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.
Answer : a type of SCLC in which each phase has results that flow into the next phase is called the waterfall model. Hope that helps (:
Answer:
Nelson proposed a system where copying and linking any text excerpt, image or form was possible.
Explanation:
Ted Nelson is one of the theoretical pioneers of the world wide web who is best known for inventing the concept of hypertext and hypermedia in the 1960s. As one of the early theorists on how a networked world would work.
How I know:
I goggle it.
Answer:
a. Checksum
Explanation:
Based on the information provided within the question it can be said that the field that represents this information is called the Checksum. Like mentioned in the question this refers to a value that represents the amount of bits in a certain transmission message. This is done in order to make sure that the amount of bits that were sent match the amount that were received in order to make sure that no data was lost in transit that would cause high-level errors.
