100+ Information Technology Support Engineer Interview Questions and Answers

Answering questions related to troubleshooting BSOD, installing OS, network types, cloud, and S3 bucket.

• To troubleshoot BSOD, check for hardware issues, update drivers, and run diagnostic tools.

• Before installing OS, check hardware compatibility, backup important data, and ensure proper boot order.

• Network types include LAN, WAN, MAN, PAN, WLAN, and SAN.

• Cloud is a network of remote servers used to store, manage, and process data.

• S3 bucket is a storage service provided by Amazon...read more

We use ServiceNow as our ticketing tool.

• ServiceNow is a popular ticketing tool used by many organizations.

• It provides a centralized platform for managing IT service requests and incidents.

• ServiceNow offers features like ticket creation, assignment, tracking, and resolution.

• It allows for efficient communication between IT support engineers and end-users.

• ServiceNow also provides reporting and analytics capabilities for performance monitoring.

• Other ticketing tools commonly used ...read more

Router forwards data packets between computer networks, while switch connects devices within a network. TCP is connection-oriented, UDP is connectionless. SMTP uses port 25, POP3 uses port 110. Printer is a device that produces text or graphics on paper.

• Router forwards data between networks, switch connects devices within a network

• TCP is connection-oriented, UDP is connectionless

• SMTP uses port 25, POP3 uses port 110

• Printer produces text or graphics on paper

• BSOD stands for Blu...read more

DHCP server assigns IP addresses to devices on a network. DNS translates domain names to IP addresses. AD is used to manage users and resources. Network is a collection of devices connected together. Domain is a group of network resources under a single name. Patch panel and IO side use different color codes for cables. Straight cable code is 568B. Cross cable color code is different from straight cable color code. SMTP port number is 25. POP port number is 110. IMAP port num...read more

Voice calls use frequencies in the range of 300 Hz to 3400 Hz.

• Voice calls use analog signals that are transmitted over the airwaves or through cables.

• The human voice typically falls within the frequency range of 300 Hz to 3400 Hz.

• The quality of a voice call can be affected by factors such as network congestion and signal interference.

To troubleshoot a system that is restarting continuously, you can follow these steps:

• Check for hardware issues such as overheating or faulty components

• Verify if any recent software or driver updates have caused the issue

• Examine the system logs for any error messages or patterns

• Test the system in safe mode to determine if a third-party application is causing the problem

• Perform a system restore to a previous stable state

• Scan for malware or viruses that may be affecting the syst...read more

VPN stands for Virtual Private Network. It is used to create a secure and encrypted connection over a public network.

• VPN allows users to securely access a private network over the internet.

• It provides privacy and anonymity by masking the user's IP address and encrypting their internet traffic.

• VPN is commonly used to access company networks remotely, protect sensitive data, bypass censorship or geo-restrictions, and enhance online security.

• Examples of VPN protocols include Ope...read more

IT infrastructure encompasses hardware, software, networks, and services that support IT operations and services.

• Hardware: Physical components like servers, computers, and networking devices (e.g., routers, switches).

• Software: Operating systems, applications, and management tools that run on the hardware.

• Networking: Connects devices and enables communication, using protocols like TCP/IP.

• Data Storage: Solutions like SAN, NAS, and cloud storage for data management and backup.

• Vi...read more

To troubleshoot Wi-Fi issues at home, follow a systematic approach to identify and resolve connectivity problems.

• Check if the Wi-Fi is enabled on your device. For example, ensure airplane mode is off.

• Restart the router by unplugging it for 10 seconds and plugging it back in.

• Verify that other devices can connect to the Wi-Fi. If they can, the issue may be with the specific device.

• Check for any service outages in your area by contacting your Internet Service Provider (ISP).

• Ensu...read more

I will check the network connection and troubleshoot the issue.

• Check if other devices are also affected

• Restart the router/modem

• Check for any loose cables

• Ping the default gateway

• Contact the ISP if necessary

When a system won't start, I will perform troubleshooting steps to identify and resolve the issue.

• Check power supply and connections

• Verify hardware components are properly seated

• Check for error messages or beeps

• Attempt a power cycle

• Check BIOS settings

• Test with a different power source or outlet

• Check for software issues or conflicts

• Perform hardware diagnostics

• Seek assistance from colleagues or escalate to higher-level support if necessary

Answers to common IT support questions such as installing OS, DNS, DHCP, updating drivers, configuring IP, and joining a domain.

• To install an OS, insert the installation media and follow the prompts.

• DNS (Domain Name System) is a system that translates domain names to IP addresses.

• DHCP (Dynamic Host Configuration Protocol) assigns IP addresses to devices on a network.

• To update drivers, go to the device manufacturer's website and download the latest drivers.

• To configure IP, go ...read more

DNS translates domain names to IP addresses, while DHCP assigns IP addresses to devices on a network.

• DNS (Domain Name System) resolves human-readable domain names (e.g., www.example.com) to IP addresses (e.g., 192.0.2.1).

• DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network, simplifying network management.

• DNS servers cache responses to improve speed and reduce load on authoritative servers.

• DHCP can provide additional configurati...read more

Computer speed can vary significantly based on hardware, software, and usage. Understanding these factors is crucial for optimization.

• CPU speed: Measured in GHz, a higher number indicates faster processing. Example: A 3.5 GHz CPU is faster than a 2.0 GHz CPU.

• RAM: More RAM allows for better multitasking. Example: 16GB RAM can handle more applications simultaneously than 4GB.

• SSD vs HDD: SSDs are significantly faster than traditional HDDs. Example: Booting from an SSD can be 3-4...read more

Building friendly relationships with employees enhances collaboration and creates a positive work environment.

• 1. Open Communication: Encourage regular check-ins and feedback sessions to foster transparency. For example, weekly team meetings can help address concerns.

• 2. Show Empathy: Understand employees' personal challenges and offer support. For instance, if an employee is facing a family issue, provide flexible work hours.

• 3. Celebrate Achievements: Recognize and celebrate b...read more

Effective management of company culture fosters collaboration, innovation, and employee satisfaction, driving overall success.

• Establish clear values and mission: Ensure all employees understand the company's core values, like integrity and teamwork.

• Encourage open communication: Create channels for feedback, such as regular town hall meetings or anonymous suggestion boxes.

• Promote diversity and inclusion: Implement programs that celebrate diverse backgrounds and perspectives, e...read more

To check internet connection, use ping command or check network settings.

• Use ping command to check connectivity to a specific website or IP address

• Check network settings to ensure correct IP address and DNS settings

• Try resetting modem or router

• Check for any network outages or maintenance in the area

Azure AD is a cloud-based identity and access management service provided by Microsoft.

• Azure AD provides single sign-on (SSO) and multi-factor authentication (MFA) capabilities.

• It allows users to access various applications and services with a single set of credentials.

• Azure AD can be integrated with on-premises Active Directory to provide hybrid identity management.

• To configure Azure AD login ID, create a user account in Azure AD and assign appropriate licenses.

• To configure ...read more

Answers to common IT support questions

• VPN stands for Virtual Private Network and is used to securely connect to a remote network

• Active Directory is a Microsoft service used to manage users, computers, and other resources on a network

• A blue screen error, also known as a blue screen of death, is a system error that causes a blue screen to appear on a computer

• A domain is a group of computers and devices on a network that share a common set of rules and procedures

DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that automatically assigns IP addresses to devices on a network.

• DHCP is used to manage and allocate IP addresses in a network.

• It allows devices to obtain IP addresses dynamically instead of manually configuring them.

• DHCP also provides additional network configuration information like subnet mask, default gateway, and DNS server addresses.

• It uses a client-server model, where DHCP servers assign IP ad...read more

To handle installation systems in a server room, follow these pointers:

• Ensure proper power supply and cooling systems are in place

• Organize cables and label them for easy identification

• Install and configure necessary hardware and software components

• Implement security measures to protect the server room

• Regularly monitor and maintain the server room environment

• Document all installations and changes made for future reference

I have experience with various IT tools including remote desktop software, ticketing systems, and network monitoring tools.

• Remote desktop software (e.g. TeamViewer, AnyDesk)

• Ticketing systems (e.g. JIRA, ServiceNow)

• Network monitoring tools (e.g. PRTG, Nagios)

Yes, I manage voice calls with clients directly to provide technical support and troubleshoot issues.

• I have experience in handling voice calls with clients to understand their technical issues

• I provide step-by-step instructions over the phone to troubleshoot problems

• I use active listening skills to ensure clear communication with clients

• I document call details and resolutions for future reference

Yes, I know how to manage space on servers.

• Regularly monitor disk space usage on servers

• Delete unnecessary files and folders

• Implement disk quotas to limit space usage for users

• Archive or compress old data to free up space

• Consider adding more storage capacity if needed

Active Directory is a Microsoft service that manages network resources and user accounts.

• It is used to authenticate and authorize users and computers in a Windows domain network.

• It stores information about users, groups, computers, and other network objects.

• It allows administrators to manage network resources and apply policies to them.

• It provides a hierarchical structure for organizing network resources.

• Examples of network resources that can be managed with Active Directory ...read more

An IP address is a unique identifier for a device on a network, enabling communication between devices.

• Types of IP addresses include IPv4 and IPv6.

• IPv4 addresses are 32-bit numbers, e.g., 192.168.1.1.

• IPv6 addresses are 128-bit numbers, e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

• IP addresses can be static (fixed) or dynamic (assigned by DHCP).

• Public IP addresses are accessible over the internet, while private IP addresses are used within local networks.

SSD stands for Solid State Drive. It is a type of storage device that uses flash memory to store data.

• SSDs are faster and more reliable than traditional hard disk drives (HDDs).

• There are two main types of SSDs: SATA and NVMe.

• SATA SSDs are more affordable and have slower read/write speeds compared to NVMe SSDs.

• NVMe SSDs are faster and more expensive than SATA SSDs.

• SSDs are commonly used in laptops, desktops, and servers for faster boot times and improved performance.