There are 2 sub-categories as mentioned below:
Site-to-Site VPN: A Site-to-Site or Router-to-Router VPN is commonly used in large companies having branches in different locations to connect the network of one office to another in different locations. It is a low-cost solution and provides a wide range of connectivity. It serves as an alternative to dial-up connections or ISDN (Integrated Services Digital Network) connections. Access VPN: Access VPN is used to provide connectivity to remote mobile users and telecommuters. VPN encrypts the internet traffic and disguises the online identity. VPN keeps an organization’s information secured against any potential threats or intrusions by using virtualization. VPN is used for secure transactions and confidential data transfer between multiple offices located in different geographical locations. VPN is used to connect offices in different geographical locations remotely and is cheaper when compared to WAN connections. The below diagram shows an organizational WAN network over Australia created using VPN: VPN (Virtual Private Network) 5. By using the VPN, a client can connect to the organization’s network remotely. It allows the creation of a secured tunnel (protected network) between different networks using the internet (public network). VPN or the Virtual Private Network is a private WAN (Wide Area Network) built on the internet. Tell me something about VPN (Virtual Private Network) The below diagrams explain both wireless and wired LAN. Wireless LANs are very popular these days for places where installing wire is difficult. wireless LAN (no wires involved achieved using Wi-Fi) and wired LAN (achieved using LAN cable). There are two different types of LAN networks i.e. When LANs are used by companies or organizations, they are called enterprise networks. LANs are widely used to connect computers/laptops and consumer electronics which enables them to share resources (e.g., printers, fax machines) and exchange information. The Internet is also called the Network of WANs. It is also known as the Internet which connects the globe using satellites. It spans a large geographical area, often a country or continent. It is a privately owned network that operates within and nearby a single building like a home, office, or factory Let devices connect and communicate over the range of a person. The below diagram would help to understand the same: Network Types 2. Network types can be classified and divided based on the area of distribution of the network. But, have you ever thought about the internet? The Internet is a network of a network connecting all different network-enabled devices which enable data and information sharing between them and that makes computer networks a core part of our life and technical interviews.īelow is the list of all commonly asked networking questions in technical interviews from basic to advanced level.īasic Networking Interview Questions 1. 
Have you ever heard of the Internet or NET? I guess you have, as you are already reading this article on Interviewbit surfing through the internet. Why is the computer network so important? As the name suggests the computer network is a system of peripherals or computers interconnected with each other and has a standard communication channel established between them to exchange different types of information and data. What happens when you enter in the web browser?Īccording to Merriam Webster, Network is usually an informally interconnected group or association of different entities like a person, computers, radio stations, etc.įor example, Dominos has a network of 1232 branches across India. What are Unicasting, Anycasting, Multicasting and Broadcasting? What is the difference between the ipconfig and the ifconfig?
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Differentiate the MAC address with the IP address
What is the MAC address and how is it related to NIC? What is the use of a router and how is it different from a gateway? What are the HTTP and the HTTPS protocol? Differentiate OSI Reference Model with TCP/IP Reference Model Define the 4 different layers of the TCP/IP Reference Model
Define the 7 different layers of the OSI Reference Model What are Private and Special IP addresses? What is an IPv4 address? What are the different classes of IPv4? Define different types of network topology
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