Computers and Technology, 27.10.2020 18:10 imhacking2048

2.3) BEST ANSWER BRAINLIEST your answer will be reported if it is ridiculous

QUESTION:

What is a layer, in the context of this lesson?

a logical unit of a system

a device for remembering something

a computer’s most basic program

the Ethernet word for a packet

LESSON:

Layers

Which of these statements do you think best describes the Internet? It serves as:

a gateway to the whole world's information technology;

a system for getting different machines on a worldwide network to interact;

a means of getting a task done;

a tool for reliably forwarding messages from one computer to another;

a way of organizing information-processing devices so that the one that is needed can be found;

a set of devices that send and receive data frames around the world; or

an arrangement of fiber optic cables, satellite links, and satellite transmissions that join many of the world's computers.

The good news is that whichever answer you selected, you were right. You were wrong only if you said any one answer was right and the others were wrong. The Internet is all of these things.

This list of correct answers does not apply only to the Internet. With a little tweaking, we can make it true for any network. For example, a LAN in a hospital is a gateway to the hospital information technology, and so on, right down to: the LAN is an arrangement of cables connecting many of the hospital's computers.

For technicians, this long list of correct answers poses a problem. When somebody asks for a technician to “fix” a network, just what are they asking for? Which one of these definitions of a network do they mean? It is your job as a network technician to discover where the best answer lies in any particular case. It sounds like a rough demand. Fortunately, the answers can be organized into layers, each of which focuses on a different networking task.

The OSI Reference Model

Imagine a pyramid, one built by the old Mayan civilization of Central America, with several distinct layers or levels. Each layer is supported by the one below it and supports the layer above it. Information technology layers work the same way. Each layer supports the task of the layer above it and depends on the layers below it. You can see how this works by reading that list of Internet descriptions in reverse order.

You will see that the cables support the switches. The switches and other devices are organized according to a system of addresses. The addresses result in the reliable arrival of messages at a receiving machine. The arrival of the message enables Internet users to perform a task. In performing a task, computers interact. All of these things combined give us a gateway to the world's information technology.

Breaking a complex task into layers gives people a logical way of understanding the whole by thinking about its parts. It also provides a way of diagnosing a problem by asking questions and ruling out layers. Your computer cannot connect to the Internet? Well, is the Internet cable plugged in to the machine? No! Then you have found the trouble. If it is plugged in, check the switches and other devices. For example, is the modem working? By climbing up the layers of the pyramid, technicians can efficiently troubleshoot a problem.

Answers: 1

Show answers

Other questions on the subject: Computers and Technology

Computers and Technology, 23.06.2019 01:40, hanjonez

Writing a modular program in visual c++. i am new to this and not sure what i am missing. i am getting the following error: baddate. cpp: in function ‘int main()’: baddate. cpp: 50: 3: error: ‘else’ without a previous ‘if’elsehere are the instructions and code: writing a modular program in c++in this lab, you add the input and output statements to a partially completed c++ program. when completed, the user should be able to enter a year, a month, and a day. the program then determines if the date is valid. valid years are those that are greater than 0, valid months include the values 1 through 12, and valid days include the values 1 through 31.notice that variables have been declared for you. write the simulated housekeeping() function that contains the prompts and input statements to retrieve a year, a month, and a day from the user. include the output statements in the simulated endofjob() function. the format of the output is as follows: month/day/year is a valid date. ormonth/day/year is an invalid date. execute the program entering the following date: month = 5, day = 32, year = 2014. record the output of this program. execute the program entering the following date: month = 9, day = 21, year = 2002. record the output of this /* program name: baddate. cppfunction: this program determines if a date entered by the user is valid. input: interactiveoutput: valid date is printed or user is alerted that an invalid date was entered*/#include bool validatedate(int, int, int); using namespace std; int main(){// declare variablesint year; int month; int day; const int min_year = 0, min_month = 1, max_month = 12, min_day = 1, max_day = 31; bool validdate = true; // this is the work of the housekeeping() method// get the year, then the month, then the daycout< < "enter the year"< > year; cout< < "enter the month"< > month; cout< < "enter the day"< > day; // this is the work of the detailloop() method// check to be sure date is validif(year < = min_year) // invalid yearvaliddate = false; else if (month < min_month || month > max_month) // invalid monthvaliddate = false; else if (day < min_day || day > max_day) // invalid dayvaliddate = false; // this is the work of the endofjob() method// test to see if date is valid and output date and whether it is valid or notif(validdate == true); {// output statementcout<

Answers: 1

continue

Computers and Technology, 23.06.2019 12:40, melaniem50

Curriculum exam to process a resident's payment, you must click on onesite payments home page. from the a. reports b. my settings o c. transactions o d. rent tab

Answers: 1

continue

Computers and Technology, 24.06.2019 02:30, cardsqueen

Which option completes the explanation for conflict of interest in an organization

Answers: 1

continue

Computers and Technology, 24.06.2019 08:30, ladybuggirl400

@josethesolis i need can anyone text me and follow me

Answers: 1

continue

You know the right answer?

2.3) BEST ANSWER BRAINLIEST your answer will be reported if it is ridiculous

QUESTION: