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19 Cards in this Set
- Front
- Back
Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)
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This contains a Telnet request.
This is a TCP header. |
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With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?
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0 to 1023
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Why are port numbers included in the TCP header of a segment?
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to enable a receiving host to forward the data to the appropriate application
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Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?
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transport
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Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?
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reach a timeout and resend the data that needs to be acknowledged
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Why is flow control used for TCP data transfer?
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to prevent the receiver from being overwhelmed by incoming data
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Which two options represent Layer 4 addressing? (Choose two.)
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identifies the communicating applications
identifies multiple conversations between the hosts |
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Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?
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session establishment
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Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)
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The local host is using three client sessions.
The local host is using web sessions to a remote server. |
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What is dynamically selected by the source host when forwarding data?
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source port
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What are two features of the User Datagram Protocol (UDP)? (Choose two.)
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low overhead
connectionless |
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What mechanism is used by TCP to provide flow control as segments travel from source to destination?
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UDP
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Which information is found in both the TCP and UDP header information?
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source and destination port
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Which three features allow TCP to reliably and accurately track the transmission of data from source to destination? (Choose three.)
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flow control
session establishment numbering and sequencing |
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During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?
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The packets will be delivered and reassembled at the destination.
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Which is an important characteristic of UDP?
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minimal delays in data delivery
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After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?
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80
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Which event occurs during the transport layer three-way handshake?
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TCP initializes the sequence numbers for the sessions.
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Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?
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Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.
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