Answer:
The ARPANET was the first network that provided commercial internet services. And also it was the first network to make use of the TCP/IP protocols. However, you need to know that the first ISP or the internet service provider was the Telenet, and it was the first commercial version of the ARPANET which was introduced in the year 1974. And this service started its service for the customers in the year 1989.
Explanation:
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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.
Answer:
To sum up all the advantages of using the relational database over any other type of database, a relational database helps in maintaining the data integrity, data accuracy, reduces data redundancy to minimum or zero, data scalability, data flexibility and facilitates makes it easy to implement security methods.
Explanation:
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Answer:
CPU scheduling is a process which allows one process to use the CPU while the execution of another process is on hold(in waiting state) due to unavailability of any resource like I/O etc, thereby making full use of CPU. ... The selection process is carried out by the short-term scheduler (or CPU scheduler).
Answer: An undirected graph is the graph that has the connection of the objects in the form of bidirectional edges.This graph is formed for by the attachment of the collection of the objects which get displayed in the form of network and thus, also known as the undirected graph.
The graph is formed by the nodes or objects getting connected and form edges or link(which is typically in the form of line).
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