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Technical Questions

Why Technical Knowledge?

In today's employment world, Information Technology plays major role. Technical knowledge along with Aptitude & Reasoning has become the doorway to software companies. When IT is extensively developing day to day, one should definitely acquire technical knowledge aiming to see career growth in software industry.


What in Technical Knowledge?

Programming Languages - to develop front end applications.

Database - to develop and maintain back end/ database applications.

Networking - understanding devices connected in network to communicate with each other as well as other networks.

Hardware - understanding processors, memory storage devices, Input & Output devices and more.

Operating System - to communicate between the software and Hardware in a computer.

Software Testing - the process of evaluating a system with the intend to satisfy specified requirements.


How to prepare for Technical Interviews?

One should be curious to knowledge updates; Software world is that place where you should keep updating with new market technology trends. Get some basic knowledge about all technical concepts as the logic remains same with any language and one can get the ease of working with any language in your company. Thoroughly get updates from your friends, IT magazines, Internet, News, etc. one can get knowledge from real time people through blogs.

Popular Latest Rated
Q:

What is the output of this C code?

       #include <stdio.h>
        void main()
        {
            int x = 1, z = 3;
            int y = x << 3;
            printf( "%dn", y );
        }

A) -2147483648 B) -1
C) Run time error D) 8
 
Answer & Explanation Answer: D) 8

Explanation:
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Filed Under: Programming

2 25113
Q:

main()

{

fork();

 

printf(“Hello World!”);

}

Output for the above unix program is

A) Hello World! B) Hello World!Hello World!
C) Hello World D) None
 
Answer & Explanation Answer: B) Hello World!Hello World!

Explanation:

The fork creates a child that is a duplicate of the parent process. The child begins from the fork().All the statements after the call to fork() will be executed twice.(once by the parent process and other by child). The statement before fork() is executed only by the parent process

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Filed Under: Operating Systems
Exam Prep: GRE

1 24960
Q:

Which of the following is not a valid escape code?

A) " B) \
C) ' D) =
 
Answer & Explanation Answer: D) =

Explanation:

The valid escape codes in programming languages are ', ", \, n, or t are the valid escape codes. 

 

For example, the sequence \n usually represents a newline, while the escape sequence \\ represents a backslash, \t usually represents a newtab.

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Filed Under: Programming
Job Role: Analyst , Database Administration , IT Trainer

42 24417
Q:

 A DBMS that combines a DBMS and an application generator is ________ .

A) Microsoft's SQL Server B) Microsoft's Access
C) IBM's DB2 D) Oracle Corporation's Oracle
 
Answer & Explanation Answer: B) Microsoft's Access

Explanation:
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Filed Under: Database

33 23210
Q:

 Which of the following is the original purpose of SQL?

A) To specify the syntax and semantics of SQL data definition language B) To specify the syntax and semantics of SQL manipulation language
C) To define the data structures D) All of the above.
 
Answer & Explanation Answer: D) All of the above.

Explanation:

SQL is a domain-specific language used in programming and designed for managing data held in a relational database management system, or for stream processing in a relational data stream management system.

 

Purpose of SQL are ::

* To define the data structures

* To specify the syntax and semantics of SQL manipulation language

* To specify the syntax and semantics of SQL data definition language

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Filed Under: Database
Job Role: Analyst , Database Administration , IT Trainer

19 22793
Q:

Explain Belady's Anomaly?

Answer

Also called FIFO anomaly. Usually, on increasing the number of frames allocated to a process virtual memory, the process execution is faster, because fewer page faults occur. Sometimes, the reverse happens, i.e., the execution time increases even when more frames are allocated to the process. This is Belady's Anomaly. This is true for certain page reference patterns.

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Subject: Operating Systems

37 22336
Q:

What will output when you compile and run the following code?

#include <stdio.h>
struct student
{

int roll;
int cgpa;
int sgpa[8];

};

void main()
{

struct student s = { 12,8,7,2,5,9 };
int *ptr;
ptr = (int *)&s;
clrscr();
printf( "%d", *(ptr+3) );
getch();

}

A) 8 B) 7
C) 2 D) Compiler error
 
Answer & Explanation Answer: C) 2

Explanation:
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Filed Under: Programming

1 22328
Q:

What will be output of following program ?

#include
int main()

{

int a = 10;
void *p = &a;
int *ptr = p;
printf("%u",*ptr);
return 0;

}

A) 10 B) Address
C) 2 D) Compilation error
 
Answer & Explanation Answer: A) 10

Explanation:

Void pointer can hold address of any data type without type casting. Any pointer can hold void pointer without type casting.

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Filed Under: Programming

1 22004