| A. |
Super block contains the number of i-nodes, the number of disk blocks, and the start of the list of free disk blocks.
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| B. |
An i-node contains accounting information as well as enough information to locate all the disk blocks that holds the file’s data.
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| C. | Each i-node is 256-bytes long. |
| D. | All the files and directories are stored in data blocks. |
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Option: C Explanation : Click on Discuss to view users comments. |
| A. |
INT signal is sent by the terminal driver when one types <Control-C> and it is a request to terminate the current operation.
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| B. |
TERM is a request to terminate execution completely. The receiving process will clean up its state and exit.
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| C. | QUIT is similar to TERM, except that it defaults to producing a core dump if not caught. |
| D. | KILL is a blockable signal. |
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Option: D Explanation : Click on Discuss to view users comments. |
A multicomputer with 256 CPUs is organized as 16 × 16 grid. What is the worst case delay (in hops) that a message might have to take ?
| A. | 16 |
| B. | 15 |
| C. | 32 |
| D. | 30 |
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Option: D Explanation : It passes through 2(N-1) = 2(16-1) = 30 hops Click on Discuss to view users comments. |
Suppose that the time to do a null remote procedure call (RPC) (i.e. 0 data bytes) is 1.0 msec, with an additional 1.5 msec for every 1K of data. How long does it take to read 32 K from the file server as 32 1K RPCs ?
| A. | 49 msec |
| B. | 80 msec |
| C. | 48 msec |
| D. | 100 msec |
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Option: B Explanation :
A single 32K RPC takes 1.5*32 + 1.0 = 49.0 msec
32 1K RPCs take 1.5*32 + 1.0*32 = 80.0 msec
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| A. | 2 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
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Option: D Explanation : Click on Discuss to view users comments. |
