1000+ Technical Support Engineer Interview Questions and Answers

Relationships in databases define how entities are related to each other. Types include one-to-one, one-to-many, and many-to-many.

• One-to-one relationship: Each record in one table is related to only one record in another table.

• One-to-many relationship: Each record in one table can be related to multiple records in another table.

• Many-to-many relationship: Multiple records in one table can be related to multiple records in another table.

• Examples: A customer can have multiple or...read more

Apologize to customer for representative's mistake via email

• Acknowledge the mistake made by the representative

• Apologize sincerely for the inconvenience caused

• Assure the customer that steps will be taken to prevent similar mistakes in the future

• Offer a solution or compensation if applicable

• Thank the customer for their understanding and continued support

WAN is a network that covers a large geographical area while LAN is a network that covers a small area.

• WAN stands for Wide Area Network while LAN stands for Local Area Network

• WAN covers a large geographical area such as a city, country or even the world while LAN covers a small area such as a building or a campus

• WAN is usually slower and more expensive than LAN

• Examples of WAN include the internet while examples of LAN include home or office networks

Steps to follow when a customer reports inability to edit in Microsoft Word

• Ask the customer if they are receiving any error messages

• Check if the document is in read-only mode

• Check if the customer has the necessary permissions to edit the document

• Check if the customer's version of Microsoft Word is up to date

• Try repairing or reinstalling Microsoft Word

• If all else fails, escalate the issue to a higher level of support

Technical Support Engineer interview questions on CMRR, MOSFET, DC-DC converters, PWM, ferrite core, full bridge converter, SMPS transformer designing, and circuit breaker curves.

• CMRR stands for Common Mode Rejection Ratio and is a measure of how well a differential amplifier can reject common-mode noise.

• The main parameters to select a MOSFET as a switching device are its maximum voltage rating, maximum current rating, on-resistance, and gate charge.

• Types of DC-DC converters ...read more

To release previous IP assigned to a device, use the command 'ipconfig /release' in Windows or 'sudo dhclient -r' in Linux.

• Open Command Prompt or Terminal

• Type 'ipconfig /release' for Windows or 'sudo dhclient -r' for Linux

• Press Enter

• Wait for the command to complete

• The previous IP address will be released

We use various types of software on our systems.

• Operating systems (e.g. Windows, macOS, Linux)

• Productivity software (e.g. Microsoft Office, Google Suite)

• Security software (e.g. antivirus, firewalls)

• Development software (e.g. IDEs, compilers)

• Communication software (e.g. email clients, messaging apps)

• Media software (e.g. media players, photo editors)

• Browser software (e.g. Chrome, Firefox, Safari)

Windows events/logs can be reviewed in Event Viewer. App log shows application events, Security log shows security-related events, and System log shows system events.

• Open Event Viewer by typing 'eventvwr' in the Run dialog box

• Application log shows events related to applications and programs

• Security log shows events related to security, such as logon attempts and resource access

• System log shows events related to the operating system, such as driver failures and system crashes

Check if the data source is accessible and refresh schedule is set up correctly.

• Verify if the data source is accessible from the Power BI service.

• Check if the refresh schedule is set up correctly.

• Ensure that the credentials used for refreshing the report are correct.

• Check if there are any errors or warnings in the refresh history.

• Try refreshing the report manually from the Power BI service.

• Check if there are any issues with the data model or queries used in the report.

Assure the customer that you are capable of handling their issue and offer to escalate if necessary.

• Listen to the customer's concerns

• Empathize with their frustration

• Assure them that you are capable of handling their issue

• Offer to escalate to a senior officer if necessary

• Provide contact information for the senior officer

Resistances connected in series to a voltage source will reduce the current flowing through the circuit.

• Resistances in series add up to increase the total resistance of the circuit.

• This results in a decrease in current flowing through the circuit.

• The voltage drop across each resistance will be proportional to its resistance value.

• This principle is used in voltage dividers and current limiting circuits.

I am comfortable with both Java and Python and willing to work night shifts. Core values are important to me and I have experience working on various projects.

• I have experience working with both Java and Python

• I am willing to work night shifts as required

• Core values are important to me and I believe in honesty, integrity, and teamwork

• I have worked on various projects in the past, including developing a web application using Java and creating a data analysis tool using Python

I would prioritize identifying the root causes of each service outage and work on restoring them one by one.

• Prioritize identifying the root causes of each service outage

• Work on restoring the services one by one

• Communicate with relevant teams to coordinate efforts

• Implement monitoring and alerting systems to prevent future outages

Cement is a binding material used in construction. It is available in different grades and undergoes various tests.

• Cement is a fine powder made from limestone and clay

• Grades of cement include OPC, PPC, and PSC

• Tests for cement include compressive strength, setting time, and soundness

• Concrete is made by mixing cement, sand, and aggregate

• Good quality materials for construction include high-grade cement, clean sand, and durable aggregate

• Ratios and proportions for concrete mix dep...read more

IP address is a unique identifier assigned to each device connected to a network. Classes of IP include A, B, C, D, and E. Workgroup and domain are network organization structures. BSOD is Blue Screen of Death.

• IP address is a unique numerical label assigned to each device on a network

• Classes of IP include A, B, C, D, and E with different ranges of addresses

• Workgroup is a peer-to-peer network where each computer has its own security settings, while domain is a centralized netw...read more

Basic problems in laptops/desktops, desktop parts, OS and networking issues.

• Basic problems: slow performance, overheating, hardware failure, software issues

• Desktop parts: motherboard, CPU, RAM, hard drive, power supply, graphics card

• OS issues: installation, updates, compatibility, driver issues

• Networking issues: connectivity, speed, security

A computer/laptop consists of various components that work together to perform tasks and process data.

• Central Processing Unit (CPU) - the brain of the computer that performs calculations and executes instructions

• Random Access Memory (RAM) - temporary storage for data and instructions that the CPU needs to access quickly

• Hard Disk Drive (HDD) or Solid State Drive (SSD) - permanent storage for data and programs

• Motherboard - the main circuit board that connects and allows communi...read more

Sample SQL LEFT JOIN query to select all columns from agents and wallets, ordered by created_on.

• Use LEFT JOIN to include all records from agents and matching records from wallets.

• Select all columns using * from both tables.

• Filter results to the earliest records using ORDER BY created_on.

• Limit the results to 200 records using LIMIT 200.

Tips for writing an effective email to a customer

• Start with a clear subject line

• Address the customer by name

• Use a friendly and professional tone

• Be concise and to the point

• Offer a solution or next steps

• End with a polite closing

• Proofread for errors

• Include any necessary attachments or links

Yes, group name can be changed. The procedure involves accessing the group settings and editing the name.

• Access the group settings

• Click on the group name

• Edit the name

• Save changes

To create a new user without useradd or add user command, use the usermod command.

• Use the usermod command with the -u option to create a new user

• Specify the username and user ID as arguments

• Example: usermod -u 1001 newuser

• Create a home directory for the new user manually

Play E is staged on Saturday.

• Play C is staged on Tuesday.

• Plays A, F, and B are staged one after the other.

• Play D is not staged on Monday or Wednesday.

Private IP is used within a network while public IP is used to communicate over the internet.

• Private IP is assigned to devices within a local network and is not visible to the internet.

• Public IP is assigned by the internet service provider and is used to communicate over the internet.

• Private IP addresses are in the range of 10.0.0.0 to 192.168.0.0.

• Public IP addresses are unique and can be traced back to a specific device or location.

• Private IP addresses are used for internal ...read more

Selects records from 'cards' where 'pan' starts with '4' and 'active_percentage' is not 20, 50, 60, or 70.

• Use the SQL SELECT statement to retrieve data from the 'cards' table.

• Utilize the LIKE operator to filter 'pan' values starting with '4'. Example: '4%'

• Use the NOT IN clause to exclude specific 'active_percentage' values. Example: NOT IN (20, 50, 60, 70)

• Combine conditions using the WHERE clause to ensure both criteria are met.

I would choose remote desktop software like TeamViewer or AnyDesk to take remote and resolve user issues.

• Remote desktop software allows me to access the user's computer remotely and troubleshoot the issue directly.

• TeamViewer and AnyDesk are popular choices for remote desktop access as they provide secure and reliable connections.

• These software solutions offer features like file transfer, screen sharing, and remote control to efficiently diagnose and fix problems.

• By using remo...read more

I would follow the escalation process and involve higher-level support and management to find a solution.

• Review all available documentation and resources

• Collaborate with colleagues and subject matter experts

• Communicate regularly with the customer to provide updates and manage expectations

• Escalate to higher-level support and management as necessary

• Continue to troubleshoot and test potential solutions

• Document all steps taken and findings for future reference

To check DNS, IP, and GATEWAY, you can use command line tools like ipconfig (Windows) or ifconfig (Linux/Mac).

• For DNS, use the command 'ipconfig /all' on Windows or 'cat /etc/resolv.conf' on Linux/Mac.

• For IP, use the command 'ipconfig' on Windows or 'ifconfig' on Linux/Mac.

• For Gateway, use the command 'ipconfig' on Windows or 'netstat -nr' on Linux/Mac.