NTT Data Computer Hardware & Networking Engineer Interview Questions and Answers for Experienced

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

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

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