IT Trainer Questions

There are lots of ways to solve the issue of callback hells:

1. Modularization: break callbacks into independent functions
2. Use a control flow library, like async
3. Use generators with Promises
4. Use async/await (note that it is only available in the latest v7 release and not in the LTS version)

Using BODMAS law,

3 x 3 + 3 - 3 + 3 =

3 x 3 = 12

= 12 + 3 - 3 + 3

=  9 + 3

= 12

Hence, 3 x 3 + 3 - 3 + 3 = 12.

Given, difference of the squares of two numbers is 180.

= k² - l² - 180

Also, square of the smaller number is 8 times the larger.

= l² = 8k

Thus, k² - 8a - 180 = 0

k² – 18k + 10k - 180 = 0

→  k(k - 18) + 10(k – 18) = 0

= (k + 10)(k – 18) = 0

→  k = -10, 18

Thus, the other number is

324 - 180 = l² 

→ Numbers are 12, 18 or -12, 18.

The reciprocal of a negative number is always a negative number. So that the number and its reciprocal multiply to 1. 

All real numbers except 0 have reciprocals.

Therefore the answer for What travels around the world but stays in one spot is STAMP or any other thing that acts as a stamp does.

Ex. the letter in the envelope etc...

Since, Several things have the possibility, but the word travel evokes that it would move. 

The second would employ a comma, or semi-colon, and not a colon so it is not properly punctuated.

The third sentence would not be correct because it uses 'like', usually used for comparison. Since you are not comparing two questions, it would not be appropriate.

The fourth sentence has 'is' before the colon, which is a implies declaration and not listing. So, again, it would not be appropriate.

Hence, the first sentence, however, is punctuated correctly.

While eating a watermelon, we all go along the red and stops at green.

A project has a beginning and an end and passes through several phases of development known as life cycle phases. Every project has certain phases of development. A clear understanding of these phases allows managers and executives to maintain control of the project more efficiently.
These phases are varied depending upon the industry involved but all follow the same basic steps.

How Important is Project Life Cycle::

1. This is a tried and tested method for delivering projects on time, within budget and to the expected quality targets.

2. Aids communication and helps define roles within the project organisation as it provides a framework for the project that is visible and understood by all members of the project.

3. The project lifecycle will allow the project manager to link progress directly to each phase and recognise the completion of each phase

4. The phases within the project lifecycle provide an understanding of the evolution of the project, being able to identify areas that need greater attention at different times such as risk management in the early stages and more Project Evaluation Reviews during the Implementation stage.

5. At each stage, approval is generally required from outside the project team before proceeding to the next stage.

6. The project life cycle also allows for the gate procedure to be used.

7. At each stage, approval is generally required from outside the project team before proceeding to the next stage.