Chapter 2-OSI model flashcards

Question	Answer
Which layer determines the availability of communicating partners	Application Layer
What is the information called all the way down the OSI stack	PDU (Protocol Data Unit)
What is an acronym for the OSI model	Please Do Not Throw Sausage Pizza Away, or All People Seem To Need Data Processors
What is the acronym for data from Transport layer down and what do they stand for	Some People Fear Birthdays (Segments, Packets, Frames, Bits)
Which layer do UDP and TCP reside in?	Transport
You are connected to a server on the Internet and you click a link on the server and receive a time-out message. What layer could be the source of this message?	Application
At which layers of the OSI model do bridges, hubs, and routers primarily operate, respectively?	Data Link, Physical, Network
Describe Flow Control	key words: buffer, full signal, segments processed, all clear signal
What is a virtual circuit also known as?	Three way handshake
Describe Acknowledgements	key words: positive acknowledgement with retransmission, requests any lost segments,
Describe Windowing	key words: number of segments per transmission before positive acknowledgement
What are the two types of packets used at the network layer?	Data packets and route-update packets
What 3 pieces of information are held in a routing table?	Network Address, interface, and metric
What is the process of adding headers and trailers as the PDU goes down the OSI stack?	Encapsulation

Resource summary

	Created by Joshua Snider over 10 years ago