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Netcracker Technology
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I was interviewed in Jan 2025.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
Polymorphism allows for flexibility and reusability in code.
It enables a single interface to be used for different data types or classes.
Examples include method overriding in inheritance and method overloading within a class.
STL MAPS are associative containers that store elements formed by a combination of a key value and a mapped value.
STL MAPS are implemented as red-black trees for efficient searching, insertion, and deletion.
Elements in a map are always sorted based on the key value.
Example: std::map<int, string> myMap; myMap[1] = 'one';
Encapsulation, Inheritance, Polymorphism, Abstraction in one code
Create a class with private variables and public methods to demonstrate encapsulation
Create a subclass that inherits from a parent class to demonstrate inheritance
Use method overloading or overriding to demonstrate polymorphism
Use abstract classes or interfaces to demonstrate abstraction
Memory leaks occur when a program fails to release memory it no longer needs, leading to inefficient memory usage.
Memory leaks can occur when a program dynamically allocates memory but forgets to deallocate it.
Common causes of memory leaks include not freeing memory after use, using incorrect deallocation functions, and circular references.
Memory leaks can lead to performance issues, crashes, and system instability.
Too...
Netcracker is a leading provider of BSS, OSS, and SDN/NFV solutions for service providers around the world.
Netcracker offers comprehensive solutions for business support systems (BSS), operations support systems (OSS), and software-defined networking (SDN) / network functions virtualization (NFV).
Netcracker has a strong track record of working with major service providers globally, including telecommunications companie...
Yes, I am available to join immediately.
I am currently not committed to any other projects.
I have completed all necessary notice periods at my previous job.
I am excited to start working with your team as soon as possible.
Basic OOPS, OS, Output related MCQs
2 medium level codes in a time frame of 1 hour, mostly oops related or array/string
Double array real life example: storing student names in different classes
Each index of the main array represents a different class
Each sub-array contains the names of students in that class
Example: [['Alice', 'Bob'], ['Charlie', 'David']]
I am a detail-oriented software engineer with a passion for problem-solving and continuous learning.
Detail-oriented
Passionate about problem-solving
Continuous learner
I was interviewed in Jan 2025.
I harden my Linux server by implementing security measures to protect against potential threats.
Regularly update the operating system and software to patch vulnerabilities
Disable unnecessary services and ports to reduce attack surface
Implement strong password policies and use SSH keys for authentication
Set up a firewall to control incoming and outgoing traffic
Monitor logs for suspicious activities and set up intrusion
Script to echo a line repeatedly
Use a loop to echo the line multiple times
Specify the number of times to repeat the line
Example: for i in {1..5}; do echo 'Hello, World!'; done
sed command is used for text manipulation in Linux. Special permissions include setuid, setgid, and sticky bit.
sed command is used for text substitution and manipulation in Linux
Syntax: sed 's/pattern/replacement/g' filename
Special permissions in Linux include setuid, setgid, and sticky bit
Setuid: allows a user to execute a file with the permissions of the file owner
Setgid: allows a user to execute a file with the perm...
To get MAC based routing table, use 'ip neigh show' command. When pinging a server, kernel sends ICMP packets and updates ARP cache.
Use 'ip neigh show' command to display MAC based routing table
Kernel sends ICMP packets when pinging a server
Kernel updates ARP cache with MAC address of the server
One performance tuning parameter is swappiness, which controls how often the system swaps data to disk.
To set swappiness temporarily, use the 'sysctl' command: sysctl vm.swappiness=10
To set swappiness permanently, edit the '/etc/sysctl.conf' file and add 'vm.swappiness=10'
Another performance tuning parameter is 'dirty_ratio' which controls the percentage of system memory that can be filled with dirty pages before proce...
To check WWN number, use commands like 'lsscsi' or 'lsblk' in Linux.
Use 'lsscsi' command to list SCSI devices and their WWN numbers
Use 'lsblk' command to list block devices and their WWN numbers
I applied via Naukri.com and was interviewed in Oct 2024. There were 2 interview rounds.
Netcracker Technology interview questions for popular designations
I applied via Referral
I am a detail-oriented Manual Test Engineer with 5 years of experience in testing web and mobile applications.
Experienced in creating test cases and executing them manually
Proficient in identifying and documenting software defects
Skilled in regression testing and test automation tools like Selenium
Strong analytical and problem-solving skills
Excellent communication and teamwork abilities
Bug cycle is the process of identifying, reporting, fixing, retesting, and closing a software bug.
Bug is identified by tester during testing phase
Bug is reported to development team
Development team fixes the bug
Tester retests the bug fix
If bug is fixed, it is closed. If not, cycle repeats
Get interview-ready with Top Netcracker Technology Interview Questions
I applied via Referral and was interviewed in Dec 2024. There were 2 interview rounds.
It was good experience
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
I applied via Approached by Company and was interviewed in Nov 2024. There was 1 interview round.
I applied via Naukri.com and was interviewed in Jul 2024. There were 3 interview rounds.
The profile I was interviewed for was Senior Software Engineer- Cloud/Golang.
1st round had questions related to Golang and its paradigms. Questions were relevant to the role.
2nd roud had questions related to problem solving with Golang.
Implemented microservices architecture to improve scalability and maintainability of the project.
Decomposed monolithic application into smaller, independent services
Utilized containerization technology like Docker for easy deployment and scaling
Implemented service discovery and load balancing for better performance
Used API gateways for centralized access control and monitoring
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