Interview Questions

A is incorrect because classes implement interfaces, they don't extend them. B is incorrect because interfaces only "inherit from" other interfaces. D is incorrect based on the preceding rules.

To pass the information into the script from outside, help can be taken from the PHP CLI (Command line interface) method. Suppose addition of two numbers has to be passed to PHP then it can be passed like this on the command line:

php add.php 2 3

Here the script name is add.php, and 2 and 3 are the numbers that has to be added by the script. These numbers are available inside the script in an array called $argv. This array contains all the information on the command line; the statement is stored as follows:

$argv[0]=add.php

$argv[1]=2

$argv[2]=3

So, $argv always contains at least one element — the script name.

Then, in your script, you can use the following statements:

$sum = $argv[1] + $argv[2];

echo $sum;

$argc is a variable that stores the numbers of elements in $argv. $argc is equal to at least 1, which is saved for the name of the script. Example is $argc=3 using the above statements.

No. JavaScript does not have block level scope, all the variables declared inside a function possess the same level of scope unlike c,c++,java.

There are four phases that basically gets involved in the cloud architecture:

1. Launch phase: it launches the basic services and makes the system ready for communication and for application building

2. Monitor phase: it monitors the services that is being launched and then manages them so that on demand the user will be able to get what he wants.

3. Shutdown phase: it shutdown the services that are not required first and after all the services gets shutdown, and then it closes the system services. 

4. Cleanup phase: it clean up the left out processes and services that is being either broken or didn’t get shutdown correctly.

The term derivative indicates that it has no independent value that is its value is entirely derived from the values of the underlying assets. The underlying asset can be securities, commodities , bullion, currency, livestock or anything else.

The window, Frame and Dialog classes use a border layout as their default layout.

The interviewer wants to know how you will deal in stressful situations by asking this question.

Sample answer:

I react to situations rather than being stressful. I want to make the situations not to be stress for anybody. If a situation seems overwhelming, I mentally break it up into smaller steps and just focus on reaching each one on the way to accomplishing the larger task. Once I had a situation that in the same week i had to submit two projects which is very pressure to me. As i was skilled in multiple tasks, i just break down all the works i have in to smaller assignments and just worked one by one to complete the whole task. By this way i handled my stressful situation and submitted my projects within the due time.

Ofcourse, such situations helps me to stay motivated and productive.