10th Grade Informatics Sample Test

• This is a sample test for the 10th grade in Informatics.
• The time allowed is 50 minutes, not including the time for distributing the test.

Part 1: Multiple Choice

• This section contains multiple-choice questions.
• Only one answer should be selected for each question.
• Question 1: Asks about the advantages of storing information on digital devices
  • Incorrect options include: data cannot be deleted, data is absolutely secure, storage capacity depends entirely on the device size.
  • Correct option is: large amount of data can be stored.
• Question 2: Asks about a correct equality regarding units of information storage
  • Correct answer is: 1 TB = 1024 GB.
  • Incorrect options include: 1GB = 1024 KB, 1MB = 1024 B, 1B = 1024 bit.
• Question 3: Asks for an incorrect statement about computers
  • Correct answer is: A computer can perceive smells.
  • Incorrect options include: A computer can work continuously; A computer works automatically; A computer works according to a program.
• Question 4: Asks for an example of a non-smart device
  • Correct answer is: A handheld calculator used in a graduation exam.
  • Incorrect options include: A robot vacuum cleaner; A camera that detects intrusion; A self-driving car.
• Question 5: Asks about a pre-installed application on smartphones
  • Correct answer is: A web browser.
  • Incorrect options include: Surveillance Camera, Electronic Health Records, Zoom.
• Question 6: Asks about the best way to find a game application that is available on the phone
  • Correct answer is: Search in the app store or repository on that phone.
  • Incorrect options include: Searching on a smartwatch connected to the phone, Connecting the phone to a computer, Connecting the phone to a TV.
• Question 7: Asks about the correct definition of the scope of the Internet
  • Correct answer is: Global.
  • Incorrect options include: A building, A city, A country.
• Question 8: Asks where the Internet of Things (IoT) is most clearly demonstrated
  • Correct answer is: Automatic toll collection system.
  • Incorrect options include: A milk tea shop management system; A student record storage system; An exam grading system in a test.
• Question 9: Asks about an act of cyberbullying
  • Correct answer is: Posting threatening information online.
  • Other options include: Posting personal photos to social media, Sending many emails for homework exchange, Texting to ask for homework solutions.
• Question 10: Asks about the characteristics of open educational resources on the Internet
  • Correct answer is: Can be freely modified and shared,
  • Incorrect options include: Partially free, Free, Allowed for commercialization,
• Question 11: Asks which data type cannot be translated by Google Translate on a computer
  • Correct answer is: Voice
  • Incorrect options include: Text files, Scanned images, Video
• Question 12: Which action violates ethics, laws, and culture in the digital environment?
  • Correct answer is: Posting personal information of others without consent.
  • Other options include: Sending many messages via social networks to others, Sharing a school's enrollment information after its release, Sending emails sharing personal information.
• Question 13: Which case violates Intellectual Property Law regarding the use of published digital works?
  • Correct answer is: Changing the author's name to an individual or organization's name.
  • Other options include: Copying a work for archiving in a library for research purposes; Converting work to braille for the visually impaired; Citing works for teaching without distorting intention or targeting commercial purposes.
• Question 14: Which action does NOT violate copyright?
  • Correct answer is: Author uses an artist's photo with permission, artist is credited.
  • Other options include: Publisher reprints book with consent of one author but not other; Author uses photo without permission but credits the artist; Publisher publishes work of foreign author after emailing for permission but receiving no response.
• Question 15: Which operator below is used for assignment in Python?
  • Correct answer is: a = b + 5
• Question 16: Given the python code:
  • n = int(input("Nhập vào một số nguyên: ")) print(n/2)
• If the input is 5, the output is 2.5.
• Question 17: Which command is needed to get the number n until you get a positive integer?
• Correct answer is: Loop statement.
• Question 18: Which of the following statements about the purpose of using subroutines in programming is incorrect?
  • Correct answer is: Help the program run faster.
• Question 19: In Python, function components are either required or optional. Which of the following correctly states what are the required components in a function?
  • Correct answer is: Function name
• Question 20: Python code:
  • def tinh(int a): b = a**a return b print(tinh(3))
• What is the output of this program?
  • The result is 27.
• Question 21: Which command is used to initialize a list in Python?
  • Correct answer is: lst = [1,2,3,5]
• Question 22: What line in the code has incorrect indentation:
  • n = int(input("Nhập vào một số nguyên n: ")) if n > 0: print("n là số nguyên dương”) else: print("n không phải là số nguyên dương”)
• Correct answer is: The line "else:"
• Question 23: Given two lists X and Y, which option appends Y to the end of X:
  • Correct answer is: X + Y
• Question 24: Which skill is most essential for a computer graphic designer?
  • Correct answer is: Knowledge of graphic program.

Part 2: True/False

• This section contains True/False questions.

Common Section for All Students

• Question 1: A teacher asks a student to write a program to calculate the square of the length of the diagonal of a rectangle when the lengths of two sides are known:
  • The provided Python program is: A = float(input()) B = float(input()) K = A** 2 + B ** 2 print(K)
    • a. The variable B is an integer. -> False
    • b. ** is the exponentiation operator. -> True
    • c. When entering the values 1, 2, the output will be 6 -> False
    • d. To print the length of a diagonal, we use the square route function. -> True
• Question 2: Given Program: L = int(input()) R = int(input()) cnt = 0 while L <= R: if L% 2 == 0: cnt += 1 L += 1 print(cnt)
  • a. The program prints the number of odd number in the section [L,R]. -> False
  • b. When entering two numbers 3 and 7, the program will print 2. -> True
  • c. When entering two numbers 3 and 7, after the program has ended, the value of L is 7 -> False
  • d. When the first value is 3, in a program printing the value of 3, the second number would be 9 -> False

Specialized Section

Computer Science (CS)

• Question 3. Given two bit sequences A and B: A=1001 B=11
  • a. The bit sequence A represents number 1001 in the decimal system. -> False
  • b. If reduce the last bit from bit sequence A by 1, the corresponding value also drops by 1 in the decimal system.
  • c. Summation of the two bit sequences A and B results in bit sequence 1100. -> True
  • d. The result of the expression A AND B OR A is 1001 -> True
• Question 4. In a computer, information in the form of text, sound or image,... are encoded as a bit string to store and process.
  • a. Unicode is the most common encoding table used to encode text. -> True
  • b. When taking the sound signal in time (sampling), people discretize the continuous wave graphically into many short sequential samples (segments). -> True
  • c. Each base color in the RGB color system is represented by a bit sequence of a different amount of lengths. -> False
  • d. In expanded ASCII, knowing the “A” character corresponds to the decimal number 65, then “D” is the decimal 70. -> False

Information Technology Application (ICT)

• Question 5. A student uses graphics design software to draw a logo. The logo consists of a national flag with a text of something below. The student first create the star, then the rectangle national flag, and then adds text
  • a. The flag has been drawn using the rectangle option. -> True
  • b. The text belongs to 2 layers: a rectangle layer, a star layer. -> False
  • c. the flag layer is on the layer about the star, so it hides the star layer. -> False
  • d. the edges on flag can be bent towards the desired shape. -> False

• Question 6. A group of students uses graphics design software to create a new year greeting card. The card has a background that gradually changes from pink to white with string/text "Happy New Year" in red and having the same shade:

    + a. Background card and pattern are flower colors. -> True
    + b. You may only create a font/text which have shade with a pre-set program. -> False
    + c. since the program does not pre-set to be able to create patterns, we need to create a wave shaped pattern-> True
    + d. in order to create multi-colored shade, we create a balloon with a green background shade and just copy and change those ball shade. -> True