800+ Technical Support Engineer Interview Questions and Answers

TCP/IP is a set of protocols used for communication over the internet. OSI layer is a model for network communication.

• TCP/IP is a suite of communication protocols used for transmitting data over the internet.

• It consists of two main protocols: Transmission Control Protocol (TCP) and Internet Protocol (IP).

• TCP ensures reliable transmission of data while IP is responsible for routing packets to their destination.

• OSI layer is a conceptual model for network communication that defi...read more

MFA is a security process that requires multiple forms of verification to access an account or system.

• MFA combines two or more authentication factors such as passwords, biometrics, security tokens, etc.

• It provides an extra layer of security to prevent unauthorized access.

• Examples of MFA include using a password along with a fingerprint scan or receiving a code on your phone to log in.

• MFA is commonly used in online banking, email accounts, and other sensitive systems.

Guide non tech savvy user over phone to fix broken computer

• Ask user to describe the problem and what they see on the screen

• Guide user to check if all cables are properly connected

• Instruct user to restart the computer and check if problem persists

• If problem still exists, guide user to run basic troubleshooting steps

• If issue is not resolved, escalate to higher level of support

Public and private keys are used for secure communication and encryption.

• Public key is used for encryption and can be shared with anyone.

• Private key is used for decryption and should be kept secret.

• They are used in various security protocols like SSL, SSH, and PGP.

• Example: When you visit a website with SSL, your browser uses the website's public key to encrypt data, which can only be decrypted by the website's private key.

• Another example: When you send an encrypted email usin...read more

Initial check points to look for if a vehicle drags to left side at 80 KMPH on highway.

• Check tire pressure and alignment

• Check suspension system

• Check for any damage to the steering components

• Check for any uneven wear on the tires

• Check for any brake issues

Efficient memory management is crucial for handling large amounts of data in a database.

• Use pagination to retrieve data in smaller chunks instead of all at once

• Implement caching mechanisms to reduce the need for frequent database queries

• Optimize database queries and indexes to improve retrieval and storage efficiency

Packet capture data transfer can vary. Wireshark and tcpdump can be used to check.

• The amount of data transfer in a packet capture can vary depending on the network traffic.

• Wireshark and tcpdump are commonly used tools to analyze packet captures.

• Packet captures can be used to troubleshoot network issues and identify potential security threats.

• Packet captures can also be used to analyze application performance and identify bottlenecks.

• It's important to filter and analyze the ca...read more

DHCP is a network protocol that automatically assigns IP addresses to devices, DNS translates domain names to IP addresses, routers connect networks, gateways connect networks with different protocols, booting into safe mode allows troubleshooting.

• DHCP automatically assigns IP addresses to devices on a network

• DNS translates domain names to IP addresses for easier access

• Routers connect different networks together to enable communication

• Gateways connect networks with different ...read more

Check for file corruption and try opening in safe mode.

• Check if the file is corrupted or damaged.

• Try opening the file in safe mode.

• Check for any updates or patches for the software.

• Try opening the file on a different computer.

• Use a file recovery tool to repair the file.

802.11 features enable wireless communication between devices using radio frequencies.

• 802.11 standards define the protocols for wireless local area networks (WLANs).

• Features include data rates, frequency bands, and security protocols.

• Examples of 802.11 features include Wi-Fi Direct, WPA2 encryption, and beamforming.

• 802.11 features allow for faster and more reliable wireless communication.

• Different versions of 802.11 have different capabilities and limitations.

Power BI has various modes to get data from different sources.

• Power Query Editor

• DirectQuery

• Import

• Live Connection

• Power BI API

• Power BI Desktop

• Power BI Mobile

• Power BI Gateway

• Third-party connectors

To prove that the bulb in a refrigerator actually goes off upon closing the door, you can use a simple test involving observation and a manual switch.

• Open the refrigerator door and observe the bulb is on.

• Manually press the switch that is triggered when the door is closed to simulate the door being closed.

• Observe that the bulb turns off when the switch is pressed, indicating that it does go off when the door is closed.

The home state is not specified. The types of ACs depend on the brand and model. To start a manual DG set, follow the instructions in the manual. Good neutral is a stable and balanced neutral wire. The voltage needed to power up a 320KV DG set depends on the specific model. When PF goes down, take measures to improve it.

• Types of ACs depend on brand and model

• Follow manual instructions to start a manual DG set

• Good neutral is a stable and balanced neutral wire

• Voltage needed to p...read more

Handling hot customers and prioritizing P1, P2 tickets

• Listen actively and empathize with the customer's frustration

• Remain calm and professional, avoid taking things personally

• Offer solutions and follow up promptly

• Prioritize P1 tickets based on severity and impact on business operations

• Assign P2 tickets based on urgency and customer impact

• Communicate clearly with customers about ticket status and resolution timelines

There are various types of compressors used in power plants such as centrifugal, reciprocating, screw, and axial flow compressors.

• Centrifugal compressors are commonly used in power plants for air compression.

• Reciprocating compressors are used for high-pressure applications.

• Screw compressors are used for low-pressure applications.

• Axial flow compressors are used for large volumes of air at low pressure.

• Other types of compressors used in power plants include diaphragm compressor...read more

Active Directory is a Microsoft service that manages network resources and users. FSMO roles are used to manage AD operations.

• Active Directory is a centralized database that stores information about network resources and users.

• FSMO (Flexible Single Master Operations) roles are used to manage AD operations, such as domain naming, schema updates, and password changes.

• To install AD role, go to Server Manager > Add Roles and Features > select Active Directory Domain Services > fo...read more

To check if webcam is working or not, follow these steps.

• Check if the webcam is properly connected to the computer

• Open the webcam application or any video conferencing app to check if the webcam is working

• Check if the webcam drivers are installed and updated

• Restart the computer and try again

• If the webcam still doesn't work, try connecting it to another computer to check if it's a hardware issue

List of Windows Operating Systems in chronological order.

• Windows 1.0 (1985)

• Windows 2.0 (1987)

• Windows 3.0 (1990)

• Windows 95 (1995)

• Windows 98 (1998)

• Windows 2000 (2000)

• Windows ME (2000)

• Windows XP (2001)

• Windows Vista (2006)

• Windows 7 (2009)

• Windows 8 (2012)

• Windows 8.1 (2013)

• Windows 10 (2015)

Service request is a formal request for help or information, while incident is an unplanned event that disrupts normal operation.

• Service request is a proactive request for assistance or information, often initiated by the user.

• Incident is a reactive event that causes a disruption in normal operations, such as a system outage or software malfunction.

• Service requests are typically routine and can be planned in advance, while incidents are unexpected and require immediate attent...read more

Creating a clone image at HDD can be done quickly using disk cloning software.

• Use disk cloning software like Clonezilla or Acronis True Image

• Connect the source and target hard drives to the same computer

• Select the source drive and target drive in the cloning software

• Start the cloning process and wait for it to complete

• The time taken for cloning depends on the size of the source drive and the speed of the computer

DNS stands for Domain Name System. It is a system that translates domain names into IP addresses.

• DNS is responsible for resolving domain names to IP addresses

• DNS servers store information about domain names and their corresponding IP addresses

• To check DNS server address, use command prompt and type 'nslookup' followed by the domain name

• The result will display the IP address of the DNS server

A modem is a device that converts digital signals to analog signals and vice versa, allowing computers to communicate over telephone lines.

• Modem stands for modulator-demodulator.

• It is used to connect a computer to the internet via a telephone line.

• It converts digital signals from the computer into analog signals that can be transmitted over the phone line.

• It also converts analog signals from the phone line into digital signals that the computer can understand.

• There are differ...read more

DHCP is a network protocol that assigns IP addresses to devices on a network. DNS is a system that translates domain names to IP addresses.

• DHCP stands for Dynamic Host Configuration Protocol

• DHCP assigns IP addresses to devices on a network

• DNS stands for Domain Name System

• DNS translates domain names to IP addresses

• DNS is used to access websites and other resources on the internet

RAM and ROM are types of computer memory. Control Panel is a settings menu. Shortcuts are quick ways to open programs.

• RAM stands for Random Access Memory and is used for temporary storage of data that the computer is currently using.

• ROM stands for Read-Only Memory and is used for permanent storage of data that cannot be changed.

• Control Panel is a settings menu in Windows that allows users to change various system settings such as display, sound, and network settings.

• Shortcuts...read more

Efficient data modelling techniques like normalization and indexing are crucial for managing large data sets.

• Normalization helps reduce redundancy and improve data integrity by organizing data into separate tables and linking them through relationships.

• Indexing helps improve query performance by creating indexes on columns frequently used in search conditions.

• Partitioning can also be used to divide large data sets into smaller, more manageable chunks.

• Data compression techniqu...read more

To get data in a table using js, you can use DOM manipulation methods like getElementById or querySelector. Other ways to print output include console.log and innerHTML. A block in js is a set of statements enclosed in curly braces.

• Use getElementById or querySelector to get data in a table using js

• Other ways to print output include console.log and innerHTML

• A block in js is a set of statements enclosed in curly braces, used to group code together

To troubleshoot an overheating PC, check for dust buildup, ensure proper ventilation, monitor CPU usage, and check for faulty hardware.

• Check for dust buildup in the fans and heatsinks

• Ensure proper ventilation by checking the placement of the PC and the surrounding environment

• Monitor CPU usage to identify any processes that may be causing excessive heat

• Check for faulty hardware such as a malfunctioning fan or power supply

• Consider applying new thermal paste to the CPU

• Run stress...read more

Five components on a motherboard are CPU, RAM, GPU, BIOS, and SATA ports.

• CPU (Central Processing Unit) - the brain of the computer that performs most of the calculations and tasks.

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

• GPU (Graphics Processing Unit) - responsible for rendering images, videos, and graphics.

• BIOS (Basic Input/Output System) - firmware that initializes hardware components and starts the operat...read more

HDD is a traditional spinning hard drive, while SSD is a newer, faster type of drive that uses flash memory.

• HDDs have moving parts, while SSDs do not

• SSDs are faster and more reliable than HDDs

• SSDs are more expensive than HDDs

• HDDs have larger storage capacity than SSDs

• Examples of HDDs: Western Digital Black, Seagate Barracuda

• Examples of SSDs: Samsung 970 EVO, Crucial MX500

The questions cover topics related to heat exchangers, types of distillation, modes of heat transfer, and basic engineering concepts.

• Types of heat exchangers include shell and tube, plate heat exchangers, and double pipe heat exchangers.

• Corrosive liquids are typically charged on the tube side of a heat exchanger.

• The number of tubes in a heat exchanger can be calculated based on the required heat transfer area and tube dimensions.

• Compressible liquids can change volume signific...read more

Use the 3L cup to measure 4L of water by filling it up, pouring it into the 5L cup, filling the 3L cup again, and pouring it into the 5L cup until it reaches 4L.

• Fill the 3L cup and pour it into the 5L cup (3L in 5L cup, 0L in 3L cup)

• Fill the 3L cup again and pour it into the 5L cup until it is full (1L in 5L cup, 2L in 3L cup)

• Now you have 4L of water in the 5L cup

Check power supply, cables, and connections. Reset BIOS settings. Replace faulty hardware if necessary.

• Check power supply unit for any issues

• Ensure all cables are properly connected

• Reset BIOS settings to default

• Check for any faulty hardware and replace if necessary

Customer support is providing assistance and resolving issues for customers.

• Good customer support involves being responsive and empathetic to customers' needs.

• It also requires clear communication and timely resolution of issues.

• Examples of good customer support include personalized interactions, proactive problem-solving, and going above and beyond to exceed expectations.

No, two different users cannot have the same UID.

• UID (User ID) is a unique identifier assigned to each user in a system.

• Having two different users with the same UID can cause conflicts and security issues.

• UIDs are typically assigned sequentially and are unique within a system.

• For example, in Linux systems, UID 0 is reserved for the root user and cannot be assigned to any other user.

Yes, I am comfortable in handling clients all over the world.

• I have experience in working with clients from different countries and cultures.

• I am familiar with different time zones and can adjust my schedule accordingly.

• I have excellent communication skills and can effectively communicate with clients in different languages.

• I am willing to learn about different cultures and customs to better serve clients.

• I am able to work remotely and can use various communication tools to s...read more

The command to know IP address is 'ipconfig' on Windows and 'ifconfig' on Unix/Linux.

• On Windows, open Command Prompt and type 'ipconfig'. Look for 'IPv4 Address' under the Ethernet or Wi-Fi adapter section.

• On Unix/Linux, open Terminal and type 'ifconfig'. Look for 'inet' under the Ethernet or Wi-Fi adapter section.

• There are also online tools and websites that can display your IP address, such as whatismyip.com.

Cloud technology offers flexibility and scalability, but also comes with security concerns and potential downtime.

• Advantages: flexibility, scalability, cost-effectiveness, accessibility, automatic updates

• Disadvantages: security concerns, potential downtime, dependency on internet connectivity, limited control over infrastructure

• Examples: Amazon Web Services, Microsoft Azure, Google Cloud Platform

• Security concerns: data breaches, unauthorized access, data loss

• Downtime: can res...read more

To release and renew IP in CMD, use the commands 'ipconfig /release' and 'ipconfig /renew'.

• Open Command Prompt

• Type 'ipconfig /release' and press Enter to release the current IP address

• Type 'ipconfig /renew' and press Enter to obtain a new IP address

• You can also use 'ipconfig /all' to view detailed information about network interfaces

PowerShell is a more advanced command-line interface than CMD, with more features and capabilities.

• PowerShell is object-oriented, while CMD is text-based

• PowerShell has more advanced scripting capabilities

• PowerShell has more built-in commands and modules

• CMD is more limited in its capabilities

• Troubleshooting commands for PowerShell include Get-Help, Get-Command, and Test-NetConnection

• Troubleshooting commands for CMD include Ping, Ipconfig, and Netstat

Exchange is a Microsoft email and calendaring server. Current version is Exchange Server 2019.

• Exchange is used for email and calendaring in Microsoft environments

• Exchange Server 2019 is the latest version

• Troubleshooting Outlook often involves checking Exchange connectivity

The modem is connected to the router in a sequential manner.

• The modem is the first device in the sequence, as it connects to the internet service provider (ISP).

• The router is then connected to the modem, acting as a gateway between the modem and the local network.

• Devices such as computers, smartphones, and smart TVs are connected to the router to access the internet.

• The sequential connection allows the router to manage network traffic and provide internet connectivity to mult...read more

Specialized ink is required for printing on glass, plastic, ceramic, and metal.

• For glass, ceramic, and metal, ceramic ink is required.

• For plastic, solvent-based ink or UV-curable ink is required.

• Metallic inks are used for printing on metal.

• Inkjet printers are commonly used for printing on these surfaces.

• The type of ink required may also depend on the printing method used.

Profile and permissions set determine the level of access and capabilities a Technical Support Engineer has within a system.

• Profile defines the roles and responsibilities of the Technical Support Engineer within the organization.

• Permissions set specifies what actions the Technical Support Engineer can perform within the system.

• Examples of permissions include read-only access, write access, delete access, etc.

IP can be assigned in RHEL 7 through both command line and GUI.

• Command Line: Use 'nmcli' command to assign IP address, subnet mask, gateway and DNS server.

• GUI: Go to 'Settings' -> 'Network' -> select the interface -> click on the gear icon -> select 'IPv4' or 'IPv6' tab -> assign IP address, subnet mask, gateway and DNS server.

• To verify the IP address, use 'ip addr show' command in the terminal.

The specification of cement, sand, and aggregate refers to the ratio of these materials used in concrete mixtures.

• The specification is usually expressed as a ratio of the materials used in the mixture.

• For example, a common specification for concrete is 1:2:3, which means one part cement, two parts sand, and three parts aggregate.

• The specification can vary depending on the intended use of the concrete, such as for foundations, walls, or pavements.

• The specification also takes i...read more

Electrical elements deal with electricity while electronic elements deal with controlling the flow of electricity.

• Electrical elements are passive components that do not control the flow of electricity.

• Electronic elements are active components that control the flow of electricity.

• Examples of electrical elements include resistors, capacitors, and inductors.

• Examples of electronic elements include transistors, diodes, and integrated circuits.

There are two main types of storage devices: HDD (Hard Disk Drive) and SSD (Solid State Drive). Types of SSD include SATA, NVMe, and PCIe.

• HDD (Hard Disk Drive)

• SSD (Solid State Drive)

• Types of SSD: SATA, NVMe, PCIe