Posts

IP Blog Post

What is a Protocol?
A well known set of rules and standards used to communicate between machines.

What is an Internet Protocol (IP) address?
A unique set of numbers separated by periods that identifies each computer using the Internet Protocol to communicate over a network.

How is it organized hierarchically?
from most broad to most specific it is organized in country/network, region/network, subnetwork, device.

How many bits are in an IPv4 address?
Ipv4 addresses have 32 bits.

How many IPv4 addresses does that mean there are?
This means there are more than 4 billion unique addresses.

What is the difference between IPv4 and IPv6 ?
IPv4 have only 32 bits and provides only 4 billion addresses while IPv6 uses 128 bits and provides 340 undecillion unique addresses.

Why do we need IPv6?
We need IPv6 to accommodate for the increasing number of internet users as it can provide IP addresses for more people than it will ever need to, while IPv4 can only provide for about half of the worlds cur…

Data Privacy

Article 1:
      This article about the Accuweather app shows how many companies make their money off of a free app. The app begins by asking you if it could access your location even when not in the app. This is in order to comfort the user into thinking their data will not be used if they so choose. In reality Accuweather will still be selling your location data to other third party companies. They have to do this because most advertisers benefit more from their ads when they are targeting the larger audiences of the bigger weather apps.

Article 2:
      This article acknowledges the problems with data privacy resulting from ads that can track location. Advertisers can set their adds to be based on location and if they then monitor where their adds are being displayed they can effectively monitor someones location without them even knowing or accepting any conditions. The advertiser can, if they want to, monitor the path an individual takes on a day to day basis by putting dots on p…

Microchips in Humans

Positives
-access to passwords and identification is always present and easy to use with the right technology
-can be used to store medical information for people with chronic illnesses
-can be used for simple purchases like from a vending machine and other actions such as unlocking a car
Negatives
-privacy could be breached (people could be tracked
-other people could access information on microchip
-things like purchases made and frequent actions with the microchip could be tracked

I think this types of technology will almost certainly become more common but will never be truly widely accepted because while people always want the newest technology most people will not want it inside of their body as it is an idea that, quite understandably, scares people. The most widespread concern is that it could be used to track your whereabouts and actions which is a daunting thought. The negatives that come with micro-chipping humans seems to overwhelm the positives which, for the most part, i…

Everyday Algorithm

Given a pile of pens, find and discard the ones that do not write anymore
1 assemble pens in a row 2 find paper  3 while pens remaining in unchecked row 4       scribble on paper with first unchecked pen in row 5       if pen works  6             place in working pile 7       else 8             place in not working pile

Tech Blog Post: Hard Drives

Hard drives are used every day to store information on any device. All of the information saved on a device can be found in the hard drive from software to pictures and videos. There are two types of hard drives: hard disk drives and solid state drives. Hard disk drives are the most common as they are generally much cheaper. They consist of a spinning disk and a magnetic needle which basically writes magnetic messages in binary onto the disk which can then be accessed and read later. Solid state drives instead use non-magnetic semiconductor chips to save data meaning it is more reliable and also ends up slightly faster than hard disk drives.
      People use the technology of hard drives everyday with out even realizing it. when you save a picture on your phone, download apps, or install software the information is all being stored until it is either deleted or overwritten. Without hard drives devices would not be able to permanently store data as the only other way to store inf…