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