name comes from a television comedy series and not from the snake.

HyperText Markup Language uses tags to describe how the content of a web page is arranged, such as headings, paragraphs, lists, tables and images, but it has no variables, no conditions and no loops, so it cannot express logic or take decisions; for that reason it is called a markup…

Machine language is the only language the processor understands directly, because each instruction is a pattern of electrical states that is written as a string of zeros and ones; a program in machine language therefore needs no translation and runs fastest, but it is tied to one processor and is…

The correct answer is B, all of the options, because each of the other three statements is a genuine rule of the language and the question asks which of them apply.

Java has exactly eight primitive data types, namely byte, short, int, long, float, double, char and boolean, and long double is not among them; it belongs to C and C++, where it denotes an extended precision floating point number, so the option is a deliberate trap for candidates who have…

An interpreter reads one statement of the source program, translates it and executes it immediately before moving to the next, so it stops at the first error it meets and tells the programmer about that error alone; this makes it convenient for learning and for testing small pieces of code…

The command javac is the Java compiler: it takes a source file with the extension.java, checks its grammar and converts it into a class file containing bytecode, the intermediate code that any Java Virtual Machine can run.

He created C at Bell Laboratories in the early 1970s and used it to rewrite the UNIX operating system, which is why C is called the mother of system programming languages and still underlies most operating systems.

Its name is short for Formula Translation, it was developed by a team under John Backus at IBM and released in 1957, and it was the first language in which a programmer could write ordinary algebraic formulas instead of machine codes, which is why it is counted as the first…

A blank document in MS Word 2016 opens with the body font Calibri at a size of 11 points.

In the binary system every place stands for a power of two, and 257 is 256 plus 1, that is two raised to the eighth plus two raised to the zero.