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madam [21]
3 years ago
12

A user is asked to evaluate the data center to improve availability for customers. The user noticesthat there is only one ISP co

nnection, some of the equipment is out of warranty, there are no spare parts, and no one was monitoring the UPS which was tripped twice in one month. Which three deficiencies in high availability has the user identified? (Choose three.)
A) failure to detect errors as they occur
B) failure to protect against poor maintenance
C) single points of failure
D) failure to prevent security incidents
E) failure to identify management issues
Computers and Technology
1 answer:
arlik [135]3 years ago
4 0

Answer:

failure to detect errors as they occur

single points of failure

failure to design for reliability

Explanation:

When designing a data center, it is paramount that from the onset there must be high availability and there must be no single point of failure, as this can jeopardize all efforts put together to designing a data center. The presence of only one ISP connection is a failure to design for reliability, and as no one was monitoring the UPS is a failure to detect errors as they occur.

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You are implementing a RAID storage system and have found a system with eight 100 GB drives. How much storage space will you hav
asambeis [7]

Answer:

The space available will vary between 800 GB (100%) and 400 GB (50%) of the total disks, depending on the RAID level.

The OS will handle the RAID as a single disk.

Explanation:

Each RAID level implements parity and redundancy in a different way, so the amount of disks used for this extra information will reduce the space available for actual storage.

Usual RAID levels are:

<u>RAID 0:</u> does not implement any redundancy or parity, so you will have available 100% of the total storage: 8 x 100 GB = 800 GB

<u>RAID 1:</u> Duplicates all the information in one disk to a second disk. Space is reduced in half: 400 GB

<u>RAID 5:</u> Uses the equivalent of 1 disk of parity data distributed evenly on each disk, meaning the space available is \frac{n-1}{n} of the total disks: \frac{7}{8} of 800 GB = 700 GB

Writting and reading the information on a RAID storage is handled by a raid controller, either implemented in hardware or software. The OS will "see" a single disk and will read or write information as usual.

4 0
3 years ago
Greg works for online games development company. He occasionally visits online literature sites and downloads e-books of his cho
zalisa [80]

(A) Yes, because nobody is supposed to access non-work related sites during office hours.

3 0
3 years ago
Read 2 more answers
What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30m?
swat32

<u><em>Answer:</em></u>

<u><em>The speed is  </em></u>

<u><em>= </em></u>

<u><em>30 </em></u>

<u><em>m </em></u>

<u><em>s </em></u>

<u><em>− </em></u>

<u><em>1 </em></u>

<u><em> </em></u>

<u><em>Explanation: </em></u>

<u><em>The speed of a wave is given by </em></u>

<u><em> </em></u>

<u><em>speed </em></u>

<u><em>( </em></u>

<u><em>m </em></u>

<u><em>s </em></u>

<u><em>− </em></u>

<u><em>1 </em></u>

<u><em>) </em></u>

<u><em>= </em></u>

<u><em>frequency(Hz) </em></u>

<u><em>× </em></u>

<u><em>wavelength (m) </em></u>

<u><em> </em></u>

<u><em>The frequency is  </em></u>

<u><em>f </em></u>

<u><em>= </em></u>

<u><em>100 </em></u>

<u><em>H </em></u>

<u><em>z </em></u>

<u><em> </em></u>

<u><em>The wavelength is  </em></u>

<u><em>λ </em></u>

<u><em>= </em></u>

<u><em>0.3 </em></u>

<u><em>m </em></u>

<u><em> </em></u>

<u><em>The speed is </em></u>

<u><em> </em></u>

<u><em>v </em></u>

<u><em>= </em></u>

<u><em>λ </em></u>

<u><em>f </em></u>

<u><em>= </em></u>

<u><em>0.3 </em></u>

<u><em>⋅ </em></u>

<u><em>100 </em></u>

<u><em>= </em></u>

<u><em>30 </em></u>

<u><em>m </em></u>

<u><em>s </em></u>

<u><em>− </em></u>

<u><em>1 </em></u>

<u><em> </em></u>

<u><em></em></u>

<u><em></em></u>

<u><em></em></u>

6 0
3 years ago
Assume values 10, 20, 30, and 40 are entered in the cell range A1:A4. Cell A10 contains the formula: =A1+A2+A3+A4 and displays v
r-ruslan [8.4K]

Answer:

The formula and value to this question is "=A1+A3+A4+A5 with value 100"

Explanation:

The explanation of the given question as follows:

  • In question, it is defined that four cells that are "A1, A2, A3, and A4"  contains value that are "10, 20, 30, and 40".
  • To add these values we use addition formula that is "=A1+A2+A3+A4". it will give value 100.
  • If the user inserts a new row that is "A2" and assigns a value in the cell that is "50" so, we use the above formula that adds values with these values we also use the value "100".
8 0
3 years ago
Declare a structure whose tag name is Server and that contains the following fields: manufacturer, a string, model and serialnum
NemiM [27]

Answer:

The answer to this question as follows :

Structure definition:

struct Server  //define structure server.

{

string manufacturer;

 //define string variable.

string model, serialnum;  //define string variable.

int year;

 //define integer variable.

double clockSpeed;

 //define double variable.

int cores;   //define integer variable.

int ram;

    //define integer variable.

int storage;

  //define integer variable.

};

Explanation:

Structure is a collection of heterogeneous(different type) elements. It is a user-define datatype which is available on the C/C++ programming language. To define any structure we use the struct keyword. The syntax of defining structure can be given as:

Syntax:

struct structure name

{

//define variables

//statements and code.

};

OR

struct structure name

{

//define variables

//statements and code.

}create structure variable;  

In the above structure code, we define a structure that is "Server". In this structure, we define different types of variables that is " manufacturer, model, serialnum, year, clockSpeed, cores, ram, and storage". In this structure variable manufacturer, model and serialnum datatype are a string and clockSpeed datatype is double and variable year, cores, ram, and storage data type is an integer.

3 0
3 years ago
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