Question
In file systems, which allocation method results in the
maximum random access performance?Solution
Contiguous Allocation stores all blocks of a file in consecutive sectors on the disk, providing maximum random access performance. Since the file blocks are physically adjacent, the file system can calculate the location of any block using simple arithmetic, enabling direct access in constant time. This method minimizes seek time and latency, making it highly efficient for files that require frequent random access, such as databases or multimedia applications. However, it suffers from fragmentation and requires predefining the file size, limiting its practical use in dynamic environments. Why Other Options Are Incorrect: 2. Linked Allocation: Uses pointers to link blocks, causing sequential access and higher overhead for random access. 3. Indexed Allocation: Employs an index block to store pointers, improving random access compared to linked allocation but still involves additional overhead to access the index. 4. Clustered Allocation: Groups blocks into clusters; improves performance slightly but not as effective as contiguous allocation for random access. 5. Multi-Level Indexed Allocation: Adds levels to the index structure, improving scalability but increasing the overhead for random access. Contiguous allocation is unparalleled in random access speed but requires careful management to handle fragmentation and space allocation issues effectively.
Select the option that is related to third letter cluster in the same way as second letter cluster is related to first letter cluster.
CAT: JHA:: PUG: ?
Select the option that is related to the fifth term in the same way as the second term is related to the first term and the fourth term is related to t...
Select the option in which the words share the same relationship as that shared by the given pair of words.
Bone : Osteoporosis
74 : 56 Â :: Â 95 : Â ?
Select the option in which the numbers are related in the same way as are the numbers of the following sets. Â
(8, 5, 43)
(6, 3, 21)
...Select the option that is related to fifth letter cluster in the same way as the second - letter cluster is related to the first letter- cluster and the...
Select the combination of letter that when sequentially placed in the blanks of the given series will complete the series.
_ O _ _ S G _ A _ S...
Select the number-pair in which the two numbers share a different relationship from that shared by the two numbers in the rest of the number-pairs.
V is the son of Y. C is the son of U. The mother of V is L who is sister of U. How is Y related to U?
If 38 @ 9 = 66 and 63 @ 43 = 122, then 29 @ 57 = '?'.