Explore topic-wise MCQs in Practo.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Practo knowledge and support exam preparation. Choose a topic below to get started.

1.

Which join refers to join records from the right table that have no matching key in the left table are include in the result set:

A. Left outer join
B. Right outer join
C. Full outer join
D. Half outer join
Answer» C. Full outer join
2.

What will be output of following program? #include unsigned long int (* avg())[3]{ static unsigned long int arr[3] = {1,2,3}; return &arr; } int main(){ unsigned long int (*ptr)[3]; ptr = avg(); printf("%d" , *(*ptr+2)); return 0; }  

A. 1
B. 2
C. 3
D. Compilation error
Answer» D. Compilation error
3.

What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?

A. NAT
B. Static
C. Dynamic
D. PAT
Answer» E.
4.

To create a file

A. allocate the space in file system
B. make an entry for new file in directory
C. both (a) and (b)
D. none of the mentioned
Answer» D. none of the mentioned
5.

The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.

A. interrupt request line
B. device driver
C. interrupt handler
D. All of these
Answer» D. All of these