Wednesday, November 28, 2018

IP Addresses and DNS

What is a protocol?

It is a well-set know of rules and standards used to communicate between machines.

What is an internet protocol(IP) address?

Is an address of numbers that are unique to each computer and network. A computer address is it internet protocol.

How is it organized hierarchically?

 The four numbers are a country/ network. Then region/network followed by subnetwork/device. Those are divided by subnetwork and the specific device. 

How many bits are in an IPv4 address?

There are 32 bits in an IPv4 address

How many IPv4 addresses does that mean there are?

More than 4 billion unique  address

What is the difference between IPv6 and IPv4?

An IPv6 address is much longer than an IPv4 because there are bits added on to help keep up with the fast pace internet that will keep expanding.

Why do we need IPv6?

The internet is fastly growing and each new computer or network needs there own addresses for another computer to communicate with them or a network.

What is an IP packet?

An IP packet is saying that there are many packages coming behind me to one destination but they will not all take the same route so they send a message to the destination saying what is supposed to arrive.

What is the difference between an IP address and an IP Packet?

An IP packet has many packages coming to one place but an Ip address is how the device or a network is able to communicate or reach information.

What is the purpose of the Domain Name System(DNS)?

The purpose of the DNS is how the computer is able to access the .com, .org, and .net to their own IP addresses. In each DNS server one server can't keep up with every computer so they are many but they have divided it into their own domain. 


Tuesday, November 20, 2018

Koan one


Summary
In the Koan one, it was talking about how computer intercept information about the daily activities we do in our personal or school life. While coming from the perspective of a phone that the majority of the population owns one. It talks about how the apps, calls, and messages all form back into simples bits that the computer takes from one computer to another when asked to. While they are layers to how the process is done the backbone is coming back to it being bits. Also, the law mentioned in the paragraph about how what being sends should be considered more secure because of what it could be contained inside.



Question 1
While the machinery and hardware won't change much because bits are bits. The computer is going to take what the sender wants to give to the receiver and vis verrsa. While in the article it mentions that the law won't be able to catch up the communication carriage of phone and computer. The law may be able to recognize what the general consider privacy and needs to more secure. Also what happens on the computer is all from the human action the computer just transfers or storing the information it was giving.

Question 2
How this affects my daily student life is the koan one is all about that the internet and how a computer process the information from emails to calls, messages, and etc. it is all just bits to the computer. bits that need to be transferred from computer to another. In my life, I always carry out my phone and computer to school. While I am in school there is nothing in my school or personal email messages or calls that I would be ashamed about embarrassed yes but nothing I would be like omg how did they get this. I also understand to the computer it has no emotion and it seems that this email has contents and needs to be sent to this computer. In the modern world, the phone and technology are considered a communication carriage.

Wednesday, November 7, 2018

Quiz One Corrections

Evaluate:19 MOD 5?
 I keep answering 3.8 because I am just generally confused and it looks different from the others. I now remember that is looking for the remainder of the number is was asking for. So 5 goes in nineteen 3 times with four left over.

What Is missing from the code?
From the code, I understand that nothing was happening in the loop but it would still be able to print which is why I said don't change anything. When retaking the quiz the option was not avabile so I chose the initial value of X. In the code there was already an initial value for X. So that was a question I read to fast and did not relook at before trying it in. So the right answer was "a statement to change the value of X while in the loop". Which is correct because every other answer was correct. Also looking back the code would run on forever because X won't change.

What is the highest decimal value a single byte of data can hold?(255)
  1. With this question, I keep thinking that a single byte is the first eight digits compared to the first four digits that represent 1,2,4, and 8. This question is just about me remembering the basic. 

Thursday, October 25, 2018

Breakthrough tech!!

     From the article I just read about 10 Breakthrough technologies is from my explore task in the summer I wrote about the 3D printer I know about the printers are now able to melt down some metals and make a prototype through the pinter. I also knew that they metals were slowly improving to become faster to melt down but also stronger when the metals have cooled off. The 3d printer has become cheaper over time and has made it way into hobbyist and designers. The Artificial embryos have me intrigued but also concerned. It is really interesting on how they can take stem cells and are able to form an almost alive creature or the start of the process. For the Sensing city project, it just sounds weird to me. The one I found the most interesting was the genetic fortune telling. It like a report card on what could be wrong with you or predict what you could have in the future. It amazes me that already 1 million people have tried. I know the big companies of 23 and Me and also Ancestry offers their own kit of salvia sampling and figure out where you are from in the world and also what unique about your genotype.

For the ones, I found about interesting for society were artificial embryos, genetic fortune telling, sensing city, AI for everybody, and Babel fish Earbuds. While they are more from the article these are the one that jumped out to me for society because they affect in a pro or con. Either it can connect you to your lost ancestry or the human race may never have to reproduce expect to hand over stem cells. Also trying to fix the environment or trying to figure out human behavior throughout an urban area. The earbuds can break through language barriers. All of these inventions depend on human decisions. While it can connect the world together it is truly up to us to take that leap. When it comes down to the economy it takes a lot of money to start up the process. With each invention, it about playing the long gaming or perfecting your invention but also it has to sell and earn interest back either for the purpose of the invention or project. For the culture aspect, the Babel Fish Earbuds, as stated before, would break language barriers but also may disturb the culture part. While you may be able to understand the language in your native language it also part of their culture to speak it.

Friday, October 19, 2018

The internet is for everyone

The internet is for everyone was a concept from the mind of Vint Cerf as a plea to the people who write and define standards to make sure the engineering it available to everybody around the world.

  1. It would be everywhere- While the first one of being affordability I believe that it more possible to make a system of where everybody in the world has access to a computer. In my school, they have computer labs. They have also started out with each kid had an Ipad but made the switch to each student have a computer thought out their schooling years. From my personal experience with a computer in school in the elementary levels, they have a cart of Ipads that are rented out for each classroom when they wanted to be used. When I got the middle school level they school gave a MacBook Air for each student throughout the year. At the end of out the 8th-grade year, they offered are computer up to sale for us to buy for the high school. If we decided not to buy our computer they offered the 8th graders computer up to the high school's students if they needed one. When I moved to Cap Cod Ma they offered chrome books to their students at Sandwich High school. 

Wednesday, October 3, 2018

Field trip!

      At the Chatham Maronci Maritime center, the station that stuck out to me was the enigma machine and the simulator that went along with them. I also enjoyed walking around the wireless station and learning about how the technology evolved. While it was nice to hear from someone who made a career in data science. I was bored but my reason behind it was I had no questions that needed to be answered. It was a nice presentation and learned about what you go do in the field. I am not going to lie but I almost fell asleep on station one which was the movie station. The movies were interesting to watch but I know from my learning habits. I enjoy to do hand on activity. Which is why I enjoyed the Enigma machine. When building one with all the telephones I enjoyed looking inside the machines when it taking apart. For the presentation, I enjoyed that I go to see another perspective about a field that is in computer science. Back to my original thought I just knew nothing about data science to ask questions and felt a little confused about what it is. I would have enjoyed it more if someone else int he computer science field came in talked as well.

Monday, October 1, 2018

Fahrenheit

In this lab, we were set on our own and made our code to convert Celsius to Fahrenheit. the biggest problem in this lab was getting used to working in CS50 after not using it for a while. For the code, I knew what needed to be done but has trouble remembering the small details. Such as (%.1f\n), I went back into my calculator project and then remembered to add it in. Also in this lesson, we used the CHECK 50 and STYLE 50. Not going to lie I did forget my password to it took a while to make the CHECK 50 work. Once I got my password down the code ran smoothly and passed. Then the STYLE 50 gave looking good. While the CHECK 50 gave me all smiley faces.

IP Addresses and DNS

What is a protocol? It is a well-set know of rules and standards used to communicate between machines. What is an internet protocol(IP) ...