Interview Questions

Q:

Why is it expensive to use objects for exception?

A) Exception object is created only if an error actually happens B) Because of execution time
C) Memory space involved in creating an exception object D) None of the mentioned
 
Answer & Explanation Answer: A) Exception object is created only if an error actually happens

Explanation:

If an error occurs in program, then only exception object is created otherwise, It will not be created. So it’s expensive to use in the program.

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Filed Under: C++

1 4531
Q:

How JavaScript timers work? What is a drawback of JavaScript timers?

Answer

Timers allow you to execute code at a set time or repeatedly using an interval. This is accomplished with the setTimeout, setInterval, and clearInterval functions. The setTimeout(function, delay) function initiates a timer that calls a specific function after the delay; it returns an id value that can be used to access it later. The setInterval(function, delay) function is similar to the setTimeout function except that it executes repeatedly on the delay and only stops when cancelled. The clearInterval(id) function is used to stop a timer. Timers can be tricky to use since they operate within a single thread, thus events queue up waiting to execute.

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Subject: Web Technology

0 4529
Q:

What’s the difference between accessing a class method via -> and via ::?

Answer :: is allowed to access methods that can perform static operations, i.e. those, which do not require object initialization.
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Subject: PHP

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Q:

Embedded SQL is which of the following?

A) The process of making an application capable of generating specific SQL code on the fly. B) Hard-coded SQL statements in a trigger.
C) Hard-coded SQL statements in a program language such as Java. D) Hard-coded SQL statements in a procedure.
 
Answer & Explanation Answer: C) Hard-coded SQL statements in a program language such as Java.

Explanation:
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Filed Under: SQL
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

2 4521
Q:

How many types of constructor are there in C++?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:

There are three types of constructor in C++. They are Default constructor, Parameterized constructor, Copy constructor.

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Filed Under: C++

1 4521
Q:

What is SQLCA?

Answer

- SQLCA stands for SQL Communication Area


- SQLCA is a structure of variables which are updated after every SQL statement’s execution


- Exactly only one SQLCA need to be provided to an application that contains executable SQL statements


- SQLCA is not applicable to JAVA application


- More than one SQLCA need to be provided for FORTRAN application

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0 4519
Q:

What is a VSAM slot?

Answer

A relative record dataset (RRDS) consists of a specified number of areas called slots. Each slot is identified by a relative record number (RRN) which indicates its relative position in the file.

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0 4518
Q:

How much the bug is affecting the functionality of the application?

Answer

EX:


- High Priority and Low Severity:


Company logo is not properly displayed on their website.


- High Priority and High Severity:


Suppose you are doing online shopping and filled payment information, but after submitting the form, you get a message like "Order has been cancelled."


- Low Priority and High Severity:


If we have a typical scenario in which the application get crashed, but that scenario exists rarely.


- Low Priority and Low Severity:


There is a mistake like "You have registered success" instead of successfully, success is written.

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Subject: QA Testing

6 4510