50+ IT Administrator Interview Questions and Answers

RDP, Samba, NFS, RAID, backup, recovery, Windows and Linux servers.

• RDP allows remote access to a computer's desktop.

• Samba is used for file and printer sharing between Linux and Windows systems.

• NFS is a file sharing protocol used in Unix/Linux systems.

• RAID is a data storage technology that combines multiple disks into a single logical unit.

• Backup and recovery are essential for data protection and disaster recovery.

• Windows and Linux servers require different configurations and ...read more

I would follow a troubleshooting process to identify the issue and seek assistance from colleagues or online resources if necessary.

• Check for any error messages or alerts

• Attempt to restart the system

• Research the issue online or consult documentation

• Seek assistance from colleagues or IT support

• If necessary, escalate the issue to higher-level support

Active Directory is a Microsoft service that manages network resources and user accounts. WLAN WAN is a wireless network technology. Router configuration involves setting up network settings and security protocols.

• Active Directory is used to authenticate and authorize users and computers in a network

• WLAN WAN is a wireless network that connects devices over a wide area network

• Router configuration involves accessing the router's web interface, setting up network settings such a...read more

PST and OST are file formats used by Microsoft Outlook to store email data. PST is a personal storage table and OST is an offline storage table.

• PST is used for storing email data on the local computer

• OST is used for storing email data when working in offline mode

• PST files can be imported and exported to transfer email data between computers

• OST files are automatically created when using Outlook in cached mode

• PST files have a maximum size limit of 50GB in Outlook 2010 and later...read more

Port numbers for common network protocols.

• FTP - Port 21

• SSH - Port 22

• SMTP - Port 25

• DNS - Port 53

• DHCP - Port 67/68

• HTTP - Port 80

• HTTPS - Port 443

• POP3 - Port 110

• IMAP - Port 143

Active Directory is a centralized database that stores information about network resources and enables users to access and manage them.

• Active Directory is a service provided by Microsoft for Windows domain networks.

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

• It allows administrators to manage and secure network resources, set policies, and deploy software.

• Active Directory uses a hierarchical structure with domains, trees, and forests to o...read more

To extract MAC address details of current and remote devices, use command line tools like ipconfig or ifconfig.

• Use ipconfig command in Windows to view MAC address details of current device

• Use ifconfig command in Linux to view MAC address details of current device

• For remote devices, use tools like Nmap to scan the network and retrieve MAC address details

Monitoring tools for customer service include Zendesk, Freshdesk, and Salesforce Service Cloud.

• Zendesk is a popular customer service software that offers ticketing, self-service options, and reporting capabilities.

• Freshdesk provides a helpdesk ticketing system, knowledge base, and automation tools for customer support.

• Salesforce Service Cloud is a customer service platform that integrates with Salesforce CRM to provide a complete view of customer interactions.

I have experience in configuring and installing new systems and managing server racks.

• I am familiar with various operating systems and can configure them according to the requirements.

• I have experience in setting up virtual machines and containers.

• I am proficient in managing server racks and ensuring proper cooling and power supply.

• I can troubleshoot hardware and software issues and perform regular maintenance tasks.

• I am familiar with network protocols and can configure firew...read more

I am from New York with 5 years of experience in IT administration, specializing in network security and system maintenance.

• From New York

• 5 years of experience in IT administration

• Specialize in network security and system maintenance

Yes, I am able to configure Microsoft Outlook.

• I am familiar with setting up email accounts in Outlook

• I can troubleshoot common issues with Outlook

• I am able to configure Outlook for use with Exchange servers

• I am knowledgeable about configuring Outlook for remote access

To create a rule in firewall, follow these steps:

• Open the firewall settings

• Click on 'Add Rule' or 'New Rule'

• Select the type of rule you want to create (inbound/outbound)

• Specify the protocol, port number, and IP address

• Choose the action to be taken (allow/block)

• Give a name to the rule and save it

A domain is a group of computers and devices that are interconnected and share a common set of rules and procedures.

• A domain is a logical grouping of network resources, such as computers, printers, and servers.

• It allows users to access resources and services on the network using a unique domain name.

• Domains are managed by domain controllers, which authenticate users and enforce security policies.

• Examples of domain names include microsoft.com, google.com, etc.

Yes, I am familiar with Admin Rights.

• Admin Rights refer to the level of access and control granted to an administrator on a computer system or network.

• Admin Rights allow an administrator to perform tasks such as installing software, changing system settings, and managing user accounts.

• Admin Rights should be granted only to trusted individuals to prevent unauthorized access or damage to the system.

• Examples of Admin Rights include Windows Administrator, Linux root user, and Act...read more

Yes, IT Audit is the process of evaluating an organization's IT infrastructure, policies, and operations to ensure they align with business goals.

• IT Audit involves reviewing security measures, data management practices, and compliance with regulations.

• It helps identify potential risks and vulnerabilities in the IT system and recommends solutions to mitigate them.

• Examples of IT Audit include network security assessments, vulnerability scans, and penetration testing.

• IT Audit is...read more

Yes, I am familiar with patch management.

• Patch management involves the process of identifying, acquiring, testing, and installing patches or updates to software applications and operating systems.

• It is important for maintaining the security and stability of IT systems.

• Patch management can be done manually or through automated tools.

• Examples of patch management tools include Microsoft SCCM, IBM BigFix, and SolarWinds Patch Manager.

Yes, I am familiar with user's rights.

• I understand the different levels of access and permissions that users may have.

• I am aware of the importance of protecting user data and privacy.

• I am knowledgeable about user authentication and authorization processes.

• I am familiar with industry standards and best practices for managing user rights.

Networking refers to the process of connecting two or more devices together to share resources and information.

• Networking involves the use of hardware and software to establish connections between devices.

• It allows for the sharing of resources such as printers, files, and internet access.

• Networking can be done through wired or wireless connections.

• Examples of networking technologies include Ethernet, Wi-Fi, and Bluetooth.

• Networking is essential for communication and collabora...read more

My IT strengths include strong troubleshooting skills and knowledge of various operating systems. My weakness is that I sometimes struggle with time management.

• Strong troubleshooting skills

• Knowledge of various operating systems

• Occasionally struggle with time management

Blue dump error is a Windows stop error that occurs when the system encounters a critical error and has to stop completely.

• Check for recently installed hardware or software that may be causing the issue

• Run a memory diagnostic test to check for any issues with RAM

• Update device drivers to ensure compatibility and stability

• Check for disk errors using CHKDSK command

• Restore system to a previous stable state using System Restore

I was responsible for managing IT systems, networks, and security protocols.

• Managed and maintained IT systems and networks

• Implemented and monitored security protocols

• Provided technical support to end users

• Performed regular system backups and updates

The FSMO (Flexible Single Master Operations) roles are specialized domain controller roles in Active Directory that manage specific operations.

• There are five FSMO roles: Schema Master, Domain Naming Master, RID Master, PDC Emulator, and Infrastructure Master.

• The Schema Master role manages modifications to the Active Directory schema.

• The Domain Naming Master role controls the addition or removal of domains in the forest.

• The RID Master role allocates unique security identifiers...read more

AD FSMO roles are the 5 special roles in Active Directory that are responsible for managing various aspects of the domain.

• There are 5 FSMO roles: Schema Master, Domain Naming Master, RID Master, PDC Emulator, and Infrastructure Master.

• Schema Master: responsible for making changes to the Active Directory schema.

• Domain Naming Master: responsible for adding or removing domains in the forest.

• RID Master: responsible for allocating RIDs (Relative Identifiers) to domain controllers....read more

M365 and O365 are both Microsoft productivity suites, but M365 includes Windows 10 and Enterprise Mobility + Security, while O365 does not.

• M365 includes Windows 10 and Enterprise Mobility + Security, while O365 does not

• M365 is a complete productivity suite for businesses, while O365 focuses on cloud-based productivity tools

• M365 offers additional security features and device management capabilities compared to O365

• Examples: M365 includes Microsoft Teams, Windows Defender, and ...read more

Server 2016 has improved security, virtualization, and cloud integration compared to Server 2012.

• Server 2016 has improved security features such as Credential Guard and Device Guard

• Server 2016 has enhanced virtualization capabilities with nested virtualization and shielded VMs

• Server 2016 has better cloud integration with Azure and improved storage features

• Server 2016 has a smaller installation footprint compared to Server 2012

• Server 2016 has a new Nano Server deployment optio...read more

I have worked in various environments including corporate offices, data centers, and remote locations.

• Corporate office: Managed IT infrastructure for a large multinational company, ensuring smooth operations and resolving technical issues.

• Data center: Oversaw the installation and maintenance of servers, storage systems, and networking equipment.

• Remote locations: Supported remote teams by setting up secure VPN connections, troubleshooting connectivity issues, and providing rem...read more

IP Classes are a way of categorizing IP addresses based on their network and host portions.

• There are five classes of IP addresses: A, B, C, D, and E.

• Classes A, B, and C are used for public IP addresses, while classes D and E are reserved for special purposes.

• The class of an IP address determines the range of values that can be used for the network and host portions.

• Class A addresses have a range of 1-126 for the first octet, while class B addresses have a range of 128-191.

• Cla...read more

The latest Mac OS is macOS Big Sur.

• macOS Big Sur is the 17th major release of macOS.

• It was announced at WWDC 2020 and released in November 2020.

• Some of the key features include a redesigned user interface, Control Center, and improved Safari browser.

Classes of IP addresses are categorized into Class A, B, and C with specific ranges.

• Class A: 1.0.0.0 to 126.255.255.255

• Class B: 128.0.0.0 to 191.255.255.255

• Class C: 192.0.0.0 to 223.255.255.255

DNS, DHCP, LAN, and WAN are all networking terms used in IT administration.

• DNS (Domain Name System) is used to translate domain names to IP addresses.

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

• LAN (Local Area Network) is a network that connects devices in a limited area, like a home or office.

• WAN (Wide Area Network) is a network that connects devices over a larger geographical area, like multiple offices or cities.

There are various types of operating systems and router configurations available.

• Types of operating systems include Windows, macOS, Linux, and Unix.

• Router configurations involve setting up network protocols, security settings, and port forwarding.

• Some popular router brands include Cisco, Netgear, and TP-Link.

Group policy is a feature in Windows operating systems that allows administrators to manage users and computers in an organization.

• Group policy settings are used to enforce security settings, deploy software, and manage user configurations.

• Group policies are created and managed using the Group Policy Management Console (GPMC).

• Examples of group policy settings include password policies, software installation rules, and desktop configurations.

To troubleshoot PC hardware, start by checking connections, running diagnostics, updating drivers, and testing components.

• Check all connections to ensure everything is properly plugged in

• Run hardware diagnostics to identify any issues

• Update drivers for hardware components

• Test individual hardware components like RAM, hard drive, and graphics card

• Check for any physical damage or signs of wear and tear

Configuring and managing a mail server involves setting up email accounts, security measures, and monitoring performance.

• Choose a mail server software such as Microsoft Exchange or Postfix

• Configure the server settings including domain name, IP address, and port numbers

• Create email accounts and set up security measures such as spam filters and antivirus software

• Monitor server performance and troubleshoot issues as they arise

• Regularly update software and security patches to ens...read more

A VPN (Virtual Private Network) is a secure network connection that allows users to access the internet privately and securely.

• Encrypts data to ensure privacy and security

• Masks user's IP address to hide their location

• Allows users to access restricted content or bypass censorship

• Commonly used for remote work or accessing company networks

• Examples: NordVPN, ExpressVPN, Cisco AnyConnect

DHCP stands for Dynamic Host Configuration Protocol.

• DHCP is a network protocol that automatically assigns IP addresses to devices on a network.

• It helps in reducing the manual configuration of IP addresses.

• DHCP servers lease IP addresses to devices for a specific period of time.

• Example: When a new device connects to a network, DHCP assigns it an IP address from a pool of available addresses.

To create a system image server, follow these steps:

• Choose a server with enough storage capacity

• Install a server operating system

• Install backup software such as Acronis or Clonezilla

• Configure the backup software to create system images

• Set up a schedule for regular backups

• Test the system image server by restoring a system image

NO

A computer is an electronic device that can perform various tasks by executing instructions given to it. A system is a collection of hardware, software, and data that work together to perform a specific task.

• A computer is made up of hardware components such as the CPU, memory, and storage devices.

• Software programs are installed on a computer to perform specific tasks.

• A system can refer to a computer system, an operating system, or a software system.

• Examples of computer system...read more

Mundane tasks are routine, repetitive tasks that are necessary but not particularly challenging or stimulating.

• Mundane tasks are often administrative in nature, such as data entry, filing, or organizing documents.

• They can also include basic troubleshooting or maintenance tasks, like updating software or resetting passwords.

• While mundane tasks may not be exciting, they are essential for the smooth operation of IT systems and infrastructure.

To resolve WiFi issues, troubleshoot the connection, check settings, reset the router, update drivers, and contact ISP if needed.

• Troubleshoot the WiFi connection by restarting the device and router

• Check WiFi settings to ensure correct network is selected and password is entered correctly

• Reset the router by unplugging it for a few minutes and then plugging it back in

• Update WiFi drivers on the device to ensure compatibility and performance

• Contact Internet Service Provider (ISP)...read more

Troubleshooting software involves identifying and resolving issues that prevent the software from functioning correctly.

• Identify the problem by gathering information from users or error messages

• Check for software updates or patches that may fix the issue

• Verify system requirements and compatibility with the software

• Reinstall the software if necessary

• Use diagnostic tools to pinpoint the issue

A load balancer is a device or software that distributes network traffic across multiple servers to optimize performance and prevent overload.

• Load balancers improve scalability and availability of applications.

• They distribute incoming requests evenly among servers.

• Load balancers can perform health checks to ensure servers are functioning properly.

• They can handle different types of traffic, such as HTTP, TCP, or UDP.

• Examples of load balancers include NGINX, F5 BIG-IP, and Amaz...read more

Comparison between o365 licences

• Different o365 licenses offer different features and capabilities

• Licenses vary in terms of pricing and subscription options

• Some licenses include additional services like Exchange Online, SharePoint Online, and Teams

• Higher-tier licenses may provide advanced security and compliance features

• Licenses can be tailored to specific user roles and needs

A system is a set of interconnected components that work together to achieve a common goal. A computer is an electronic device that can perform various tasks by executing instructions.

• A system can be physical or abstract

• A computer is a type of system that consists of hardware and software components

• Examples of systems include transportation systems, communication systems, and information systems

• Examples of computers include desktops, laptops, tablets, and smartphones

Windows server troubleshooting issues

• Identify and resolve network connectivity problems

• Troubleshoot server performance issues

• Resolve software installation and configuration problems

• Investigate and fix server hardware failures

• Address security vulnerabilities and apply patches

• Diagnose and resolve Active Directory issues

PRI stands for Primary Rate Interface, a type of ISDN line used for connecting to the public switched telephone network.

• PRI is a type of digital telecommunication service used in ISDN networks.

• It consists of 23 B channels for data and 1 D channel for signaling.

• PRI is commonly used for connecting PBX systems to the public telephone network.

• It allows for multiple simultaneous voice or data channels over a single line.