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:
Keyboard,speaker,scanner,mouse,printer and monitor
Explanation:
In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, cameras, joysticks, and microphones.
Answer:
there is no car on a bus a bus is one long vehicle
Explanation:
Well theirs less travel. Its alot easier. To work from home.
But this is what it said on a website
Most of them figure they can use conference call time to get 'real work' done, chat, read the newspaper.
Answer:
B. Longer passwords
Explanation:
If the password is longer, it requires more incorrect attempts to find it, so the system could identify a potential hacker attempt. Smaller but more complex passwords could be identified by mistype or forgotten passwords.
