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Home/ Questions/Q 4935
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Sneha Singh
Sneha SinghLevel 40
Asked: February 3, 20222022-02-03T08:25:54+05:30 2022-02-03T08:25:54+05:30

Which Function Is Supplied By The Access Layer In A Three-Layer Network Design?

Which Function Is Supplied By The Access Layer In A Three-Layer Network Design?
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    1. Maryam Khalid Bronze
      2022-03-02T14:03:14+05:30Added an answer on March 2, 2022 at 2:03 pm

      Which function is supplied by the access layer in a three-layer network design?

      • Network access.
      • Topology.
      • Connectivity of the backbone.
      • Routing.

      Answer: The major goal of the devices present in the access layer is to provide network access to the users. While the services provided by the distribution layer are routing and the policy functions. The core layer is responsible for the backbone connectivity.

      Along with the diversity in technology, it also become complicated to handle. For the reliable infrastructure of the network, Cisco has discovered the three-layer hierarchical model, which helps to design, maintain the scalability, reliability and also reduce the cost of developing the network.it has three with its features. The layer is listed below:

      • Access layer.
      • Distribution layer.
      • Core layer.

      The first layer is the access layer which allocates the end-user access to the network.it also works by connecting the end devices as PCs, IP phones, printers, and scanners with the network. The end-user devices in the network use a different kinds of protocols to find each other, eliminate the loops and also exchange the information. Different kinds of services are the security policies are configured and implemented in this access layer.

      Some of the access layer functions are described below:

      • It connects different types of end devices with the LAN network.
      • It provides layer-2 switching and also implements different switching services such as spanning tree, ARP, QoS, and access control of the virtual.
      • It can prevent unauthorized devices’ access to the LAN and also impose security policies. for example, port security, DHCP snooping, and MAC address configuration.

      The switches which are connected in this layer are called access switches. The End-devices in the LAN network is connected with the help of these switches.in simple words, the access switch work by moving the traffic between the connected devices and the LAN.

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