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. List three network applications that use UDP






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






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






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






5. What four tasks does the network layer perform?






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






7. What is the default DNS port number?






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






9. Why is IP 'media independent'?






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






11. Dynamic ports fall into what category of port






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

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13. Port 194 is?






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






15. Port 110 is?






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






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

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18. 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?






19. List three network applications that use TCP






20. Port 443 is?






21. What is the port range for Registered ports






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






23. What is the proper order of SYN sequence?






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






25. MSN messenger uses TCP or UDP?






26. In networking terms - What is reliability?






27. TCP header provides for






28. How many bits are in an IPv4 address?






29. Port 23 is?






30. How does UDP keep track of sequence numbers?

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






32. 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?






33. 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.






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






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






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






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






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






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






40. MTU stands for ?






41. ACK is?






42. What is the purpose of sequence numbers?






43. Determines how much data a sending host running TCP/IP can transmit before it must receive an acknowledgment






44. SYN is?






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






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






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






48. What is the port range for well known ports






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






50. How many bits are in an IPv6 address?