PreciStat It Solutions Network Engineer Interview Questions and Answers

Access to remote router can be obtained through secure methods like SSH or VPN.

• Use SSH (Secure Shell) to remotely access the router

• Set up a VPN (Virtual Private Network) connection to access the router securely

• Ensure proper authentication and authorization protocols are in place

A port number is a communication endpoint in networking. Public ports are accessible from the internet, while private ports are only accessible within a local network.

• Port numbers range from 0 to 65535 and are used to identify different services or processes on a network.

• Public ports are exposed to the internet and allow external communication, like port 80 for HTTP.

• Private ports are used for internal communication wit...read more

DDNS stands for Dynamic Domain Name System. It is used to automatically update the IP address linked to a domain name.

• DDNS allows a device with a changing IP address to have a consistent domain name.

• It is commonly used for remote access applications like VPNs or security cameras.

• DDNS services periodically update the IP address associated with a domain name.

• Examples of DDNS providers include No-IP, DynDNS, and DuckDNS.

DHCP stands for Dynamic Host Configuration Protocol. It is used to automatically assign IP addresses to devices on a network.

• DHCP is used to assign IP addresses, subnet masks, default gateways, and DNS servers to devices on a network.

• DHCP servers are typically configured on routers, switches, or dedicated DHCP servers.

• DHCP configuration involves setting up a range of IP addresses that can be assigned, lease durations, ...read more

HTTP is unsecured protocol while HTTPS is secured protocol using SSL/TLS encryption.

• HTTP stands for Hypertext Transfer Protocol, while HTTPS stands for Hypertext Transfer Protocol Secure.

• HTTP operates on port 80, while HTTPS operates on port 443.

• HTTPS encrypts the data transferred between the client and server using SSL/TLS, while HTTP does not provide encryption.

• HTTPS is more secure for transmitting sensitive informat...read more

VLAN stands for Virtual Local Area Network. It is a network of computers that behave as if they are connected to the same switch, even if they are not physically located on the same network switch.

• VLANs are used to segment network traffic and improve network performance and security.

• They are configured on network switches or routers.

• VLAN configuration involves assigning ports to specific VLANs and setting up VLAN trunk...read more

To check public IP Address in a network, use online tools, command line tools, or network devices.

• Use online tools like 'WhatIsMyIP.com' or 'IPChicken.com'

• Use command line tools like 'ipconfig' on Windows or 'ifconfig' on Linux

• Check network devices such as routers or firewalls for public IP address