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:
The last option i.e "A class is an instance of its object" is the correct answer of this question.
Explanation:
A class is a collection of variable and method . The class is the blueprint of the object that means class is physical space entity and object is a runtime space entity.It is the the reusability feature of the programming component.
Following are the syntax to declare any class.
Class classname
<u>For Example</u>: class test1
With the help of class we can achieve the inheritance, encapsulation and abstraction etc.
All the other options except the last one are correct option. Because option(1), option(2) and option(3) follow the property of class and object . that's why last option is False.
Answer:
Check the explanation
Explanation:
when calculating the total time to send the I bits of information or The packet delivery time or latency which can be said to be the amount of time from when the first bit leaves the point of transmission until the last is received. When it comes to a physical link, it can be computed or determined as: Packet delivery time = Transmission time + Propagation delay.
Kindly check the attached image below to get the step by step explanation to the above question.
Answer:
Cover letter
Explanation:
The type of business letter Melissa and Melrose would need to write is a Cover letter.
The Cover Letter is usually not more than a page document which gives a kind of summary or hint about who individual is and the quality of the individual, while highlighting why an individual is the best fit for the role they are seeking for.
Most recruiters usually make use of the cover letter, as a first hurdle, to screen out applicants especially when applications are much.
Melissa and Melrose, in addition to the resume they would submit for the volunteering job, would need a cover letter.
Answer:
The answer is "Option a".
Explanation:
Privacy is a set of rules, which limiting access to the data, and integrity ensures impartiality, accuracy, and reliability is assured to ensure, which authorized persons can have secure access to the data.
The system needs no access for everyone to achieve its secrecy and integrity contained in a completely safe data system, that's why the given statement is "true".
