MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Database knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
HYBRID_DISK_DRIVES_ARE_HARD-DISK_SYSTEMS_THAT_COMBINE_MAGNETIC_STORAGE_WITH_A_SMALLER_AMOUNT_OF_FLASH_MEMORY,_WHICH_IS_USED_AS_A_CACHE_FOR_FREQUENTLY_ACCESSED_DATA.?$ |
| A. | Hybrid drivers |
| B. | Disk drivers |
| C. | Hybrid disk drivers |
| D. | All of the mentioned |
| Answer» C. Hybrid disk drivers | |
| 2. |
In Flash memory, the erase operation can be performed on a number of pages, called an _______ at once, and takes about 1 to 2 milliseconds? |
| A. | Delete block |
| B. | Erase block |
| C. | Flash block |
| D. | Read block |
| Answer» C. Flash block | |
| 3. |
Once the head has reached the desired track, the time spent waiting for the sector to be accessed to appear under the head is called the _______________ |
| A. | Access time |
| B. | Average seek time |
| C. | Seek time |
| D. | Rotational latency time |
| Answer» E. | |
| 4. |
_________ is around one-half of the maximum seek time. |
| A. | Access time |
| B. | Average seek time |
| C. | Seek time |
| D. | Rotational latency time |
| Answer» C. Seek time | |
| 5. |
The time for repositioning the arm is called the ________ and it increases with the distance that the arm must move. |
| A. | Access time |
| B. | Average seek time |
| C. | Seek time |
| D. | Rotational latency time |
| Answer» D. Rotational latency time | |
| 6. |
_________ is the time from when a read or write request is issued to when data transfer begins. |
| A. | Access time |
| B. | Average seek time |
| C. | Seek time |
| D. | Rotational latency time |
| Answer» B. Average seek time | |
| 7. |
The disk controller uses ________ at each sector to ensure that the data is not corrupted on data retrieval. |
| A. | Checksum |
| B. | Unit drive |
| C. | Read disk |
| D. | Readsum |
| Answer» B. Unit drive | |
| 8. |
The disk platters mounted on a spindle and the heads mounted on a disk arm are together known as ___________ |
| A. | Read-disk assemblies |
| B. | Head–disk assemblies |
| C. | Head-write assemblies |
| D. | Read-read assemblies |
| Answer» C. Head-write assemblies | |
| 9. |
A __________ is the smallest unit of information that can be read from or written to the disk. |
| A. | Track |
| B. | Spindle |
| C. | Sector |
| D. | Platter |
| Answer» D. Platter | |
| 10. |
In magnetic disk ________ stores information on a sector magnetically as reversals of the direction of magnetization of the magnetic material. |
| A. | Read–write head |
| B. | Read-assemble head |
| C. | Head–disk assemblies |
| D. | Disk arm |
| Answer» E. | |