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3 years ago

Explica el empleo de cuentas y contraseñas en archivos

1 answer:

8 0

Answer:Una contraseña o clave es una forma de autentificación que utiliza información secreta para ... Algunos sistemas almacenan contraseñas como archivos de texto. ... En muchos casos, particularmente con las cuentas de administradores o ... que los usuarios tiendan a olvidar cual es la contraseña actual.

Explanation:

espero te sirva jeje

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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

Explain how you would assess the operating system requirements for virtualization if the organization wanted to virtualize 25% o

insens350 [35]

Answer:

The requirement of the virtualization in the operating system:

• The virtualization of the resources from single systems input can be partitioned into a small virtual environment in multiple system data processes.

• Virtualization can collect the physical system's hardware and software data, they can transfer the virtualization process and also verify that the working system is running properly.

• Virtualization has to determine the specific components such as workload, file location, network traffic and console administration process. The requirement for moving into the virtual environment must be selected based on windows for the operating system(32-bit), windows host operating system(4-bit) and Linux operating system.

7 0

3 years ago

A typical day in programming and software development would involve

mrs_skeptik [129]

Answer:

writing code for a software program.

Explanation:

Software development life cycle (SDLC) can be defined as a strategic process or methodology that defines the key steps or stages for creating and implementing high quality software applications.

Some of the models used in the software development life cycle (SDLC) are; waterfall model, incremental model, spiral model, agile model, big bang model, and V-shaped model.

The five (5) standard stages of development in software development are;

I. Analysis.

II. Design.

III. Implementation (coding).

IV. Testing.

V. Maintenance.

A typical day in programming and software development would involve writing code for a software program.

Generally, software applications or programs require a code containing series of sequential instruction to perform specific tasks, commands and processes. These sets of code are typically written by a software developer (programmer).

3 0

3 years ago

In a computer instant messaging survey, respondents were asked to choose the most fun way to flirt, and it found that P(D)equ

MA_775_DIABLO [31]

Answer:

P(D) = 0.4

Explanation:

P(D) is the probability of randomly selecting someone.

who does not choose a direct in-person encounter as the most fun way to flirt.

1 – 0.600 = 0.4

P(D) = 0.4

hence the upper D over bar right parenthesis represent and its value is 0.4

8 0

3 years ago

Identify a syntax used to create a spinner control using an input element. a. b. c. d.

Lorico [155]

Answer:

Option A:

Explanation:

Spinner control is a graphical control element where user can adjust the value by pressing up or down arrow button. An example is given in the attached image.

In HTML, one of the key attributes we must use to create a spinner control is "step". The attribute "step" is required to specify the interval of the step value when user press the up or down arrow button.

If we set the attribute values as follows:

type = "number"
value = 2
min = 0
max = 10

The setting above will give a spinner control with a range of legal numbers between 0, 2, 4, 6, 8 and 10.

6 0

3 years ago