- 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) 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) IP address
B) domain
C) application
D) user
- 4. The OSI model transport layer is responsible for regulating the flow of information from source to:
A) destination
B) domain
C) router
D) gateway
- 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) acks
B) ports
C) data
D) syncs
- 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) applications
C) ports
D) domains
- 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) server
B) domain
C) gateway
D) user
- 11. When forwarding data, the source hosts dynamically selects the source:
A) address
B) connection
C) gateway
D) port
- 12. To provide flow control as segments travel from source to destination, TCP uses window:
A) sequencing
B) establishment
C) acknowledgments
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) TCP
C) UDP
D) IP
- 14. TCP and UDP header information BOTH include:
A) acknowledgements
B) sequencing
C) flow control
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) reconfigure
B) readdress
C) reassemble
D) retransmit
- 17. UDP is a protocol which provides minimal delays in data:
A) delivery
B) sequencing
C) management
D) configuration
- 18. The destination port for HTTP services on remote Web servers is usually port:
A) 53
B) 23
C) 25
D) 80
- 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) re-sequence it
B) reconnect it
C) retransmit it
D) reconfigure 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) 80
D) 20
- 22. The Port Number Range for Registered Ports is from 1024 to:
A) 49151
B) 65535
C) 0
D) 49152
- 23. The Port Number Range for "Private and/or Dynamic Ports" is from 49152 to:
A) 1024
B) 0
C) 443
D) 65535
- 24. The Well-Known TCP port for FTP is port:
A) 21
B) 80
C) 25
D) 23
- 25. The Well -Known TCP port for Telnet is port:
A) 21
B) 23
C) 25
D) 80
- 26. The Well-Known TCP port for Secure HTTP (HTTPS) is port:
A) 23
B) 443
C) 25
D) 21
- 27. The Well-Known UDP port for TFTP (Trivial FTP) crucial for cisco file transfer is port:
A) 23
B) 69
C) 443
D) 21
- 28. Which is the best Web site (180+ pages) suited to obtain more information about Port assignments?
A) iana.org
B) portnumber4me.com
C) port.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) 49
B) 47
C) 46
D) FIN
- 30. Window Sizing, 'sliding windows,' or Windowing, occurs when Flow Control detects too much congestion with the:
A) receiver
B) gateway
C) domain
D) router
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