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3 years ago

What is technology? Technology advantages and disadvantages

Computers and Technology

1 answer:

Alisiya [41]3 years ago

3 0

Explanation:

Technology is a method or skill of utilizing scientific information to reach the goals that include computers, machines and also different techniques.

Advantage of using technology

Information can be quickly stored and shared very easily.

Technology is used in all companies and businesses to achieve the tasks in a short period with efficiency,

Technology has reduces the human errors that have helped to reduce the work stress.

Disadvantages of using technology

Corruption and terrorism have increased due to advancements in technology.

with the help of technology, digital and data manipulation is done.

Too much connected or dependent on technology can cause several psychological problems such as narcissism,depressions, distraction.

Using too much of technology can affect physical health such as vision problems, hearing problems, neck strain.

You might be interested in

Who knows ro blox and plays funky friday??? :] cause i do and its fun

Elan Coil [88]

Answer:

I know ro blox but I don't play funky Friday

Ohk if it's fun I would like to try btw

:DD

Wanna be frnds with me

5 0

3 years ago

It takes 2 seconds to read or write one block from/to disk and it also takes 1 second of CPU time to merge one block of records.

Alexxx [7]

Answer:

Part a: For optimal 4-way merging, initiate with one dummy run of size 0 and merge this with the 3 smallest runs. Than merge the result to the remaining 3 runs to get a merged run of length 6000 records.

Part b: The optimal 4-way merging takes about 249 seconds.

Explanation:

The complete question is missing while searching for the question online, a similar question is found which is solved as below:

Part a

For optimal 4-way merging, we need one dummy run with size 0.

Merge 4 runs with size 0, 500, 800, and 1000 to produce a run with a run length of 2300. The new run length is calculated as follows $L_{mrg}=L_0+L_1+L_2+L_3=0+500+800+1000=2300$
Merge the run as made in step 1 with the remaining 3 runs bearing length 1000, 1200, 1500. The merged run length is 6000 and is calculated as follows

$L_{merged}=L_{mrg}+L_4+L_5+L_6=2300+1000+1200+1500=6000$

The resulting run has length 6000 records.

Part b

For step 1

Input Output Time

Input Output Time is given as

$T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\, block}$

Here

L_run is 2300 for step 01
Size_block is 100 as given
Time_{I/O per block} is 2 sec

$T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\, block}\\T_{I.O}=\frac{2300}{100} \times 2 sec\\T_{I.O}=46 sec$

So the input/output time is 46 seconds for step 01.

CPU Time

CPU Time is given as

$T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\, block}$

Here

L_run is 2300 for step 01
Size_block is 100 as given
Time_{CPU per block} is 1 sec

$T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\, block}\\T_{CPU}=\frac{2300}{100} \times 1 sec\\T_{CPU}=23 sec$

So the CPU time is 23 seconds for step 01.

Total time in step 01

$T_{step-01}=T_{I.O}+T_{CPU}\\T_{step-01}=46+23\\T_{step-01}=69 sec\\$

Total time in step 01 is 69 seconds.

For step 2

Input Output Time

Input Output Time is given as

$T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\, block}$

Here

L_run is 6000 for step 02
Size_block is 100 as given
Time_{I/O per block} is 2 sec

$T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\, block}\\T_{I.O}=\frac{6000}{100} \times 2 sec\\T_{I.O}=120 sec$

So the input/output time is 120 seconds for step 02.

CPU Time

CPU Time is given as

$T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\, block}$

Here

L_run is 6000 for step 02
Size_block is 100 as given
Time_{CPU per block} is 1 sec

$T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\, block}\\T_{CPU}=\frac{6000}{100} \times 1 sec\\T_{CPU}=60 sec$

So the CPU time is 60 seconds for step 02.

Total time in step 02

$T_{step-02}=T_{I.O}+T_{CPU}\\T_{step-02}=120+60\\T_{step-02}=180 sec\\$

Total time in step 02 is 180 seconds

Merging Time (Total)

Now the total time for merging is given as

$T_{merge}=T_{step-01}+T_{step-02}\\T_{merge}=69+180\\T_{merge}=249 sec\\$

Total time in merging is 249 seconds seconds

5 0

3 years ago

The email_list function receives a dictionary, which contains domain names as keys, and a list of users as values. Fill in the b

zysi [14]

Answer:

Following are the solution to this question:

Please find the attachment of this code.

Explanation:

In this code, an email_list method is declared, that accepts a domains parameter, and in the next step, an empty list and two for loop are defined, in which the first for loop is used for a count parameter value and in the second loop is use the append method to add the given value, and use the return method to print its value, and use the print method to call the "email_list" method.

3 0

3 years ago

Please help on both of these questions will give brainliest !!

Alja [10]

I think the first one is All of the above

3 0

3 years ago

Read 2 more answers

Classify each of the following acts as a violation of confidentiality, of data integrity, source integrity, or availability, or

AlexFokin [52]

Answer:

A) Violation of Confidentiality and Source Integrity:

Passwords are very confidential information and are usually protected by both the owner and the ower of the system (which in this case is Yahoo). To obtain the passwords, the hacker had to illegally gain access to the source of the data which is on Yahoo servers. Hence a breach of confidentiality and lack of adequate integrity on the part of Yahoo.

B) Source Integrity: Anthony accidentally cuts the electricity from the server room. Why would he be able to do that? how did he gain access into the server room? This speaks to source integrity. People should not be able to access the server room except they are authorised.

C) Source Integrity and Confidentiality: NSA finds an efficient method to break AES. AES refers to the Advanced Encryption Standard. AES is a symmetric encryption technology known as a block cipher.

It is used by the United States Government for the classification of information. Their ability to break this code speaks to Violation of Source Integrity. In this case, they haven't exactly hacked any document. However, any document that was encrypted using this technology is already compromised at the source.

D) Anna registers the domain name, "JohnSmith" and refuses to let John Smith buy or use the domain name: Violation of Availability.

It is assumed here that John Smith was the original owner of the domain but it was highjacked at expiration and registered by Anna. This kind of breach is called Violation of Availability of the domain name.

E) Some malware encrypts the victim’s hard drive with a secret key and a criminal asks for a ransom to decrypt.

This move is called the Ransomeware attack. The Integrity of the source of information (which is the hard drive) is already compromised. This is a combination of Source Integrity or availability and confidentiality violation.

F) The wiretapping of a cell phone is a breach of confidentiality and data integrity.

G) when there is a vulnerability in a system or software that is unknown to those who should be interested, it is called a Zero-Day vulnerability. Where there is a Zero-Day vulnerability there could be a violation of confidentiality, data integrity, source data and or it's availability.

Cheers!

4 0

3 years ago