- 1. The three-way handshake consists of the following except:
A) ACK
B) SYN-ACK
C) RAT
D) SYN
- 2. Well-known applications that use TCP/IP data encapsulation, use port numbers 0 to:
A) 2047
B) 255
C) 49153
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) domain
B) application
C) user
D) IP address
- 4. The OSI model transport layer is responsible for regulating the flow of information from source to:
A) gateway
B) domain
C) router
D) destination
- 5. Hosts that send data will continue sending data until that data is:
A) synchronized
B) acknowledged
C) multiplexed
D) segmented
- 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) users
B) ports
C) applications
D) domains
- 8. Layer 4 addressing identifies multiple conversations between the:
A) domains
B) hosts
C) applications
D) ports
- 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) transferred
D) retransmitted
- 10. The "NETSTAT" command allows us to see a local host web session with a remote:
A) domain
B) gateway
C) server
D) user
- 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) establishment
B) sequencing
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) UDP
B) POP3
C) TCP
D) IP
- 14. TCP and UDP header information BOTH include:
A) flow control
B) acknowledgements
C) source and destination ports
D) sequencing
- 15. TCP uses the following 3 features to accurately track data transmission except:
A) session establishment
B) flow control
C) gateway correction services
D) numbering and sequencing
- 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) configuration
B) sequencing
C) management
D) delivery
- 18. The destination port for HTTP services on remote Web servers is usually port:
A) 80
B) 25
C) 53
D) 23
- 19. During the 3-way handshake, TCP begins initializing the sessions' sequence:
A) users
B) connection
C) domains
D) numbers
- 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) retransmit it
C) reconfigure it
D) reconnect 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) 49152
B) 0
C) 65535
D) 49151
- 23. The Port Number Range for "Private and/or Dynamic Ports" is from 49152 to:
A) 65535
B) 0
C) 1024
D) 443
- 24. The Well-Known TCP port for FTP is port:
A) 21
B) 23
C) 25
D) 80
- 25. The Well -Known TCP port for Telnet is port:
A) 25
B) 80
C) 21
D) 23
- 26. The Well-Known TCP port for Secure HTTP (HTTPS) is port:
A) 25
B) 21
C) 443
D) 23
- 27. The Well-Known UDP port for TFTP (Trivial FTP) crucial for cisco file transfer is port:
A) 443
B) 69
C) 23
D) 21
- 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) 49
C) FIN
D) 46
- 30. Window Sizing, 'sliding windows,' or Windowing, occurs when Flow Control detects too much congestion with the:
A) router
B) gateway
C) domain
D) receiver
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