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CIH, also known as Chernobyl or Spacefiller, is a Microsoft Windows computer virus which first emerged in 1998. It is one of the most damaging viruses, overwriting critical information on infected system drives, and more extensively, in some cases corrupting the system BIOS. The virus was produced by Chen Ing-hau who was a student at Tatung University in Taiwan. 60 million computers were believed to be infected by the virus internationally, resulting in an estimated $1 billion US dollars in commercial damages.
Differentiate between Batch Operating System and Time Sharing Operating System? Batch operating systems : A batch is a sequence of jobs. Such batch is submitted to batch proce
Illustrate the Encryption and Decryption methods One of the best method of ensuring security is to change the form of communication. Let the messages be encoded in such a patte
Tools for Performance Measurement The reason behind these algorithms has been to gain a speed up and improve the performance. After the parallel algorithm has been written and
Q What do you mean by Directives? Assembly languages support numerous statements. This allows you to control the way in which a source program assembles and list. These stateme
Q. Develop a Menu driven program with following menu: 1. Gray code 2. BCD 3. Excess-3 code 4. Exit I/P must be a valid Binary number. Fractional numbers are all
What is the point of the REPLACING option of a copy statement? Ans) REPLACING permits for the similar copy to be used more than once in the similar code by changing the replac
Compare single bus structure and multiple bus structure? A system that having only one bus(i.e only one transfer at a time) is known as a single bus structure. A system is know
"Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the ascii values will starts from
System Software System software is a group of programs written to service another programs. Some system software (e.g., compilers editors and file management utilities) proc
What are the Structural Notations These notations comprise static elements of a model. They are considered as nouns of UML model that could be conceptual or physical. Their ele
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