Answer:
"HELO" would be the correct choice.
Explanation:
- SMTP seems to be the protocol for transferring emails through one messaging service toward the next.
- HELO seems to be an SMTP command transmitted by someone with an email server that recognizes yourself when you communicate to some other email server to begin the mail transmitting procedure. It is accompanied either by a domain name including its email address that is sent.
<span>It represents formatting. This is applied in order to organize data in a way that is easier to understand by the users or the people that the user is trying to show the information to. This can help create a clearer picture of the data that is being used.</span>
Answer:
There are different phases of railroad expansion with the innovations in technology.
Explanation:
Few of the technological innovations are described below that leads in railroad expansion more rapid.
1. Centralized Traffic control (CTC) is introduced in 1960's that is used to control the traffic on railroads using different signal control.
2. In 1990's after computer technology involvement, railway ticket and reservation system is automate and being centralized. That makes the railroad expansion improve.
3. Bullet train technology has been introduced, that makes the railway trains more faster.
4. Electric trains has been introduced to use green energy and reduce the dependency on the fuel to make environment clean and green.