Chapter 1 - Intro. to Data Communications

Question 1

ISP

Answer 1

Internet Service Provider

Question 2

Mbps

Answer 2

Million bits per second

Question 3

First Industrial Revolution

Answer 3

Revolutionized the way people worked at the end of the 18th century by introducing machines, steam and water power. New companies and industries emerged, and old ones died off.

Question 4

Second Industrial Revolution

Answer 4

late 19th century is known for starting mass production, electricity, and the telephone.

Question 5

Third Industrial Revolution

Answer 5

he second half of the 20th century, is revolutionizing the way people work through electronics and information technology (IT) to automate production.

Question 6

Fourth Industrial Revolution

Answer 6

Currently Underway
Builds on the technological advances of the third Industrial Revolution.
Deeply rooted in the Internet of Things and digitization.

Question 7

What technology enables technologies such as; cloud, big data, big data analytics, and the Internet of Things, to communicate?

Answer 7

The high-speed data communication network, that is, the Internet

Question 8

Why is Data communications and networking a global area of study?

Answer 8

Because the technology enables global communication and because new technologies and applications often emerge from a variety of countries and spread rapidly around the world.

Question 9

Phishing Attacks

Answer 9

emails that look real but instead take you to fake websites

Question 10

Ransomware

Answer 10

software apps that appear to be useful but actually lock your computer and demand a payment to unlock it

Question 11

What four core capabilities does IT have within organizational settings?

Answer 11

1. Storing and retrieving data
2. Analyzing and visualizing data
3. Automating data operations
4. Protecting data

Question 12

Data communications

Answer 12

Data communications is the movement of computer information from one point to another by means of electrical or optical transmission systems. Such systems are often called data communications networks

Question 13

What are the three basic hardware components of a network?

Answer 13

1. A server (e.g., personal computer, mainframe)
2. A client (e.g., personal computer, terminal)
3. A circuit (e.g., cable, modem)

Question 14

The server…

Answer 14

stores data or software that can be accessed by the clients. In client–server computing, several servers may work together over the network with a client computer to support the business application.

Question 15

The client…

Answer 15

is the input–output hardware device at the user’s end of a communication circuit. It typically provides users with access to the network and the data and software on the server.

Question 16

The circuit…

Answer 16

is the pathway through which the messages travel. It is typically a copper wire, although fiber-optic cable and wireless transmission are becoming common. There are many devices in the circuit that perform special functions such as switches and routers.