OCS Group Network Engineer Interview Questions and Answers

A network is a group of interconnected devices that communicate with each other to share resources and information.

• Networks can be wired or wireless

• They can be local (LAN) or wide area (WAN)

• They use protocols such as TCP/IP to enable communication

• Examples include the internet, corporate networks, and home networks

NAT stands for Network Address Translation. It is a process of modifying IP address information in IP packet headers while in transit across a traffic routing device.

• NAT is used to allow devices on a private network to access the internet using a single public IP address.

• It can be used to hide the internal IP addresses of a network from the outside world.

• NAT can be implemented using different techniques such as static ...read more

A proxy is an intermediary server that acts as a gateway between a local network and the internet.

• A proxy server can be used to improve security by filtering traffic and blocking malicious websites.

• It can also be used to improve performance by caching frequently accessed resources.

• Proxy servers can be configured to allow or deny access to specific websites or resources.

• Examples of popular proxy servers include Squid, A