Answer:
Boot partition and system partition
Explanation:
System partition is the primary partition that is used as the active boot partition,it saves boot files and all files that will be used. System partition is also known as the system directory or root directory and is usually given the identifier "c"
Boot partition is the disk partition that holds the files for the operating system files Windows operating system (either XP, Vista, 7, 8, 8.1 or 10), it works with the system partition and tells the computer where to look when starting. It given the identifier of letter "D" or "E"
Answer:
The comparison is based on memory organization schemes of contiguous memory allocation and paging with respect to External fragmentation, Internal fragmentation and Ability to share code across processes.
Explanation:
Memory organization schemes of contiguous memory allocation:
Contiguous memory allocation schemes suffers from external fragmentation. The reason is that address space is distributed contiguously and the holes and gaps keep growing when the old processes die and new processes are introduced. The variable size partition suffers from external fragmentation however the fixed size partitions do not suffer from external fragmentation. Contiguous memory allocation with variable size partitions does not encounter an internal fragmentation but with fixed size partitions suffers from internal fragmentation. Contiguous memory allocation does not support sharing code across processes. This is because the virtual memory segment of a process is not fragmented into non-contiguous fine grained blocks.
Paging:
Paging does not encounter external fragmentation as pages are of the fixed or equal size. So this reduces external fragmentation. However paging suffers from internal fragmentation. This is because a process can request more space or it can request for a less space. When page is allocated to the such a process that page is no longer utilized.This results in internal fragmentation because of the wastage of space even when the page has internal space but cannot be fully utilized. Paging allows to share code across processes.
Answer:
Option A: Software-as-a-service
Explanation:
Software-as-a-service (SAAS) is one of the cloud computing business models. The software is not delivered as a product hosted in the client machine. Instead, a customer just pays a subscription fee (sometimes free for limited quota) to gain access to the software which is hosted in a remote server maintainer by software vendor.
One benefit of SAAS is that the software vendor will usually responsible for software maintenance and update. The customer has no longer require to pay extra cost to upgrade the software. So long as the subscription is still valid, a customer can always access to the newest features of software.
Some examples of SAAS which is popular include DropBox, Google App, DocuSign, Microsoft Office 365 etc.
The question involves basic polymorphism. The following is the partial flow of the program.
baseItemPtr = new BaseItem();
baseItemPtr.setLastName("Smith");
derivedItemPtr = new DerivedItem();
derivedItemPtr.setLastName("Jones");
derivedItemPtr.setFirstName("Bill");
itemList.add(baseItemPtr);
itemList.add(derivedItemPtr);
for (i = 0; i < itemList.size(); ++i) {
itemList.get(i).printItem();
}
return;
