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SQL commands like SELECT, INSERT, GRANT, and REVOKE manage data retrieval, insertion, and user permissions in databases.
SELECT: Retrieves data from one or more tables. Example: SELECT * FROM users;
INSERT: Adds new records to a table. Example: INSERT INTO users (name, age) VALUES ('Alice', 30);
GRANT: Provides specific privileges to users. Example: GRANT SELECT ON users TO user1;
REVOKE: Removes specific privileges f...
SQL basics include DDL for defining database structures and DML for manipulating data within those structures.
DDL (Data Definition Language) includes commands like CREATE, ALTER, and DROP to define and modify database structures.
Example of DDL: CREATE TABLE users (id INT PRIMARY KEY, name VARCHAR(100));
DML (Data Manipulation Language) includes commands like SELECT, INSERT, UPDATE, and DELETE to manage data within ...
Active Directory is a directory service developed by Microsoft for Windows domain networks, managing users and resources.
Centralized management of users, computers, and other resources in a network.
Supports authentication and authorization through protocols like Kerberos.
Organizes resources in a hierarchical structure using domains, trees, and forests.
Facilitates Group Policy for managing user and computer setting...
OraInventory is a crucial directory for Oracle software installations, tracking components and configurations.
Stores information about Oracle products installed on a system.
Maintains a list of installed Oracle software versions and their locations.
Facilitates the installation and uninstallation of Oracle products.
Example: oraInventory helps in managing multiple Oracle homes on a single server.
Contains logs and met...
The Oracle home directory is crucial for Oracle software installations and can be located using various methods.
Environment Variables: Check the 'ORACLE_HOME' environment variable, which typically points to the Oracle home directory. Example: echo $ORACLE_HOME in Unix/Linux.
Registry on Windows: On Windows systems, the Oracle home can be found in the registry under 'HKEY_LOCAL_MACHINE\SOFTWARE\Oracle'.
Oracle Univer...
Starting and stopping WebLogic Server involves using command-line scripts or the administration console for management.
Using Command-Line Scripts: Navigate to the domain's bin directory and use 'startWebLogic.sh' (Linux) or 'startWebLogic.cmd' (Windows) to start the server.
Stopping the Server: Use 'stopWebLogic.sh' (Linux) or 'stopWebLogic.cmd' (Windows) to gracefully shut down the server.
Admin Console: You can al...
Patching in middleware involves specific commands to apply updates and fixes to software components.
Use 'opatch' command for Oracle Middleware: Example - 'opatch apply' to apply patches.
For WebLogic Server, use 'wlst.sh' script: Example - 'java weblogic.WLST patching.py' to execute patching scripts.
In JBoss, use 'jboss-cli.sh': Example - ':patch apply --patch-file=your_patch.zip' to apply patches.
For IBM WebSphere...
Backup process involves planning, executing, and verifying data preservation for recovery in case of failure.
Identify critical data and systems to back up.
Choose backup type: full, incremental, or differential.
Select backup storage: local, cloud, or offsite.
Schedule regular backups to ensure data is up-to-date.
Test backup restoration process to ensure data integrity.
Check software patches using version commands and vendor documentation for patch cycles.
Use command-line tools like 'version' or 'show version' to check the current software version.
Refer to the vendor's official documentation or website for patch release notes.
Utilize package management tools (e.g., RPM, APT) to list installed patches.
Example: For Linux, use 'rpm -qa | grep <package_name>' to see installed ...
Fundamental Linux commands are essential for navigating and managing the Linux operating system effectively.
ls: Lists files and directories in the current directory. Example: 'ls -l' for detailed listing.
cd: Changes the current directory. Example: 'cd /home/user' to navigate to the user's home directory.
cp: Copies files or directories. Example: 'cp file.txt /backup/' to copy file.txt to the backup directory.
mv: Mo...
10 Java program given
Microservices with Kubernate deployment involves breaking down an application into smaller, independent services and deploying them using Kubernetes.
Microservices architecture involves breaking down a monolithic application into smaller, independent services that can be developed, deployed, and scaled independently.
Kubernetes is a container orchestration platform that automates the deployment, scaling, and management o...
I appeared for an interview before Mar 2024.
Patching in middleware involves specific commands to apply updates and fixes to software components.
Use 'opatch' command for Oracle Middleware: Example - 'opatch apply' to apply patches.
For WebLogic Server, use 'wlst.sh' script: Example - 'java weblogic.WLST patching.py' to execute patching scripts.
In JBoss, use 'jboss-cli.sh': Example - ':patch apply --patch-file=your_patch.zip' to apply patches.
For IBM WebSphere, use...
Upgrading the JDK involves downloading the latest version, uninstalling the old one, and configuring environment variables.
1. Check the current JDK version using 'java -version'.
2. Download the latest JDK from the official Oracle or OpenJDK website.
3. Uninstall the previous JDK version from your system.
4. Install the new JDK by following the installation wizard.
5. Update environment variables (JAVA_HOME and PATH) to po...
Starting and stopping WebLogic Server involves using command-line scripts or the administration console for management.
Using Command-Line Scripts: Navigate to the domain's bin directory and use 'startWebLogic.sh' (Linux) or 'startWebLogic.cmd' (Windows) to start the server.
Stopping the Server: Use 'stopWebLogic.sh' (Linux) or 'stopWebLogic.cmd' (Windows) to gracefully shut down the server.
Admin Console: You can also st...
The Oracle home directory is crucial for Oracle software installations and can be located using various methods.
Environment Variables: Check the 'ORACLE_HOME' environment variable, which typically points to the Oracle home directory. Example: echo $ORACLE_HOME in Unix/Linux.
Registry on Windows: On Windows systems, the Oracle home can be found in the registry under 'HKEY_LOCAL_MACHINE\SOFTWARE\Oracle'.
Oracle Universal I...
Backup process involves planning, executing, and verifying data preservation for recovery in case of failure.
Identify critical data and systems to back up.
Choose backup type: full, incremental, or differential.
Select backup storage: local, cloud, or offsite.
Schedule regular backups to ensure data is up-to-date.
Test backup restoration process to ensure data integrity.
Check software patches using version commands and vendor documentation for patch cycles.
Use command-line tools like 'version' or 'show version' to check the current software version.
Refer to the vendor's official documentation or website for patch release notes.
Utilize package management tools (e.g., RPM, APT) to list installed patches.
Example: For Linux, use 'rpm -qa | grep <package_name>' to see installed versi...
Fundamental Linux commands are essential for navigating and managing the Linux operating system effectively.
ls: Lists files and directories in the current directory. Example: 'ls -l' for detailed listing.
cd: Changes the current directory. Example: 'cd /home/user' to navigate to the user's home directory.
cp: Copies files or directories. Example: 'cp file.txt /backup/' to copy file.txt to the backup directory.
mv: Moves o...
OraInventory is a crucial directory for Oracle software installations, tracking components and configurations.
Stores information about Oracle products installed on a system.
Maintains a list of installed Oracle software versions and their locations.
Facilitates the installation and uninstallation of Oracle products.
Example: oraInventory helps in managing multiple Oracle homes on a single server.
Contains logs and metadata...
I applied via AmbitionBox and was interviewed in Apr 2024. There was 1 interview round.
Software installation involves downloading, running the installer, following prompts, and configuring settings.
Download the software from a trusted source
Run the installer file
Follow the installation prompts
Configure settings as needed
Restart the computer if required
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
Java 8 duplicate number, hashcode set map Collection core java
The boot process is the sequence of steps that a computer system goes through to start up and load the operating system.
BIOS or UEFI firmware is loaded first
Boot loader is loaded next to locate and load the operating system kernel
Kernel initializes hardware, mounts the root file system, and starts system services
Init process is started to bring the system to a usable state
Yes, I have knowledge of patching in Linux Server Administration.
Patching involves applying updates, fixes, and security patches to the Linux server system.
Regular patching helps in keeping the server secure and up-to-date.
Tools like yum, apt, and zypper are commonly used for patching in Linux servers.
Patching process may require server downtime or reboot to apply changes.
Automated patch management tools can streamline...
Links in Linux are text-based web browsers used to browse the internet in a terminal environment.
Links is a lightweight and fast web browser that runs in a terminal.
It allows users to browse the internet without a graphical interface.
Links supports HTML, CSS, and JavaScript to some extent.
It is commonly used on servers for text-based browsing or troubleshooting network connectivity.
I appeared for an interview in Dec 2024, where I was asked the following questions.
I applied via Recruitment Consulltant and was interviewed in Feb 2024. There were 2 interview rounds.
Asked various questions about problems while coding
Python coding test on bug bounty on
I applied via Company Website and was interviewed in Jul 2023. There were 3 interview rounds.
Verbal reasoning questions. ...
b) Verbal comprehension questions. ...
c) English language questions. ...
a) Questions testing abstract reasoning...
aptitude test is used to determine an individual's abilities, assessing how they are likely to perform in an area in which they have no prior training or knowledge.
Which festival is called the Festival of Colours? ... What is the Isosceles triangle? ... What type of gas is absorbed by plants? ... How many days a February month has in the leap year? ...
Utilize online resources, interactive platforms, and peer collaboration to enhance learning experience.
Utilize online courses and tutorials for self-paced learning
Engage in interactive platforms like online quizzes and simulations
Participate in study groups or peer collaboration for diverse perspectives
used to assess a candidate's ability to handle and interpret numerical data.
VLAN stands for Virtual Local Area Network, used to logically segment a network into multiple broadcast domains.
VLANs help improve network performance, security, and manageability by isolating traffic.
Each VLAN is a separate broadcast domain, allowing for better control over network traffic.
VLANs are configured at the switch level, with each port assigned to a specific VLAN.
For example, VLAN 10 could be for the finance...
OSPF (Open Shortest Path First) is a routing protocol used to find the best path for routing data packets in a network.
OSPF is a link-state routing protocol that uses Dijkstra's algorithm to calculate the shortest path to a destination.
It is used to determine the best path for routing data packets based on metrics like cost or bandwidth.
OSPF routers exchange link-state advertisements (LSAs) to build a topology map of t...
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The duration of Future Focus Infotech interview process can vary, but typically it takes about less than 2 weeks to complete.
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