Semiconductor memory is used mainly for primary storage even with its high cost. In another hand, the magnetic tape is the cheapest storage media and it is commonly preferred only as backup storage! Use your own words to discuss how the storage cost, speed and capacity trade-offs can affect the choice of storage media

Answers

Answer 1
In general you want to use the cheapest storage medium who's speed is compatible with the function it needs to perform. For active storage that's handled while running programs, you need memory whose speed is closely matched to the processor speed. And that would be the rather expensive semiconductor memory which is close to ideal for the task. But semiconductor memory has the disadvantage of being expensive and it loses the values stored when power is lost. So slower, persistent storage is used such as SSD (Solid State Drives) and hard disks. That media is cheaper, but slower, but still fast enough to handle tasks such as loading programs and data into memory for execution, or storing data generated by programs to persistent storage. But as with all man made things, disasters happen. Computers break down, hard disks crash, floods and fires happen, etc., and as a result data is lost. So we make backups. Backups have to have a lot of storage and they have to be cheap. But they don't need rapid access, you can start at the beginning and read (or write) all the way to the end. And for that purpose, magnetic tape is ideal. Magnetic tape is actually quite fast when you're simply streaming a continuous stream of data without any need to randomly access any piece of that data. And it's cheap, so you're willing to make a back up copy of your system and store that backup off site so a single disaster won't destroy both the primary system and the backup.

Related Questions

All programs and data located in ram are divided into fixed-length ____ or variable-length segments, depending on the operating system being used.

Answers

The correct answer would be Pages.

Which of the following is the best subject line for an e-mail sent to co-workers about rescheduling a team meeting?

Answers

reschedule the team meeting 

A file concordance tracks the unique words in a file and their frequencies. write a program that displays a concordance for a file. the program should output the unique words and their frequencies in alphabetical order.

Answers

f = "HELLO HELLO HELLO WHAT ARE YOU DOING"
myDict = {}
linenum = 0

for word in f.split():
if not word in myDict:
myDict[word] = []

myDict[word].append(linenum)


print "%-15s %-15s" %("Word", "Frequency")
for key in sorted(myDict):
print '%-15s: %-15d' % (key, len(myDict[key]))

Linux uses the freeware ____ shell as its default command interpreter.

Answers

Linux uses the freeware bash shell as its default command interpreter.

Which command provides the source reference at the bottom of the current page of a document?
A.Citation

B.Endnote

C.Footnote

D.Reference

Answers

A footnote is often the text or not seen at the bottom of a page, whereas an end note is a note found at the end of a paragraph. The content at the bottom of a page is never referred to as a “end note,” even though some people call the notes at the end of a text “footnotes.” Later, you can come back to this article. Thus option A correct.

What command provides source reference at the bottom?

The word “footnote” can also refer to a remark or a reference to a source of information that appears at the bottom (or foot) of a page. A reference is made using the footnote referencing system by: Adding a tiny number above the line of text that immediately follows the source.

Therefore, Select Insert Footnote under References. Both a reference mark and a footnote mark are added by Word at the bottom of the page. The text for the footnote.

Learn more about command here:

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Which of the following identifiers are valid? Which are Java keywords?
miles, Test, a++, 4#R, $4, #44, apps
class, int, x

Answers

valid
$4 , apps , miles , x

keywrd:
class , int 

Pointswhat is the primary reason ipv6 has not completely replaced ipv4?

Answers

Stopgap technologies such as Network Address Translation (NAT) and Classless Inter-Domain Routing (CIDR) alleviate the lack of registered IPv4 addresses and Administrators are hesitant and reluctant to change.

Answer:

Honsetly I don't know and I just realized this question is from 2017,

Explanation:

Semiconductor memory is used mainly for primary storage even with its high cost. In another hand, the magnetic tape is the cheapest storage media and it is commonly preferred only as backup storage! Use your own words to discuss how the storage cost, speed and capacity trade-offs can affect the choice of storage media.

Answers

Storage costs are a big factor in choosing the type of storage media, especially for larger projects and firms. Tasks that require large backups tend to move to magnetic (tape) memory because of the relatively low cost and high overall storage capacity. However, when working with projects that require faster memory and access that is instantaneous, chip memory, even at the higher cost, is more preferable since it is always accessible.

Most types of semiconductor memory have the property of random access,which means that it takes the same amount of time to access any memory location. This means that data can efficiently be accessed in any random order.This contrasts with data storage media such as hard disks and CDs which read and write data consecutively therefore, explains why the data can only be accessed in the same sequence it was written.

Semiconductor memory also has much faster access times than other types of data storage; a byte of data can be written to or read from semiconductor memory within a few nanoseconds, while access time for rotating storage such as hard disks is in the range of milliseconds. For these reasons it is used for main computer memory (primary storage), to hold data the computer is currently working on, among other uses.

Storage costs are a big factor in choosing the type of storage media, especially for larger projects and firms. Tasks that require large backups tend to move to magnetic (tape) memory because of the relatively low cost and high overall storage capacity. However, when working with projects that require faster memory and access that is instantaneous, chip memory, even at a higher cost, is more preferable since it is always accessible.



Alice wants to have a portrait painted of her family. What career pathway would be best for Alice to contact?

Answers

Final answer:

Alice should contact a professional portrait painter to create a family portrait that historically signifies status and personal identity. The artist should be skilled in capturing likenesses and incorporating significant symbolism, as seen in the historical context of portrait painting.

Explanation:

Alice, who is interested in having a portrait painted of her family, should contact an artist who specializes in portrait painting. Historically, portrait painting has been a significant art form, with artists receiving specialized training to capture the likenesses and convey the status and wealth of their subjects. As seen in the work of Charles Willson Peale, who studied in England and painted the Cadwaladers, and the modern innovations of Alice Bailly with her intense colors and 'wool paintings,' the career pathway for Alice to pursue would be to engage a professional portrait painter.

Portraits could include familial possessions and use symbolism, as demonstrated by Frida Kahlo's increasingly symbolic and experimental self-portraits. The artist's education, expertise in capturing likeness, and ability to incorporate symbolic elements important to the family are critical in creating a portrait that accurately represents the family's image and status. From the classical training of painters in the new colonies to contemporary portrait artists, finding a skilled painter would be the best pathway for Alice to achieve a cherished family portrait.

Final answer:

Alice should look for a professional portrait artist skilled in painting family portraits. She can find a suitable artist by exploring local galleries, seeking art school recommendations, or contacting art institutions. The artist will create a work that captures her family's likeness and essence, reflecting a long history of portrait artistry.

Explanation:

If Alice wants to have a portrait painted of her family, the best career pathway to contact would be a professional portrait artist or portrait painter. Painting portraits has a rich history as a prestigious art form. In the past, portraits were a symbol of economic or religious status, often including items of personal significance to the subject to reinforce their status within the community. Over time, the training and education for artists have become more structured, elevating the craft to new artistic heights.

Artists like Charles Willson Peale, known for his commissioned family portraits, represented subjects with symbolic items and attire to indicate their wealth and virtues. Frida Kahlo's work, known for becoming more symbolic and experimental, is another excellent example of the depth and evolution of portrait painting. Alice Bailly’s approach with Fauvist influences and inventive techniques like 'wool paintings' further showcases the versatility and creativity found within this art form. A modern portrait artist merges these historical influences with contemporary styles, offering a personalized depiction that captures the essence of her family.

In the linux bash shell, the ____ key combination moves the cursor to the beginning of the command line

Answers

CTRL+W




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