71. Which of the following is an advantage to using fibre optics data transmission ?

1. 1. Resistance to data theft

   
   
   

   2. Fast data transmission rate

   
   
   

   3. Low noise level

   
   
   

   4. All of the above

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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72. Which of the following is the fastest communication channel ?

1. 1. Radiowave

   
   
   

   2. Micro wave

   
   
   

   3. Optical fibre

   
   
   

   4. All are operating at nearly the same propagation speed

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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73. What is the function of a modem ?

1. 1. Encryption and decryption

   
   
   

   2. Converts data to voice

   
   
   

   3. Converts analog singals to digitals and vice-versa

   
   
   

   4. Serve as a hardware anti virus

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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74. Networking using fibre optic cable is done as

1. 1. it has high bandwidth

   
   
   

   2. it is thin and light

   
   
   

   3. it is not affected b y electromagnetic

   
   
   

   4. All of the above

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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75. The first network that has planted the seeds of Internet was

1. 1. ARPANET

   
   
   

   2. NSFnet

   
   
   

   3. V-net

   
   
   

   4. I-net

   
   
   

   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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