OSI Model Flashcards
PDU (Protocol Data Unit) in the application layer
Data
PDU (Protocol Data Unit) in the Transport Layer
Segment
PDU (Protocol Data Unit) in the Internet Layer
Packets
PDU (Protocol Data Unit) in the Network Access Layer
Frames
Layer 2 of the OSI Model?
Data-Link
Layer 4 of the OSI Model?
Transport
Layer 5 of the OSI Model?
Session
Layer 6 of the OSI model?
Presentation
Layer 7 of the OSI Model
Application
What three layers of the OSI Model are combined to create the Application Layer in the TCP/IP Stack?
Application, Presentation, and Session
What two layers are combined in the OSI model to form the Network Access Layer in the TCP/IP Stack?
Data Link and Physical Layers
What is the Network Layer in the OSI Model referred to in the TCP/IP stack?
Internet Layer
What OSI layer establishes availability of intended communication partners? What are its PDUs called?
Layer 7 - The application Layer - Data
What OSI layer manages data exchange b/t layers & offers reporting of upper layer problems?
Layer 5 - Session
What layer of the OSI model determines if UDP or TCP is used?
Layer 4 - transport
What is the mode when the switch prompt is switch>
user exec mode
What is the mode of the switch after you enter enable (switch#)
privelege exec mode
What is the mode on the switch after entering config t? switch(config)#
Global configuration
Where is the IOS image stored?
flash
Where is the startup config stored?
NVRAM
What layer of the OSI model is responsible for flow control and error recovery? What are its PDUs called?
Transport Layer / Segments
What allows a single sender to send multiple streams of traffic to varying hosts over a single circuit? What layer?
Session Multiplexing - transport layer
If a sender sends a packet with a destination of port 80 and a source of 1500, what will the packet be on its return?
Source of 1500 and destination of 80
Port number and TCP/UDP for FTP?
21 - TCP
