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Some viruses affect computers as soon as their code is executed; other viruses lie dormant until a pre-determined logical circumstance is met. Identify the virus that modifies the directory table entries so that directory entries point to the virus code instead of the actual program.
Macro Viruses
Cluster Viruses
Encryption Viruses
Boot Sector Viruses

Respuesta :

cheathere

Answer:

Cluster Viruses

Explanation:

  • Cluster Viruses changes the directory entries in the directory table.
  • It changes the directory entry points in the all the programs pointing to the virus.
  • As the directory entry points to virus it starts executing when the actual program is started executing.
  • Cluster in english means a group. It is called a Cluster Virus because it tricks the user into thinking that there are many viruses ( a group of viruses ) . But in reality there is only one virus lying in the system.  
  • Ex : Dir - 2 virus.

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