SAINADH

+ Databricks is an integrated platform for data and AI that enables large-scale development, deployment, and management of data, analytics, and AI-driven solutions. + Founded in 2013 at  University of California, Berkeley + Mission: democratize data and AI + 2020- Introduced Lakehouse + 2023- Rise of GenAI (Data +AI)  Some Basic Terms: Data Warehouse:  Storage of Structured data for BI & reporting Data Lakes:  Storage of structured, semi & unstructured data used for almost all type of data suitable                               for DS,ML we can't use both by connecting each other i.e; as both storage systems with same data to be ingested. People are copying the data to use for each application as for each  system the data governance and security rules are different Data Lakehouse:  (Data Warehouse + Data Lake) one platform to unify all data, analytics and AI wo...

  The TCP (Transmission Control Protocol- connection oriented) handshake is a three-step process used to establish a connection between a client and a server in a TCP/IP network. Three- Way Handshake Process: SYN (Synchronize): The client initiates the connection with the server by sending SYN Packet SYN-ACK (Synchronize-Acknowledge):  The server responds with a ACK packet and sends it's own SYN packet to client ACK (Acknowledge): The client responds with ACK packet to server, resulting the connection is established Fig: TCP 3-way Handshake Process  Here I opened the browser and searched www.google.com, the respective TCP connection is highlighted here SYN Packet Analysis: Packet from Client to Server. Covering major fields to be checked here. Note: All the fields here related to Client Machine Fig: SYN packet analysis Destination port: Client requesting https (443) services from the server TCP Segment Length: Payload of the packet. In the all 3 -way handshake proces...

Recently, I encountered an Issue of "Unable to access the PaloAlto VM image via HTTPS". Here's how I applied troubleshooting steps to resolve it: Configuration Changes done before: Configured static management IP & default gateway and rebooted the PA VM, then faced the issue. Observed: Unable to access the PaloAlto VM image via HTTPS. Unable to ping to the default Gateway from the PA and viceversa. Error- getting Destination Host Unreachable in both cases. Analyzed: + Checked the Management IP address and netmask, both are same as bridged network (physical) + Checked the default route "show routing route" - no route configured + While pinging from the base machine to PA and vice versa getting error as "Destination is Unreachable". Hypothesized: + As per the Error message, primarily issue is Network related, that the PA VM is unable to reach physical NIC IP. Tested: + Tried with changing the management IP address within the same subnet (as physic...

  Today, I have successfully remedied the "Download issue encountered on a particular website." Observed: User can able to access the website without any issues, unable to download the file from the website. Multiple users in different locations are facing the same issue. Analysed: + As per the basic troubleshooting cleared the cache, close the browser then again tried to download the file, but still issue persists. + Checked the logs in Firewall and Web (Zscaler) side as well. No logs in firewall, Zscaler logs are allowed for the particular URL. + From the website owner everything is working fine with the same credentials and also can able to download while using outside of the organization network. Hypothesized: + As per the all analysis and effect on the multiple users, confirmed the issue might be resides in Proxy/Firewall or from the web server due to lack of proper permissions to access the file from organization network. Tested: + Checked the Test-NetConnection from th...