| 1. | Which RAID level refers to disk mirroring? |
| a. | 0 |
| b. | 1 |
| c. | 2 |
| d. | 3 |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (b).1
|
| 2. | The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to |
| a. | the time its takes for the platter to make a full rotation |
| b. | the time it takes for the read-write head to move into position over the appropriate track |
| c. | the time it takes for the platter to rotate the correct sector under the head |
| d. | none of the above |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (a).the time its takes for the platter to make a full rotation
|
| 3. | ______ is used in operating system to separate mechanism from policy. |
| a. | Single level implementation |
| b. | Two level implementation |
| c. | Multi level implementation |
| d. | None of the above |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (b).Two level implementation
|
| 4. | I/O hardware contains |
| a. | Bus |
| b. | Controller |
| c. | I/O port and its registers |
| d. | All of the mentioned |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (d).All of the mentioned
|
| 5. | The data-in register of I/O port is |
| a. | Read by host to get input |
| b. | Read by controller to get input |
| c. | Written by host to send output |
| d. | Written by host to start a command |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (a).Read by host to get input
|
| 6. | The host sets _____ bit when a command is available for the controller to execute. |
| a. | write |
| b. | status |
| c. | command-ready |
| d. | control |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).command-ready
|
| 7. | When hardware is accessed by reading and writing to the specific memory locations, then it is called |
| a. | port-mapped I/O |
| b. | controller-mapped I/O |
| c. | bus-mapped I/O |
| d. | none of the mentioned |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (d).none of the mentioned
|
| 8. | Device drivers are implemented to interface |
| a. | character devices |
| b. | block devices |
| c. | network devices |
| d. | all of the mentioned |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (d).all of the mentioned
|
| 9. | Which hardware triggers some operation after certain programmed count? |
| a. | programmable interval timer |
| b. | interrupt timer |
| c. | programmable timer |
| d. | none of the mentioned |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (a).programmable interval timer
|
| 10. | The device-status table contains |
| a. | each I/O device type |
| b. | each I/O device address |
| c. | each I/O device state |
| d. | all of the mentioned |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (d).all of the mentioned
|
