MCQOPTIONS
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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 | |