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Various questions about OSI

Provides an interface between the communications software and any applications that need to communicate outside the computer on which the application resides. It also defines processes for user authentication. Layer 7
This layer’s main purpose is to define and negotiate data formats, such as ASCII text, EBCDIC text, binary, BCD, and JPEG. Encryption also is defined by OSI as a presentation layer service. Layer 6
Which layer provides a set of interfaces for applications to obtain access to network services? Application
This layer handles general network access, movement of data and error recovery for applications. Application
An example of software that resides at this layer include FTP, HTTP as well as client software such as Novell's client. Layer 7
This layer handles data format information for network communications. Presentation
This layer converts data into a generic format that can survive the rigors of transmission. Layer 6
This layer can handle protocol conversion, data encryption or decryption, character set issues and graphics commands. Presentation
A redirector that intercepts requests for service from the computer and sends them to the network for servicing operates at this layer Presentation
An example of functionality at this layer would be a Web browser displaying graphic files embedded in a Web page. Presentation
This layer can handle character conversion such as a carriage return in different systems such as PC, Linux and Unix. Layer 6
This layer is what permits two parties to hold ongoing communications. Layer 5
This layer handles session setup, data or message exchanges and teardown when the session ends. Layer 5
Some of the network functions handled by this layer include name lookup and user login and logout. Layer 5
Domain Name System resolution and NetBIOS name resolution operate at this layer. Layer 5
This layer manages the mechanics of an ongoing communication including identifying which side may transmit data when and for how long. Layer 5
This layer provides synchronization services between tasks on both ends of a connection. Layer 5
This layer manages the conveyance of data and flow control. Layer 4
This layer segments long data payloads into chunks that match the maximum packet size for the network medium. Layer 4
This layer makes sure that the recipient of transmitted data is not overwhelmed with more data than it can handle. Layer 4
The components that work at this layer include the TCP portion of TCP/IP and the SPX portion of IPX/SPX. Layer 4
This layer handles addressing messages for delivery. Layer 3
This layer translates logical network addresses into their physical counterparts. Layer 3
This layer decides how to route transmissions from sender to receiver. Layer 3
This layer is considered the traffic cop for network activity because it handles packet switching, data routing, and congestion control. Layer 3
Routers operate at this layer. Layer 3
This layer handles delivery of frames from sender to receiver through the Physical layer. Layer 2
The NIC driver operates at this layer. Layer 2
This layer is responsible for detecting errors in the transmission of frames. Layer 2
The hardware that operate at this layer are NIC cards and switches. Layer 2
This layer is responsible for converting bits into signals for outgoing messages. Layer 1
This layer manages the computer's interface to the network medium. Layer 1
This layer is where specification of all details for creating a network connection occur. Layer 1
The components working at this layer include all of the cables and connectors used on the medium, plus repeaters and hubs. Layer 1
This layer encodes ones and zeros, the timing and interpretation of signals sent across the medium. Layer 1
This layer usually provides services such as email, web browsing, and file transer services. Layer 7
This layer uses FTP, SNMP and POP3. Layer 7
Multimedia layer Presentation Layer
MP4, JPEG, GIF on this layer Layer 6
Encryption, decryption, and data compression take place at this layer Layer 6
The role of this layer is to setup, manager, and terminate sessions or dialogues between devies Layer 5
SQL, RPC, and NFS all work at the... Layer 5
Layer 1 Physical
Layer 2 Data Link
Layer 2A Data Link - MAC
Layer 2B Data Link - LLC
Layer 3 Network
Layer 4 Transport
Layer 5 Session
Layer 6 Presentation
Layer 7 Application
Created by: avv604