Karza Technologies Interview Questions and Answers

Q1. What is the concept of a session in PHP?
Ans. 
A session in PHP is a way to store information (variables) to be used across multiple pages.
• Sessions are used to store user data on the server for later use

• Sessions are identified by a unique session ID, usually stored in a cookie

• Session data is stored on the server side, making it more secure than using cookies alone
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Q2. What is the difference between variables and constants in PHP?
Ans. 
Variables can be changed during the execution of a script, while constants cannot be changed once they are defined.
• Variables can be reassigned with new values, while constants cannot be changed once defined

• Constants are defined using the define() function, while variables are assigned using the $ symbol

• Constants are case-sensitive by default, while variables are case-insensitive
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Q3. What will be the output of the code below and why?
Ans. 
The code will output 'Hello World!' because the variable $x is set to true.
• The code will check if $x is true, which it is, so it will output 'Hello World!'

• The if statement will only execute if the condition is true, in this case $x is true.
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What are the differences between echo and print in PHP?

Q1. Complete Computer Science Fundamentals like Computer networks, DBMS, Operating Systems, Linux, Data Structure and Algoritgms
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Q2. All Linux Commands
Ans. 
Linux commands are used to interact with the operating system and perform various tasks.
• ls - list directory contents

• cd - change directory

• pwd - print working directory

• mkdir - make directory

• rm - remove files or directories

• cp - copy files or directories

• mv - move files or directories

• grep - search for patterns in files

• chmod - change file permissions

• sudo - execute a command as a superuser
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Q3. OSI models, HTTPs request codes
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Q4. Difference b/w list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List can be modified after creation, tuple cannot.

• List uses square brackets [], tuple uses parentheses ().

• List is used for collections of items that may change, tuple for fixed collections.

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)
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Q1. Discussion about resume, job description and role
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UCAT exam - 40 question - 20min

Q1. Questions were based QMS & ISMS and past experience
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Q1. Discussed about past experience
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Q1. Behavior, worst personality, useless manager
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Q2. Always keeping eyes on girls one of the worst manager
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