ITN Chapter 9 TEST Study Guide
What is the complete range of TCP and UDP well-known ports?
0 to 1023
A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth?
Multiplexing
___________ is the term used to describe the interleaving of data from multiple users on the same network.
Multiplexing
Both TCP and UDP use ___________ to separate multiple connections on the same channel.
Port number Ports
A dynamic port in the range of 49152 to 65535 is also known as a(n) _________port
Private
A total of___________ messages are exchanged during the TCP session termination process between the client and the server.
4
What range of ports can either be used by TCP to identify the requested service on the destination devices or as a client source port?
49152 to 65535
Which two TCP header fields are used to confirm receipt of data?
Acknowledgment number Sequence number
A host device sends a data packet to a web server via the HTTP protocol. What is used by the transport layer to pass the data stream to the proper application on the server?
Destination port number
Which TCP header control bit is set on to terminate a TCP conversation?
FIN
What is a beneficial feature of the UDP transport Protocol?
Fewer delays in transmission
What is an advantage that UDP has over TCP?
Low Overhead
TCP will normally retransmit lost data from the last successful acknowledgment to allow the destination to acknowledge bytes in discontinuous segments and request retransmission of only the missing data. Both hosts must be able to support an optional feature called ________
SACK (selective acknowledgment)
During a TCP session, the ________ flag is used by the client to request communication with the server
SYN
Which two flags in the TCP header are used in the TCP three-way handshake to establish connectivity between two network devices?
SYN ACK
Match each application to its connectionless or connection oriented protocol. TFTP Telnet DHCP FTP HTTP
TFTP - UDP Telnet - TCP DHCP - UDP FTP - TCP HTTP - TCP
A client is downloading a large file from a server using FTP. One of the segments is lost during transit. What will happen?
The FTP client responds to the server with a smaller window size in the TCP header.
Which factor determines TCP window size?
The amount of data the destination can process at one time
What is a socket?
The combination of a source IP address and port number or a destination IP address and port number.
What are the primary purposes of the transport layer?
Tracking the individual communication between applications on the source and destination hosts Segmenting data for and reassembling segmented data into streams of application data at the destination Identifying the proper application for each communication stream
What does UDP do when receiving messages that are more than one datagram in length?
UDP reassembles that data in the order it was received and passes it to the application.
Which of the following types of applications would UDP use?
VoIP DHCP TFTP
Which TCP header field specifies the number of segments that can be accepted before an acknowledgement is required?
Window Size
Match the characteristics to the protocol category. Window size Checksum Connectionless Best for VoIP Port Numbers Three-way handshake
Window size - TCP Checksum - TCP/UDP Connectionless - UDP Best for VoIP - UDP Port Numbers - TCP/UDP Three-way handshake - TCP
What is a characteristic of UDP?
connectionless
What is assigned by the transport layer to identify an application or service?
port
