ICAS Digital Technologies 2 — Questions and Answers
Question 1: Which file format is best suited for storing a large database of student records that needs to be opened by many different programs?
- MP3
- CSV (Correct answer)
- BMP
- EXE
Correct answer: CSV
CSV (Comma-Separated Values) is a plain-text format readable by almost any spreadsheet or database program.
Question 2: A student wants to protect her Wi-Fi network from unauthorized users. Which action is MOST effective?
- Turn off the router at night
- Use WPA2 encryption with a strong password (Correct answer)
- Change the router's color indicator
- Increase the screen brightness
Correct answer: Use WPA2 encryption with a strong password
WPA2 encryption combined with a strong password is the industry-standard method for securing a wireless network.
Question 3: In programming, what does an 'infinite loop' cause?
- The program finishes instantly
- The program repeats forever without stopping (Correct answer)
- The program skips one iteration
- The program prints nothing
Correct answer: The program repeats forever without stopping
An infinite loop has a condition that never becomes false, so the loop body executes repeatedly without end.
Question 4: Which of the following is an example of OUTPUT from a computer?
- Pressing a key on a keyboard
- Moving a mouse
- Sound played through speakers (Correct answer)
- Scanning a barcode
Correct answer: Sound played through speakers
Speakers produce sound that comes out of the computer, making them an output device.
Question 5: What is the purpose of a firewall in a computer network?
- To speed up internet downloads
- To block unauthorized access while permitting authorized traffic (Correct answer)
- To store backup copies of files
- To compress video files
Correct answer: To block unauthorized access while permitting authorized traffic
A firewall monitors incoming and outgoing network traffic and blocks connections that do not meet defined security rules.
Question 6: A webpage link that no longer works is commonly called a:
- Live link
- Broken or dead link (Correct answer)
- Hypertext
- Cookie
Correct answer: Broken or dead link
A broken (dead) link is a hyperlink that points to a resource that no longer exists or has moved.
Question 7: Which data type would BEST store the value 3.14159?
- Boolean
- Integer
- Float (decimal) (Correct answer)
- Character
Correct answer: Float (decimal)
A float (floating-point) data type stores numbers with decimal points, making it appropriate for values like 3.14159.
ICAS Digital Technologies 2
Which file format is best suited for storing a large database of student records that needs to be opened by many different programs?