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3 years ago

Brief deacription of how hard drives have evolved

Computers and Technology

1 answer:

Zepler [3.9K]3 years ago

4 0

Answer:

The first HDD was created by IBM in 1956 and was the size of a refrigerator. The total storage capacity was 5 MB and only two heads were used to read the disks. The 1970s offered a hard disk drive in much smaller shells with the ability to store roughly 60 MB.

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List four significant differences between a file-processing system and a database management system (DBMS).

melisa1 [442]

Answer is given below

Explanation:

differences between a file-processing system and a database management system is given below

file-processing system

File system is a software that manages and organizes the files in a storage medium within a computer.
It doesn’t provide backup and recovery of data if it is lost.
There is less data consistency in file system.
File systems provide less security in comparison to DBMS.
It is less complex as compared to DBMS.

database management system

DBMS is a software for managing the database
It provides backup and recovery of data even if it is lost.
DBMS has more security mechanisms as compared to file system
It has more complexity in handling as compared to file system.
There is more data consistency because of the process of normalization.

7 0

3 years ago

What percent of students in the US are considered ESL students?

mariarad [96]

Answer: 9.5%

Explanation: There were nearly 5 million English language learners in U.S. public schools in fall 2015, according to the most recent available data from the National Center for Education Statistics. This represented 9.5% of U.S. public school enrollees, an increase from 8.1% in 2000

5 0

3 years ago

Which of the following best describes the protocols used on the Internet?

ASHA 777 [7]

Answer:

C: The protocols of the Internet are open and used by all devices connected to the network

Explanation: Hope this helps.

There are billions of devices connected to the Internet, and hundreds of different kinds of devices: laptops, tablets, phones, refrigerators, handheld credit card readers, and so on. Protocols (standards) ensure that the variety of devices interact with each other smoothly. There are a lot of protocols! The Internet was designed with several layers of abstraction that sort the protocols according to what part of the process they support.

4 0

3 years ago

Find the number of ways in which a committee of 4 can be chosen from six boys and

natima [27]

Answer:

465 ways

Explanation:

Atleast 1 girl and 1 boy

Possible combinations :

1 girl ; 3 boys = 6C1 ; 6C3

2 girls ; 2 boys = 6C2 ; 6C2

3 girls ; 1 boy = 6C3 ; 6C1

(6C1 * 6C3) + (6C2 * 6C2) + (6C3 * 6C1)

Combination formula:

nCr = n! ÷ (n-r)!r!

We can also use a calculator :

6C1 = 6

6C3 = 20

6C2 = 15

Hence,

(6C1 * 6C3) + (6C2 * 6C2) + (6C3 * 6C1)

(6 * 20) + (15 * 15) + (20 * 6)

120 + 225 + 120

= 465 ways

6 0

3 years ago

What is your favorite anime?

ira [324]

Answer:

Fullmetal Alchemist: Brotherhood (160,975)

Explanation:

Fullmetal Alchemist: Brotherhood (160,975)

6 0

3 years ago