- 1. The three-way handshake consists of the following except:
A) ACK
B) RAT
C) SYN-ACK
D) SYN
- 2. Well-known applications that use TCP/IP data encapsulation, use port numbers 0 to:
A) 49153
B) 1023
C) 2047
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) 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) gateway
B) router
C) destination
D) domain
- 5. Hosts that send data will continue sending data until that data is:
A) segmented
B) synchronized
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) ports
C) syncs
D) data
- 7. Layer 4 addressing identifies the communicating:
A) domains
B) ports
C) users
D) applications
- 8. Layer 4 addressing identifies multiple conversations between the:
A) applications
B) domains
C) hosts
D) ports
- 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) user
D) gateway
- 11. When forwarding data, the source hosts dynamically selects the source:
A) connection
B) port
C) address
D) gateway
- 12. To provide flow control as segments travel from source to destination, TCP uses window:
A) sizing
B) establishment
C) acknowledgments
D) sequencing
- 13. The best protocol used to provide low overhead and applications that do NOT require reliable data delivery would be:
A) TCP
B) POP3
C) IP
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) flow control
B) numbering and sequencing
C) gateway correction services
D) session establishment
- 16. Remote hosts that receive packets out of order reorder and do what else with those packets?
A) reconfigure
B) reassemble
C) retransmit
D) readdress
- 17. UDP is a protocol which provides minimal delays in data:
A) management
B) delivery
C) configuration
D) sequencing
- 18. The destination port for HTTP services on remote Web servers is usually port:
A) 25
B) 80
C) 23
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) retransmit it
B) reconnect it
C) re-sequence 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) 80
B) 23
C) 25
D) 20
- 22. The Port Number Range for Registered Ports is from 1024 to:
A) 0
B) 49151
C) 49152
D) 65535
- 23. The Port Number Range for "Private and/or Dynamic Ports" is from 49152 to:
A) 1024
B) 443
C) 65535
D) 0
- 24. The Well-Known TCP port for FTP is port:
A) 23
B) 80
C) 25
D) 21
- 25. The Well -Known TCP port for Telnet is port:
A) 80
B) 23
C) 25
D) 21
- 26. The Well-Known TCP port for Secure HTTP (HTTPS) is port:
A) 25
B) 443
C) 21
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) portnumber4me.com
B) port.org
C) superport.net
D) iana.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) 49
B) 46
C) 47
D) FIN
- 30. Window Sizing, 'sliding windows,' or Windowing, occurs when Flow Control detects too much congestion with the:
A) receiver
B) domain
C) gateway
D) router
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