Managers at a consumer products company purchased personal computer software from only recognized vendors and prohibited employees from installing nonauthorized software on their personal computers. To minimize the likelihood of computer viruses infecting any of its systems, the company should also:
Answer(s): D
Software from recognized sources should be tested in quarantine for example, in a test development machine or a stand-alone personal computer) because even vendors applied software may be infected with viruses. The software should be run with a vaccine program and tested for the existence of logic bombs, etc.
Which of the following operating procedures increases an organization's exposure to computer viruses?
Answer(s): C
Viruses are spread through shared data. Downloading public-domain so are carries la risk that contaminated data may enter the computer.
An organization installed antivirus software on all its personal computers. The software was designed to prevent initial infections, stop replication attempts, detect infections after their occurrence, mark affected system components, and remove viruses from infected components. The major risk in relying on antivirus software is that antivirus software may:
Answer(s): A
Antivirus software designed to identify and remove known viruses is sometimes know as a vaccine. A vaccine works only for known viruses and may not be effective for variants of those viruses or new viruses.
What is the best course of action to take if a program takes longer than usual to load or execute?
The described condition is a symptom of a virus. Many viruses will spread and cause additional damage. Use of an appropriate antivirus program may identify and even eliminate a viral infection Ways to minimize computer virus risk in a networked system include restricted access, regularly updated passwords, periodic testing of systems with virus detection software, and the use of antivirus software on all shareware prior to introducing it into the network.
Six months after a disgruntled systems programmer was fired and passwords disabled, the company's mainframe computer was brought to a halt when it suddenly erased all of its own files and software. The most likely way the programmer accomplished this was by:
Viruses are a form of computer sabotage. They are programs hidden within other programs that have the capacity to duplicate themselves and infect other systems. Sharing of storage media or participation in computer networks creates exposure to viruses. Viruses may result in actions ranging from harmless pranks to erasure of files and programs. A back door is a shortcut created in an operating system that permits a programmer simple access to the system.
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