800+ 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

To get contact of account with name starting with abc, use Salesforce's SOQL query language.

• Use the Salesforce Object Query Language (SOQL) to query the Account object

• Use the 'LIKE' operator to search for account names starting with 'abc'

• Example query: SELECT Id, Name, Phone FROM Account WHERE Name LIKE 'abc%'

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

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.

The basic requirements for a Windows 10 operating system include a compatible processor, sufficient memory, and available storage space.

• Processor: 1 GHz or faster processor or SoC

• Memory: 1 GB for 32-bit or 2 GB for 64-bit

• Storage: 16 GB for 32-bit OS or 20 GB for 64-bit OS

• Display: 800x600 resolution

• Graphics: DirectX 9 or later with WDDM 1.0 driver

• Internet connection: Required for updates and downloads

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

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

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

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

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

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

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

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

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

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.

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.

Load average is the average number of processes waiting to run on a CPU. Command: 'uptime' or 'top'.

• Load average is a measure of system utilization.

• It is the average number of processes waiting to run on a CPU.

• It is calculated over a period of time, usually 1, 5, and 15 minutes.

• High load average indicates that the system is overloaded.

• Command to check load average: 'uptime' or 'top'.

• Path for 'uptime': /usr/bin/uptime

• Path for 'top': /usr/bin/top

Yes, I have expertise in troubleshooting Windows and hardware issues.

• I have experience in diagnosing and resolving hardware issues such as faulty RAM, hard drive failures, and overheating.

• I am proficient in troubleshooting Windows operating systems, including issues with drivers, software conflicts, and system crashes.

• I have worked with a variety of hardware and software configurations, including desktops, laptops, servers, and peripherals.

• I am familiar with diagnostic tools ...read more

The root user name can be changed by modifying the /etc/passwd file.

• Open the /etc/passwd file in a text editor

• Locate the line that starts with 'root'

• Change the username in the first field to the desired name

• Save and close the file

• Restart the system or use the 'su' command to switch to the new username

Static IP address is fixed and does not change, while Dynamic IP address changes frequently.

• Static IP address is manually assigned to a device and remains the same until changed.

• Dynamic IP address is automatically assigned by a DHCP server and changes each time the device connects to the network.

• Static IP address is useful for servers, printers, and other devices that need a consistent IP address.

• Dynamic IP address is more common for personal devices like laptops and smartpho...read more

Cloud solutions offer scalability, flexibility, and cost-effectiveness compared to traditional dedicated solutions.

• Scalability: Cloud solutions can easily scale up or down based on demand.

• Flexibility: Cloud solutions offer more flexibility in terms of customization and integration with other services.

• Cost-effectiveness: Cloud solutions can be more cost-effective as they eliminate the need for expensive hardware and maintenance costs.

• Examples: AWS, Azure, Google Cloud Platform

To check only files (not folders or links) in Unix directory, use 'find . -maxdepth 1 -type f'

• Use the 'find' command in Unix

• Add the option '-maxdepth 1' to restrict search to current directory

• Add the option '-type f' to search only for files

• This will exclude folders and links from the search

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

Public cloud is shared by multiple organizations while private cloud is dedicated to a single organization. Private cloud is more secure.

• Public cloud is accessible to anyone on the internet while private cloud is accessible only to authorized users.

• Public cloud is less secure as it is shared by multiple organizations and there is a risk of data breaches.

• Private cloud is more secure as it is dedicated to a single organization and has more control over security measures.

• Example...read more

Answers to technical questions related to voltage, P.F, AVR, battery backup, and DG servicing cycle.

• Earth to neutral voltage is the voltage between the earth and neutral points of an electrical system.

• P.F of DG set refers to the power factor of a diesel generator set.

• AVR stands for Automatic Voltage Regulator.

• Battery cell voltage is the voltage produced by a single battery cell.

• The Amp load outcome of a 4K rectifier module depends on the load connected to it.

• The DG servicing ...read more

Symptoms of a blocked EGR in a Diesel engine

• Loss of power and acceleration

• Increased fuel consumption

• Excessive smoke from the exhaust

• Engine misfires or rough idling

• Overheating of the engine

• Check engine light may illuminate

Handling clients requires effective communication and demonstration skills.

• Listen to their queries and concerns patiently.

• Explain the features and benefits of the device clearly.

• Demonstrate the operation process step-by-step.

• Encourage them to ask questions and clarify doubts.

• Provide them with user manuals and support contact details.

• Follow up with them after the demo to ensure satisfaction.

Guide a new user to set up a printer

• Ask the user to connect the printer to the computer and turn it on

• Check if the printer drivers are installed on the computer

• If not, download and install the drivers from the manufacturer's website

• Go to Control Panel > Devices and Printers > Add a printer

• Select the printer from the list of available printers

• Follow the on-screen instructions to complete the setup process

DNS, DHCP, networking, troubleshooting, and Active Directory are all related to managing and troubleshooting network services and infrastructure.

• DNS (Domain Name System) is responsible for translating domain names into IP addresses.

• DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to devices on a network.

• Networking involves the design, implementation, and management of computer networks.

• Troubleshooting is the process of identifying and re...read more

Modem connects to the internet, router connects devices to the network, switch connects devices to each other.

• Modem converts digital signals to analog for transmission over phone lines or cable lines.

• Router directs traffic between devices on a network and connects to the internet through a modem.

• Switch connects devices to each other within a network.

• Example: Modem - cable modem, Router - Linksys router, Switch - Netgear switch

If unable to solve a problem raised by the client, I would escalate it to a higher level of support or involve other team members.

• Assess the problem thoroughly to ensure all possible solutions have been attempted

• Consult with colleagues or seniors for their expertise and guidance

• Escalate the issue to a higher level of support if necessary

• Ensure clear and effective communication with the client throughout the process

A Cron job is a scheduled task that runs automatically at specified intervals in Linux.

• Cron is a time-based job scheduler in Linux.

• It is used to automate repetitive tasks like backups, updates, etc.

• Cron jobs are defined in a crontab file.

• The syntax for setting up a Cron job is: * * * * * command-to-be-executed

• The five asterisks represent the minute, hour, day of the month, month, and day of the week respectively.

• For example, to run a script every day at 3 AM, the syntax would...read more

VPN stands for Virtual Private Network. It is a secure way to connect to a private network over the internet.

• To connect to a VPN, you need to have a VPN client installed on your device.

• You also need to have the login credentials for the VPN network.

• Once you have the client installed and the credentials, you can connect to the VPN by selecting the network and entering your login details.

• VPN can be used to access resources on a private network while working remotely or to secur...read more

Resting foot on clutch pedal while driving can cause premature wear and tear of the clutch assembly.

• The clutch pedal is designed to disengage the clutch when pressed down.

• Resting the foot on the clutch pedal causes the clutch to partially engage, leading to friction and heat buildup.

• This can cause premature wear and tear of the clutch assembly, resulting in costly repairs.

• It is important to avoid resting the foot on the clutch pedal while driving to ensure the longevity of th...read more

Stay calm and listen to the customer's concerns.

• Remain calm and composed

• Listen attentively to the customer's complaints

• Apologize for the inconvenience caused

• Assure the customer that you will do your best to resolve the issue

• Ask relevant questions to gather more information about the problem

• Offer possible solutions or troubleshooting steps

• If necessary, escalate the issue to a higher level of support

BSOD is a blue screen error that appears on Windows operating systems when a critical system error occurs.

• BSOD is also known as a stop error or a system crash

• It usually displays a blue screen with white text indicating the error message

• Common causes include hardware failure, driver issues, and software conflicts

• Examples of BSOD error messages include IRQL_NOT_LESS_OR_EQUAL and PAGE_FAULT_IN_NONPAGED_AREA

The reaction when water is added to cement is called hydration.

• Hydration is a chemical reaction that occurs between water and cement.

• During hydration, the water molecules react with the cement particles, forming chemical compounds.

• This reaction is exothermic, releasing heat as the cement hardens and gains strength.

• Hydration is a crucial process in the setting and curing of cement-based materials.

• Examples of hydrated compounds formed during this reaction include calcium silica...read more

To reinstall drivers for any hardware, follow these steps.

• Uninstall the current driver from Device Manager

• Download the latest driver from the manufacturer's website

• Install the new driver by running the setup file

• Restart the computer to complete the installation

• If the driver is not available on the website, use Windows Update or a driver update tool

• Ensure compatibility with the operating system and hardware version

Shaft alignment in hydel power projects is carried out using laser alignment tools and techniques.

• Laser alignment tools are used to measure and correct shaft misalignment.

• The process involves measuring the offset and angular misalignment of the shafts.

• The readings are then used to adjust the position of the shafts until they are aligned within the required tolerances.

• Alignment is critical for efficient and safe operation of the hydel power project.

• Examples of laser alignment ...read more