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






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






3. Why is IP 'media independent'?






4. How does UDP keep track of sequence numbers?

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5. What is the port range for well known ports






6. Port 443 is?






7. Port 110 is?






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






9. Port 20 is?






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






11. List three network applications that use TCP






12. Are well known ports registered






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






14. In networking terms - What is reliability?






15. What four tasks does the network layer perform?






16. UDP does or does not create a session?






17. Ephermeral port is what type of port






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






19. Port 8080 is?






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

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21. What is a broadcast domain?






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

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23. What does segmentation provide to communications?






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






25. MTU stands for ?






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






27. 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?






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

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






30. 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?






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






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






33. Which of the following are true about IP?






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






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






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






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






38. ACK is?






39. What is the port range for Registered ports






40. 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)






41. An example of a communication that sends a letter to someone without notifying the recipient in advance is called?






42. MSN messenger uses TCP or UDP?






43. What are the transport layer's responsibilities?






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






45. What is the protocol number for UDP?






46. What is the default DNS port number?






47. What is the proper order of SYN sequence?






48. The three main features of routes in a routing table are?






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






50. What is the port range for dynamic or private ports