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
41. Which one of the following protocol is used to receive mail messages?










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Correct Ans:all of the mentioned
Explanation:
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42. SMTP uses the TCP port










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Correct Ans:25
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43. Simple mail transfer protocol (SMTP) utilizes ____ as the transport layer protocol for electronic mail transfer.










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Correct Ans:TCP
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44. What is DHCP snooping?










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Correct Ans:techniques applied to ensure the security of an existing DHCP infrastructure
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45. DHCP client and servers on the same subnet communicate via










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Correct Ans:UDP broadcast
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46. The DHCP server can provide the _______ of the IP addresses.










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Correct Ans:all of the mentioned
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47. DHCP uses UDP port ____ for sending data to the server.










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Correct Ans:67
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48. The DHCP server










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Correct Ans:all of the mentioned
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49. DHCP (dynamic host configuration protocol) provides _____ to the client.










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Correct Ans:IP address
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50. Sniffers can be deployed in










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Correct Ans:All of the mentioned
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51. The DoS attack is which the attacker establishes a large number of half-open or fully open TCP connections at the target host










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Correct Ans:Connection flooding
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52. Which of the following is a form of DoS attack ?










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Correct Ans:All of the mentioned
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53. The attackers a network of compromised devices known as










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Correct Ans:Botnet
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54. When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called










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Correct Ans:DNS spoofing
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55. PGP encrypts data by using a block cipher called










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Correct Ans:international data encryption algorithm
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56. Pretty good privacy (PGP) is used in










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Correct Ans:email security
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57. An attempt to make a computer resource unavailable to its intended users is called










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Correct Ans:denial-of-service attack
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58. In tunnel mode IPsec protects the










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Correct Ans:entire IP packet
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59. IPSec is designed to provide the security at the










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Correct Ans:network layer
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60. Voice privacy in GSM cellular telephone protocol is provided by










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Correct Ans:A5/2 cipher
Explanation:
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