Computer Awareness GK Questions with Answers – Page 27

The hexadecimal system has base sixteen, so it needs sixteen symbols for a single place.

A high-level language is written in words close to English and has to be turned into machine code by a compiler or an interpreter, so the programmer need not know the processor at all.

Cache is a small, very fast memory that sits between the processor and the main memory and holds the instructions and data the processor has used most recently.

A port is the socket on a computer where an external device is plugged in, so that the keyboard, mouse, printer, monitor or pen drive can exchange data with the machine.

The Post Office Protocol, best known in its third version POP3, lets a mail client download messages from a mail server, and it works in two modes.

A file with the.tmp extension is a temporary file, created by a program while it is working and normally deleted once the work is done.

The National Digital Library of India is a single window that brings together lakhs of learning resources, from school books to research papers, and lets a student search them free of cost in many Indian languages.

Hexadecimal is base sixteen, so the four places of C3B1 carry the weights 4096, 256, 16 and 1 from left to right, and the letters stand for numbers: A is 10, B is 11, C is 12, D is 13, E is 14 and F is 15.

A toggle key switches a feature on with one press and off with the next, so it has two states and keeps whichever one you left it in.

Unwanted bulk messages sent to many people to advertise something are called spam. Spam usually arrives as e-mail, but the same word is used for unwanted SMS, blog comments and social media messages.

Spooling stands for simultaneous peripheral operations on line. The operating system writes the data meant for a slow device into a queue on the disk and lets the processor go on with other work, while the device picks jobs out of that queue at its own pace.

A word processor is written to do a job the user wants done, namely to create, edit, format and print a document, so it belongs to application software.

A real time system is judged not only by whether it gives the right answer but by whether it gives that answer inside a fixed deadline.

An interpreter reads one statement of the high level program, translates it into machine code and executes it immediately before moving to the next statement.

A warm boot, also called a soft boot, is the restarting of a computer that is already running, usually through the restart option of the operating system or a reset key combination.

The extended file system family, of which ext4 is the widely used member, was written for Linux and is the default arrangement for storing and naming files on a Linux disk.

Deadlock is the state in which every process in a set is waiting for a resource that another process in the same set is holding, so none of them can ever move forward without the operating system stepping in.

UNIX was developed in 1969 at Bell Laboratories by Ken Thompson and Dennis Ritchie, and it became the model for almost every multi user operating system that followed.

In Round Robin scheduling every ready process is given the processor for a fixed period called the time quantum, and when that period expires the process is moved to the back of the queue and the next one is served.

Firmware is software written permanently into a read only memory chip at the time of manufacture.