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