100+ Application Support Engineer Interview Questions and Answers

The command used to find files by name is 'find'.

• Use the 'find' command followed by the directory path and the name of the file you are searching for

• For example, 'find /path/to/directory -name filename.txt'

• You can also use wildcards like '*' to search for files with a specific pattern

To recycle JVM in Linux, use the kill command with the process ID of the JVM.

• Find the process ID of the JVM using the 'ps' command

• Use the 'kill' command with the process ID to stop the JVM

• Start the JVM again using the appropriate command

A database is a collection of data that is organized in a way that allows for easy retrieval and manipulation. Keys in a database are unique identifiers for each record.

• A database is used to store and manage data.

• It can be relational or non-relational.

• Keys are used to uniquely identify each record in the database.

• Primary keys are used to identify the main record in a table.

• Foreign keys are used to link tables together.

• Examples of databases include MySQL, Oracle, and MongoDB.

A database is a structured collection of data that is organized and managed to provide efficient retrieval and storage.

• A database is a software system that stores and manages data.

• It provides a way to organize and structure data for easy retrieval and manipulation.

• There are different types of databases, such as relational databases, NoSQL databases, and object-oriented databases.

• Relational databases use tables to store data and have predefined relationships between tables.

• NoS...read more

Users commonly complain about slow performance, errors during updates, and difficulty in customization on Sage.

• Slow performance when running reports or processing large amounts of data

• Errors encountered during software updates or installations

• Difficulty in customizing the software to meet specific business needs

• Issues with integration with other software applications

• Lack of user-friendly interface leading to confusion and inefficiency

The uptime command in Linux displays the current time, how long the system has been running, and the number of users currently logged in.

• Displays the current time

• Shows how long the system has been running

• Indicates the number of users currently logged in

I prioritize tasks based on urgency and importance, communicate with stakeholders for realistic deadlines, and delegate when necessary.

• Prioritize tasks based on urgency and importance

• Communicate with stakeholders for realistic deadlines

• Delegate tasks when necessary

I prioritize p1 issues based on impact and urgency, communicate with stakeholders, troubleshoot to identify root cause, and work towards resolution.

• Prioritize p1 issues based on impact and urgency

• Communicate with stakeholders to keep them informed

• Troubleshoot to identify root cause

• Work towards resolution by collaborating with team members

I monitor metrics using a combination of monitoring tools, alerts, dashboards, and regular reviews.

• Utilize monitoring tools such as Nagios, Zabbix, or Prometheus to track key metrics

• Set up alerts for critical thresholds to be notified of any issues immediately

• Create dashboards in tools like Grafana to visualize and analyze metrics trends

• Regularly review and analyze metrics to identify areas for improvement or optimization

To list crontabs running, use the crontab command with the -l option.

• Use the command 'crontab -l' to list crontabs running for the current user.

• To list crontabs running for a specific user, use 'crontab -u username -l'.

• To view system-wide crontabs, check the /etc/crontab file and the /etc/cron.d/ directory.

To handle support for Opera cloud ITIL, follow ITIL best practices and prioritize incidents based on impact and urgency.

• Follow ITIL best practices for incident management

• Prioritize incidents based on impact and urgency

• Ensure timely resolution and communication with stakeholders

• Maintain documentation and knowledge base for future reference

• Continuously improve support processes through feedback and analysis

PK is Primary Key which uniquely identifies a record in a table, while FK is Foreign Key which establishes a relationship between two tables.

• PK ensures uniqueness of records in a table

• FK establishes a relationship between tables

• PK is used to enforce entity integrity, while FK is used to enforce referential integrity

SQL is a programming language used for managing and manipulating relational databases.

• SQL stands for Structured Query Language

• It is used to communicate with databases to retrieve, insert, update, and delete data

• Some subtypes of SQL include MySQL, PostgreSQL, Oracle SQL, and Microsoft SQL Server

Joins are used to combine rows from two or more tables based on a related column between them.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• FULL JOIN returns rows when there is a match in one of the tabl...read more

SQL is a critical skill for an Application Support Engineer.

• SQL is essential for troubleshooting and resolving issues in applications.

• Knowledge of SQL helps in identifying and fixing performance bottlenecks.

• SQL is used for data analysis and reporting.

• Familiarity with SQL is necessary for working with relational databases.

• Proficiency in SQL can help in automating tasks and improving efficiency.

To resolve the issue without article, identify the root cause and implement appropriate solutions.

• Analyze the issue to determine the underlying cause

• Implement troubleshooting steps to isolate the problem

• Identify and apply appropriate solutions

• Test the resolution to ensure it resolves the issue

• Document the steps taken and update knowledge base if necessary

The server in hotels was working efficiently and reliably.

• The server was able to handle high traffic and data volume without any major issues.

• Regular maintenance and updates were performed to ensure optimal performance.

• The server was also equipped with backup and disaster recovery systems to prevent any data loss or downtime.

• Examples of applications running on the server include reservation systems, billing systems, and guest management systems.

I have used automation in various projects to streamline processes and increase efficiency.

• Automated testing scripts using Selenium for web applications

• Implemented automated deployment processes using Jenkins

• Utilized Ansible for automating server configuration

• Created scripts in Python for data processing and analysis

Application support involves providing assistance and troubleshooting for both UAT (User Acceptance Testing) and production environments.

• Application support engineers are responsible for resolving issues and providing technical support for applications in both UAT and production environments.

• They ensure that applications are functioning properly and troubleshoot any issues that arise during testing or in the live production environment.

• They work closely with developers, teste...read more

The vi command for entering data in a file is 'i'.

• Press 'i' to enter insert mode in vi editor

• Type the data that needs to be entered in the file

• Press 'Esc' key to exit insert mode and return to command mode

The vi command is a powerful text editor that allows for efficient editing and navigation of files.

• Vi is a lightweight and fast editor that can handle large files

• It has a wide range of commands for editing, searching, and replacing text

• Vi is available on most Unix-based systems and can be used in a terminal environment

• It is highly customizable and can be configured to suit individual preferences

• Vi is a valuable tool for programmers and system administrators

SQL is a programming language used for managing and manipulating relational databases.

• SQL stands for Structured Query Language.

• It is used to communicate with and manage relational databases.

• SQL can be used to create, modify, and retrieve data from databases.

• There are different types of SQL, such as MySQL, Oracle, SQL Server, etc.

• Common SQL commands include SELECT, INSERT, UPDATE, and DELETE.

• SQL can be used to perform complex queries and join multiple tables.

• It is widely used ...read more

A shell script to check system health

• Check CPU usage using 'top' or 'ps' command

• Check memory usage using 'free' or 'top' command

• Check disk usage using 'df' command

• Check network connectivity using 'ping' command

• Check system load using 'uptime' command

• Check running processes using 'ps' command

To find a pattern in LINUX Server, you can use tools like grep, awk, or sed to search for specific strings in files or directories.

• Use grep to search for a specific pattern in files: grep 'pattern' file.txt

• Use grep with -r option to search for a pattern recursively in directories: grep -r 'pattern' /path/to/directory

• Use awk to extract and manipulate text based on patterns: awk '/pattern/ {print $1}' file.txt

• Use sed to find and replace text based on patterns: sed 's/pattern/re...read more

My architecture is based on a microservices approach with containerization using Docker and orchestration with Kubernetes.

• Microservices architecture

• Containerization with Docker

• Orchestration with Kubernetes

sed command is a stream editor for filtering and transforming text, while find command is used to search for files in a directory hierarchy.

• sed command is used to perform text transformations on an input stream or file

• find command is used to search for files in a directory hierarchy based on various criteria

• sed command can be used to replace text, delete lines, or perform other text manipulations

• find command can search for files based on name, size, permissions, and other att...read more

Troubleshooting in OTT involves identifying and resolving issues related to streaming services.

• Check internet connection and speed

• Verify account credentials and subscription status

• Clear cache and cookies

• Update app or software

• Restart device

• Contact customer support for further assistance

Designing jobs in Control-M involves creating job definitions, dependencies, and scheduling to automate and manage workflows.

• Define job requirements and parameters

• Set up job dependencies to ensure proper sequencing

• Schedule jobs based on business requirements and priorities

• Monitor job execution and troubleshoot any issues

• Utilize Control-M features like calendars and alerts for efficient job management

Dispatcher and performer are roles in the Robotic Process Automation (RPA) field where the dispatcher assigns tasks to the performer to execute.

• Dispatcher is responsible for assigning tasks to performers

• Performer is responsible for executing the assigned tasks

• Dispatcher and performer work together in a workflow to automate processes

• Example: In a banking automation process, the dispatcher assigns the task of verifying customer information to the performer

Join is a SQL operation used to combine rows from two or more tables based on a related column between them.

• Join is used to retrieve data from multiple tables based on a related column.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;

I am certified in ITIL Foundation and AWS Solutions Architect Associate.

• Certified in ITIL Foundation which focuses on IT service management best practices.

• Certified in AWS Solutions Architect Associate which covers designing and deploying scalable, highly available, and fault-tolerant systems on AWS.

• Continuously learning and updating my skills through online courses and workshops.

Handling difficult customers requires active listening, empathy, and problem-solving skills.

• Stay calm and composed

• Listen actively and empathize with the customer's concerns

• Apologize for any inconvenience caused

• Ask clarifying questions to understand the issue better

• Offer solutions or alternatives to resolve the problem

• Follow up with the customer to ensure satisfaction

I am proficient in SQL with experience writing complex queries and optimizing database performance.

• Proficient in writing complex SQL queries

• Experience optimizing database performance

• Familiar with stored procedures and triggers

I use a variety of tools including monitoring tools, scripting languages, and ticketing systems.

• Monitoring tools such as Nagios and Zabbix

• Scripting languages like Python and Bash

• Ticketing systems like JIRA and ServiceNow

pandas is a powerful data manipulation library in Python for data analysis and cleaning

• Provides data structures like DataFrame and Series for handling tabular data

• Offers tools for reading and writing data from various file formats like CSV, Excel, SQL databases

• Supports data manipulation operations like filtering, sorting, grouping, and merging datasets

• Includes powerful time series functionality for working with time-stamped data

• Enables data visualization through integration w...read more

Examples of select queries in SQL

• Select all columns from a table: SELECT * FROM table_name

• Select specific columns from a table: SELECT column1, column2 FROM table_name

• Select with conditions: SELECT * FROM table_name WHERE condition

• Select with ordering: SELECT * FROM table_name ORDER BY column_name

• Select with grouping: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name

Stored procedure is a precompiled SQL code that can be executed multiple times.

• Stored procedure is used to improve performance by reducing network traffic and improving security.

• It can be used to encapsulate business logic and can be called from different applications.

• It can accept input parameters and return output parameters or result sets.

• Example: EXECUTE dbo.uspGetEmployeeManagers @EmployeeID = 50

• Example: CREATE PROCEDURE dbo.uspGetEmployeeManagers @EmployeeID INT AS SELE...read more

Shell scraping is the process of extracting data from websites using automated tools or scripts.

• Shell scraping involves writing scripts to automate the process of extracting data from websites

• Tools like BeautifulSoup in Python or Scrapy can be used for shell scraping

• Shell scraping is commonly used for web scraping and data mining purposes

32 bit architecture can address up to 4GB of RAM, while 64 bit can address much more.

• 32 bit architecture has a maximum addressable memory of 4GB

• 64 bit architecture can address much more memory, up to 16 exabytes

• 64 bit architecture can perform more calculations per clock cycle

• 64 bit architecture is required for running certain software, such as Adobe Creative Suite

• 32 bit architecture is still commonly used in older systems and some low-end devices

Indexing is used to improve the performance of database queries by allowing for faster data retrieval.

• Indexing creates a data structure that allows for quick lookups of specific values in a database table.

• It helps in reducing the time taken to retrieve data from a database, especially when dealing with large datasets.

• Indexes can be created on one or more columns in a table to speed up search queries.

• Examples of indexes include primary keys, unique keys, and composite indexes.

Dependency injection is a design pattern in which a class receives its dependencies from external sources rather than creating them itself.

• Allows for easier testing by injecting mock dependencies

• Promotes loose coupling between classes

• Improves code reusability and maintainability

• Commonly used in frameworks like Spring in Java

The flow from admission to discharge involves initial assessment, treatment plan creation, ongoing monitoring, and eventual release.

• Initial assessment of patient's condition upon admission

• Creation of a treatment plan based on assessment

• Ongoing monitoring of patient's progress and adjusting treatment as needed

• Consultation with medical team for updates and decisions

• Final discharge planning and release of patient

Using a for loop to fetch the Fibonacci series.

• Initialize variables for the first two numbers in the series (0 and 1).

• Use a for loop to calculate the next number in the series by adding the previous two numbers.

• Store each number in the series in an array.

• Continue the loop until reaching the desired length of the series.

I manage escalations by prioritizing based on severity, communicating with stakeholders, and working towards a resolution.

• Prioritize escalations based on severity and impact on business operations

• Communicate with stakeholders to provide updates and manage expectations

• Work collaboratively with cross-functional teams to troubleshoot and resolve issues

• Document the escalation process and resolution for future reference

UIpath Orchestrator is a web application that enables you to deploy, schedule, monitor, and manage UiPath Robots.

• Centralized platform for managing UiPath Robots

• Allows scheduling and monitoring of robot tasks

• Provides analytics and reporting capabilities

• Enables integration with other systems and applications

Tackling end users involves effective communication, patience, and problem-solving skills.

• Listen actively to understand their issues

• Communicate clearly and patiently

• Provide step-by-step instructions or guidance

• Empathize with their frustrations

• Offer solutions or workarounds

• Follow up to ensure the issue is resolved

RAM is volatile memory used for temporary storage while ROM is non-volatile memory used for permanent storage.

• RAM stands for Random Access Memory and is used for temporary storage of data and program instructions.

• ROM stands for Read-Only Memory and is used for permanent storage of data and program instructions.

• RAM is volatile, meaning it loses its data when power is turned off, while ROM is non-volatile and retains its data.

• Examples of RAM include DDR4, DDR3, etc. Examples of...read more