CCNA (R&S)

413.70

CCNA (R&S)Interview Q&A Vol 1.0

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CCNA (R&S)Interview Q & A Vol 1.0

Questions 100 +

Check the complete list of questions:

  1. What is a ‘Router’?
  2. What is a network Switch?
  3. What is a ‘protocol’ in networking?
  4. Differentiate between a switch and a hub?
  5. How many layers are there in an OSI reference model? Name them.
  6. What is the difference between a ‘broadcast domain’ and a ‘collision domain’?
  7. What is the size of an IP address?
  8. What is a DLCI?
  9. Name the different types of networks?
  10. What is the difference between a ‘half-duplex’ and a ‘full-duplex’ system?
  11. What does the show protocol display?
  12. What is PoE (Power over Ethernet)?
  13. What is the use of ‘ping’ command?
  14. What is ‘round-trip time’?
  15. What is the difference between public and private IP?
  16. What is latency?
  17. At which layer of OSI does frame relay technology work?
  18. What is the size of a Cisco ping packet?
  19. What is the difference between static and dynamic IP addressing?
  20. What does MTU stand for? What is the default size?
  21. Does a bridge divide a network into smaller sections?
  22. When does network congestion occur?
  23. What is the role of the LLC sublayer?
  24. What are the different memories used in a CISCO router?
  25. Differentiate full-duplex from half-duplex.
  26. What is MTU?
  27. What command do we give if router IOS is stuck?
  28. Mention what does the clock rate do?
  29. Mention what is the metric of EIGRP protocol?
  30. What is BootP?
  31. What is the difference between TCP and UDP?
  32. In how many ways you can access the router?
  33. What is difference between EIGRP and OSPF?
  34. Mention the ranges for the private IPs?
  35. What is DHCP?
  36. What is the size of IP address?
  37. What is the difference between the switch and Hub?
  38. What is route poisoning?
  39. What is Bandwidth?
  40. What is HDLC?
  41. What is difference between Default VLAN and Native VLAN?
  42. What is difference between PAGP and LACP?
  43. What is difference between LAN and WAN?
  44. What is ‘subnet’? Why is it used?
  45. What are benefits of VLAN?
  46. Which device filters and forwards data packet based on layer 3 IP address?
  47. What is ARP?
  48. What is difference between VLAN and Subnet?
  49. What is difference between Modem and Router?
  50. How many links we need to make a network fully meshed which has 10 devices?
  51. How does cut-through LAN switching work?
  52. Differentiate User Mode from Privileged Mode?
  53. What is the range of class C address?
  54. Which router command is used to enable IPv6?
  55. What is PoE (Power over Ethernet) ?
  56. What is the difference between broadcast domain and collision domain?
  57. What is difference between Straight through and Crossover cable?
  58. What is Round Trip Time?
  59. Difference between CSMA/CD and CSMA/CA?
  60. What is IEEE standard for wireless networking?
  61. What is AS (Autonomous System) ?
  62. Differentiate User Mode from Privileged Mode?
  63. What are major types of Networks and explain?
  64. What is VTP?
  65. What are the VTP modes?
  66. What is the difference between Unicast, Multicast, Broadcast, and Anycast?
  67. Can IP address be assigned to Layer 2?
  68. Which are most common LAN topologies ?
  69. What is the default size of Frame?
  70. What is concept of private VLAN?
  71. What is MAC address?
  72. What is difference between Router and Layer 3 Switch?
  73. Which layer called error detection layer?
  74. What is function of “Passive Interface” in OSPF?
  75. What are the different types of passwords that you can use in Cisco routers?
  76. What is meant ARP and RARP?
  77. What are the different types of cables that are used in routing?
  78. What is the difference between ‘bit rate’ and ‘baud rate’?
  79. Define CDP and its functions?
  80. What is the subnet mask of 192.168.10.1/29?
  81. What is distance vector? Explain with example.
  82. How many broadcast domains are in a layer 2 Switch?
  83. What is the administrative distance of RIP, EIGRP and OSPF?
  84. What happens if there is no VLAN in switch ports?
  85. What are the two ports of switches?
  86. Define STP. Why is it used?
  87. What are the multicast addresses used in IPv4 and IPv6 by different protocols?
  88. What is HDLC?
  89. What are 2 main types of ACLs?
  90. What is BIA?
  91. Which router command is used to display RAM contents?
  92. Which router command is used to display NVRAM (Non-volatile random-access memory) contents?
  93. Which IP addresses can be given as private addresses?
  94. What is Syslog?
  95. What is the difference between private IP and public IP?
  96. What is NTP?
  97. What is SNMP?
  98. On what algorithm does OSPF work?
  99. What are the major states in switch?
  100. What are the modes of LACP?
  101. What are the modes of PAGP?
  102. What is the use of “Service password Encryption”?
  103. To obtain an IP address from DHCP server, which message a client system uses when it boots up?
  104. Which device filters and forwards data frame based on layer 2 MAC address?
  105. What is FCS?
  106. What is Size of MAC Address?
  107. HOW will one determine which device mac address is on what port of cisco Switch?
  108. What is CAM?
  109. What is loop back IP in IPV6?
  110. Which layer of OSI model I responsible for reliable connections?

 

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