100+ IT Engineer Interview Questions and Answers

Foreign key is a column in a table that refers to the primary key of another table, while reference key is not a database term.

• Foreign key is used to establish a relationship between two tables in a database.

• Reference key is not a database term, but it can refer to a key used in programming to refer to an object or method.

• Foreign key ensures data integrity and consistency in the database.

• Reference key is used in programming to create associations between objects or methods.

• Ex...read more

I have extensive experience troubleshooting computer hardware and network issues.

• Proficient in diagnosing and resolving hardware issues such as faulty components or connectivity problems

• Skilled in troubleshooting network issues including slow internet speeds or connection drops

• Experience with using diagnostic tools and software to identify and fix problems

• Familiar with common hardware and network configurations in both Windows and Mac environments

FAT32 is an older file system with limitations on file size and NTFS is a newer file system with advanced security features.

• FAT32 has a maximum file size of 4GB while NTFS can handle much larger files.

• NTFS supports file compression, encryption, and permissions while FAT32 does not.

• FAT32 is compatible with more devices and operating systems than NTFS.

• NTFS has a journaling feature that helps recover data in case of a system crash.

• FAT32 is commonly used for USB drives and older ...read more

Windows backup can be taken using built-in tools like File History or Backup and Restore.

• Open Control Panel and select Backup and Restore

• Click on Set up backup and follow the prompts

• Choose the files and folders you want to backup

• Alternatively, use File History to backup specific folders

• You can also use third-party backup software like Acronis True Image

The network id for ip 192.168.0.23 is 192.168.0.0.

• Identify the subnet mask for the network

• Perform a bitwise AND operation between the IP address and subnet mask

• The result is the network id

I would start by checking the application logs, verifying configurations, and testing different scenarios.

• Check application logs for any errors or warnings

• Verify configurations to ensure they are correct

• Test different scenarios to replicate the issue

• Use monitoring tools to track performance metrics

• Collaborate with team members to troubleshoot and find solutions

Commands used in Dockerfile are instructions that define how an image should be built.

• FROM: specifies the base image

• RUN: executes commands in a new layer on top of the current image

• COPY: copies files from the host machine to the image

• CMD: specifies the default command to run when a container is started

• EXPOSE: exposes ports from the container to the host machine

• WORKDIR: sets the working directory for any RUN, CMD, ENTRYPOINT, COPY, and ADD instructions

• ENV: sets environment var...read more

To resolve an excited issue for a user, listen actively, empathize, provide clear instructions, and offer reassurance.

• Listen actively to the user's concerns and frustrations.

• Empathize with the user's emotions and acknowledge their feelings.

• Provide clear instructions on how to resolve the issue step by step.

• Offer reassurance that the problem will be resolved and provide a timeline if possible.

Booting system involves initializing hardware, loading operating system and executing startup scripts.

• Power on the computer to start the boot process

• BIOS/UEFI firmware checks hardware components

• Bootloader loads operating system kernel

• Operating system initializes drivers and services

• Startup scripts run to configure system settings

• Examples: GRUB, Windows Boot Manager

A ticketing tool is a software used to manage and track customer support requests. Encryption is the process of converting data into a code to prevent unauthorized access.

• Ticketing tools help IT engineers manage and prioritize support requests

• Encryption is used to protect sensitive data from unauthorized access

• Common encryption methods include AES, RSA, and SHA

• Encryption is used in various applications such as online banking, email, and messaging services

I have X years of experience in the IT engineering field.

• I have worked on various projects involving network infrastructure design and implementation.

• I am proficient in programming languages such as Java and Python.

• I have experience in troubleshooting and resolving technical issues.

• I have worked with different operating systems such as Windows, Linux, and macOS.

• I have experience in cloud computing and virtualization technologies.

• I have worked with different databases such as ...read more

I handled an average of 20-25 calls tickets per day and took around 30-45 minutes to solve each ticket.

• Handled 20-25 calls tickets per day

• Took 30-45 minutes to solve each ticket

• Prioritized urgent tickets first

• Collaborated with team members to solve complex tickets

Ping command is used to test the connectivity between two devices on a network.

• Ping command sends an ICMP echo request to the target device and waits for a response.

• It measures the round-trip time for the packet to travel from the source device to the target device and back.

• It can also be used to determine the IP address of a device on a network.

• Ping command is useful for troubleshooting network connectivity issues.

• It can also be used to check the status of a website or serve...read more

LAN and WAN are types of computer networks. RJ45 cable is important for connecting devices in a network.

• LAN stands for Local Area Network and is used to connect devices within a small geographical area like an office or a building.

• WAN stands for Wide Area Network and is used to connect devices over a large geographical area like cities or countries.

• RJ45 cable is used to connect devices in a network and is important for transmitting data between them.

• RJ45 cable is also known a...read more

Data can be maintained using various software such as MS Office, Tally, ERP, and CRM.

• Identify the type of data to be maintained

• Choose the appropriate software for the specific data

• Ensure regular backups are taken to prevent data loss

• Implement security measures to protect sensitive data

• Train employees on how to use the software effectively

Active Directory is a Microsoft service that manages network resources and allows for centralized authentication and authorization.

• Active Directory is used to manage users, computers, and other network resources

• It allows for centralized authentication and authorization

• It uses a hierarchical structure of domains and organizational units (OUs)

• Group Policy Objects (GPOs) can be used to enforce policies and settings across the network

• Active Directory can integrate with other Micr...read more

The subnet mask for IP 192.168.45.21 is typically 255.255.255.0.

• Subnet masks determine the network and host portions of an IP address.

• The default subnet mask for a Class C network is 255.255.255.0.

• Subnet masks are represented in dotted decimal notation.

Print even numbers in Python and Fibonacci series in Python.

• For printing even numbers in Python, use a loop to iterate through a range of numbers and check if each number is divisible by 2.

• For printing Fibonacci series in Python, use a loop to generate the series by adding the previous two numbers in the sequence.

• Example for even numbers in Python: for i in range(1, 11): if i % 2 == 0: print(i)

• Example for Fibonacci series in Python: a, b = 0, 1 for _ in range(10): print(a) a,...read more

IP address can be found using command prompt or network settings.

• Use 'ipconfig' command in command prompt to find IP address

• Go to network settings and look for 'IPv4 Address' or 'IP Address'

• Use online IP lookup tools to find IP address of a website

Troubleshooting a system involves identifying and resolving issues that prevent it from functioning properly.

• Start by gathering information about the problem and its symptoms

• Use diagnostic tools to identify the root cause of the issue

• Develop and implement a plan to resolve the problem

• Test the system to ensure the issue has been resolved

• Document the troubleshooting process and solution for future reference

The colour coding for straight cable follows a specific pattern to ensure proper connections.

• The colour coding for straight cable typically follows the T568A or T568B standard

• In T568A, the colour coding is: white-green, green, white-orange, blue, white-blue, orange, white-brown, brown

• In T568B, the colour coding is: white-orange, orange, white-green, blue, white-blue, green, white-brown, brown

Troubleshooting network switches involves diagnosing connectivity issues, configuration errors, and hardware failures.

• Check physical connections: Ensure all cables are securely connected and undamaged.

• Verify switch configuration: Use commands like 'show running-config' to check for misconfigurations.

• Test VLAN settings: Ensure devices are on the correct VLAN and that VLANs are properly configured.

• Inspect for link lights: Check the LED indicators on the switch ports for connect...read more

Data backup of laptop/pc can be done using external hard drives, cloud storage, or backup software.

• Use an external hard drive to manually backup important files

• Use cloud storage services like Google Drive or Dropbox to backup files online

• Use backup software like Acronis True Image or EaseUS Todo Backup to automate the backup process

• Create a backup schedule to ensure regular backups are performed

• Test the backup to ensure it can be restored in case of data loss

Used logic to troubleshoot network connectivity issue by systematically checking hardware and software components.

• Identified the symptoms of the issue, such as devices not connecting to the network or slow internet speeds.

• Checked physical connections, network settings, and device configurations to pinpoint the root cause.

• Used troubleshooting tools like ping, traceroute, and network analyzers to gather data and analyze network traffic.

• Implemented solutions based on the analysi...read more

OST and PST are file formats used by Microsoft Outlook for storing email data.

• OST files are used for offline access to Exchange server mailboxes

• PST files are used for archiving and backing up email data

• OST files are automatically created when Outlook is configured with Exchange server

• PST files can be created manually by the user

• OST files are typically larger in size than PST files

A DHCP server is a network server that automatically assigns IP addresses and other network configuration settings to devices on a network.

• DHCP servers provide dynamic IP address allocation to devices on a network

• They also assign subnet masks, default gateways, DNS server addresses, and other network configuration parameters

• DHCP servers use a lease mechanism to control the amount of time a device can use an IP address before it must be renewed

• DHCP servers reduce the administr...read more

Working in Linux involves using the command line interface to navigate and execute tasks.

• Learn basic commands such as ls, cd, mkdir, and rm

• Understand file permissions and how to change them with chmod

• Use package managers like apt-get or yum to install and update software

• Become familiar with text editors like vi or nano

• Use shell scripting to automate tasks

• Join online communities and forums for support and learning opportunities