30 Questions
What is demultiplexing in the context of the transport layer?
One entity delivers items to more than one source.
What is the purpose of error control in the transport layer?
To make the transport layer reliable
What is a characteristic of the User Datagram Protocol (UDP)?
It is a connectionless, unreliable transport protocol.
What is the primary difference between a connectionless and a connection-oriented service?
The establishment of a connection before data transfer
What is a common task performed by the transport layer?
Flow control and error control
What is a feature of the Transmission Control Protocol (TCP)?
It is a connection-oriented, end-to-end reliable protocol.
What type of communication does TCP provide?
Connection-oriented
Which layer of the OSI model does TCP operate in?
Transport layer
What is the purpose of TCP sequence numbers?
To reconstruct the data stream
Why does TCP need sending and receiving buffers?
Because the sending and receiving rates may not match
What is the term used to describe the imaginary connection between two TCP processes?
Tube
What is the term used to describe the grouping of bytes into packets in TCP?
Segmentation
What is the primary function of the transport layer in data networks?
Establishing process-to-process communication
What is the purpose of well-known port numbers in TCP/IP?
To provide a universal address for servers
What is the result of multiplexing in the transport layer?
An entity accepts items from more than one source
What is the range of port numbers in TCP/IP?
Between 0 and 65,535
What is the role of the transport layer in encapsulation and decapsulation?
To encapsulate and decapsulate messages
What is the combination of an IP address and a port number called?
Socket address
What is the minimum value of a port number in UDP?
0
What is the purpose of the checksum field in a UDP packet?
To detect errors over the entire user datagram
What is the length of the header in a UDP packet?
8 bytes
How is the length of the data in a UDP packet calculated?
By subtracting the length of the header from the length of the packet
What is the maximum value of a port number in UDP?
65,535
What is the purpose of the length field in a UDP packet?
To define the total length of the user datagram
What is the purpose of the acknowledgment mechanism in TCP?
To check the safe and sound arrival of data
What is the range of the length of the TCP header in bytes?
20 to 60
What is the purpose of the sequence number in the TCP segment?
To define the number assigned to the first byte of data contained in the segment
What is the purpose of the window size field in the TCP segment?
To enable flow control
How many bits are used to define the header length in the TCP segment?
4
What is the purpose of the control field in the TCP segment?
To enable flow control, connection establishment and termination, connection abortion, and the mode of data transfer
Learn about the transport layer protocols TCP and UDP, process-to-process communication, and the role of the transport layer in data networks.
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