26. .......are often delivered to a PC through an mail attachment and are often designed to do harm.

1. 1. Portals

   
   
   

   2. Spam

   
   
   

   3. Viruses

   
   
   

   4. Other than those given as options

   
   
   

   5. E-mail messages

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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27. A computer virus normally attaches itself to another computer program known as a

1. 1. host program

   
   
   

   2. target program

   
   
   

   3. backdoor program

   
   
   

   4. Bluetooth

   
   
   

   5. Trojan horse

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   NA

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28. If you are allowing a person on the network based on the credentials to maintain the security of your network, then this act refers to the process of

1. 1. Authentication

   
   
   

   2. Automation

   
   
   

   3. Firewall

   
   
   

   4. Encryption

   
   
   

   5. Decryption

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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29. Which virus spreads in application software ?

1. 1. Macro virus

   
   
   

   2. Boot virus

   
   
   

   3. File virus

   
   
   

   4. Antivirus

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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30. A ....... is a small program embedded inside of a GIF image.

1. 1. Web bug

   
   
   

   2. cookie

   
   
   

   3. spyware application

   
   
   

   4. spam

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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