IPv4 addresses are divided into how many classes?

How many layers does a TCP/IP Protocol stack have?

What layer of the OSI model does ICMP work on ?

The TCP 3-Way handshake contains three messages that are exchange between two hosts before any application data is transmitted, what does a SYN-ACK message indicate?

Which layer of the OSI model is responsible for establishing, managing, and terminating communications between two computers?

Which of the following protocol belongs to "Exterior Gateway Protocol"?

________ is a very well known free voip provider

An organization that hires cloud services ________.

A ________ detects the speed that a given device can handle and communicates with it at that speed.

A _____ sends messages through several connected lans or to a wide-area network.

A ____ measures the time a package takes to process a certain number of transactions