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OverLord2011 [107]

3 years ago

9

You are given two processors P1 and P2 that execute the same instruction set but have different architectures. The instructions

that are executed by these processors can be divided into four classes –A, B, C and D. Processor P1 has a clock rate of 2.5 GHz and CPIs of 1, 2, 3 and 3 for each class of instruction. Processor P2 has a clock rate of 3 GHz and CPIs of:_______

Computers and Technology

1 answer:

mafiozo [28]3 years ago

3 0

The answer & explanation for this question is given in the attachment below.

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Why are free web based providers so popular?

kipiarov [429]

The first one, Accessing is so important .

6 0

3 years ago

Suppose that Alice wants to send Bob a 50 kilobyte message over a 1 Gbps link. The total time required to transmit the message (

svlad2 [7]

Answer:

170 Mbps

Explanation:

Time taken to put data on to the link T1 = 50kB / 1 Gbps = 0.0004096

Time taken for transmission T2 = 2 milliseconds = 2 * 10-3

--> throughput = ( 1 / (1+T2/T1) ) * bandwidth of link

= ( 1 / (1 + 4.8828125) ) * 1 Gbps

= 0.16998672 * 1 Gbps

= 169.98672 Mbps

= 170 Mbps.

8 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

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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

$q = 1 - 0.95$

$q = 0.05$

------------------------------------------------------------------------------------------------

<em>To get an expression for one server</em>

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 $Log0.05$

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

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

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

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

$n = 2.84310893421$

$n = 3 (Approximated)$

<em>Hence, the smallest number of servers required is 3 servers</em>

6 0

3 years ago

There are 22 gloves in a drawer: 5 pairs of red gloves, 4 pairs of yellow, and 2 pairs of green. You select the gloves in the da

AVprozaik [17]

Answer:

Best-case = 2 gloves

Worst-case = 12 gloves

Explanation:

For the best-case: Because there is a chance that you take two gloves of the same color in the first two round the answer is two.
For the worst-case: The worst case would be if, for each color-group of gloves you take the right or left glove, for example, you take 5 left-hand red gloves then 4 left-hand yellow gloves, then 2 left-hand green gloves, because you have already taken all of the left gloves the next one is going to be a right glove that is going to pair with one of the already selected gloves, therefore, the answer is 12 -> 5+4+2+1 = 12

3 0

3 years ago

____________________deals with syntax and semantics ofinformation exchange.

Goshia [24]

Answer:

The answer is (a).Presentation Layer

Explanation:

This layer is located at the 6th level of the OSI model, responsible for delivering and formatting the information to the upper layer for further processing. This service is needed because different types of computer uses different data representation. The presentation layer handles issues related to data presentation and transport, including encryption,translation and compression.

3 0

3 years ago