The 15 one-mark questions from the March 2024 12th Standard Computer Applications public exam, in paper order, with the correct option marked and a short explanation.
Q1
AIFF file format was developed by __________.
- A. Apple Inc.Correct
- B. TCS
- C. IBM
- D. MicroSoft
Explanation. AIFF (Audio Interchange File Format) is an audio file format developed by Apple Inc.
Q2
Identify the data query language command used to retrieve the data from database.
- A. Delete
- B. Insert
- C. SelectCorrect
- D. Update
Explanation. SELECT is the DQL command that retrieves data from tables; Insert, Update and Delete are DML commands that change data.
Q3
Which statement is used to show the output of a string or other data in the screen in PHP ?
- A. for
- B. switch
- C. while
- D. echoCorrect
Explanation. echo displays strings or other data on the screen; for and while are loops and switch is a conditional statement.
Q4
Which of the following is used to terminate from the switch statement ?
- A. goto
- B. breakCorrect
- C. return
- D. continue
Explanation. The break statement ends the matching case and exits the switch block.
Q5
What is the output of the following code ?
for($i=5; $i>=1; $i--)
{
echo $i ."<br>";
}
- A. 5432
- B. 12345
- C. 1234
- D. 54321Correct
Explanation. $i starts at 5 and decreases by 1 while $i >= 1, so 5, 4, 3, 2, 1 are printed (each on a new line), i.e. 54321.
Q6
Which of the following is the correct function for closing connection in PHP ?
- A. mysql_close("Connection Object");
- B. mysqli_close("Connection Object");Correct
- C. mysqli_close("Database Object");
- D. close("Connection Object");
Explanation. In PHP the MySQLi function mysqli_close() takes the connection object returned by mysqli_connect() and closes that connection.
Q7
In mobile network, land areas for network coverage was distributed as __________.
- A. Range
- B. CellsCorrect
- C. Service
- D. Transceiver
Explanation. A mobile (cellular) network divides the land area into cells, each served by at least one fixed transceiver (base station).
Q8
How many bits are used in the IPv6 addresses ?
- A. 128Correct
- B. 32
- C. 16
- D. 64
Explanation. An IPv6 address is 128 bits long, while an IPv4 address is 32 bits.
Q9
Which of the following Connector is called as Champ Connector ?
- A. RJ14
- B. RJ11
- C. RJ45
- D. RJ21Correct
Explanation. RJ21 is a 50-pin telephone connector commonly called the champ connector (Amphenol connector).
Q10
Place option is present in __________ menu.
- A. Layout
- B. FileCorrect
- C. Window
- D. Edit
Explanation. In PageMaker, File > Place is used to import text or graphics into the publication.
Q11
Expansion of SME is :
- A. Sound Messaging Enterprises
- B. Small and Medium-sized EnterprisesCorrect
- C. Short Messaging Enterprises
- D. Simple and Medium Enterprises
Explanation. SME stands for Small and Medium-sized Enterprises, businesses that use computer networks for communication and trade.
Q12
Which of the following is correctly matched ?
- A. Stored value card - Pay later
- B. Credit card - Pay before
- C. Smart card - Pay any time
- D. Debit card - Pay nowCorrect
Explanation. A debit card deducts money from the bank account immediately (pay now); a credit card is pay later and a stored value card is pay before.
Q13
Root name server are maintained by __________.
- A. WHO
- B. IANACorrect
- C. DNS
- D. ICANN
Explanation. The root name servers are maintained and coordinated by IANA (Internet Assigned Numbers Authority).
Q14
Which of the following is not a security element involved in E-Commerce ?
- A. PhishingCorrect
- B. Authenticity
- C. Privacy
- D. Confidentiality
Explanation. Authenticity, privacy and confidentiality are e-commerce security elements; phishing is a threat (a fraud to steal details), not a security element.
Q15
A user-defined function in PHP starts with the keyword __________.
- A. defined
- B. functionCorrect
- C. funct
- D. def
Explanation. A user-defined function in PHP is declared with the keyword function, e.g. function add() { ... }.
About this paper
These are the Part I one-mark multiple-choice questions from the March 2024 12th Standard Computer Applications public examination conducted by the Tamil Nadu Directorate of Government Examinations. The answers and explanations are prepared by TN Online Test for revision. Each question links to the textbook chapter it comes from, so you can go back to that chapter's notes and MCQs.
