Podcast
Questions and Answers
What type of address does the transport layer header include?
What type of address does the transport layer header include?
- MAC address
- IP address
- Service-point address (correct)
- URL address
What is the purpose of segmentation in the transport layer?
What is the purpose of segmentation in the transport layer?
- To reassemble the message at the destination (correct)
- To divide the network messages into segments
- To uniquely identify each packet
- To establish a connection with the destination machine
How does a connectionless transport layer deliver segments?
How does a connectionless transport layer deliver segments?
- By ensuring flow control across a single link
- By performing error control process-to-process
- By treating each segment as an independent packet (correct)
- By making a direct connection with the destination machine
What is the primary difference between connectionless and connection-oriented transport layers?
What is the primary difference between connectionless and connection-oriented transport layers?
In what way does flow control differ between the data link layer and the transport layer?
In what way does flow control differ between the data link layer and the transport layer?
What does the sequence number in each segment enable the transport layer to do?
What does the sequence number in each segment enable the transport layer to do?
How does error control differ between the data link layer and the transport layer?
How does error control differ between the data link layer and the transport layer?
What is the responsibility of the transport layer regarding flow control?
What is the responsibility of the transport layer regarding flow control?
'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?
'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?
Which protocol operates at the transport layer in TCP/IP protocol suite?
Which protocol operates at the transport layer in TCP/IP protocol suite?
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
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Description
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.
