20+ IT Helpdesk Engineer Interview Questions and Answers

IT Helpdesk Engineer interview questions

• Http port no is 80 and https port no is 443

• Domain is a group of computers that share a common security and naming structure, ADDS is Active Directory Domain Services

• MFA is Multi-Factor Authentication

• DNS is Domain Name System and DHCP is Dynamic Host Configuration Protocol

• Active Directory is a directory service that stores information about objects on a network

• Group Policy is a feature of Active Directory that allows administrators to ma...read more

Cybersecurity is essential to protect sensitive data, prevent cyber attacks, ensure privacy, and maintain trust in digital systems.

• Prevents unauthorized access to sensitive data

• Protects against cyber attacks such as malware, ransomware, and phishing

• Ensures privacy of personal and confidential information

• Maintains trust in digital systems and online transactions

• Helps organizations comply with regulations and standards like GDPR and HIPAA

To troubleshoot Outlook issues, check for connectivity, repair the application, and recreate the profile.

• Check internet connectivity and server status

• Repair the Outlook application using the built-in repair tool

• Recreate the Outlook profile

• Disable add-ins and antivirus software temporarily

• Check for any recent updates or changes made to the system

• Clear the Outlook cache

• Check for any conflicting software or applications

• Contact IT support if issue persists

A domain is a group of computers and devices on a network that are administered as a unit with common rules and procedures.

• Domains are used to manage and organize network resources.

• They provide centralized authentication and authorization for users and computers.

• Domains use a hierarchical naming structure called the Domain Name System (DNS) to identify and locate resources on the network.

• Active Directory is a popular domain-based directory service used in Windows environments...read more

Dashboard, camera configuration, and SLA are all important aspects of IT Helpdesk Engineer role.

• Dashboard helps in monitoring the system performance and identifying issues.

• Camera configuration involves setting up and troubleshooting video conferencing equipment.

• SLA (Service Level Agreement) defines the level of service expected by the customer and helps in prioritizing and resolving issues.

TCP/IP stands for Transmission Control Protocol/Internet Protocol. It is a set of rules governing the exchange of data over the internet.

• TCP/IP is a suite of communication protocols used to connect devices on the internet.

• It provides end-to-end data communication specifying how data should be packetized, addressed, transmitted, routed, and received.

• TCP ensures that data is reliably transmitted between devices, while IP is responsible for addressing and routing packets.

• Example...read more

Yes, I am familiar with configuring Office 365.

• I have experience setting up user accounts, groups, and permissions in Office 365.

• I can configure email accounts, distribution lists, and shared mailboxes.

• I am proficient in setting up and managing SharePoint sites and OneDrive for Business.

• I am familiar with configuring security settings and compliance features in Office 365.

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

• DNS is like a phonebook for the internet

• It helps to locate websites by translating domain names into IP addresses

• DNS works by using a hierarchical system of servers

• There are different types of DNS records such as A, CNAME, MX, etc.

• DNS can also be used for load balancing and failover

Network topology refers to the layout of a network and how different nodes are connected.

• Types include star, bus, ring, mesh, and hybrid topologies

• Star topology has a central hub with nodes connected to it

• Bus topology uses a single cable that all nodes connect to

• Ring topology connects nodes in a circular fashion

• Mesh topology has every node connected to every other node

• Hybrid topology is a combination of two or more different topologies

Submitting documents in an online portal

• Ensure all required documents are scanned or saved in a digital format

• Login to the online portal using your credentials

• Locate the section or tab for document submission

• Click on the 'Upload' or 'Choose File' button

• Select the documents you want to submit from your computer

• Click on the 'Submit' or 'Upload' button to complete the process

• Verify that the documents have been successfully uploaded and submitted

Ping command is used to test the reachability of a host on an IP network.

• Ping command sends ICMP echo request packets to the target host

• It waits for ICMP echo reply packets to confirm the host's availability

• Ping command helps in troubleshooting network connectivity issues

• It can also be used to measure round-trip time between the source and target host

DHCP is a network protocol that assigns IP addresses automatically, while TCP/IP is a set of protocols used for communication over the internet.

• DHCP stands for Dynamic Host Configuration Protocol

• DHCP automatically assigns IP addresses to devices on a network

• TCP/IP is a set of protocols used for communication over the internet

• TCP/IP includes protocols like TCP (Transmission Control Protocol) and IP (Internet Protocol)

IPv4 uses 32-bit addresses while IPv6 uses 128-bit addresses.

• IPv4 addresses are written in decimal format (e.g. 192.168.1.1) while IPv6 addresses are written in hexadecimal format (e.g. 2001:0db8:85a3:0000:0000:8a2e:0370:7334).

• IPv4 supports around 4.3 billion unique addresses while IPv6 supports an astronomical number of unique addresses.

• IPv4 has a header length of 20 bytes while IPv6 has a fixed header length of 40 bytes.

• IPv4 uses ARP (Address Resolution Protocol) for mappin...read more

A domain is a unique name that identifies a website on the internet.

• A domain consists of a top-level domain (TLD) like .com, .org, or .net, and a second-level domain like google or amazon.

• Domains are used to easily navigate to websites without needing to remember IP addresses.

• Domains are registered through domain registrars like GoDaddy or Namecheap.

• Example: The domain www.google.com consists of the second-level domain 'google' and the top-level domain '.com'.

Current CTC refers to the current salary package or compensation that the candidate is receiving in their current job.

• Current CTC is the total amount of money an employee is paid by their employer, including base salary, bonuses, and other benefits.

• It is important for employers to know the candidate's Current CTC to determine if they can offer a competitive salary package.

• Candidates should be honest about their Current CTC during interviews to avoid any discrepancies later on...read more

Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks.

• AD is used to store information about objects on a network, such as computers, users, and groups.

• It allows administrators to manage and secure resources within a network.

• AD uses a hierarchical structure with domains, trees, and forests to organize objects.

• Examples: Creating user accounts, managing group policies, authenticating users for network access.

The operating system (OS) is the software that manages computer hardware resources and provides common services for computer programs.

• OS acts as an intermediary between the hardware and software of a computer system

• Examples of popular operating systems include Windows, macOS, and Linux

• OS controls the allocation of memory, processes, and input/output devices

A switch is a networking device that connects devices on a computer network by using packet switching to forward data to the appropriate destination.

• A switch operates at the data link layer of the OSI model

• It uses MAC addresses to forward data within the network

• Switches are more efficient than hubs as they only send data to the intended recipient

• Examples of switches include Cisco Catalyst series, Netgear ProSAFE switches

HDCP (High-bandwidth Digital Content Protection) is a form of digital copy protection that prevents unauthorized duplication of content.

• Ensure that both the source device (e.g. Blu-ray player) and the display device (e.g. TV) support HDCP.

• Use HDMI cables that are HDCP compliant.

• Check the settings on both devices to enable HDCP if necessary.

• If HDCP errors occur, try power cycling both devices and ensuring all connections are secure.

• Update firmware on devices if needed to resol...read more

A LAN network is a local area network that connects computers and devices within a limited area such as a home, office, or school.

• LAN networks are typically used for sharing resources like printers, files, and internet connections within a small area.

• LAN networks are usually faster and more secure than wide area networks (WANs).

• Examples of LAN network technologies include Ethernet, Wi-Fi, and Token Ring.

Check power source, battery, connections, and hardware issues

• Check if the laptop is plugged in and the power source is working

• Try a different power outlet or power cable

• Remove the battery and try powering on with just the AC adapter

• Check for loose connections or damaged power button

• Test with a different charger or battery if possible

I receive requests through email, phone calls, and in-person visits.

• Monitor email inbox for new tickets

• Answer phone calls from users seeking assistance

• Assist users who come to the helpdesk in person

• Use ticketing system to track and prioritize requests

HDD is a traditional storage device that uses spinning disks to store data, while SSD is a newer technology that uses flash memory.

• HDD is slower than SSD due to its mechanical nature

• SSD has no moving parts, making it more durable and reliable

• SSD consumes less power than HDD

• SSD is more expensive than HDD

• HDD has larger storage capacity than SSD