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3 years ago

Can you guess why some of the nodes would still have statically assigned ip addresses?

1 answer:

7 0

<span>The manual assignment of an IP address to a system is called static addressing. Since the assignment of IP has been entered manually using ARP utility, the network administrators probably forgot to remove the manually configured nodes with IP addresses. </span>

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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

Howie is a business analyst who is given access to the database of a product prior to its launch. He needs to understand the dat

Kisachek [45]

Answer:

D) use SQL or graphical tools to query the database

Explanation:

To query the database using SQL or graphical tools will help Howie to retrieve bulk of records from the database according to his requirements and it will help to understand and work with the data in a better way than using the data in raw form.

SQL is a language of database used to manipulate and manage the data in the relational database and to query the database.

It is an easy and faster way to query using SQL or graphical tools because no coding is required here.

Different graphical tools are used to present the data in the database in a way that can be easily understood by a person. Different interfaces are provided to visualize the database tables or schema diagrammatically e.g in the form of graphs etc. Different views of the database can be provided to different users according to their requirement and what information they required to be presented.

6 0

3 years ago

When an object reflects all the light which falls on it it's color will be

lara31 [8.8K]

A- White. shows all wavelengths of light.

4 0

3 years ago

Read 2 more answers

Given two lists: L1=[10,12,14] and L2=[20,22,24] 2

OleMash [197]

Answer:

Explanation:

(i) L1+L2 Error:

L1=[10,12,14]

L2=[20,22,24] # {n. 2 delete}

L1+L2

ans =

30 34 38

(ii) L1*2

ans =

20 24 28

(iii) L1

L1 =

10 12 14

8 0

3 years ago

write a C program that declares an integer variable called "favorite_number". The program should then prompt the user to enter t

Arturiano [62]

Answer:

// here is code in C.

// headers

#include <stdio.h>

// main function

int main(void) {

// variable declaration

int favorite_number;

// ask user to enter favorite number

printf("enter your favorite number : ");

// read the number

scanf("%d",&favorite_number);

// print the message

printf("your favorite number is: %d",favorite_number);

return 0;

}

Explanation:

Declare a variable "favorite_number" of integer type.Ask user to enter favorite number and assign it to favorite_number.Then print the message which include the favorite number.