OSI Layers
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Application | Network services to the software applications: Redirectors (network service)
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| Presentation | Formats the data/syntax negotiation: agree on a common language
Encryption: Scrambles the data to be unreadable
File compression: data is replaced by symbols/characters
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| Session | sets up session, maintains communication, terminates the session
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| Transport | Segments: segments(src) and reassembles(dest) the data using sequence numbers
Connection oriented(TCP): three way handshake(Syn, Syn/Ack, Ack)
Connectionless(UDP): no retransmissions or ACKs, thus unreliable
Reliability/error recovery
Flow Control
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| Network | Handles logical addressing(i.e. IP Addressing)
Routing: best path determination
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| Data Link | LAN 2 sublayers(ethernet)
Logical Link Control: upper layer helps identify the layer 3 portal
Media Access Control: provides access to the media(broadcast/contention based, token passing)
Provides a physical address(Ethernet(LAN):MAC address, Frame
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| Physical | Electrical, mechanical, functional process of encoding/decoding bits onto the medium
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
farmerj
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