Data Communication Questions and Answers updated daily – Computer Knowledge


Data Communication Questions and Answers updated daily – Computer Knowledge



193 Data Communication Questions and answers section with explanation for various online exam preparation, various interviews, Computer Knowledge Data Communication online test. Data Communication Questions with detailed description, explanation will help you to master the topic.

Data Communication Questions

1. Stephanie is in charge of a small network and wants to make it simple but secure. The users want to have full control over their data and still be able to share data with the rest of the office. The networking knowledge of the office staff is basic. Which network(s) would be the best for Stephanie to set up?



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Correct Ans:Server-based
Explanation:


2. Four bits are used for packet sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size?



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Correct Ans:15
Explanation:


3. Which of the following communications service provides message preparation and transmission facilities?



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Correct Ans:Teletex
Explanation:


4. If you configure the TCP/IP address and other TCP/IP parameters manually, you can always verify the configuration through which of the following? Select the best answer.



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Correct Ans:Network Properties dialog box
Explanation:


5. Which of the following files is used for NetBIOS name resolution?



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Correct Ans:LMHOSTS
Explanation:


6. You are working with a network that is 172.16.0.0 and would like to have the maximum number of hosts per subnet. This assumes support for eight subnets. What subnet mask should you use?



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Correct Ans:255.255.240.0
Explanation:


7. You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports four subnets and a maximum number of hosts?



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Correct Ans:255.255.255.224
Explanation:


8. HDLC (High-level Data Link Control) is



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Correct Ans:a very common bit-oriented data link protocol issued by ISO.
Explanation:


9. Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?



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Correct Ans:Electronic mail
Explanation:


10. You are working with a network that has the network ID 192.168.10.0 and require nine subsets for your company and the maximum number of hosts. What subnet mask should you use?



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Correct Ans:255.255.255.240
Explanation:


11. You have a network ID of 192.168.10.0 and require at least 25 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign?



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Correct Ans:255.255.255.224
Explanation:


12. The signal to noise ratio for a voice grade line is 30.1 dB (decibels) or a power ratio of 1023:1. The maximum achievable data rate on this line whose spectrum ranges from 300 Hz to 4300 Hz is



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Correct Ans:31000 bps
Explanation:


13. Because the configuration information for a DHCP client is received dynamically, you must use which utility to read the current configuration to verify the settings?



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Correct Ans:IPCONFIG
Explanation:


14. Many data communication networks have been established which provide a wealth of on-demand information services to people at home. What is the name of the system which provides an interactive, graphics-rich service that permits user to select what they want?



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Correct Ans:Videotex system
Explanation:


15. What is the first octet range for a class C IP address?



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Correct Ans:192 - 223
Explanation:


16. How many digits of the Network User Address are known as the DNIC (Data Network Identification Code)?



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Correct Ans:first four
Explanation:


17. You have a network ID of 134.57.0.0 and you need to divide it into multiple subnets in which at least 600 host IDs for each subnet are available. You desire to have the largest amount of subnets available. Which subnet mask should you assign?



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Correct Ans:255.255.255.0
Explanation:


18. Which of the following technique is used for Time-To-Line (TTL)?



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Correct Ans:a technique used in best-effort delivery system to avoid endlessly looping packets.
Explanation:


19. Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:



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Correct Ans:Virtual Private Network
Explanation:


20. If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is



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Correct Ans:3200 bands
Explanation:



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