As you consider computer hardware and software, what hardware element do you think impact software performance the most?

*Need to write the pseudocode for this given C++ code*:

public:
    slist(): head_(nullptr), size_(0) {}
    void prepend(int data)
    {
        snode* newnode = new snode(data, head_);
        head_ = newnode;
        ++size_;
    }
  
  
    bool empty() const
    {
        return size_ == 0;
    }
    size_t size() const{
        return size_;
    }
    friend std::ostream& operator <<(std::ostream& os, const slist sli){
        if(sli.empty()){
            return os << "list empty\n";
        }
        snode* p = sli.head_;
        while(p!= nullptr){
            os << *p << "\n";
            p=p->next_;
        }  
        return os;
    }
    int get_largest() const
    {
        snode*p = head_;
        int largest = p->data_;  
        while(p != nullptr){
            if (p->data_ > largest)
            {
                largest = p->data_;
            }
            p = p->next_;
        }
        return largest;
    }
  
    bool is_greater(int n){
        return is_greater_helper(head_,n);
    }
  
    bool is_greater_helper(snode* p ,int n){
        if(p->next_ == nullptr){return n > p->data_;}
        return n > p->data_ && is_greater_helper(p->next_, n);
    }
   

How is testing a software system like inspecting a house?

You were introduced to control structures - such as IF-ELSE statement, WHILE and FOR loops. Describe what they do and why are control structures important to programming?

mention some RFID anti-collision protocols ?

3. To get some idea on what is involved in digital transmission of multimedia traffic, complete the following:

3.1. In PAM encoding, the general rule is that we need to sample at twice the bandwidth. In addition, if we use n bits for each sample, we can represent 2n loudness (amplitude) levels. What transmission speed would you need if you wanted to encode and transmit, in real time and without compression, two-channel music with a bandwidth of 20 kHz and 40,000 loudness levels?

3.2. How much disk space would your require to store 30 minutes of digital music as you calculated above?

3.3. Assume that the 30 minutes of uncompressed digital music is to be transmitted over a DS-0 digital circuit at 64 Kbps. How long will it take to complete the transmission? Express you result in hours/minutes if necessary.

1. Please fill in the 20 blanks below:

1, Considering using sorted and unsorted array as priority queue to do sorting. For an input array, we insert each element to a PQ and remove them out to an output array. Please write the arrays below:

Input array: 2,7,5,3

1. Sorted PQ after 1st Insertion:
2. Sorted PQ after 2nd Insertion:
3. Sorted PQ after 3rd Insertion:
4. Sorted PQ after 4th Insertion:
5. Output array after 1st removeMin:
6. Output array after 2nd removeMin:
7. Output array after 3rd removeMin:
8. Output array after 4th removeMin:

Input array: 2,7,5,3

9. Unsorted PQ after 1st Insertion:
10. Unsorted PQ after 2nd Insertion:
11. Unsorted PQ after 3rd Insertion:
12. Unsorted PQ after 4th Insertion:
13. Output array after 1st removeMin:
14. Output array after 2nd removeMin:
15. Output array after 3rd removeMin:
16. Output array after 4th removeMin:

2, If I use upheap strategy to construct a heap(array as implementation) from above array, what is the array of the heap of each step?

17. Step 1:
18. Step 2:
19. Step 3:
20. Step 4:

How to fix this debugging in java

Problem Debugging

This problem is to assign a value to num2 based on the input value of num1. It should then print both numbers.

int num1 = 0;

int num2 = 0;

System.out.print("Enter a number - 1, 2, or 3: ");

num1 = keyboard.nextInt();

if (num1 == 1);

num2 = 2;

else if (num1 == 2);

num2 = 3;

else if (num1 == 3);

num2 = 4;

System.out.println("num1 = " + num1 // + " and num2 = " + num2);

System.out.println("\n");

Create your own function in C that accepts one input number and returns a double number. The themes for the functions should be one of the following:

Divides the number by 3 and returns the result. For example, if 6 was input then 2.0 should be returned.

provide both your C code and an example call to the C code function. Be sure to provide an overview of what your function is doing. Include header documentation in the code as well as internal code documentation.

Question 1:

The Ethernet frame format has remained unchanged since the first standard; however, the cables and the wiring scheme have changed dramatically.

A: True

B: False

Question 2:

The concept of a ___________ is allow a switch to be configured to emulate multiple, independent switches.

A. VLAN switch

B. Repeater

C. Modem

D. Bridge

Question 3:

A Virtual Local Area Network (VLAN) switch allows the switch to be reconfigured to emulate multiple, independent switches.

A. True

B. False

Question 4:

The IEEE 802.1Q standard allows

A. connections to multiple bridging devices on multiple LAN segments.

B. multiple VLAN switches to be interconnected and to operate like a giant VLAN switch.

C. a single switch to emulate multiple, independent switches.

D. switches to connect to a virtual WAN router.

Question 5:

The purpose of a Distributed Spanning Tree (DST) is to

A. include additional LAN segments on a network.

B. increase distances a message can be forwarded.

C. prevent broadcast messages from flowing in an endless loop.

D. associate a wireless host with an access point.

Consider the following database schema for a BOOKSTORE database:

• Books (bookid, title, author, year)
• Customers (customerid, name, email)
• Purchases (customerid, bookid, year)
• Reviews (customerid, bookid, rating)
• Pricing (bookid, format, price)

The Books relation stores information about books sold by the bookstore. Note that bookid is the primary key. An example tuple is as follows:

(105, 'JAVA PROGRAMMING', 'JOHN DOE', 2001)

The Customers relation stores information about the customers of the bookstore. Note that customerid is the primary key. An example tuple is as follows:

(210, 'JOHN SMITH', '[email protected]')

The Purchases relation stores information about the customer purchases of books. Note that customerid and bookid form the primary key. An example tuple is as follows:

(210, 105, 2002), indicating that 'JOHN SMITH' with customerid 210 purchased the 'JAVA PROGRAMMING' book with bookid 105 in the year 2002.

The Reviews relation stores information about the customer reviews/ratings of the books. The ratings field refers to the number of "stars" given to the book. Note that customerid and bookid form the primary key. An example tuple is as follows:

(210, 105, 3), indicating that 'JOHN SMITH' with customerid 210 gave a 3-star rating to the 'JAVA PROGRAMMING' book with bookid 105.

The Pricing relation stores information about the price of the various books sold by the bookstore. Note that the same book can be available in multiple formats at possibly different prices. The price field refers to the number of dollars. For instance a $25 purchase will have a price field of 25. Note that the bookid and format fields form the primary key for the relation. An example tuple is as follows:

(105, 'AUDIO', 25), indicating that the 'JAVA PROGRAMMING' book with bookid 105 is available in the audio format for $25.

Given the above schema, write queries for the following:

1. Find books (show their titles) written by 'EDMUND MORGAN' since year 1990.
2. Find books (show their titles, authors and prices) that are on 'CIVIL WAR' (i.e., the title field contains 'CIVIL WAR'), available in 'AUDIO' format.
3. For each year, 'JOHN CHAMBERS' purchased at least one book, find the number of books purchased. That is, the output should be a set of tuples, each indicating a year and the number of books purchased by 'JOHN CHAMBERS' in that year.
4. Find customers (show their names and email addresses) who purchased more than one book in year 2003.
5. Find the ratings information (show titles, authors and average ratings) for books on 'CIVIL WAR' (i.e., title contains 'CIVIL WAR').

Is Copper completely obsolete?

Here is a direct quote from “Why such slow Wi-Fi?” in a recent Los Angeles Times article:

“In an analysis of fixed broadband and mobile speeds in July, Speedtest ranked the United State No. 9 for broadband and No. 46 for mobile (Nos.1, respectively, Singapore and Norway. Last: Venezuela and Iraq). Part of the issue for Americans: Many of us still have home service based on copper wire, not fiber.
Craig Ganssle, chief executive of Camp3, which works on wireless infrastructures, explains this difference: Copper service is based on the speed of sound (generally about 1,125 feet per second if it’s 68 degrees and the air is dry), and fiber is based on the speed of light (about 984 million feet per second).”

With a few exceptions, most of us get our home Internet access through a cable modem and the wires that connect our modems to our ISPs are made of copper. Let’s assume you are streaming a Netflix movie. The nearest Open Connect appliance, which Netflix uses to host and deliver movies to customers (see Chapter 11, pg. 360), is 3 miles from your home. Let’s also assume you have already found the movie to watch and is ready to start. You click on the Play button, a one-bit signal is sent over the 3-mile copper wire to reach the Open Connect appliance, which then starts sending the digitized movie frames back to your home, also over the 3-mile copper wire.

Questions:
a. Given the quoted speeds above (i.e., 1,125 feet per second vs. 984 million feet per second), from the moment you click the Play button, to the moment the first frame of the movie appears on your screen, how long will it take (round-trip time) over a copper wire? Over a fiber optic cable?
Note: 1 mile = 5,280 feet
Round-trip time = (Distance / Speed) × 2

b. How does your calculated result over a copper wire compare to your own experience of streaming movies on the Internet, excluding any buffering time? Do you see any problem with what the expert in the article above was saying? Hint: this expert did not get some basic facts of physics right.

HTML WEBSITE WITH CSS LAYOUT

1. Create a studentregistration form with the following fields:
> Email Address (Email)
> Desired Username (Text box)
> Password (Password)
> Family name (Text box)
> Middle Name/Initial (Text box)
> First name (Text box)
> Gender (Radio Button - Male or Female only!)
> ID Number (Text box)
> Mobile Number (Text box)
> Landline Number (Text box)
> Permanent Home Address (Text box)
> Degree/Course (Text box)
> Year Level (Drop down - year 1 to 5)
> Campus (Radio Button - Main Campus, Banilad Campus, LM Campus, Mambaling Campus)
> Name of Father (Text box)
> Name of Mother (Text box)
> Name of Guardian (Text box)
> Hobbies (Checkbox, a user can select multiple hobbies, at least 10 hoobies listed)
> Interests (Checkbox, a user can select multiple interest, at least 10 interest listed)
> Civil Status (Dropdown - Single, Married, Separated, Widow)
> Favorite Color (Color Picker)
> Date of Birth (Month, Day, Year - three textboxes)
> Describe yourself (Text area)
> Rate your satisfaction inside UC (Range input - ranging from 1 - 10)
> Submit button (Display "Registered" in a separate page when the user click this button - this is only for display, no backend scripts required to save the data)
> Clear button (Clear all the fields when user clicks)

2. Create a login form.
> Username
> Password
> Login Button
> Reset Button

* Arrange all your fields in a table format. You can also use the fieldset element to arrange your fields.
* Make your design clean as possible.
* Make all your fonts readable.
* If you want to use/apply colors, use only 3 colors.
* Include the Registration and Login Links in the menu area.
* Maintain the layout of your page.