IBM Zos System Administrator Interview Questions and Answers

Q1. How ls command works?
Ans. 
ls command is used to list files and directories in a directory.
• ls command stands for 'list'.

• It displays the names of files and directories in the current directory by default.

• Options can be used with ls command to customize the output, such as -l for long listing format or -a to show hidden files.

• Example: 'ls -l' will display files and directories in long listing format.
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Q2. How DNS works ?
Ans. 
DNS translates domain names to IP addresses to locate resources on the internet.
• DNS servers store records mapping domain names to IP addresses

• When a user enters a domain name, their device queries a DNS server to resolve it

• DNS uses a hierarchical system with top-level domains like .com or .org
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I dont remember it exactly now

Q1. What do you know about Itil process?
Ans. 
ITIL (Information Technology Infrastructure Library) is a set of best practices for IT service management.
• ITIL is a framework that outlines best practices for IT service management.

• It focuses on aligning IT services with the needs of the business.

• ITIL processes include incident management, change management, problem management, and more.

• ITIL helps organizations improve efficiency, reduce costs, and provide better servi...read more
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Q1. Tell me about your college project
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Q1. Tech round of interview
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Q1. Technical rpund of interview
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Q1. General abou project details
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Reasoning arthemetic

Basic coding skills technical questions

Q1. What is oops concepts in Java
Ans. 
Oops concepts in Java refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the imp...read more
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Q2. What is a collections in java
Ans. 
Collections in Java refer to classes and interfaces that implement data structures like lists, sets, and maps.
• Collections provide a way to store and manipulate groups of objects in Java

• Examples include ArrayList, LinkedList, HashSet, and HashMap

• Collections framework includes interfaces like List, Set, Map, and classes like ArrayList, HashSet, and HashMap
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Q3. What is list and set in java
Ans. 
List and Set are both interfaces in Java used to store collections of elements, but with different characteristics.
• List is an ordered collection that allows duplicate elements, while Set is an unordered collection that does not allow duplicates.

• List implementations include ArrayList, LinkedList, and Vector, while Set implementations include HashSet, TreeSet, and LinkedHashSet.

• List allows access to elements by index, wh...read more
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Q4. Write. Program of palindrome program
Ans. 
A palindrome program checks if a given string reads the same forwards and backwards.
• Create a function that takes a string as input

• Remove any spaces and convert all characters to lowercase

• Compare the string with its reverse to check if it is a palindrome
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Q5. Write a program of prime numbers
Ans. 
Program to generate prime numbers
• Create a function to check if a number is prime

• Iterate through numbers and check for prime numbers

• Store prime numbers in an array
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Q6. What is inheritance and what is class and object
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class. A class is a blueprint for creating objects, while an object is an instance of a class.
• Inheritance allows a class to reuse code from another class, promoting code reusability and reducing redundancy.

• A class is a template or blueprint for creating objects, defining attributes and methods.

• An object...read more
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Coding round test in tech Mahindra

The questions asked in the test which are technical oriented(electronics). The questions are easy to understand and answer.

Q1. I had a great experience in this round of interview. Really easy going person who conducted me the technical interview.
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Q2. Tell me about your self Any two favorite subjects After that she cared questions from there
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Q1. She asked me to explain about hcl technologies and it was good experience for me.
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Q1. Active directory
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Q2. Windows servers
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Q3. Powershell scripts
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Q4. Performance troubleshooting
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