- 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) 1023
B) 255
C) 49153
D) 2047
- 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) user
C) application
D) domain
- 4. The OSI model transport layer is responsible for regulating the flow of information from source to:
A) router
B) domain
C) destination
D) gateway
- 5. Hosts that send data will continue sending data until that data is:
A) synchronized
B) multiplexed
C) segmented
D) acknowledged
- 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) domains
C) ports
D) applications
- 8. Layer 4 addressing identifies multiple conversations between the:
A) ports
B) applications
C) domains
D) hosts
- 9. In Wireshark, if a user sees "SYN," "SYN, ACK," and "ACK," that user is actually seeing a SESSION being:
A) postponed
B) retransmitted
C) established
D) transferred
- 10. The "NETSTAT" command allows us to see a local host web session with a remote:
A) user
B) gateway
C) domain
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) acknowledgments
B) sequencing
C) sizing
D) establishment
- 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) acknowledgements
B) source and destination ports
C) flow control
D) sequencing
- 15. TCP uses the following 3 features to accurately track data transmission except:
A) gateway correction services
B) numbering and sequencing
C) flow control
D) session establishment
- 16. Remote hosts that receive packets out of order reorder and do what else with those packets?
A) readdress
B) retransmit
C) reconfigure
D) reassemble
- 17. UDP is a protocol which provides minimal delays in data:
A) delivery
B) management
C) configuration
D) sequencing
- 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) 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) reconfigure it
B) re-sequence it
C) retransmit 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) 25
B) 23
C) 80
D) 20
- 22. The Port Number Range for Registered Ports is from 1024 to:
A) 0
B) 49152
C) 49151
D) 65535
- 23. The Port Number Range for "Private and/or Dynamic Ports" is from 49152 to:
A) 0
B) 1024
C) 65535
D) 443
- 24. The Well-Known TCP port for FTP is port:
A) 23
B) 25
C) 21
D) 80
- 25. The Well -Known TCP port for Telnet is port:
A) 21
B) 80
C) 25
D) 23
- 26. The Well-Known TCP port for Secure HTTP (HTTPS) is port:
A) 21
B) 23
C) 25
D) 443
- 27. The Well-Known UDP port for TFTP (Trivial FTP) crucial for cisco file transfer is port:
A) 23
B) 69
C) 21
D) 443
- 28. Which is the best Web site (180+ pages) suited to obtain more information about Port assignments?
A) portnumber4me.com
B) iana.org
C) superport.net
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) 46
B) 47
C) 49
D) FIN
- 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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