70+ 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

To connect a network printer, change PC hardware, and create patch code color code, follow these steps.

• Connect the network printer to the network by assigning it a static IP address or using DHCP.

• Install the printer drivers on the PCs that need to access the printer.

• To change PC hardware, power off the PC, open the case, remove or replace the hardware component, and close the case.

• To create a patch code color code, use a color-coding system to identify different types of patc...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

Yes, I am familiar with the installation process of both Windows and Linux operating systems.

• For Windows, I am familiar with the installation process using a bootable USB or DVD, and can navigate through the installation wizard to configure settings such as language, time zone, and user accounts.

• For Linux, I have experience with various distributions such as Ubuntu, CentOS, and Debian, and can install them using a bootable USB or DVD, or through virtualization software such a...read more

Troubleshooting a network outage involves systematic checks to identify and resolve connectivity issues.

• Check physical connections: Ensure all cables are securely connected and devices are powered on.

• Verify network status: Use command line tools like 'ping' to check connectivity to the router and external sites.

• Inspect network devices: Check the status of switches, routers, and firewalls for any alerts or errors.

• Review network configuration: Ensure that IP addresses, subnet m...read more

A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• Firewalls can be hardware-based, software-based, or a combination of both.

• They act as a barrier between trusted internal networks and untrusted external networks, such as the internet.

• Firewalls filter traffic based on rules, allowing or blocking data packets based on IP addresses, protocols, and ports.

• For example, a firewall can block ...read more

The OSI model is a conceptual framework for understanding network communication across different systems.

• Layer 1: Physical - Deals with the physical connection (e.g., cables, switches).

• Layer 2: Data Link - Manages node-to-node data transfer (e.g., Ethernet).

• Layer 3: Network - Handles routing of data (e.g., IP addresses).

• Layer 4: Transport - Ensures complete data transfer (e.g., TCP, UDP).

• Layer 5: Session - Manages sessions between applications (e.g., APIs).

• Layer 6: Presentati...read more

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 prioritize, categorize, and communicate effectively to manage multiple IT tickets efficiently.

• Prioritize tickets based on urgency and impact, e.g., critical system outages take precedence over minor issues.

• Use a ticketing system to categorize and track progress, ensuring no ticket is overlooked.

• Set specific time blocks for addressing tickets, allowing for focused work without constant interruptions.

• Communicate with users to manage expectations, providing updates on ticket s...read more

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

A domain is a network of computers that are managed by a central authority. Joining a client to a domain involves configuring the client to communicate with the domain controller.

• A domain is a group of computers that share a common security and administration policy.

• To join a client to a domain, you need to have administrative privileges on both the client and the domain controller.

• The client needs to be configured to use the domain controller's DNS server for name resolution...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

SLA defines the minimum time to resolve tickets, ensuring timely support and service delivery in IT environments.

• Definition of SLA: Service Level Agreement (SLA) is a contract that outlines the expected service levels between a service provider and a client.

• Minimum Resolution Time: The minimum time to resolve tickets can vary based on the SLA; for example, critical issues may have a 1-hour resolution time.

• Priority Levels: SLAs often categorize tickets by priority (e.g., P1 fo...read more

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.

Active Directory Domain Services (AD DS) is a Microsoft technology for managing users, computers, and resources in a network.

• AD DS provides a centralized location for network management and security.

• It allows for the creation of user accounts and groups, enabling easier access control.

• AD DS uses a hierarchical structure, including domains, trees, and forests.

• Group Policy Objects (GPOs) can be applied to manage user and computer settings across the network.

• Example: An organiza...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

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

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.

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

I have over five years of experience managing IT infrastructure, supporting users, and ensuring system security and efficiency.

• Managed a network of over 200 devices, ensuring optimal performance and security.

• Implemented a new ticketing system that reduced response time by 30%.

• Conducted regular system audits and vulnerability assessments to enhance security.

• Provided training sessions for staff on new software and security protocols.