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Question 25: A communications device that combines transmissions from several I/O devices into one line is a

Question 24: Most data communications involving telegraph lines use:

Question 23: Which of the following types of channels moves data relatively slowly?

Question 22: What is the minimum number of wires needed to send data over a serial communication link layer?

Question 21: Which data communication method is used to transmit the data over a serial communication link?

Question 20: The transmission signal coding method of TI carrier is called

Question 19: Which of the following is required to communicate between two computers?

Question 18: Which of the following is an advantage to using fiber optics data transmission?

Question 17: Which of the following statement is incorrect?

Question 16: Which of the following signal is not standard RS-232-C signal?

Question 15: Which of the following does not allow multiple uses or devices to share one communication line?

Question 14: Which of the following is not a transmission medium?

Question 13: Which of the following is considered a broad band communication channel?

Question 12: Which of the following statement is incorrect?

Question 11: The interactive transmission of data within a time sharing system may be best suited to

Question 10: What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard?

Question 9: Which of the following might be used by a company to satisfy its growing communications needs?

Question 8: Which of the following communication modes support two-way traffic but in only one direction at a time?

Question 7: The x.25 standard specifies a

Question 6: Layer one of the OSI model is

Question 5: How many OSI layers are covered in the X.25 standard?

Question 4: The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as:

Question 3: Which of the following performs modulation and demodulation?

Question 2: In OSI network architecture, the routing is performed by________

Question 1: In OSI network architecture, the dialogue control and token management are responsibility of

Question 26:How much power (roughly) a light emitting diode can couple into an optical fiber?

Question 27: The synchronous modems are more costly than the asynchronous modems because------

Question 28: Which of the following statement is correct?

Question 29: In a synchronous modem, the digital-to-analog converter transmits signal to the

Question 30: Which of the following communications lines is best suited to interactive processing applications?

31. If a computer on the network shares resources for others to use, it is called ____

32. Terminators are used in ______ topology

33. In _____ topology, if a computer’s network cable is broken, whole network goes down.

34. For large networks, _______ topology is used

35. ISO stands for_______

36. ISO OSI model is used in_______

37. Network cable lies on _____ layer

38. ____ layer decides which physical pathway the data should take.

39. ISDN is an example of ______ network

40. X.25 is an example of ______ network

41. _____________ allows LAN users to share computer programs and data.

42. Print server uses ________ which is a buffer that holds data before it is send to the printer

43. A standalone program that has been modified to work on a LAN by including concurrency controls such as file and record locking is an example of____

44. The ______ portion of LAN management software restricts access, records user activities and audit data etc

45. What is the max cable length of STP?

46. What is the max data capacity of STP?

47. Which connector STP uses?

51. Connectivity is a concept related to _____

52. One of the most dramatic changes in connectivity and communications in the past five years has been _______ _.

53. The four basic elements of any communication system include ________

54. An older type of data communications channel, using multiple copper wires, is called ________ technology.

55. A communications channel that is made up of a single copper core with a ground sheath around it is called a ________.

56. Data is transmitted using light through a(n) ________ cable.

57. Which physical connection is the fastest?

58. Communication in a straight line is accomplished using ________.

59. Most Web-enabled devices follow a standard known as______

60. Bluetooth is a type of radio wave information transmission system that is good for about_____

48. What is the central device in star topology?

49. What is max data capacity for optical fiber cable?

50. Which of the following architecture uses CSMA/CD access method?


1.Each question carries one mark

2.Don't mark multiple answers

3.Time allotted for this exam is 90 minutes

4. Don't use internet facilities

5. Don't go forward and backward unnecessary

6.Don't leave any questions blank

7. There is no negative mark

8.Answer all the questions.

9. All the Best.

10.If you have any doubts contact to my mail Id ; professionalkarthick41@gmail.com

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