MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Compilers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider the grammar rule. E -> E1 − E2 for arithmetic expressions. If E1 and E2 do not have any common sub expression, in order to get the shortest possible code. |
| A. | E1 should be evaluated first |
| B. | E2 should be evaluated first |
| C. | Evaluation of E1 and E2 should necessarily be interleaved |
| D. | Order of evaluation of E1 and E2 is of no consequence |
| Answer» C. Evaluation of E1 and E2 should necessarily be interleaved | |
| 2. |
Which grammar violate rules of an operator grammar? |
| A. | (i) only |
| B. | (i) and (iii) only |
| C. | (ii) and (iii) only |
| D. | (iii) and (iv) onlyView Answer |
| Answer» C. (ii) and (iii) only | |
| 3. |
Which of the following is NOT an advantage of using shared, dynamically linked libraries as compared to statically linked libraries? |
| A. | Smaller sizes of executable |
| B. | Lesser overall page fault rate in the system |
| C. | Faster program start-up |
| D. | Existing programs need not be re-linked to take advantage of newer versions of libraries |
| Answer» D. Existing programs need not be re-linked to take advantage of newer versions of libraries | |
| 4. |
If dynamic scoping is used and call by name mechanism is used, the values printed will be? |
| A. | 115, 220 |
| B. | 25, 220 |
| C. | 25, 15 |
| D. | 115, 105 |
| Answer» C. 25, 15 | |
| 5. |
If the programming language uses static scoping and call by need parameter passing mechanism, the values printed will be? |
| A. | 115, 220 |
| B. | 25, 220 |
| C. | 25, 15 |
| D. | 115, 105 |
| Answer» E. | |
| 6. |
The 3-address code sequence generated by which definition? |
| A. | X = Y + Z |
| B. | t1 = Y + Z; X t1 |
| C. | t1 = Y; t2 = t1 + Z; X = t2 |
| D. | t1 = Y; t2 = Z; t3 + t2; X = t3View Answer |
| Answer» E. | |
| 7. |
What is grammar? |
| A. | LL (1) |
| B. | SLR (1) but not LL (1) |
| C. | LALR (1) but not SLR (1) |
| D. | LR (1) but not LALR (1)View Answer |
| Answer» D. LR (1) but not LALR (1)View Answer | |
| 8. |
Dynamic linking can cause security concerns because ______________ |
| A. | Security is dynamic |
| B. | None of the mentioned |
| C. | Security is dynamic & Cryptographic procedures are not available for dynamic linking |
| D. | Cryptographic procedures are not available for dynamic linking |
| Answer» E. | |