Question

1. Describe one common of lan and wlan
2. Describe fully the purpose or use of proxy server
3. Describe fully the purpose or use of the firewall

Answer 1

Hyy Dude

Ans 1 : A LAN (local area network) is a group of computers and network devices connected together, usually within the same building. By definition, the connections must be high speed and relatively inexpensive (e.g., token ring or Ethernet). Most university departments or research institutes are on LANs.

A LAN (local area network) is a group of computers and network devices connected together, usually within the same building. By definition, the connections must be high speed and relatively inexpensive (e.g., token ring or Ethernet). Most university departments or research institutes are on LANs.WLANs (wireless LAN) provide high speed data communication in small areas such as a building or an office. It allows users to move around in a confined area while they are still connected to the network. Wireless LANs share a similar origin with Ethernet LANs. Most modern WLANs are based on IEEE 802.11 standards and are marketed under the Wi-Fi brand name such as Airtel Wi-Fi or Idea Wi-fi or Motorola's ALTAIR.

Ans 2 : A proxy server acts as a gateway between you and the internet. ... Proxy servers act as a firewall and web filter, provide shared network connections, and cache data to speed up common requests. A good proxy server keeps users and the internal network protected from the bad stuff that lives out in the wild internet.

Ans 3 : A firewall is a system that provides network security by filtering incoming and outgoing network traffic based on a set of user-defined rules. In general, the purpose of a firewall is to reduce or eliminate the occurrence of unwanted network communications while allowing all legitimate communication to flow freely.

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