Tech Mahindra Technical Support Engineer Interview Questions, Process, and Tips

To release previous IP assigned to a device, use the command 'ipconfig /release' in Windows or 'sudo dhclient -r' in Linux.

• Open Command Prompt or Terminal

• Type 'ipconfig /release' for Windows or 'sudo dhclient -r' for Linux

• Press Enter

• Wait for the command to complete

• The previous IP address will be released

To check DNS, IP, and GATEWAY, you can use command line tools like ipconfig (Windows) or ifconfig (Linux/Mac).

• For DNS, use the command 'ipconfig /all' on Windows or 'cat /etc/resolv.conf' on Linux/Mac.

• For IP, use the command 'ipconfig' on Windows or 'ifconfig' on Linux/Mac.

• For Gateway, use the command 'ipconfig' on Windows or 'netstat -nr' on Linux/Mac.

There are 5 classes of IP addresses: A, B, C, D, and E. Each class has a different range of IP addresses.

• Class A: 1.0.0.0 to 126.0.0.0

• Class B: 128.0.0.0 to 191.255.0.0

• Class C: 192.0.0.0 to 223.255.255.0

• Class D: 224.0.0.0 to 239.255.255.255

• Class E: 240.0.0.0 to 255.255.255.255

APIPA stands for Automatic Private IP Addressing. It is a feature in Windows operating systems that allows a computer to assign itself an IP address when DHCP is not available.

• APIPA assigns a unique IP address in the range of 169.254.0.1 to 169.254.255.254

• It is used when a computer cannot obtain an IP address from a DHCP server

• APIPA is enabled by default on Windows operating systems

• It is not recommended to use APIPA in...read more

A router connects multiple networks and directs traffic between them, while a switch connects devices within a network.

• Routers operate at the network layer (Layer 3) of the OSI model, while switches operate at the data link layer (Layer 2).

• Routers use routing tables to determine the best path for data to travel between networks, while switches use MAC addresses to direct data to the correct device within a network.

• Rout...read more

Topology refers to the arrangement of nodes and connections in a network. Common types include bus, star, ring, and mesh.

• Bus topology: all devices are connected to a single cable

• Star topology: all devices are connected to a central hub or switch

• Ring topology: devices are connected in a circular loop

• Mesh topology: every device is connected to every other device