Interview Questions

Q:

What is the proper way of setting up an Android-powered device for app development?

Answer

The following are steps to be followed prior to actual application development in an Android-powered device:


- Declare your application as “debuggable” in your Android Manifest.


- Turn on “USB Debugging” on your device.


- Set up your system to detect your device.


 

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Q:

How does IDMS insure data integrity?

Answer

IDMS uses record locks to prevent another run-unit from updating the same record.

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Q:

What is dual-boot system?

Answer

Dual boot system allows you to install and maintain two operating systems on a single PC. The purpose for this is to maintain compatibility between older and newer software. For example, there maybe programs that only work under Windows 98, therefore having a dual boot system between Windows 98 and another version like Windows XP is a good choice.

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Q:

What is the Debit Balance recovery? How we can recover if we wont have any future transactions from supplier?

Answer

The Debit balance recovery is usually made by raising a credit memo for the regular vendors. However if there are no future transactions from the supplier, we ask the vendor to send the check / make an EFT for the amount due from him.

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Subject: Accounts Payable

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Q:

Explain the use of lookup tables and Aggregate tables.

Answer

At the time of updating the data warehouse, a lookup table is used. When placed on the fact table or warehouse based upon the primary key of the target, the update is takes place only by allowing new records or updated records depending upon the condition of lookup.


The materialized views are aggregate tables. It contains summarized data. For example, to generate sales reports on weekly or monthly or yearly basis instead of daily basis of an application, the date values are aggregated into week values, week values are aggregated into month values and month values into year values. To perform this process aggregate function is used.

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Q:

Can a source file contain more than one class declaration?

Answer Yes a single source file can contain any number of Class declarations but only one of the class can be declared as public.
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Subject: Java

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Q:

Explain how to work with Permissions in PHP.

Answer

Permissions in PHP are very similar to UNIX. Each file has three types of permissions – Read, write and execute. Permissions can be changed using the change mode or CHMOD command. CHMOD is followed by 3 digit number specifying the permission type. CHMOD 777 is for Read, Write and execute.


Unnecessary permissions can be stripped off using UNMASK command.


Unmask (777);

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Subject: PHP

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Q:

What is copy constructor?

Answer


Copy constructor is a constructor function with the same name as the class and used to make deep copy of objects.

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Subject: C++

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