| 153. A microprogram written as string of 0's and 1's is a |
| symbolic microinstruction |
| binary microinstruction |
| symbolic microprogram |
| binary microprogram |
| 154. Which command lists the contents of current directory of a disk |
| Copy |
| Tree |
| Cd |
| Dir |
| 155. Which of the following file organization is most effieient for a file with a high degree of file activity? |
| sequential |
| ISAM |
| VSAM |
| B-Tree |
| 156. A communications device that combines transmissions from several I/O devices into one line is a |
| concentrator |
| modifier |
| multiplexer |
| full-duplex line |
| 157. Which command displays all the files having the same name but different extensions? |
| Dir filename.* |
| Dir filename.ext |
| Dir *.sys |
| Dir *.ext |
| 158. Most data communications involving telegraph lines use: |
| simplex lines |
| wideband channel |
| narrowband channel |
| dialed service |
| 159. Which of the following is not a transmission medium? |
| telephone lines |
| coaxial cables |
| modem |
| microwave systems |
No comments:
Post a Comment