computer networks interview questions

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C Questions

1. What do you mean by data communication?
2. What is simplex?
3. What is half-duplex?
4. What is full duplex?
5. What is a network?
6. What is distributed processing?
7. What is point to point connection?
8. What is multipoint connection?
9. What is a topology?
10. Define LAN, MAN and WAN.
11. Define internet?
12. What is a protocol?
13. What is TCP/IP protocol model?
14. Describe the functions of five layers?
15 What is ISO-OSI model?
16. What is multiplexing?
17. How data is transmitted over a medium?
18. Compare analog and digital signals?
19. Define bandwidth?
20. What are the factors on which data rate depends?
21. Define bit rate and bit interval?
22. What is Nyquist bit rate formula?
23. Define Shannon Capacity?
24. What is sampling?
25. Define pulse amplitude modulation?
26. Define pulse code modulation?
27. What is Nyquist Theorem?
28. What are the modes of data transmission?
29. What is Asynchronous mode of data transmission?
30. What is Synchronous mode of data transmission?
31. What are the different types of multiplexing?
32. What is FDM?
33. What are the different transmission media?
34. What are the different Guided Media?
35. Describe about the different Guided Medias.
36. What do you mean by wireless communication?
37. What do you mean by switching?
38. What are the switching methods?
39. What are the duties of data link layer?
40. What are the types of errors?
41. What do you mean by redundancy?
42. Define parity check.
43. Define cyclic redundancy check (CRC).
44. What is hamming code?
45. What do you mean by flow control?
46. What do you mean by error control?
47. Define stop and wait ARQ.
48. Define Go-Back-N ARQ?
49. Define Selective Repeat ARQ?
50. What do you mean by pipelining, is there any pipelining in error control?
51. What is HDLC?
52. What do you mean by point to point protocol?
53. What do you mean by point to point protocol stack?
54. What do you mean by line control protocol?
55. What do you mean by Authentication protocol?
56. What do you mean by network control protocol?
57. What do you mean by CSMA?
58. What do you mean by Bluetooth?
59. What is IP address?
60. What do you mean by subnetting?
61. What are the advantages of fiber optics cable ?
62. What are the disadvantages of fiber optics cable?
63. What are the propagation type of radio wave ?
64. What do you mean by Geosynchronous Satellites ?
65. What are the factors for evaluating the suitability of the media ?
66. What do you mean by medium access control (MAC) sublayer.
67. What do you mean by ALOHA ?
68. What is pure ALOHA ?
69. What is slotted ALOHA?
70. What do you mean by persistent CSMA (carrier sense multiple access) ?
71. What do you mean by non persistent CSMA (carrier sense multiple access) ?
72. What do you mean by p persistent CSMA (carrier sense multiple access) ?
73. What is FDDI ?
74. What is Firewalls?
75. What is Repeaters ?
76. What is Bridges ?
77. What is Routers ?
78. What is Gateway ?
79. What do you mean by Data Terminal Equipment (DTE) ?
80. What do you mean by Data Terminating Equipment (DCE) ?
81. What do you mean by protocol stack ?
82. What do you mean by peer ?
83. What do you mean by broadcasting ?
84. What are the advantages of broadcast network.
85. What do you mean by point to point network?
86. What are the design issue of layers ?
87. What are the protocols in application layer ?
88. What are the protocols in transport layer ?
89. Define TCP ?
90. Define UDP ?
91. Define IP ?
92. What do you mean by client server model ?
93. What are the information that a computer attached to a TCP/IP internet must possesses ?
94. What is domain name system (DNS)?
95. What is TELNET ?
96. What do you mean by local login and remote login ?
97. What is Network Virtual Terminal ?
98. What do you mean by Simple Mail Transfer Protocol ?
99. What is Hypertext Transfer Protocol (HTTP) ?
100. What is URL ?
102. What is HTML ?