Term
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Definition
Application
Presentation
Session
Transport
Network
Data Link
Physical |
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Term
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Definition
| provides network services to end users, according to the applications they're using, its the only layer that users interact with directly. Includes transferring files, sending emails, and saving data to network servers |
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Term
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Definition
| HTTP, SNMP, SMTP, DNS, FTP, TELNET, NTP |
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Term
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Definition
| Ensure that data represented by one system can be interpreted by another system, for example they can convert special character data to ASCII, adds data compression and security related services like encryption and decryption |
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Term
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Definition
| Establishes connections between devices and application, maintains the connection, and then terminates or reestablishes it when required. Specifies the procedures for synchronizing data transfer between two devices with different data transmission rate. |
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Term
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Definition
| end to end data transmissions occur, also implements mechanisms for ensuring reliable data transfer,data integrity, and for correcting transmission errors. Manages connections with the two layers adjacent to it-the Network layer above it and the session layer below it. segments the data received from each session and passes it to the network layer in appropriate size and format |
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Term
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Definition
| Specifies how to route data from host on one network to host on another network based on the host network addresses |
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Term
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Definition
| Handles hardware addressing so that physically connected devices can be located. responsible for transferring data packets between adjacent network nodes without any errors, after sending the packets this layer waits for an acknowledgement from receiving devices. network switches operate at this layer. |
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Term
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Definition
| defines the physical media and specification a network uses when transferring data. for example it describes cables, connectors, or frequencies and modulation in wireless networks, network adapters, and access points. protocols at this layer receive fully formatted data frames from the data link and places them on the physical communications medium. It determines the mode and medium of data transmission which are factors that affect transmission speeds. |
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Term
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Definition
| SSL, TLS, ASN.1(ABSTRACT SYNTAX NOTATION ONE) |
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Term
| presentation file formats |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| IP, IGMP, ICMP, ARP, AND RIP |
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Term
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Definition
| POINT TO POINT(PPP), SERIAL LINE INTERNET PROTOCOL(SLIP), SYNCHRONOUS OPTICAL NETWORKING (SONET) |
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Term
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Definition
LLC-Logical Link Control
MAC-Media Access Control |
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Term
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Definition
| Encapsulating protocols can share the same media |
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Term
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Definition
| Defines how packets are transferred onto media, in contention based networks such as Ethernet, this sub layer is responsible for the contention scheme for Instance Carrier Sense Multiple Access(CSMA), and Collision Detection (CD) |
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Term
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Definition
| Ethernet, Fast Ethernet, Asynchronous transfer mode(ATM), Token ring, Fiber Distributed Data Interface (FDDI), and 802.11 WIFI standards |
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Term
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Definition
| consists of the upper three layers of the OSI mode, Application, Presentation, and session. connecting software programs to a network is the primary responsibility of this functional block |
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Term
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Definition
| made up of the lower four layers, Transport, network, data link, and physical. moving data on a network is the primary responsibility of this functional block |
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Term
| encapsulation process step 1 |
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Definition
| user information is converted to data |
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Term
| encapsulation process step 2 |
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Definition
| data is converted to segments |
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Term
| encapsulation process step 3 |
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Definition
| data segments are converted to packets or datagrams |
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Term
| encapsulation process step 4 |
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Definition
| datagrams or data packets are converted to frames for transmission |
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Term
| encapsulation process step 5 |
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Definition
| frames are converted to bits |
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