Disk access is way slower than
memory access. Caching is a technique to improve the disk access time. Block cache is a caching technique which
reduces disk accesses time. Here a
portion of disk is bought to cache for reading and a modified blocks are first
changed in cache but reflected in the disk at one go. On the other hand with write through caching
each modified block is written to cache and at the same time it is written to
the disk. Write- through caching
requires more disk I/O so they can have a negative effect on the performance.
B the services provided by the provider
This isn’t helpful considering no one knows what type of news letter you want
Answer:
c. The placement and relationship of elements within a picture
Explanation:
Required
What composition means?
Literally, composition means the way the elements of a picture are presented. The elements in this case constitute all lines, shapes, dots, pattern and many more.
You will notice that some of these elements will be placed over one another, some side by side, some far from one another.
So, composition means the way these elements are displayed.
<em>Hence, option (c) is correct.</em>
