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A network consists of multiple computers communicating with one another over a shared network medium. Topology refers to the shape of a network, or the network's layout. In this unit, you have learnt about the various topologies and its structure. The OSI model is a seven-layer model for communications and computer network protocol design. In this unit, you have learnt about the OSI model and the functions of the various layers.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoThe 6th layer of OSI Model i.e the PRESENTATION layer is the layer which deals with compression and decompression of the data depending on the standards agreed upon on each network side (Sender and receiver).
Presentation Layer also performs other functions too.
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Wiki User
∙ 11y agoFor Translation: The Presentation layer is essentially a translator.
For Encryption: Presentation layer for data encryption and transport layer for web browser encryption. Also in theory, encryption can be done in any layer, but in practice three layers seem the most suitable : physical, transport, and presentation.
For Compression: the Presentation layer is the layer which deals with compression and decompression of the data depending on the standards agreed upon on each network side (Sender and receiver).
Wiki User
∙ 11y agoThe presentation layer provides:
- Character code translation: for example, ASCII to EBCDIC.
- Data conversion: bit order, CR-CR/LF, integer-floating point, and so on.
- Data compression: reduces the number of bits that need to be transmitted on the network.
- Data encryption: encrypt data for security purposes. For example, password encryption.
Wiki User
∙ 9y agoThe presentation layer of the OSI model is concerned with data compression and encryption. It also handles the format in which data is presented.
Wiki User
∙ 13y agoWiki User
∙ 11y agoPresentation Layer
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∙ 13y agopresentation layer
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∙ 12y agolayer 5
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Is it compulsory that compression and encryption and translation functions will be used during communication?
The sixth OSI model layer is called the presentation layer. Protocols at this layer take care of manipulation tasks that transform data from one representation to another, such as translation, compression and encryption. In many cases, no such functions are required in a particular networking stack; if so, there may not be any protocol active at layer six.http://www.tcpipguide.com/free/t_PresentationLayerLayer6.htm
Do you backup 40 gb of data on CD-r or DVD-r?
Both will work if you are patient. It will take about 57 CDs to back up the data It will take about 9 single layer DVDs to back up the data It will take about 5 dual layer DVDs to back up the data
What is difference between symmetric and asymmetric compression?
symmetric compressionA data compression technique that takes about the same amount of time to compress as it does to decompress.asymmetric compressionA data compression technique that typically takes more time to compress than it does to decompress. Some asymmetric compression methods take longer to decompress, which would be suited for backup files that are constantly being compressed and rarely decompressed.
What are differences between the Session layer and presentation layer of the OSI model?
The session layer is meant to store states between two connections, like what we use cookies for when working with web programming. The presentation layer is meant to convert between different formats. This was simpler when the only format that was worried about was character encoding, ie ASCII and EBCDIC. When you consider all of the different formats that we have today(Quicktime, Flash, Pdf) centralizing this layer is out of the question. TCP/IP doesn't make any allocation to these layers, since they are really out of the scope of a networking protocol. It's up to the applications that take advantage of the stack to implement these.
How many layers does osi have?
The OSI Model have 7 Layers L7 Application = Just remember that protocols that require the end user to enter a request are L7 protocols. L6 Presentation = Just remember that there are four primary tasks that L6 is concerned with: Compatibility with the OS, Proper encapsulation of data for network transmission, Data formatting(ascii or binary), & Data encrypton, Compression, and Translation. L5 Session = L5 is the "Manager" of the twoway communication b/w two remote host. L4 Transport = Just remember that Segment take place at this layer. L3 Network = Just remember that data are place into Packet at this layer. L2 Data Link = Just remember that Packet are put into Frame at this layer. L1 Physical = DATA, SEGEMENT, PACKET, and FRAME are put into Ones and Zeros!
What are the differences between segment packet and frame?
Theoretically Data Link Layer puts packet into frame by adding header and tail to the packet but how is it possible when you take into consideration CCSDS packet definition:"A packet is a block of data with length that can vary between successive packets, ranging from 7 to 65,542 bytes, including the packet header.Packetized data are transmitted via frames, which are fixed-length data blocks. The size of a frame, including frame header and control information, can range up to 2048 bytes."According to this, frame is smaller than packet, so how can you put packet into frame??
How does data encapsulation allows data to be transported across the network?
The physical address is added
In which OSI layer does error handling take place?
The data link layer (2nd layer), the network layer (3rd layer) and the transport layer (4th layer) each handle their own specific errors, which should prevent errors in both directions. Any untrapped errors will result in a corrupt transmission which may or may not be handled by the appropriate endpoint, dependant upon the protocol.
Which OSI layer does error handling take place?
The data link layer (2nd layer), the network layer (3rd layer) and the transport layer (4th layer) each handle their own specific errors, which should prevent errors in both directions. Any untrapped errors will result in a corrupt transmission which may or may not be handled by the appropriate endpoint, dependant upon the protocol.
Why would a 96 Sebring crank but act like it has no compression when the timing belt is ok?
Maybe it has no compression--take compression test
Why is there no compression on a 2 stroke engine?
There is no separate compression stroke on a 2 stroke engine, but there is compression - the intake and compression take place on the same staroke, the intake on the first part and compression on the later part.
What are the devices that work on physical layer?
1) Physical layer is the first layer. 2) The simplest ones operate at the physical layer are: Repeaters, conventional hubs and transceivers. 3)These devices have absolutely no knowledge of the contents of a message. They just take input bits and send them as output. Cheers, AceInfo Solutions.
