IT Help Desk Support Engineer Interview Questions and Answers

Various network protocols include TCP/IP, HTTP, FTP, SMTP, DNS, DHCP, and more.

• TCP/IP is the most commonly used protocol for internet communication

• HTTP is used for web browsing and transferring data between web servers and clients

• FTP is used for file transfer between computers

• SMTP is used for email communication

• DNS is used for domain name resolution

• DHCP is used for automatic IP address assignment

• Other protocols include SSH, Telnet, SNMP, and more

OSI layer is a conceptual model that describes the communication functions of a network.

• OSI stands for Open Systems Interconnection.

• It has 7 layers, each with a specific function.

• Layer 1 is the physical layer, responsible for transmitting raw data.

• Layer 2 is the data link layer, responsible for error-free transmission of data.

• Layer 3 is the network layer, responsible for routing and addressing.

• Layer 4 is the transport layer, responsible for end-to-end communication.

• Layer 5 is...read more