IT 101 Homework 2 Page 1 of 4

1. (6pts) Samsung Galaxy Watch specification can be found at https://www.dell.com/en-us/shop/samsung- galaxy-watch-46mm-display-13-4-gb-wi-fi-blutooth-silver/apd/aa312310/wearable-lifestyle-technology.

a. Using the link provided, determine the minimum amount of storage needed to hold a full

display. Provide this number in MegaByte untis. Note, I am not looking for the internal storage or memory sizes that are defined by the specifications.

b. How many displays can be stored in RAM?

c. Explain the meaning of Super AMOLED display technology (additional research is needed)

2. Consider the following assembly language instruction which is located in a program you wrote:

MULTIPLY the contents of Register 6 with the CONSTANT value of 2. This instruction will store the results back into Register 6.

Assume this machine instruction is part of an assembly program that is stored on your hard disk and it is the next instruction to be invoked. Explain how this instruction is processed using the machine cycle. Include hard drive, RAM, instruction fetch and decode, and registers in the explanation.

3. (10pts) The purpose of this problem is to interpret the specification information found on a computer.

Read the steps below to provide me with the expected information.

On a Windows, Linux or Apple machine (you can use your own or any machine found in any NJIT Lab in the PC MALL), copy/paste the Systems page which provides specifications about the hardware(Processor, RAM, System Type, etc) and operating systems

a. Insert a snapshot of the screen displayed into your WORD document you will submit for this

homework.

b. Then provide a few sentences of explanation for each item in the specification. Just providing the words that the acronyms stand for is not sufficient. You will probably have to do some research, as the class notes did not cover all of these terms.

c. Do some research to find out what type of secondary built in storage your computer has. Show

a screen shot of the current disc space used. And describe the type of storage.

d. Identify one upgrade to the machine to make it more to your liking. Provide sufficient detail

so someone could price shop for you. Finally, justify the upgrade (i.e., what will it do to make the machine better).

Note, you can use other operating systems (Apple, Unix, Linux) but the specifications should include hardware information about the CPU, memory, and operating system.

IT 101 Homework 2 Page 2 of 4

4. (10pts) Consider the Linux/Unix folder structure shown below.

The current working directory is TLevel

a. Label the root directory and a parent directory.

b. What is the absolute path of Myfile.doc?

c. What is the relative path for the Myfile.doc?

d. Can I have the two files under the Mweb directory? Explain why or why not?

e. Can I have the file and directory under TLevel directory? Explain why or why not?

Notes1.txt

notes1.txt

notesClass

Classes

TLevel

Image1.jpg

index.html

web

Index.html

Classes

myfile.doc

HPage

IT101

Myfile.doc

web

Myfile.html

IT 101 Homework 2 Page 3 of 4

5. In your AFS file space, do the following:

a. Change the permissions on your home directory and the IT101 directory (see in class lab)

so that I (UCID llw2) can list and read your files. In your homework WORD document, type the command you used to make this permission change.

b. In your under the IT101 directory, make a new directory called homework2 using

mkdir. (It should automatically inherit the permissions from your home directory if you did step 5a first otherwise you will need to change permissions manually on homwork2). In your homework WORD document, type the commands you used to show the afs and UNIX permissions for homework2.

c. Create a short text file containing your name and major. Name the file IT101-HW2.txt

and place it in your homework2 directory. It is probably easiest to create the file on your usual computer and then use MobaXterm to transfer the file to AFS. Use notepad or wordpad, not Word, to create the file.

d. Use pwd to get the absolute path to directory homework2

e. Write the absolute path to directory homework2 into the WORD document you submit for this homework. I will grade this problem by trying to read your file, so double-check that the path is correct.

6. In your homework2 directory create the program described below using python, java, shell or

any other programming language you prefer.

Often times we need to calculate the overhead of information associated with data. For instance, a web page displays content in a formatted way. There are headings, paragraphs, bullets, font changes, etc. Additional bytes are embedded in the content to let the browser know how to display the information. These additional bytes are referred to as overhead. To calculate the percent overhead the formula is:

(Extra bytes / Total number of bytes found in the web page) * 100

a. Complete the following table by calculating the value of Bytes and GigaBytes. Use 109

for the GigaByte conversion and only show to 3 decimal points.

Bits Bytes GigaBytes 232000000 4906400000 742400000000

b. Write a program that displays the table you have completed.

I will grade this problem by running your program in your account and examine the source code implemented. Make sure I have rl access to the directory with your program and to all parent directories up to and including your home directory. If you use a shell script, be sure to make it executable.

c. If you use control statements and variables in your program.

d. In the Word homework document you submit to Moodle, provide me with

the absolute path to the program and

the command used to run it. Also, upload the source code to Moodle.

Give a reason for why are interested in Information Technology.

NOTE MINUS TWO POINTS will be taken if the homework filename does not contain your name