Podcast
Questions and Answers
What is the primary role of a protocol in network communication?
What is the primary role of a protocol in network communication?
What is a protocol stack?
What is a protocol stack?
Which design issue is NOT commonly associated with network layers?
Which design issue is NOT commonly associated with network layers?
Which of the following best describes connection-oriented services?
Which of the following best describes connection-oriented services?
Signup and view all the answers
How does error control typically ensure data reliability in network services?
How does error control typically ensure data reliability in network services?
Signup and view all the answers
What is the key difference between connectionless and connection-oriented services?
What is the key difference between connectionless and connection-oriented services?
Signup and view all the answers
Which term describes the process where each data message includes a complete destination address?
Which term describes the process where each data message includes a complete destination address?
Signup and view all the answers
Which of the following is NOT a common characteristic of reliable services?
Which of the following is NOT a common characteristic of reliable services?
Signup and view all the answers
Study Notes
Network Software Architecture and its Layers and Protocols
- Course: CSE306
- Topics: Protocol Hierarchies, Design Issues for the Layers, Connection-Oriented and Connectionless Services, Service Primitives, Relationship of Services to Protocols
Protocol Hierarchies
- Network architecture uses layers, protocols, and interfaces
- Host 1 communicates with Host 2 using layers and protocols
- Each layer uses protocols to communicate with its peer layer on the other host
- Communication involves layers 1 to 5 in a hierarchy
Design Issues for the Layers
- Addressing or naming: How entities are identified on a network
- Error control: Ensuring data integrity during transmission
- Flow control (and congestion): Regulating the rate of data flow to prevent network overload
- Statistical multiplexing: Sharing network resources among multiple users
- Routing: Determining the optimal path for data across the network
- Scalability: Network's ability to handle increasing demand
- Quality of Service (QoS): Guarantee certain performance characteristics (real-time)
- Reliability: Data integrity and delivery
- Security: Protecting data from unauthorized access
Connection-Oriented and Connectionless Services
-
Connection-oriented: Establishes a dedicated path (circuit) before data transmission
- Like a phone call; modeled after the postal system
-
Connectionless: Each message carries the destination address; each message is independently routed
- Like sending a letter; modeled after the postal system
- Store-and-forward switching: Data is stored at intermediate nodes until the entire message is received before forwarding
- Cut-through switching: Data is forwarded as soon as the destination address is known, which can speed up the process
Service Primitives
-
Primitives: Basic operations for communication.
- LISTEN: Waits for an incoming connection
- CONNECT: Establishes a connection
- RECEIVE: Receives a message
- SEND: Sends a message
- DISCONNECT: Terminates a connection
-
These primitives are used to implement simple connection-oriented services.
Services to Protocols Relationship
- Layer k+1 provides a service
- Layer k implements the protocols to support that service
- Layer k+1 communicates with a peer, using the protocols implemented by layer k
Protocol Hierarchies (Specific examples)
- Illustrates the use of a philosopher-translator-secretary architecture for communication between two locations.
Protocol Hierarchies (Example Information Flow)
- Explains the flow of information supporting a virtual communication in layer 5.
Connection-Oriented and Connectionless Services (Types of service)
- Offers six types of services: Reliable message stream, Reliable byte stream, Unreliable connection, Unreliable datagram, Acknowledged datagram, Request-reply. and their respective example application scenarios.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Test your knowledge on network software architecture, focusing on various layers and protocols. Topics include protocol hierarchies, design issues, and connection-oriented vs. connectionless services. Perfect for students enrolled in CSE306.
