Computer fundamental MCQ Questions and answers- Technical Aptitude

Encryption : Encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot. Encryption does not itself prevent interference, but denies the intelligible content to a would-be interceptor.

Volatile memory : Volatile memory, in contrast to non-volatile memory, is computer memory that requires power to maintain the stored information; it retains its contents while powered on but when the power is interrupted, the stored data is quickly lost. Volatile memory has several uses including as main memory.

A modern electronic computer is a machine that is meant for Input storage, manipulation of outputting of data. The processor, more formally known as the central processing unit (CPU), has the electronic circuitry that manipulates input data into the information people want.

A graphic tablet (also known as a digitizer, drawing tablet, drawing pad, digital drawing tablet, pen tablet, or digital art board) is a computer input device that enables a user to hand-draw images, animations and graphics, with a special pen-like stylus, similar to the way a person draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures. It can also be used to trace an image from a piece of paper which is taped or otherwise secured to the tablet surface. Capturing data in this way, by tracing or entering the corners of linear poly-lines or shapes, is called Digitizing.

An index register that is automatically incremented or decremented with each use is Auto index.

* A network is a way for computers to connect and share information.
* Packet switching is a method of breaking down data into small pieces called packets before sending them across the network.
These packets are then reassembled at the destination. It's like sending a book page by page instead of the entire book at once. This makes the network more efficient.

Now let's look at the options:

* Ring network, Star network and LAN (Local Area Network) : These describe how computers are connected, but don't inherently tell us if they use packet switching.
* EuroNET: EuroNET was specifically designed as a packet-switching network.
* None of the above: This would only be correct if none of the other options used packet switching.

Therefore, the correct answer is EuroNET because it was designed to use packet switching.

Symbolic languages were developed in 1950. Common Lisp this language is known as the symbolic programming language.

As compared to diskettes, the hard disks are more expensive. A diskette is a RAM, removable data storage medium that can be used with personal computers. It is also known as Floppy or Floppy disk.

Nanocomputer : A nanocomputer is a computer whose physical dimensions are microscopic. The field of nanocomputing is part of the emerging field of nanotechnology .

Minicomputer pioneer and DEC founder Kenneth Olsen dies at 84. Kenneth Olsen, who died at 84 on Sunday, was a natural disruptor in the early days of computing. At Digital Equipment Corp., Olsen's minicomputers undercut the costs of IBM's mainframe computers and carved out a role for smaller, less capable machines.