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Home/ Questions/Q 3530
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Sneha Singh
Sneha SinghLevel 40
Asked: October 3, 20212021-10-03T22:59:36+05:30 2021-10-03T22:59:36+05:30

Which Osi Layer Is Responsible For Directing Data From One Lan To Another?

Which Osi Layer Is Responsible For Directing Data From One Lan To Another?
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    1. Maryam Khalid Bronze
      2021-12-01T19:59:02+05:30Added an answer on December 1, 2021 at 7:59 pm

      Which OSI layer is responsible for directing data from one LAN to another?

      • Physical layer.
      • Network layer.
      • Transport layer.
      • Datalink layer.

      Answer: The layer which is responsible for directing the data from one LAN to the other is the Network layer of the OSI model. Let’s understand the function and the design of the network layer in the mode so that it will be easier for you to understand.

      What is the network layer?

      The function of the subnet is maintained by the network layer. The basic purpose of the network layer is to transfer the packets across the destination to multiple links. When the computers are connected to the same link then there is no need for the network layer. It tells about the path or routes them to from one end to the other across network channels as a network layer.

      The packets division of the departing message in packets forms and gather the incoming message to the higher level. Due to the broadcast, the problem of routing is easy that’s why the end of the network layer is not much or thin.

      The function of the network layer

      The function of the network layer is given in the following section:

      • Related to the packet and the message switching the network translates the IP address (logical address) to the MAC (physical address) connected with the circuit.
      • The process for the routing of the packets to the destination port is controlled by the network layer, gateways are also included in it.
      • The services of the connection are also present by the network layer such as the flow control, network layer control of errors, and sequence for the packets.
      • The network layer splits bigger packets into smaller packets.

      Issue related to design with the network layer

      • A key design problem is determining the packet’s movement toward the destination address. The routes are formed on the base of the static table which is connected to the network layer and does not change easily. These might be dynamic to determine the new route for the packets to show that the load on the network is high.
      • If at the subnet many packets are present then there is a chance that they will move toward the other route by forming the bottlenecks and the control of it are also belong to the network layer.
      • The QoS (Quality of service) also belong to the network layer such as the delay, transmit time, and the jitters.
      • During the packet’s movement from one network to the other destination network various problems arise which are listed below:
      1. The addressing of the destined network is different from the first.
      2. Sometimes because of the packet size, the destination network may not accept the packets.
      3. Maybe there is a difference in the protocol.
      • Everything depends on the network layer to handle these issues and accept the different networks to be interconnected with each other.

      In the end, I must say that the OSI model gives the service to transfer the information from one layer to the other very smoothly. And the information to the destination port is readable.

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