Ericsson Interview Questions, Process, and Tips

Basic aptitude ques were asked

Q1. Projects discussion
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Q2. Probability questions
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Q1. Why Ericsson and 5 year plan
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Q2. Your strength and weakness
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Q1. Write program to print series
Ans. 
Program to print series of numbers or characters
• Use a loop to iterate through the series

• Print each element of the series in the loop

• Consider using different types of loops like for loop or while loop

• For example, to print numbers from 1 to 10: for(int i=1; i<=10; i++) { System.out.println(i); }
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Q2. Sql join questions,, simple
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Q1. What is sdn and pod creation process
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SDN stands for Software-Defined Networking, which is a network architecture that allows for programmable network management. The process of creating a pod involves defining a group of one or more containers that share storage, network, and configuration.
• SDN allows for centralized control of network traffic and enables dynamic, automated network configuration.

• Pod creation process involves defining a pod specification in...read more
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Q2. Anti-affinity and affinity
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Good questions based on coding and aptitude

Q1. Easy questions based on CS basics and projects
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Q1. Did not pass to reach this round
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Q1. This was Tech 1 round, linux basic commands were asked. Below are some of the topics- monitoring disk utilization File system creation User management Ownership and permissions
Ans. It was an easy round for me, if you are working as linux admin you can easily go through that. Monitoring - top, sar Disk utilization - du
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Q2. Define the steps of File system creation.
Ans. 
Steps for file system creation involve partitioning, formatting, and mounting the file system.
• Partition the disk using tools like fdisk or parted

• Format the partition with a file system like ext4 or xfs

• Create a mount point directory

• Mount the file system to the mount point

• Update /etc/fstab to automatically mount the file system on boot
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Q3. Why tcpdump is used?
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tcpdump is used for network troubleshooting and analysis by capturing and analyzing network packets.
• Captures network packets for analysis

• Helps in troubleshooting network issues

• Can be used to monitor network traffic

• Provides detailed information about network communication

• Useful for security analysis and monitoring
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Q4. How we can transfer file from one server to other server?
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Files can be transferred from one server to another using tools like SCP, SFTP, or rsync.
• Use SCP (Secure Copy Protocol) to securely transfer files between servers. Example: scp file.txt user@server2:/path/to/directory

• Use SFTP (SSH File Transfer Protocol) for interactive file transfers. Example: sftp user@server2

• Use rsync for efficient synchronization of files between servers. Example: rsync -avz file.txt user@server2:/
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Q5. How you can schedule a job regularly?
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You can schedule a job regularly using cron jobs in Linux.
• Use the crontab command to edit the cron table

• Specify the schedule using the appropriate syntax (minute, hour, day of month, month, day of week)

• For example, to schedule a job to run every day at 3am, you would add the following line to the cron table: 0 3 * * * /path/to/command
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Q6. What is Hard link and soft link?
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Hard links and soft links are two types of links used in Unix-like operating systems to create shortcuts to files.
• Hard links are direct pointers to the inode of a file, while soft links are indirect pointers to the file name.

• Hard links cannot link directories or files on different filesystems, while soft links can.

• If the original file is deleted, hard links will still point to the data, while soft links will be broken.

• ...read more
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Q1. What is /mnt and fstab?
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The /mnt directory is used as a mount point for temporary mounting of filesystems, and fstab is a configuration file that lists filesystems to be mounted at boot.
• The /mnt directory is commonly used for temporarily mounting external storage devices or network shares.

• The fstab file is located at /etc/fstab and contains information about filesystems to be mounted at boot time.

• Entries in fstab include the device to mount, ...read more
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Q2. You are unable to unmount a file system, what will you do?
Ans. 
Check for any processes or open files using the file system, then force unmount if necessary.
• Check for any processes or applications currently using the file system with 'lsof' command

• Kill any processes that are using the file system if necessary

• Try unmounting the file system again using 'umount -l' to force unmount if needed
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Q3. What do you understand by NFS?
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NFS stands for Network File System, a distributed file system protocol that allows a user on a client computer to access files over a network.
• NFS allows a user to access files on a remote server as if they were local files.

• It is commonly used in Unix and Linux environments for sharing files and directories.

• NFS uses RPC (Remote Procedure Call) to communicate between the client and server.

• It provides centralized storage ...read more
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Q4. Define Boot process.
Ans. 
Boot process is the sequence of steps that occur when a computer system is starting up.
• BIOS/UEFI initialization

• Loading the bootloader

• Loading the kernel

• Init process starts

• Launching user space processes
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Q5. Disk is assigned from the storage/VMware nut it is not visible for fs expansion, what will you do?
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Q1. In this round, most of the questions from the Resume. Questions related to background, academics, feasibility.
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Q2. Behavioral questions and your stickness to the organisation is checked at this level.
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Q1. The coding about data structure
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Q2. What is the design patter
Ans. 
Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating maintainable and scalable code.

• They provide a common language for developers to communicate about solutions.

• Examples include Singleton, Factory, Observer, and Strategy patterns.
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