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Networking Interview Questions

Top Networking interview questions

  1. What are 10Base2, 10Base5 and 10BaseT Ethernet LANs ?
  2. What is the difference between an unspecified passive open and a fully specified passive open
  3. Explain the function of Transmission Control Block
  4. What is a Management Information Base (MIB)
  5. What is anonymous FTP and why would you use it?
  6. What is a pseudo tty?
  7. What is REX?
  8. What does the Mount protocol do ?
  9. What is External Data Representation?
  10. What is the Network Time Protocol?
  11. What is a DNS resource record?
  12. What protocol is used by DNS name servers?
  13. What is the difference between interior and exterior neighbor gateways?
  14. What is the HELLO protocol used for?
  15. What are the advantages and disadvantages of the three types of routing tables?
  16. What is source route?
  17. What is RIP (Routing Information Protocol)?
  18. What is SLIP (Serial Line Interface Protocol)?
  19. What is Proxy ARP?
  20. What is OSPF?
  21. What is Kerberos?
  22. What is a Multi-homed Host?
  23. What is NVT (Network Virtual Terminal)?
  24. What is Gateway-to-Gateway protocol?
  25. What is BGP (Border Gateway Protocol)?
  26. What is autonomous system?
  27. What is EGP (Exterior Gateway Protocol)?
  28. What is IGP (Interior Gateway Protocol)?
  29. What is Mail Gateway?
  30. What is wide-mouth frog?
  31. What are Digrams and Trigrams?
  32. What is silly window syndrome?
  33. What is region?
  34. What is multicast routing?
  35. What is traffic shaping?
  36. What is packet filter?
  37. What is virtual path?
  38. What is virtual channel?
  39. What is logical link control?
  40. Why should you care about the OSI Reference Model?
  41. What is the difference between routable and non- routable protocols?
  42. What is MAU?
  43. Explain 5-4-3 rule.
  44. What is the difference between TFTP and FTP application layer protocols?
  45. What is the range of addresses in the classes of internet addresses?
  46. What is the minimum and maximum length of the header in the TCP segment and IP datagram?
  47. What is difference between ARP and RARP?
  48. What is ICMP?
  49. What are the data units at different layers of the TCP / IP protocol suite?
  50. What is Project 802?
  51. What is Bandwidth?
  52. Difference between bit rate and baud rate?
  53. What is MAC address?
  54. What is attenuation?
  55. What is cladding?
  56. What is RAID?
  57. What is NETBIOS and NETBEUI?
  58. What is redirector?
  59. What is Beaconing?
  60. What is terminal emulation, in which layer it comes?
  61. What is frame relay, in which layer it comes?
  62. What do you meant by “triple X” in Networks?
  63. What is SAP?
  64. What is subnet?
  65. What is Brouter?
  66. How Gateway is different from Routers?
  67. What are the different type of networking / internetworking devices?
  68. What is mesh network?
  69. What is passive topology?
  70. What are the important topologies for networks?
  71. What are major types of networks and explain?
  72. What is Protocol Data Unit?
  73. What is difference between baseband and broadband transmission?
  74. What are the possible ways of data exchange?
  75. What are the types of Transmission media?
  76. What are the types of Transmission media?
  77. What is point-to-point protocol?
  78. What are the two types of transmission technology available?
  79. Difference between the communication and transmission?
  80. What is a different between switch and Hub?
  81. What are the Advantages and Disadvantages of DHCP?
  82. What is Recovery Console?
  83. What is ERD(Emergency Repair Disk)?
  84. What is the difference between POP3 and IMAP Mail Server?
  85. what is .ost file?
  86. Whatz the difference between DNS and WINS?
  87. How can we create VPN to connect to branch office of the same office.what would be the priliminary requirment?
  88. Why should we care about the OSI Reference Model ? What is the main purpose for creating this osi model? why it is a layered model?
  89. What is layer-3 switch?
  90. What is an email client? what is differnce between email client and web mail?
  91. what is the vlan ? how it is work?
  92. Name three network tools used to determine where a network connectivity is lost between two sites A&B.
  93. Which protocol is used for retrieving mails?
  94. What is piggy backing?
  95. What is the default subnet mask for an ipv6 address ?
  96. What is fragmentation of a packet ?
  97. What is MTU of a link ?
  98. Name any field of IP header that can prevent a packet to loop infinitely ?
  99. Under what situations a packet can go into infinite loop in a network ?
  100. Describe a 3-way TCP/IP Handshake.