10 Questions
What type of address does the transport layer header include?
Service-point address
What is the purpose of segmentation in the transport layer?
To reassemble the message at the destination
How does a connectionless transport layer deliver segments?
By treating each segment as an independent packet
What is the primary difference between connectionless and connection-oriented transport layers?
Connection-oriented layers create a connection first
In what way does flow control differ between the data link layer and the transport layer?
Flow control at the data link layer is end-to-end
What does the sequence number in each segment enable the transport layer to do?
Identify and replace lost packets
How does error control differ between the data link layer and the transport layer?
Error control at the data link layer is process-to-process
What is the responsibility of the transport layer regarding flow control?
Controlling data transmission end-to-end
'A connection-oriented transport layer makes a connection with the transport layer at the destination machine first before delivering the packets.' Which feature of TCP/IP protocol suite does this statement describe?
Transmission Control Protocol (TCP)
Which protocol operates at the transport layer in TCP/IP protocol suite?
Simple Mail Transfer Protocol (SMTP)
Study Notes
Transport Layer
- Responsible for process-to-process delivery of the entire message
- Ensures that the whole message arrives intact and in order
- Oversees both error control and flow control at the source-to-destination level
Service-Point Addressing
- Computers often run several programs at the same time
- Source-to-destination delivery means delivery not only from one computer to another but also from a specific process (running program) on one computer to a specific process (running program) on the other
Transport Layer Protocols
- TCP/IP represented by two protocols: TCP and UDP
- UDP is a simpler protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer
- TCP is a reliable stream transport protocol that provides full transport-layer services to applications
Transmission Control Protocol (TCP)
- Connection-oriented protocol that establishes a connection between both ends of a transmission before transmitting data
- Divides a stream of data into smaller units called segments
- Each segment includes a sequence number for reordering and an acknowledgment number for the segments received
- Segments are carried across the internet inside of IP datagrams
Key Functions
- Segmentation and reassembly of messages
- Connection control: can be either connectionless or connection-oriented
- Flow control: responsible for controlling the amount of data that can be sent at one time
- Error control: responsible for detecting and correcting errors in the data transmission
Explore the responsibilities of the transport layer in the networking communication process, focusing on process-to-process delivery and ensuring the entire message arrives intact. Learn how this layer differs from the network layer in handling data packets.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
