10+ Senior Infrastructure Engineer Interview Questions and Answers

The 2 default records in DNS are A record and NS record.

• A record (Address record) maps a domain name to an IP address

• NS record (Name Server record) specifies the authoritative name servers for the domain

I regularly scan systems for vulnerabilities, prioritize based on severity, patch or mitigate as needed, and monitor for any new vulnerabilities.

• Regularly scan systems for vulnerabilities using tools like Nessus or Qualys

• Prioritize vulnerabilities based on severity levels (e.g. critical, high, medium, low)

• Patch or mitigate vulnerabilities by applying security updates or implementing security controls

• Monitor for any new vulnerabilities and repeat the process regularly

• Educate t...read more

Use remote access tools like SSH or RDP to connect to the server without physical access.

• Use SSH (Secure Shell) for connecting to Linux servers remotely.

• Use RDP (Remote Desktop Protocol) for connecting to Windows servers remotely.

• Set up VPN (Virtual Private Network) for secure remote access.

• Utilize tools like TeamViewer or AnyDesk for remote desktop access.

• Ensure proper security measures like strong passwords and two-factor authentication.

When a user opens a browser and types in a URL and hits enter, the browser sends a request to the server hosting the website specified in the URL.

• Browser resolves the domain name to an IP address using DNS

• Browser sends a request to the server at that IP address

• Server processes the request and sends back the webpage content

• Browser renders the webpage for the user to view

Yes, I can write a PowerShell script to move users from an Excel file to an AD group.

• Read the Excel file using Import-Excel module

• Iterate through the list of users and add them to the AD group using Add-ADGroupMember cmdlet

To login to an ESXi host during lockout, use the DCUI or SSH.

• Use the Direct Console User Interface (DCUI) to login during lockout.

• Alternatively, enable SSH access and login remotely using an SSH client.

• Resetting the root password may also be necessary in some cases.

VMDX is a virtual disk descriptor file used in VMware virtualization technology. OCS stands for Office Communications Server.

• VMDX is a file format used to describe virtual disks in VMware virtualization technology

• It contains metadata about the virtual disk, such as size, type, and location

• OCS (Office Communications Server) is a deprecated Microsoft software product for unified communications

• It provided instant messaging, VoIP, video conferencing, and presence information

Profile group in HA refers to a collection of profiles that are grouped together for high availability purposes.

• Profile group ensures that multiple profiles are active and available for redundancy in case of failure

• Profiles within a group can be configured to failover to another node in the cluster

• Helps in ensuring continuous availability of services by distributing workload across multiple profiles

Default FT (Fault Tolerance) is not allowed on ESXi host

• Default FT is not allowed on ESXi host due to licensing restrictions

• FT feature needs to be enabled and configured separately

• FT is only available in VMware vSphere Enterprise Plus edition

A microservice architecture is a design approach where a single application is composed of small, independent services that communicate over well-defined APIs.

• Break down the application into smaller, loosely coupled services

• Each service should have a specific function or capability

• Services communicate through APIs, often using lightweight protocols like HTTP or messaging queues

• Each service should be independently deployable and scalable

• Use containers like Docker for packaging...read more