Which of the following is NOT an operating system?

(1) UNIX (2) Linux (3) Windows (4) MS Office

Which of the following is one of the primary and direct characteristics of a Digital Signature?

Rich Text Format refers to:

Which of the following examples most appropriately represents the "accuracy" characteristic of the computer?

Match the terms given in List - I with their nature/use in List - II.
List - I: (A) USB, (B) GUI, (C) GIF, (D) OCR
List - II: (I) Linked image objects for program access, (II) Compressed image file format, (III) Scanned text to ASCII conversion, (IV) Serial data transmission for peripherals

Which of the following units generates synchronization signals?

Which of the following options correctly represent the aspect ratio ?

What is the hexadecimal equivalent of the decimal number 23?

Which of the following is NOT an operating system?

(1) UNIX (2) Linux (3) Windows (4) MS Office

 ___________ is referred as a program that is put in someone's computer to secretly gather information about the user and spread it.