Tech Mahindra Technical Support Associate Interview Questions and Answers for Freshers

A router connects multiple devices to a network and directs traffic, while a modem connects a network to the internet.

• A router is used to create a local area network (LAN) and connect multiple devices to it.

• A modem is used to connect a network to the internet.

• A router directs traffic between devices on the network and manages the flow of data.

• A modem converts digital signals from the network into analog signals that can be transmitted over a phone or cable line.

• Examples of ro...read more

Hubs broadcast data to all connected devices, while switches only send data to the intended recipient.

• Hubs operate at the physical layer of the OSI model, while switches operate at the data link layer.

• Hubs are less expensive than switches, but switches offer better performance and security.

• Hubs are often used in small networks, while switches are used in larger networks.

• Example of a hub: Netgear 5-Port Fast Ethernet Unmanaged Switch

• Example of a switch: Cisco Catalyst 2960 Ser...read more

MAC address is a unique identifier assigned to network interfaces for communications on the physical network segment.

• MAC stands for Media Access Control

• It is a 48-bit address

• It is used to identify devices on a network

• It cannot be changed permanently, but can be spoofed temporarily

• Example: 00:1A:C2:7B:00:47

The OSI model is a conceptual framework that standardizes the functions of a communication system into seven layers.

• The OSI model stands for Open Systems Interconnection model.

• It was developed by the International Organization for Standardization (ISO) in 1984.

• The model is divided into seven layers, each responsible for specific functions.

• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer interacts with the layer above a...read more

Subnet mask is a 32-bit number used to divide an IP address into network and host addresses.

• It is used to identify the network portion of an IP address

• It is represented in decimal format or dotted decimal notation

• It is used in conjunction with IP addresses to determine network and host addresses

Command to check IP address

• Use 'ipconfig' command on Windows

• Use 'ifconfig' command on Linux/Mac

• Check 'ip addr show' on Ubuntu

Topologies refer to the way in which devices are connected in a network. There are several types of topologies.

• Bus topology

• Star topology

• Ring topology

• Mesh topology

• Tree topology

• Hybrid topology