Head Field Solutions System Administrator Interview Questions and Answers

Q1. What are the uses of profiles and permission sets in Salesforce?
Ans. 
Profiles and permission sets in Salesforce control user access and permissions for data and functionality.
• Profiles define the baseline permissions for users, including object access, field permissions, and app visibility.

• Permission sets are additional access levels that can be assigned to users on top of their profiles, allowing for more granular control.

• For example, a user with a standard profile can be granted access...read more
Answered by AI
Add your answer
Q2. What coding languages are used in Salesforce?
Ans. 
Salesforce uses various coding languages, primarily Apex, Visualforce, and Lightning components for development.
• Apex: A strongly typed, object-oriented programming language similar to Java, used for server-side logic.

• Visualforce: A markup language for building custom user interfaces in Salesforce, akin to HTML.

• Lightning Components: A framework for developing dynamic web apps for mobile and desktop, using JavaScript and...read more
Answered by AI
Add your answer

Q1. Questions related to the technology stack you have added
Add your answer

Q1. How to dics scan, create LVM
Ans. 
To disk scan, use tools like fsck or badblocks. To create LVM, use pvcreate, vgcreate, and lvcreate commands.
• To disk scan, use fsck command to check and repair file system errors.

• To scan for bad blocks on a disk, use badblocks command.

• To create LVM, first initialize physical volumes (pvcreate), then create volume groups (vgcreate), and finally create logical volumes (lvcreate).

• Example: fsck /dev/sda1

• Example: badblocks ...read more
Answered by AI
Add your answer
Q2. Server is behaving Slow, How can i Troubleshoot This.
Ans. 
To troubleshoot a slow server, analyze performance metrics, check resource usage, and identify bottlenecks.
• Check CPU usage: Use tools like 'top' or 'htop' to identify processes consuming high CPU.

• Monitor memory usage: Use 'free -m' or 'vmstat' to check for memory exhaustion or swapping.

• Inspect disk I/O: Use 'iostat' or 'df -h' to check for disk space issues or high I/O wait times.

• Review network performance: Use 'ping' ...read more
Answered by AI
Add your answer
Q3. User is not able to login, How can troubleshoot this
Ans. 
To troubleshoot a user not able to login, check for account lockouts, password issues, network connectivity, and system errors.
• Check if the user's account is locked or disabled

• Verify if the user's password has expired or needs to be reset

• Ensure network connectivity is working properly

• Check for any system errors or issues that may prevent login

• Review system logs for any relevant error messages

• Confirm if the user is usin...read more
Answered by AI
Add your answer
Q4. How to create bonding in linux
Ans. 
Bonding in Linux is a technique to combine multiple network interfaces into a single virtual interface for increased bandwidth and fault tolerance.
• Install the bonding driver module

• Configure the bonding interface in the network configuration file

• Specify the bonding mode and options

• Assign the physical interfaces to the bonding interface

• Restart the network service to apply the changes
Answered by AI
Add your answer
Q5. Disc LVM partion for LVM
Ans. 
Disc LVM partitioning allows for flexible management of storage space by creating logical volumes on physical disks.
• LVM stands for Logical Volume Manager.

• It allows for dynamic allocation and resizing of storage space.

• LVM partitions are created by combining physical volumes (disks) into volume groups, and then creating logical volumes within those groups.

• Logical volumes can be resized, moved, or even span multiple physi...read more
Answered by AI
Add your answer
Q6. How to run Cronjob for Process
Ans. 
To run a cronjob for a process, use the crontab command to create a cron job entry.
• Use the crontab command to edit the cron table

• Specify the schedule using the cron syntax

• Specify the command or script to be executed

• Save and exit the cron table to schedule the cron job
Answered by AI
Add your answer
Q7. File sharing with nfs, step to step process, how to mount on server
Ans. 
NFS allows file sharing across networks. Here's how to set it up and mount on a server.
• Install NFS server: Use 'sudo apt install nfs-kernel-server' on Ubuntu.

• Configure exports: Edit '/etc/exports' to define shared directories, e.g., '/srv/nfs *(rw,sync,no_subtree_check)'.

• Start NFS service: Run 'sudo systemctl start nfs-kernel-server' to start the service.

• Enable NFS on boot: Use 'sudo systemctl enable nfs-kernel-server'...read more
Answered by AI
Add your answer
Q8. Patching Process in your current Organization
Add your answer
Q9. How to rollback Patches trough Yum
Ans. 
To rollback patches through Yum, use the yum history command and the yum history undo command.
• Use the 'yum history' command to view the history of installed packages and patches.

• Identify the transaction ID of the patch you want to rollback.

• Use the 'yum history undo ' command to rollback the patch.

• Confirm the rollback by reviewing the output and checking the system's package status.
Answered by AI
Add your answer
Q10. Server is not able to login, how to troubleshoot this
Ans. 
To troubleshoot a server not able to login, check network connectivity, verify credentials, and review system logs.
• Check network connectivity to ensure the server is reachable

• Verify the correctness of login credentials

• Review system logs for any error messages or indications of login failures

• Restart the server if necessary

• Check for any recent system updates or changes that may have caused the login issue
Answered by AI
Add your answer
Q11. Create swap for linux server
Ans. 
To create swap for a Linux server, use the 'mkswap' command to create a swap file or partition and then activate it using the 'swapon' command.
• Use 'dd' command to create a swap file with desired size: 'dd if=/dev/zero of=/path/to/swapfile bs=1G count=4'

• Set the correct permissions for the swap file: 'chmod 600 /path/to/swapfile'

• Create swap space on the file: 'mkswap /path/to/swapfile'

• Activate the swap space: 'swapon /pa...read more
Answered by AI
Add your answer
Q12. How to take backup via tar utility
Ans. 
Tar utility is used to create backups by compressing files and directories.
• To create a backup using tar, use the 'tar' command followed by the appropriate options and arguments.

• Specify the files or directories to be included in the backup.

• Use the '-cvf' options to create a new tar archive file.

• Specify the name of the archive file to be created.

• To compress the backup, use the '-z' option for gzip compression or '-j' opt...read more
Answered by AI
Add your answer
Q13. You know scp what is use for linux.
Ans. 
scp is a command-line tool used for securely transferring files between a local and remote Linux system.
• scp stands for secure copy.

• It uses SSH protocol for secure file transfer.

• It can be used to copy files between local and remote systems, or between two remote systems.

• Syntax: scp [options] [source] [destination]

• Example: scp file.txt user@remote:/path/to/destination
Answered by AI
Add your answer
Q14. Difference between yum & rpm.
Add your answer
Q15. Https is not working, how to troubleshoot this.
Ans. 
To troubleshoot HTTPS not working, check certificate validity, firewall settings, and web server configuration.
• Check if the SSL/TLS certificate is valid and properly installed

• Verify if the web server is configured to listen on the correct HTTPS port (usually 443)

• Ensure that the firewall allows incoming connections on the HTTPS port

• Check if the SSL/TLS protocols and cipher suites are correctly configured

• Inspect the web ...read more
Answered by AI
Add your answer
Q16. You know about port , ssh, http, https, ftp, nfs, telnet , samba,
Ans. 
These are common network protocols used for communication and file transfer.
• SSH (Secure Shell) is a secure protocol used for remote login and secure file transfer.

• HTTP (Hypertext Transfer Protocol) is used for transmitting web pages and other resources over the internet.

• HTTPS (HTTP Secure) is the secure version of HTTP, encrypted with SSL/TLS.

• FTP (File Transfer Protocol) is used for transferring files between a client ...read more
Answered by AI
Add your answer
Q17. Difference between udp & tcp
Ans. 
UDP is a connectionless protocol that provides fast, but unreliable communication. TCP is a connection-oriented protocol that ensures reliable communication.
• UDP stands for User Datagram Protocol, while TCP stands for Transmission Control Protocol.

• UDP is faster than TCP because it does not establish a connection before sending data.

• UDP does not guarantee delivery of packets, while TCP ensures reliable delivery.

• TCP uses ...read more
Answered by AI
Add your answer
Q18. Network layers for network
Ans. 
The network layers for network are a hierarchical structure that defines the communication process between devices.
• The network layers are a way to organize and standardize the communication process in a network.

• There are several models that define the network layers, such as the OSI model and the TCP/IP model.

• Each layer has a specific function and interacts with the layers above and below it.

• The layers provide abstract...read more
Answered by AI
Add your answer
Q19. You are not able to login through putty, troubleshooting
Ans. 
Troubleshooting steps for not being able to login through putty
• Check network connectivity

• Verify correct IP address and port number

• Ensure SSH service is running on the server

• Check firewall settings

• Verify correct username and password

• Check if the server is reachable and not down
Answered by AI
Add your answer
Q20. You know about scripting , bash or sh
Ans. 
Yes, I am familiar with scripting in bash and sh.
• I have experience writing scripts in bash and sh.

• I am comfortable with using variables, loops, conditionals, and functions in bash and sh scripts.

• I have used bash and sh scripts for automating tasks, managing system configurations, and troubleshooting.

• I am familiar with common commands and utilities in bash and sh, such as grep, sed, awk, and find.

• I have written scripts ...read more
Answered by AI
Add your answer

Java 8 programs, string buffer and builder

About traffic in Banglore and the project

Confidence is. The key. The questions are medium too tough

Q1. Arrays and all exceptions within coding
Ans. 
Arrays are data structures used to store a collection of elements. Exceptions are errors that occur during program execution.
• Arrays can be one-dimensional or multi-dimensional

• Arrays can be of primitive data types or objects

• Exceptions can be handled using try-catch blocks

• Common exceptions include NullPointerException and ArrayIndexOutOfBoundsException
Answered by AI
Add your answer
Q2. SQL joins and aggregations and window function
Add your answer

About yourself, experience

Q1. Software used, inventory
Add your answer

Merge Sort, FIFO based question

An App was given to design in given tim eframe