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 does segmentation provide to communications?






2. 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?






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






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






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






6. What is the port range for Registered ports






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






8. Port 443 is?






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






10. What is the protocol number for UDP?






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






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






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






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


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






16. How does UDP keep track of sequence numbers?


17. Port 194 is?






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






19. SYN is?






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






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






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


23. How many bits are in an IPv4 address?






24. 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.






25. Ephermeral port is what type of port






26. Are well known ports registered






27. What are the three basic characteristics of IPv4?






28. What four tasks does the network layer perform?






29. MTU stands for ?






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






31. What are the transport layer's responsibilities?






32. What is a broadcast domain?






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


34. In networking terms - What is reliability?






35. List three network applications that use UDP






36. Name the private address blocks






37. Which is a connection-oriented protocol - TCP or UDP?






38. Why is IP 'media independent'?






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






40. UDP does or does not create a session?






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






42. 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?






43. What is the proper order of SYN sequence?






44. Which of the following is true about IP?


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. What is the port range for dynamic or private ports






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






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






49. MSN messenger uses TCP or UDP?






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