HCL Infosystems Computer Hardware & Networking Engineer Interview Questions and Answers

There are 5 classes of IP addresses in networking: Class A, Class B, Class C, Class D, and Class E.

• Class A addresses have a range from 1.0.0.0 to 126.0.0.0 and are used for large networks.

• Class B addresses have a range from 128.0.0.0 to 191.255.0.0 and are used for medium-sized networks.

• Class C addresses have a range from 192.0.0.0 to 223.255.255.0 and are used for small networks.

• Class D addresses have a range from 224...read more

A gateway is a hardware device that connects two dissimilar types of networks, allowing data to be sent and received between them.

• Gateway acts as an entry and exit point for data traffic between networks

• It translates data from one format to another to enable communication between networks

• Examples include routers, switches, and firewalls that serve as gateways between LAN and WAN networks

An operating system is system software that serves as an interface between users and computer hardware.

• Operating system is responsible for managing computer resources and providing a platform for running applications.

• It controls and coordinates the hardware and software components of a computer system.

• Examples of operating systems include Windows, macOS, Linux, and Android.

• Operating systems provide services such as fil...read more

There are six commonly known types of servers: Web, Application, Database, Mail, FTP, and DNS servers.

• Web servers handle HTTP requests and deliver web pages to clients.

• Application servers provide a platform for running applications and managing resources.

• Database servers store and manage databases, allowing access and retrieval of data.

• Mail servers handle email communication, including sending, receiving, and storing m...read more