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