Logic & Programming GFACT Practice Questions (Page 8)

Questions 36–40

1. 36application · medium

   A developer is reviewing a JavaScript function that should return the sum of two numbers. The code is: function add(a, b) { return a + b; }. When called with add('2', 3), it returns '23' instead of 5. What type of error is this?

   • AA runtime error because the function crashes
   • BA logic error because the function does not convert the string to a number
   • CA syntax error because the function is not defined correctly
   • DA compile error because JavaScript is compiled
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2. 37foundation · easy

   What is the result of the XOR operation on two boolean values when both inputs are true?

   • Atrue
   • Btrue only if the inputs are different
   • Cfalse only if the inputs are the same
   • Dfalse
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4. 38application · easy

   A program has the following pseudocode: function main() { x = 10; y = double(x); print(y); } function double(n) { return n * 2; }. What is the output?

   • AError
   • BNone
   • C10
   • D20
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5. 39expert · medium

   A developer is writing a C program that reads an integer from user input. The code is: int num; scanf("%d", &num);. The program crashes when the user enters a non-numeric value. What is the most likely cause?

   • AThe variable num is not declared
   • BThe address-of operator is missing
   • Cscanf() fails to parse the input, leaving num uninitialized, leading to undefined behavior
   • DThe format string is incorrect
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6. 40application · medium

   A network administrator writes a script to check if a server is reachable. The script uses a function check_server() that returns True if the server responds. The main code is: if check_server(): print('Up') else: print('Down'). The script prints 'Down' even though the server is up. What is the most likely cause?

   • AThe if-else syntax is incorrect
   • BThe function returns False when the server is up due to a logic error in the function
   • CThe function is never called
   • DThe print statements are swapped
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