Test your basic knowledge |

Cisco Network Fundamentals - 2

Subjects : cisco, it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Name the private address blocks






2. IP requires that each sending and receiving device have a __________ IP address.






3. When the client end of the session has no more data to transfer - it sets the ___________ flag in the header of the segment? (Hint: three-letter acronym)






4. Which of the following are true about network layer encapsulation?






5. Which is a connectionless protocol - UDP or TCP?






6. Which of the following are not functions of the network layer?






7. What is the protocol number for UDP?






8. What is the port range for well known ports






9. Port 23 is?






10. Which of the following is true about IP?

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11. What is the proper order of SYN sequence?






12. What is contained in the header of each segment or datagram?






13. Encapsulation occurs at all - some or none of the layers of the OSI model?






14. How many bits are in an IPv4 address?






15. Which protocol ensures more reliable delivery between applications - TCP or UDP?






16. How does UDP keep track of sequence numbers?

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17. If a router needs to send a packet but doesn't know the next hop or destination network - what can it do?






18. Port 443 is?






19. Pieces of information about a route that a routing table contains






20. What is the proper order of FIN sequence?






21. What are three key factors to consider when grouping hosts into a common network?






22. List three network applications that use UDP






23. When an IP packet is decapsulated - the information in the packet is handed to the upper or lower layers for delivery and processing?






24. What does segmentation provide to communications?






25. Dynamic ports fall into what category of port






26. Port 8080 is?






27. What is the port range for Registered ports






28. Which of the following are true about static and dynamic routing?






29. End systems use port numbers to select the proper application. What is the lowest port number that can be dynamically assigned by the host system? 1 - 128 - 256 or 1024?






30. SYN is?






31. List three network applications that use TCP






32. What kinds of problems are caused by excessive broadcast traffic on a network segment?






33. Ephermeral port is what type of port






34. Why does TCP use a sequence number in the header?






35. Ports can be shared at the same time? (t/f)

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36. What are the transport layer's responsibilities?






37. MSN messenger uses TCP or UDP?






38. How many bytes of overhead do TCP segments carry? How many does UDP carry?






39. On a particular network how would you determine the default gateway address for a host?






40. For a network layer packet to travel between hosts - it must be handed down to the _________________ layer - for another layer of encapsulation called framing - and then encoded and put onto the ____________ layer to be sent to the next router.






41. What are the three basic characteristics of IPv4?






42. Routers add routes for the connected networks to their ________________ .






43. What is the purpose of the ToS field in the IPv4 header?






44. What is the purpose of TCP/UDP port numbers?






45. Which characteristics are part of TCP? Pick two: Reliable - connectionless - no flow control - resends anything not received?






46. What is a common device used to divide/break up a broadcast domain into smaller broadcast domains?






47. The router a network uses to send and receive messages beyond the network is called a ___________ router.






48. Port 520 is?






49. At the transport layer - which of the following controls is used to keep a transmitting host from overflowing the buffers of a receiving host? Choose one: Best effort - encryption - flow control - congestion avoidance?






50. Which of the following are true about IP?