145. RESTORE command is used to |
| Restore files from disks made using the BACKUP command |
| Restore files which are deleted |
| Restore files from recycle bin |
| Restore files which are deleted recently |
146. How many OSI layers are covered in the X.25 standard? |
| Two |
| Three |
| Seven |
| Six |
147. What is the minimum number of wires needed to send data over a serial communication link layer? |
| 1 |
| 2 |
| 4 |
| 6 |
148. Sequential file organization is most appropriate for which of following applications? |
| Grocery store checkout |
| bank checking account |
| payroll |
| airline reservations |
149. Which command creates a directory or subdirectory? |
| Dir |
| Mkdir |
| Md |
| Both b and c |
150. The maximum length in DOS commands is |
| 80 chars |
| 127 chars |
| 100 chars |
| 8 chars |
151. Where does a computer add and compare data? |
| Hard disk |
| Floppy disk |
| CPU chip |
| Memory chip |
152. Layer one of the OSI model is |
| physical layer |
| link layer |
| transport layer |
| network layer |
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