9626_w18_qp_32
A paper of Information Technology, 9626
Questions:
11
Year:
2018
Paper:
3
Variant:
2
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2
Some text is being written for use as a title in a slideshow presentation. The text is to be zoomed in and out as the titles are displayed in different sizes on the slides. The sample letter in Fig. 1 has been created as a bitmap graphic while the sample letter in Fig. 2 has been created as a vector graphic. B B B Fig. 1 Fig. 2 Explain, in detail, why letters created as in Fig. 2 are more suitable for use in the slideshow than those created as in Fig. 1.
19. Graphics creation  →  19.5. Text
19. Graphics creation  →  19.2. Vector graphics
19. Graphics creation  →  19.1. Common graphics skills
Open
4
Fig. 3 shows a diagram of interconnected computer networks that use internet protocol (IP) and packet switching to communicate. A large file is sent from network A to network H. Nodes B to G are routers used to connect the networks. During the sending of the file from network A, network I also starts to send a much larger video file to network H. A B G C E D F H I File sent from A File from A being received at H File from I being received at H File sent from I Fig. 3 Explain, in detail with reference to the diagram, how the file from network A and the file from network I travel through the network from router to router and start to arrive at network H at the same time. Explain why router C does not always send the packets to router D.
14. Communications technology  →  14.6. Network protocols
14. Communications technology  →  14.5. Data transmission across networks
Open
5
Quintin is a programmer who writes code in HTML and JavaScript for use in online forms. The code is developed and ‘white-box’ tested before being used. Quintin is developing the code below. He has added comments to the code. The code asks a user to input two numbers and adds the numbers together. It also displays the total and whether or not it is greater than 10. Enter first number: Enter second number: function myaddfunction() { //the next line assigns the first number input to the variable y var y = document.getElementById("nm1").value; //the next line assigns the second number input to the variable z var z = document.getElementById("nm2").value; //the next line adds the two numbers and assigns the result to the variable x var x = +y + +z; //the next line checks if x is greater or not greater than 10 and reports accordingly var A = (x >10) ? x+ " is greater than 10":x+ " is not greater than 10"; //the next line prints the results onto the page document.getElementById("add").innerHTML = A ; } Click the button to calculate the total. Add the numbers Explain how Quintin could use ‘white box’ testing to ensure that the JavaScript code produces the correct result every time. Explain why it is good practice that Quintin places his JavaScript code in external files rather than embeds the code in the actual page code.
21. Programming for the web  →  21.1. Programming for the web
Open
7
The table shows part of a database used to control the level of stock items in a clothing store. Reordering is done when the number left in stock reaches or falls below the minimum level allowed by the store management. Item_Code Description_of_Item Item_Price Current_Stock_ Level Minimum_Stock_ Level_Allowed Quantity_to-be_ Reordered XYP234 Walking boots $128.50 ABG765 Jackets $99.56 SCC653 Gloves $36.99 SOX785 Socks $25.99 XYT981 Scarf $34.45 A customer purchases two pairs of walking boots, three pairs of socks and a scarf. The items each have a barcode and are scanned at the checkout when purchased. Describe, in detail, the processes that would occur when the purchases have been made to ensure that the appropriate new orders are placed to maintain the stock levels.
1. Data processing and information  →  1.5. Data processing
16. System life cycle  →  16.3. Design
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