Dividing line between the upper layers and the lower layers of the OSI model (Segments and Datagrams)
Transport Layer
What is TCP?
Transmission Control Protocol
Connection-oriented protocol that is a reliable way to transport segments across the network
Transmission Control Protocol
Explain the “Three-Way Handshake”
- Client sends synch to server
- Server sends back synch ack to client
- Client sends back ack to server
What is UDP?
User Datagram Protocol
Connectionless protocol that is an unreliable way to transport segments across the network
User Datagram Protocol
True or False?
Layer 4 is for segments almost exclusively.
True
True or False?
Layer 4 devices such as WAN accelerators, Load balancers or firewalls
False. (all of them)
__________ uses TCP
Segments
__________ uses UDP
Datagram
Which of these (TCP or UDP) consist of the following:
- Reliable
- Connection-oriented
- Segment retransmission and flow control through windowing
- Segment sequencing
- Acknowledges segments
TCP
Which of these (TCP or UDP) consist of the following:
- Unreliable
- Connectionless
- No windowing or retransmission
- No sequencing
- No acknowledgment
UDP
Allows the clients to adjust the amount of data in each segment (sends information while minimizing retransmissions and maximizing throughput)
Windowing
Occurs when devices allocate memory to store segments if bandwidth is not readily available
Buffering
