- 1. The three-way handshake consists of the following except:
A) ACK B) SYN C) SYN-ACK D) RAT
- 2. Well-known applications that use TCP/IP data encapsulation, use port numbers 0 to:
A) 49153 B) 255 C) 2047 D) 1023
- 3. Port numbers on TCP header segments are extremely important because they enable a receiving host to forward data to the correct
A) IP address B) user C) domain D) application
- 4. The OSI model transport layer is responsible for regulating the flow of information from source to:
A) destination B) gateway C) router D) domain
- 5. Hosts that send data will continue sending data until that data is:
A) multiplexed B) acknowledged C) segmented D) synchronized
- 6. In TCP data transfer, Flow Control is efficient because it prevents the receiver from being overwhelmed by incoming:
A) syncs B) acks C) ports D) data
- 7. Layer 4 addressing identifies the communicating:
A) domains B) users C) ports D) applications
- 8. Layer 4 addressing identifies multiple conversations between the:
A) ports B) domains C) applications D) hosts
- 9. In Wireshark, if a user sees "SYN," "SYN, ACK," and "ACK," that user is actually seeing a SESSION being:
A) postponed B) transferred C) retransmitted D) established
- 10. The "NETSTAT" command allows us to see a local host web session with a remote:
A) server B) gateway C) domain D) user
- 11. When forwarding data, the source hosts dynamically selects the source:
A) connection B) address C) port D) gateway
- 12. To provide flow control as segments travel from source to destination, TCP uses window:
A) sizing B) sequencing C) acknowledgments D) establishment
- 13. The best protocol used to provide low overhead and applications that do NOT require reliable data delivery would be:
A) TCP B) IP C) POP3 D) UDP
- 14. TCP and UDP header information BOTH include:
A) flow control B) acknowledgements C) sequencing D) source and destination ports
- 15. TCP uses the following 3 features to accurately track data transmission except:
A) flow control B) session establishment C) numbering and sequencing D) gateway correction services
- 16. Remote hosts that receive packets out of order reorder and do what else with those packets?
A) readdress B) reconfigure C) retransmit D) reassemble
- 17. UDP is a protocol which provides minimal delays in data:
A) sequencing B) delivery C) configuration D) management
- 18. The destination port for HTTP services on remote Web servers is usually port:
A) 80 B) 53 C) 25 D) 23
- 19. During the 3-way handshake, TCP begins initializing the sessions' sequence:
A) connection B) users C) domains D) numbers
- 20. Hosts that do not receive an ACK from the receiving server will continue doing what with the already sent data?
A) reconfigure it B) re-sequence it C) retransmit it D) reconnect it
- 21. Whereas the average size of a UDP Datagram segment is 8 Bytes, a TCP segment is how many bytes?
A) 23 B) 20 C) 25 D) 80
- 22. The Port Number Range for Registered Ports is from 1024 to:
A) 49152 B) 0 C) 65535 D) 49151
- 23. The Port Number Range for "Private and/or Dynamic Ports" is from 49152 to:
A) 65535 B) 1024 C) 443 D) 0
- 24. The Well-Known TCP port for FTP is port:
A) 80 B) 23 C) 21 D) 25
- 25. The Well -Known TCP port for Telnet is port:
A) 23 B) 25 C) 80 D) 21
- 26. The Well-Known TCP port for Secure HTTP (HTTPS) is port:
A) 21 B) 443 C) 23 D) 25
- 27. The Well-Known UDP port for TFTP (Trivial FTP) crucial for cisco file transfer is port:
A) 443 B) 23 C) 69 D) 21
- 28. Which is the best Web site (180+ pages) suited to obtain more information about Port assignments?
A) superport.net B) iana.org C) port.org D) portnumber4me.com
- 29. If Host A is sending a TCP message with the packets #43, 44, 45, 46, and all was well received, the ACK should have what number returning to the host?
A) 46 B) 49 C) 47 D) FIN
- 30. Window Sizing, 'sliding windows,' or Windowing, occurs when Flow Control detects too much congestion with the:
A) gateway B) router C) receiver D) domain
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