STJ Electronics Engineer- Customer Support Interview Questions and Answers

HTTP works on port 80 by default.

• HTTP (Hypertext Transfer Protocol) is the protocol used for transmitting data over the internet.

• Port 80 is the default port used for HTTP communication.

• However, HTTPS (HTTP Secure) uses port 443 by default.

• Other ports can also be used for HTTP communication, but they need to be specified explicitly.

• For example, if a website uses port 8080 for HTTP communication, the URL would be http://

OSI stands for Open Systems Interconnection. It is a conceptual model that describes how data is transmitted over a network.

• OSI model has 7 layers, each with a specific function

• It is a reference model, not an implementation

• Each layer communicates with the layer above and below it

• Examples of protocols that operate at different layers include TCP/IP, HTTP, and FTP

DHCP is a network protocol that assigns IP addresses to devices. DNS is a system that translates domain names to IP addresses.

• DHCP stands for Dynamic Host Configuration Protocol

• It automatically assigns IP addresses to devices on a network

• It also provides other network configuration information

• DNS stands for Domain Name System

• It translates domain names to IP addresses

• This allows devices to access websites and other reso...read more