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Science fiction is a form of fiction that deals principally with the impact of actual or imagined science upon society or individuals. Science fiction is based on imagined future scientific or technological advances and major social or environmental changes, frequently portraying space or time travel and life on other planets. Science fiction permeates our world, culture and live. Everyday the fantastic is made fact by the technologies that continually reshape our understanding of all that we experience. New discoveries are always around the corner, which is to say more than simply our context changes, for it changes in radically unanticipated ways. The deep meaningful questions, considered against this dynamic and modern backdrop, that all peoples have historically faced, circle around the subject of just what does it mean to be human. Beyond the humanistic and ethical thrust of this query, the genre of science fiction pushes against, scrambles up, and attempts to climb over
Computer Virus Hits Delhi Varsity
ReplyDeleteA computer is a machine or device that performs processes, calculations and
operations based on instructions provided by a software or hardware program. It
is designed to execute applications and provides a variety of solutions by
combining integrated hardware and software components. A computer virus is a
type of malware that propagates by inserting a copy of itself into and becomes a
part of another program. It spreads from one computer to another, leaving
infections as it travels. Viruses can range in severity from causing mildly
annoying effects to damaging data or software and causing denial of service
(DOS) conditions. Almost all viruses are attached to an executable file, which
means the viruses may exist on a system but will not be active or able to spread
until a user runs or opens the malicious host file or program. When the host code
is executed, the viral code is executed as well. Normally, the host program keeps
functioning after it is infected by the virus. However, Some viruses overwrite
other programs with copies of themselves, which destroys the host program
together. Viruses spread when the software or document they are attached to is
transferred from one computer from another using the network, a disk, file
sharing, or infected e-mail attachments. The virus is spread from one machine to
another by passing on the infected file, perhaps on a flash drive. There are
different types of computer infections, some more common than others. A virus is
a piece of software that attaches itself to another executable program, becoming a
part of the program itself.
Viruses do not evolve by themselves; they must have a creator to write their code
and begin their distribution. Some people psychologically cannot help but to
cause pain to others. They get a thrill out of watching others suffer, especially
when they know it is caused by something they did. Nowadays, virus writers are
likely working with spammers and hackers, turning it into a business instead of a
hobby. These people are in the business to hack into computers and steal
confidential information. Various companies, such as McAfee and Symantec,
have developed antivirus software that tries to prevent or stop attacks on systems.
Around 120 computers connected to the Delhi government’s information
technology network were hit by virus. Many computers linked to district
collectorates across the state were affected by the virus even though no major
data loss was reported.
There are two main techniques used by these programs: they examine files to see
if any compare to files in the virus dictionary, and they identify any suspicious
behavior that is occurring on the computer. With the first technique, if any file
matches one in the virus dictionary, the antivirus software either attempts to repair
the file, quarantines the file, or deletes the file entirely. In order to remain at a
maximum level of effectiveness, antivirus software performs a periodical,
downloadable virus dictionary update. These updates can be scheduled through
the program to automatically look for an update at a specified time.