The internet's growth relied on key technological developments like TCP/IP, the World Wide Web, and the Mosaic browser. These innovations made the Internet accessible and user-friendly, leading to its widespread use.
DARPA's packet-switching and advancements in digital infrastructure were also crucial.
The Internet, a network of networks, has its roots in several key technological developments that significantly contributed to its spread, known as the "democratization" of the Internet. This began with the creation of the protocol TCP/IP by Vinton Cerf and Bob Kahn in 1974, which allowed diverse computer networks to communicate.
In 1983, the Internet, initially a network for research centres and universities, began to expand. The first major boost came in 1990 with Tim Berners-Lee's invention of the World Wide Web, which made it easier to access and share information.
The second significant boost was in 1993 with the release of the first browser, Mosaic, which made navigating the web user-friendly and visually engaging, contributing to the rapid spread of internet usage from 1994 onwards.
Other critical developments included DARPA’s research on packet-switching technology in 1973, which enabled reliable data transmission over distributed networks, and the creation of digital infrastructures like microprocessors and fibre-optic cables around 1990. These breakthroughs made the efficient transfer of digital information across vast distances possible.
Productivity software that provides you with the ability to create, spell-check, edit, and format is considered ____ software.
E-mail is ________ communication, which means users do not have to communicate at the same time.
Answer: Asynchronous
Explanation:
Asynchronous communication is not based on clock signal rather the communication takes place in non -regular manner by specific synchronized clock.Texting, blogging, vlogging,emailing etc are the examples of asynchronous communication.This can take place from different place at any time.Therefore, E-mail is example of asynchronous communication which permits user to communicate through mails at any point of time
The tiny memory cards used by digital cameras and mobile devices are an example of ____ storage.
A source of DC voltage that converts light to voltage is a A. photovoltaic cell. B. generator. C. primary cell. D. lithium battery.
What port does rdp use by default and from what range of numbers should you select a private port number?
By default, RDP (Remote Desktop Protocol) uses port 3389. For selecting private port numbers, you should use the range from 49152 to 65535.
Remote Desktop Protocol (RDP) is a network protocol used to remotely connect to another computer. By default, RDP uses port 3389. This port number acts like an apartment number in a building, making sure that traffic is directed to the correct application on a server.
When selecting a private port number, it's crucial to choose from the range of 49152 to 65535, which is known as the dynamic or private port range. These port numbers are not assigned to any specific services and are available for any application to use.
Ports play a significant role in how applications communicate over networks, with different ports designated for different services like HTTP (port 80) and FTP (port 21), although these can sometimes be customized by administrators as needed.
Using ____ involves writing down all the steps you will use in a program.
The ampacity of a No. 12 aluminum wire with RHW insulation installed in a raceway that has 19 other wires is
A. 7 A.
B. 5 A.
C. 10 A.
D. 15 A.
The ampacity of a No. 12 aluminum wire with RHW insulation installed in a raceway with 19 other wires is most accurately 7 A, as the NEC dictates derating to 50% for more than 9 conductors, which is 7.5 A. We typically select the nearest standard size of overcurrent protection device below this value, giving us 7 A in this case.
Explanation:The student is asking about the ampacity of a No. 12 aluminum wire with RHW insulation when installed in a raceway with 19 other wires. The term ampacity refers to the maximum current an electrical conductor can handle before deteriorating under the heat caused by electrical resistance, which is an important consideration in electrical wiring installations. According to the National Electrical Code (NEC), the base ampacity of No. 12 aluminum wire is generally 15 amps. However, when multiple wires are bundled together, as in a raceway, the ampacity must be derated due to the reduced ability to dissipate heat.
For 4-6 current-carrying conductors, the NEC suggests derating to 80%, 7-9 to 70%, and more than 9 to 50%. Therefore, with 20 conductors, the ampacity would be derated to 50% of 15 A, which is 7.5 A. But in practice, we use the nearest standard size of overcurrent protection device below the ampacity after derating, which usually brings us to either 7 or 5 amperes. Options 10 A and 15 A would be too high and disregard the need for derating. Thus, the most accurate answer, based on NEC guidelines, would likely be 7 A. Still, official guidelines and local regulations should be consulted to determine the exact ampacity as it may vary based on specific conditions.
Based on the NEC guidelines, the ampacity for No. 12 aluminum wire with RHW insulation must be derated when in a raceway with multiple wires. Normally, it is 15 A, but with 20 wires, it would typically be derated to 80%, which closest matches option A, 7 A.
The ampacity of a No. 12 aluminum wire with RHW insulation installed in a raceway with other wires will be de-rated according to the National Electrical Code (NEC). The NEC provides a table for the allowable ampacities of conductors, but they must be adjusted when multiple conductors are bundled together, as they generate more heat and can handle less current.
For No. 12 aluminum wire with RHW insulation, the typical ampacity is 15 A when not in a bundle. However, the NEC states that for more than 3 wires in a conduit, the ampacity must be derated to 80% of this value. Since there are a total of 20 wires in this case, the ampacity would have to be derated further.
Unfortunately, the question does not provide the exact de-rating factor needed for a bundle of 20 wires; the NEC must be consulted directly for specific de-rating factors. Nevertheless, the closest answer from the provided options, based on the typical 80% de-rate, would be 7 A (Answer A).
Modify secondverse to play "the name game" (a.k.a. "the banana song", see wikipedia.org), by replacing "(name)" with username but without the first letter. ex: if username = "katie", the program prints:
The term _____ best describes the level of technology skills needed in today’s business world.
The file stream data type is for out put files, input files,or files that perform both input and output
When you modify or delete data present in a database, you are ________?
"because data in a computer can be easily accessed and modified, that presents a challange for the investigators of a computer crime. what method is used to make sure the files the investigator have have not been changed from their original state found in the crime computer
You live "out in the middle of nowhere" and feel there is no need to protect your internet connection because there is no one that lives near you. one day you are unable to connect to the internet. after calling tech support you find that someone has hacked into your router and has changed all the settings. fortunately the hacker only wanted to use your internet connection and did not view any information on your computer. your decision to leave your router unprotected risked the integrity of the information on your computer. select yes or no.
Users reside "inside the middle of nowhere" and think that and no need to secure their connection to the internet so nobody lives next door, and the further discussion can be defined as follows:
In this, the user can't access the internet one day, upon calling technical assistance, we discover that someone has hacks through the router and altered all of its settings. Fortunately, the hacker was only interested in your internet access and did not look at any of your computer's data. So, the choice to leave your connection unencrypted exposed yourself to hazards to authenticity on your computer's data.Therefore, the given statement is "False".
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If a protocol is routable which tcp/ip layer does it operate at\
Every node (except of the last node) in a singly linked list contains ____
Gps receivers are commonly used by individuals to determine their geographic location while hiking and to obtain driving directions while traveling.
a. True
b. False
The protocol that resides at the ____ layer in the tcp/ip protocol suite is called internet protocol (ip).
To create a multi-column and multi-row box for users to type into in an html form, use the ____________ tag pair
To create a multi-column and multi-row box for users to type into in an html form, use the <textarea></textarea> tag pair.
The html tags are the codes or the hidden keywords in the web browser to tell about its format and displayed content. The html tags mostly comes in pairs, pair consist of the start tag and end tag.What is the windows server 2012 feature that enables you to maintain previous versions of files on a server, so that if users accidentally delete or overwrite a file, they can access a copy?
A broadcast network is one in which a transmission from any one attached station is received by all other attached stations over a shared medium. examples are a bustopology local area network, such as ethernet, and a wireless radio network. discuss the need or lack of need for a network layer (osi layer 3) in a broadcast network
In addition to narrative form, experimental or avant-garde films may use ______ or ______ form.
In addition to narrative form, experimental or avant-garde films may use Abstract or Associational form.
The abstract form organizes entire films around shapes, sizes, colors and movements in the images. Abstract films can seen completely random. And associational form in which the films parts are exposed to suggest similarities, contrast, concept, emotions and express qualities.
If you were optimizing for performance and wanted to support potentially adding many new elements to an adt, then:
If you were optimizing for performance and wanted to support potentially adding many new elements to an adt, then a list would allow faster addition of elements than an array. The object that contains the data of similar type is called an array. When the array is created, its length of array is established.
Access points take ________ from wireless devices and send them on to devices on the wired lan.
The ________ is one of a number of major internet interconnection points that serve to tie all the isps together.
Excel is an electronic version of a(n) ____
Write a program that reads in two integers and determines if the first is a multiple of the second. [hint: use the modulus operator.]
"omr, ocr, and micr are all types of ________."
Answer:
recognition/reader devices
Explanation:
What is a series of instruction or commands that a computer follows; used to create software
A program is an established set of instructions that a computer tracks to perform a task. The program is put into a storage area manageable to the computer and memory can also comprise the information that the instruction operates on. The computer program changes to one instruction and accomplishes it and then gets the following instruction. Programs can be considered as interactive or batch in relations of what drives them and how constantly they run. An interactive program obtains data from an interactive user or perhaps from another program that put on an interactive user. A batch program tracks and does it work and then stops and can be in progress by interactive users who appeal their interactive program to run the batch program.
What is the ratio between total bits required for such a cache implementation over the data storage bits?
On the Picture Tools Layout tab, you can preview results of the numerous styles, borders, effects, and layouts by _______ commands.
By single-clicking commands, you can preview results of the borders, numerous style, layouts, and effects, on the Picture Tools Layout tab.
You may observe that when you select a picture as you work, a new tab will display above the Format tab – which is the Picture Tools tab. A special set of commands that are exclusive for pictures will be available on the Ribbon once this tab displays.
A lot of Microsoft Office applications contain this option, such as the popular
document editing application, Microsoft Word. Today, the most recent version of
the Microsoft Office suite is the Office 2016 for Windows and MacOS.