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3 years ago

Public places where you can wirelessly connect to the internet are known as wifi ________.

Computers and Technology

1 answer:

AleksAgata [21]3 years ago

8 0

Answer - Hotspots

Public places where you can wirelessly connect to the internet are known as Wi-Fi hotspots. Common Wi-Fi hotspot locations (where wireless internet connection is offered) include such places as cafes, hotels, airports, and libraries. These businesses usually create hotspots for the use of their customers.

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In a batch operating system, three jobs are submitted for execution. Each job involves an I/O activity, CPU time and another I/O

Ilia_Sergeevich [38]

Answer:

a) CPU utilization for uniprogramming system = 18.2%

b) CPU utilization for multiprogramming system = 41.379%

Explanation:

IO time = total time – CPU time

For JOB 1

CPU time = 3ms ,

total time= 23ms

IO time = 23-3 = 20ms ,

For JOB 2

CPU time =5ms

total = 29ms

IO time = 29-5 = 24ms

For JOB 3

CPU time = 4ms

total = 14ms

IO time = 14-10 =10ms

1.) In uniprogramming system, operations are performed sequentially

CPU utilization=total CPU time / total real time

CPU utilization =(3+5+4) / (23+29+14)

CPU utilization =0.182 or 18.2%

2) In multiprogramming system, jobs wait for the CPU to get free while performing IO operations concurrently

steps followed by the os

1. IO for 1st job at 0ms

2. IO for 2nd job at 0ms

3. IO for 3rd job at 0ms

4. CPU time for 3rd job at 5ms

5. Next IO job for 3rd job at 9ms END at 14ms

6. CPU time for 1st job at 9ms

7. Next IO job for 1st job at 14ms END at 23ms

8. CPU time for 2nd job at 14ms

9. Next IO job for 2nd job at 15ms END at 29ms

CPU time is 3+5+4 =12ms

Total execution time = 29ms

CPU utilization = 12*100/29= 41.379%

5 0

3 years ago

14. Emelia is very concerned about safety and has conducted a study to determine how many bike helmets were replaced at each loc

damaskus [11]

Answer:

Explanation:

Known Variables A = max Daily Rentals

X = Damaged helmets %

lets find the formula to calculate Helmets per location :taking 1st row as an example.

412 = B - (B*13/100)

412 = (100B-13B)/100

412*100 = 87B

B= 412*100/87

Hence, the generic formula becomes : B= A*100/(100-X)

Applying the same formula for each row and then using ROUND function of excel to round off the digits

=ROUND(number,digits) where number is the number you would like to round off and the digits is the number of decimal digits for it to round off. Since we want natural numbers in our example, we will be using digits as 0.

Explanation:

See attached pictures also.

5 0

3 years ago

Read 2 more answers

What is used in computer appliances and special-purpose applications, such as an automobile, ATM, or media player and is used fo

zlopas [31]

Answer:

Embedded Operating System.

Explanation:

Embedded OS (also called Real Time Operating System) is designed to perform a single purpose in devices that may or may not be computers that have very little computer power and little RAM size such as washing machines, ATM, media player, automobiles, and cameras. Examples of such embedded operating system are iOS(used in Apple's mobile devices), Symbian, Palm OS and Window OS.

Since they are used in single-purpose computers, they handle and perform their tasks with so much efficiency.

Hope this helps!

6 0

3 years ago

The term eof represents

rewona [7]

Answer:

EOF stands for End Of File

Google explains it well: EOF is a condition in a computer operating system where no more data can be read from a data source. The data source is usually called a file or stream.

8 0

3 years ago

Read 2 more answers

What is a principle of DevOps?

solong [7]

Answer:

the main principles of DevOps are automation, continuous delivery, and fast reaction to feedback. You can find a more detailed explanation of DevOps pillars in the CAMS acronym: Culture represented by human communication, technical processes, and tools.

4 0

3 years ago