Data Communication Questions and Answers updated daily – Computer Knowledge
Data Communication Questions: Solved 393 Data Communication Questions and answers section with explanation for various online exam preparation, various interviews, Computer Knowledge Category online test. Category Questions section with detailed description, explanation will help you to master the topic.
Data Communication Questions
61. Which one of the following is a cryptographic protocol used to secure HTTP connection?
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Correct Ans:transport layer security (TLS)
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62. Cryptanalysis is used
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Correct Ans:to find some insecurity in a cryptographic scheme
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63. In cryptography, the order of the letters in a message is rearranged by
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Correct Ans:transpositional ciphers
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64. Which one of the following algorithm is not used in asymmetric-key cryptography?
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Correct Ans:electronic code book algorithm
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65. In asymmetric key cryptography, the private key is kept by
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Correct Ans:receiver
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66. In cryptography, what is cipher?
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Correct Ans:algorithm for performing encryption and decryption
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67. A scatternet can have maximum
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Correct Ans:10 piconets
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68. Bluetooth transceiver devices operate in ______ band.
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Correct Ans:2.4 GHz ISM
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69. What is A2DP (advanced audio distribution profile)?
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Correct Ans:a bluetooth profile for streaming audio
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70. Unauthorised access of information from a wireless device through a bluetooth connection is called
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Correct Ans:bluesnarfing
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71. Bluetooth uses
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Correct Ans:frequency hopping spread spectrum
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72. In a piconet, there can be up to _____ parked nodes in the net.
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Correct Ans:255
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73. An interconnected collection of piconet is called
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Correct Ans:scatternet
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Piconet is the basic unit of bluetooth system having a master node and upto seven active slave nodes.
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74. An ethernet frame that is less than the IEEE 802.3 minimum length of 64 octets is called
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Correct Ans:run frame
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75. What is interframe gap?
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Correct Ans:idle time between frames
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76. The maximum size of payload field in ethernet frame is
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Correct Ans:1500 bytes
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77. A point-to-point protocol over ethernet is a network protocol for
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Correct Ans:encapsulating PPP frames inside ethernet frames
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78. Ethernet in metropolitan area network (MAN) can be used as
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Correct Ans:all of the mentioned
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79. What is autonegotiation?
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Correct Ans:a procedure by which two connected devices choose common transmission parameters
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80. MAC address is of
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Correct Ans:48 bits
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