- 1. The three-way handshake consists of the following except:
A) SYN-ACK B) RAT C) SYN D) ACK
- 2. Well-known applications that use TCP/IP data encapsulation, use port numbers 0 to:
A) 1023 B) 255 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) application B) user C) IP address D) domain
- 4. The OSI model transport layer is responsible for regulating the flow of information from source to:
A) destination B) router C) domain D) gateway
- 5. Hosts that send data will continue sending data until that data is:
A) multiplexed B) synchronized C) acknowledged D) segmented
- 6. In TCP data transfer, Flow Control is efficient because it prevents the receiver from being overwhelmed by incoming:
A) ports B) syncs C) acks D) data
- 7. Layer 4 addressing identifies the communicating:
A) users B) ports C) domains D) applications
- 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) established B) postponed C) retransmitted D) transferred
- 10. The "NETSTAT" command allows us to see a local host web session with a remote:
A) domain B) gateway C) user D) server
- 11. When forwarding data, the source hosts dynamically selects the source:
A) gateway B) connection C) port D) address
- 12. To provide flow control as segments travel from source to destination, TCP uses window:
A) sequencing B) establishment C) sizing D) acknowledgments
- 13. The best protocol used to provide low overhead and applications that do NOT require reliable data delivery would be:
A) UDP B) TCP C) IP D) POP3
- 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) numbering and sequencing B) session establishment C) flow control D) gateway correction services
- 16. Remote hosts that receive packets out of order reorder and do what else with those packets?
A) reconfigure B) retransmit C) readdress D) reassemble
- 17. UDP is a protocol which provides minimal delays in data:
A) sequencing B) configuration C) management D) delivery
- 18. The destination port for HTTP services on remote Web servers is usually port:
A) 80 B) 53 C) 23 D) 25
- 19. During the 3-way handshake, TCP begins initializing the sessions' sequence:
A) connection B) numbers C) users D) domains
- 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) 23 B) 25 C) 20 D) 80
- 22. The Port Number Range for Registered Ports is from 1024 to:
A) 65535 B) 49152 C) 49151 D) 0
- 23. The Port Number Range for "Private and/or Dynamic Ports" is from 49152 to:
A) 65535 B) 443 C) 1024 D) 0
- 24. The Well-Known TCP port for FTP is port:
A) 80 B) 21 C) 23 D) 25
- 25. The Well -Known TCP port for Telnet is port:
A) 23 B) 80 C) 25 D) 21
- 26. The Well-Known TCP port for Secure HTTP (HTTPS) is port:
A) 443 B) 21 C) 23 D) 25
- 27. The Well-Known UDP port for TFTP (Trivial FTP) crucial for cisco file transfer is port:
A) 21 B) 69 C) 23 D) 443
- 28. Which is the best Web site (180+ pages) suited to obtain more information about Port assignments?
A) iana.org B) port.org C) portnumber4me.com 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) FIN B) 49 C) 46 D) 47
- 30. Window Sizing, 'sliding windows,' or Windowing, occurs when Flow Control detects too much congestion with the:
A) gateway B) domain C) router D) receiver
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