Chapter 1 - TCP/IP and OSI Networking Models Flashcards
What is the concept when two computers use a protocol (an agreed-to set of rules) to communicate with the same layer on another computer?
Same layer interaction on different computers.
What is the concept when on a single computer, one layer provides a service to a higher layer?
Adjacent-layer interaction on the same computer.
What is the final product of the 5 steps of encapsulation and where do each of the inputs come from?
DL-IP-TCP-Data-DL
What is the data encapsulated in the transport layer called?
Segment
What is the data encapsulated in the network layer called?
Packet
What is the data encapsulated in the data link layer called?
Frame
Which layer encapsulates data with both a header and a trailer?
Data link adds both a header and a trailer
What are the 7 layers of the OSI Model?
- Application 6. Presentation 5. Session 4. Transport 3. Network 2. Data Link 1. Physical
What are the 5 layers of the TCP/IP Model?
- Application 4. Transport 3. Network 2. Data Link 1. Physical
What are 6 benefits of a layered protocol specification?
- Less complex 2. Standard interfaces - Allowing multiple vendors to create products that fill a particular role 3. Easier to learn 4. Easier to develop - Reduced complexity allows easier program changes and faster product development. 5. Multivendor interoperability - Creating products to meet the same networking standards means that computers and network gear from multiple vendors can work in the same network. 6. Modular engineering - One vendor can write software that implements higher layers
The TCP/IP model uses terms like segment, packet, and frame. What terms does the OSI model use?
PDU or protocol data unit
What is the term that refers to the process of putting headers (and sometimes trailers) around some data?
encapsulation
