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In OSI 7 layer model, a header, or possibly a trailer, can be added to the data unit at each layerI 7 layer, but we will define a simple virtual packet which contains only 8bit data value without any header and trailer
Each packet contains one pixel information of the lenna256 image. We defined the 3 structures in "CPacketStruct.h" to express a packet as bit stream. Left structure is defined for bit stream for error detection code and right structure is defined for bit stream for error correction code. There is additional bit stream without any code, and the data structure of bit stream with no code is same as the Packet structure in "CPacketStruct.h"
typedef struct {
BIT dat1[5];
BIT dat2[5];
} EDBitStream;
BIT dat1[7];
BIT dat2[7];
} ECBitStream;
Fig. Bit stream structure
One pixel data is represented with 8 digits, and each 4 digits are divided into dat1, and dat2. In bit streams for error detection
Ex) 1 Pixel data = 100010012
Normal Packet
(Packet is not encoded)
Encoded Packet by Parity Bit
Encoded Packet by hamming code
[1000 1001]
[Pixel Data ]
[10001 10010 ]
[ (1000)+Parity || (1001) +Parity ]
[1101000 0111001 ]
[ (1000)* G || (1001) * G ]
In Packet structure,
NCBitStream
In EDBitStream Structure
In ECBitStream Structure
A default route is used if there is not a particular entry in the routing table for the destination.
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Q. Data Link Layer Responsibilities? - Defines frames into manageable data units - Physical addressing - Flow control - Error control - Access control Nod
DEFINE
Q. Illustrate the Advantages of VLANs? - Cost and time reduction in moving stations from one group to another - Creation of virtual workgroups - Security Position of
What is a LAN? A LAN is a Local Area Network, within a single building or a specific confined space. LANs typically comprise only one transmission media type like coaxial cable
Interconnection Network An interconnection network is designed for transferring data between two processors in a Multi-stage network. Memory bottleneck is a fundamental limitat
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