Computer & IT

note!Answer: A) Switching mode power supply
SMPS means Switched Mode Power Supply, a compact and efficient type of power supply used in computers.

note!Answer: C) Utility software
Antivirus software is classified as utility software because it helps maintain and protect a computer system by detecting, preventing, and removing malware.

note!Answer: A) Super computer
Computers are commonly classified by the type of data they process into three basic types: Analog, Digital, and Hybrid computers. A supercomputer is classified by its processing power, not by this data-processing classification.

note!Answer: A) Software
Software provides the instructions and interface that allow users to interact with the computer’s CPU and other hardware. It acts as a link between the user and the computer system.

note!Answer: D) Optical
DVDs store data using lasers on a reflective surface, which makes them optical discs.

note!Answer: A) Keyboard
A keyboard is a manual-entry input device because users type data by pressing keys. A scanner, barcode reader, and OMR (Optical Mark Recognition) device are classified as direct-entry input devices because they capture data directly from documents or printed markings.

note!Answer: B) 2GL
Mnemonic codes are short symbolic names for instructions, used in second generation (assembly) languages.

note!Answer: A) Laser
Laser printers produce the sharpest, highest-quality printed graphics among the options.

note!Answer: D) 127
A traditional USB bus supports a maximum of 127 device addresses (including the hub/root-hub addressing convention) on a single USB host/controller hierarchy.

note!Answer: D) All of the above
A computer system consists of hardware, software and human ware (users).

note!Answer: C) Bus
A bus is a set of parallel wires that connects hardware components inside a computer.

note!Answer: B) IC
Integrated circuits (ICs) defined the third generation of computers, starting around 1964.

note!Answer: D) IBM and IBM compatible
IBM PCs and IBM-compatible PCs share the same architecture, unlike Apple Macintosh systems.

note!Answer: A) Function keys
Function keys (F1 to F12) can be programmed to perform special tasks in software.

note!Answer: C) First generation second generation of computer
UNIVAC (Universal Automatic Computer) was one of the earliest commercial computers. The UNIVAC I was delivered in 1951 and used vacuum tubes, which are characteristic of first-generation computers.

note!Answer: C) Using UPS
A UPS (Uninterruptible Power Supply) supplies battery power during an outage, allowing safe shutdown.

note!Answer: B) Windows vista
Among the listed systems, Windows Vista (2007) is the most recent, after XP, 98 and DOS.

note!Answer: D) All of the above
Computers are diligent, automatic and non-intelligent (they only follow instructions), so all options describe them.

note!Answer: B) MHZ
CPU clock speed is measured in megahertz (MHz) or gigahertz (GHz).

note!Answer: D) Placed between the main memory and microprocessor
Cache memory is a small, fast memory placed between the main memory and the microprocessor to speed up access.