Art, ent, leis practice

2. An author writes IT text books at home using his PC. He illustrates his work with many screen
shots and images obtained from web sites, showing readers how to carry out various actions.
He sends the images as bitmapped files. He sends his work to a publisher using his broadband
internet connections.

A) Define the term bandwidth: Bandwidth is the transmission capacity of an electronic communications device. Bandwidth is the speed of data transfer.
[2 marks]

B) Describe one advantage and one disadvantage of sending the images as bitmapped files instead of vector graphic files.
-One advantage of sending the images as bitmapped files instead of vector graphic files would be that it can contain width, height, and resolution, both monochrome and color, in various color depths, and optionally with data compression, alpha channels, and color profiles in the image.
-One disadvantage of sending the images as bitmapped files instead of vector graphic files would be that vectors magnify more clean while Bitmapped images get very pixy and un-clear.
[4 marks]

C) With reference to one benefit and one problem, explain why there may be advantages and disadvantages for an author when working from home instead of in the publisher's office.
One advantage for an author when working from home instead of in the publisher's office would be that he would feel comfortable in his own home. One disadvantage for an author when working from home instead of in the publisher's office would be that he could get very distracted because there are distractions in one's house.
[4 marks]

4. Digital audio players such as iRiver and iPod, shown below, have given individuals access to huge
amounts of data storage, which is both affordable and portable. Using these digital audio players,
people are able to download MP3 files from the internet. These files are generally encoded at a bit
rate of 128 Kbit/s- which is regarded as "good enough". Digital jukebox software, such as Itunes,
then allows users to manage their files on these storage devices.

A) Define the term MP3: The Term MP3 is the file extension for MPEG Audio Layer-3, a set of standards for compressing and downloading audio files from the internet.
[2 marks]

B) Describe two tasks a user can perform with digital jukebox software.
- One task a user can perform with digital jukebox software is that the user would be able to listen to the music that they like.
- Another task a user can perform with digital jukebox software is that the user can burn the songs onto a CD and share from itunes and also organize the songs.
[4 marks]

C) Explain the implication of bit rate when downloading music.
The implication of a bite rate when downloading music is that the song won't download all the way and it will take a long time to download. Also the download blocks out the bandwidth and slows down.
[4 marks]

D) Evaluate the impact digital audio players have had on the music industry.
The impact of digital audio players on the music industry is great. The musicians use CD's to get their songs out but now that they can be downloaded the musician doesn't get as much credit. There are people who get the CD and then download the CD to their Itunes and then pass on the CD for another person. This impacts the music industry because the CD is getting passed on and not enough people are buying the CD's. There are also free downloads that people use. This has a impact on the music industry because the musician isn't getting enough money or credit.
[10 mark]