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3 years ago

Horizontal scaling of client/server architecture means _____.

1 answer:

4 0

Horizontal scaling of client/server architecture means that more machines or more client workstation are added in the network. The impact on the network should be small and negligible.
Vertical scaling on the other hand means that more power (processing units) are added in the network.

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Information systems security is the collection of activities that protect the information system and the data stored in it.

ivann1987 [24]

Answer:

The answer is A. True.

Explanation:

Information systems security,refers to all the methods involved with assuring information integrity as well as keeping it confidential, and available.

It can also be defined as -

The detection and provisoon of solutions to security breaches.

Access controls, which prevents unauthorized system access.

Protection of information either in transit or in a storage area.

3 0

3 years ago

Oxnard Casualty wants to ensure that their e-mail server has 99.98 percent reliability. They will use several independent server

sattari [20]

Answer:

The smallest number of servers required is 3 servers

Explanation:

Given

$Reliability = 99.98\%$

$Individual Servers = 95\%$

Required

Minimum number of servers needed

Let p represent the probability that a server is reliable and the probability that it wont be reliable be represented with q

Such that

$p = 95\%\\$

It should be noted that probabilities always add up to 1;

So,

$p + q = 1$ '

Subtract p from both sides

$p - p + q = 1 - p$

$q = 1 - p$

Substitute $p = 95\%\\$

$q = 1 - 95\%$

Convert % to fraction

$q = 1 - \frac{95}{100}$

Convert fraction to decimal

$q = 1 - 0.95$

$q = 0.05$

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To get an expression for one server

The probabilities of 1 servers having 99.98% reliability is as follows;

$p = 99.98\%$

Recall that probabilities always add up to 1;

So,

$p + q = 1$

Subtract q from both sides

$p + q - q = 1 - q$

$p = 1 - q$

So,

$p = 1 - q = 99.98\%$

$1 - q = 99.98\%$

Let the number of servers be represented with n

The above expression becomes

$1 - q^n = 99.98\%$

Convert percent to fraction

$1 - q^n = \frac{9998}{10000}$

Convert fraction to decimal

$1 - q^n = 0.9998$

Add $q^n$ to both sides

$1 - q^n + q^n= 0.9998 + q^n$

$1 = 0.9998 + q^n$

Subtract 0.9998 from both sides

$1 - 0.9998 = 0.9998 - 0.9998 + q^n$

$1 - 0.9998 = q^n$

$0.0002 = q^n$

Recall that $q = 0.05$

So, the expression becomes

$0.0002 = 0.05^n$

Take Log of both sides

$Log(0.0002) = Log(0.05^n)$

From laws of logarithm $Loga^b = bLoga$

So,

$Log(0.0002) = Log(0.05^n)$ becomes

$Log(0.0002) = nLog(0.05)$

Divide both sides by $Log0.05$

$\frac{Log(0.0002)}{Log(0.05)} = \frac{nLog(0.05)}{Log(0.05)}$

$\frac{Log(0.0002)}{Log(0.05)} = n$

$n = \frac{Log(0.0002)}{Log(0.05)}$

$n = \frac{-3.69897000434}{-1.30102999566}$

$n = 2.84310893421$

$n = 3 (Approximated)$

Hence, the smallest number of servers required is 3 servers

6 0

3 years ago

Which of the following is an example of intellectual property?

Gnesinka [82]

Answer:

B. Programming code for a video game

Explanation:

An item is considered an intellectual property if it is intangible in the sense that the actual property cannot be touched and it does not have a physical presence.

Options A, C and D do not fall in this category because they are tangible and they have physical presence.

Only option A, programming source code does not fall into this category.

Hence, B. Programming code for a video game  answers the question

8 0

3 years ago

Stephen needs to insert a field into a building block that will contain variable data. Which keyboard shortcut can he use to tog

STatiana [176]

Answer:

Alt + F9

Explanation:

The Keyboard shortcut that Stephen can use use to toggle between data and the field codes is Alt + F9. This is in regards to Microsoft Word Fields for both Windows and Mac operating systems. Although ALT + F9 will toggle between these two but for all the fields within the document. If you want to toggle between a single or various fields it would be Shift + F9.

8 0

3 years ago

How to Ctrl + shift + F4 but in a HP laptop?

ludmilkaskok [199]

Answer:

Hit the X Button Located on the top right corner or hit Control, Alt, Delete

Explanation:

Hitting the X button will make you exit the whole cite, or hitting Control, Alt, Delet, will make you go to the task bar, in which you can go to the bottom right of that screen and it should say end task

3 0

3 years ago

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