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






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






3. During data transfer - What is the receiving host responsible for?






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






5. Which of the following are true about TCP and IP?

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6. How many bits are in an IPv4 address?






7. What is the proper order of FIN sequence?






8. Port 25 is?






9. Which protocol provides connectionless network layer services? IP - TCP - UDB or OSI?






10. What does segmentation provide to communications?






11. What is the port range for Registered ports






12. Port 20 is?






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






14. What are the three basic characteristics of IPv4?






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






16. What is the protocol number for UDP?






17. 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?






18. What information does a router need to successfully forward packets?






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






20. TCP is a ________________ layer protocol.






21. What two commands can be used to view a host's routing table?






22. What is the name of the process of removing the OSI Layer 2 information from an IP packet?






23. The three-way handshake performs what three functions?






24. The value of the ACK number field is equal to the client ISN plus ___________ (number)?






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






26. Port 110 is?






27. Port 520 is?






28. Are well known ports registered






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






30. IP is designed or not designed to track and manage the flow of packets?






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






32. Port 443 is?






33. MSN messenger uses TCP or UDP?






34. UDP stands for?






35. Which protocol provides just the basic functions for efficiently delivering data pieces between appropriate applications - TCP or UDP?

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36. In networking terms - What is reliability?






37. Name the private address blocks






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






39. Which of the following are true about IP?






40. What is the port range for well known ports






41. When an OSI Layer 4 PDU has been encapsulated at the network layer it is called a ______________.






42. Port 23 is?






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






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






45. 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)






46. MTU stands for ?






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






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

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49. What is the netstat utility used for on a host?






50. 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.