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Q. Illustrate Data-Link Layer in osi layers model?
Data-Link Layer: This layer takes the data messages or frames from the Network Layer and gives for their actual transmission. At the receiving computer, this layer gets the incoming data and sends it to the network layer for handling. The Data-Link Layer also gives error-free delivery of data between the two computers by using the physical layer. It does this by covering the data from the Network Layer into a frame, which adds error detection information. At the receiving computer, the Data-Link Layer reads the incoming frame, and makes its own error detection information based on the received frames data. After receiving the complete frame, it then compares its error detection value with that of the incoming frames, and if they match, the frame has been received properly.
Q. Explain the types of Security Threats? (a) Normal Flow (b) Interruption: An asset of a system develops into unavailable or unusable. (c) Interception: A few unaut
objective practical questios answers
We studied Dijkstra's link-state routing algorithm for computing the unicast paths that are individually the shortest paths from the source to all destinations. The union of these
Network layer duties Internetwork - Physical and Data link layers are jointly responsible for data delivery on the network from node to node
Hardware difficulty It refers to the price of hardware logic like connectors, wires, switches, arbiter etc. that are required for execution of interconnection network.
Physical layers defines with synchronizing the 1s and 0s on the wire.
What is a computer network? Computer Network is a collection of distributed intelligent devices that are connected with each other with transmission media for the purpose of da
IP plus port (IP on layer 3 and port on Layer 4 - In Encapsulation, socket base decision on Network Layer -Layer 3)
stop and wait arq
CYCLE OF BRIDGES: A bridges network can join several segments. One bridge is useded to connect every segment to the rest of the bridge network. This is given in the figure be
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