Solution: Threads are sequential units of controlled execution for applications. A thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.

Solution: A three-way handshake is a method used in a TCP/IP network to create a connection between a local host/client and server. It is a three-step method that requires both the client and server to exchange SYN and ACK (acknowledgment) packets before actual data communication begins.

Solution: A three-way handshake is a method used in a TCP/IP network to create a connection between a local host/client and server. The handshake consists of a Synchronize, Synchronize-Acknowledge, and Acknowledge message to be passed between the browser and the remote server.

Solution: The handshake allows the server to acknowledge and accept the attempt. The handshake consists of a Synchronize, Synchronize-Acknowledge, and Acknowledge message to be passed between the browser and the remote server.

Solution: The transport layer is the layer in the open system interconnection (OSI) model responsible for end-to-end communication over a network. The Transport layer is where our TCP (or UDP) communication takes place.

Solution: The status code 200 indicates a successful response from the server. A 400 status code represents a bad request.

Solution: The 500 status code, or Internal Server Error, means that server cannot process the request for an unknown reason. Sometimes this code will appear when more specific 5xx errors are more appropriate.

Solution: An application layer is an abstraction layer that specifies the shared communications protocols and interface methods used by hosts in a communications network. The Application layer handles the top-level communication that the client and servers use, like HTTP and SMTP for email clients.

Solution: The HTTP 404, 404 Not Found, and 404 error message is a Hypertext Transfer Protocol (HTTP) standard response code, in computer network communications, to indicate that the client was able to communicate with a given server, but the server could not find what was requested.

Solution: Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP). IPv6 is the most recent version of Internet Protocol. The maximum size of an IP packet for IPv4 or IPv6 is 65535.