Amdocs Interview Questions, Process, and Tips

Q1. Kubernetes related scenario based questions
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Q2. Day to day scenario based questions of devops
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Q1. Microservice architecture based questions for error handling
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Q2. Kafka architecture based question
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Q1. Design a system reading from a CDN
Ans. 
Design a system to read from a CDN
• Utilize a CDN to store and deliver content efficiently

• Implement caching mechanisms to reduce load times

• Use a content delivery network like Cloudflare or Akamai

• Consider implementing a multi-CDN strategy for redundancy and performance optimization
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Q2. How would you do memory management
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Memory management involves allocating and deallocating memory efficiently to optimize system performance.
• Use dynamic memory allocation functions like malloc, calloc, and realloc to allocate memory as needed

• Track memory usage and release unused memory using free function to prevent memory leaks

• Implement memory pooling or caching to reuse memory blocks and reduce overhead of frequent allocation/deallocation

• Use memory pro...read more
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It consisted of both technical programming and theoretical concepts. C++ and SQL

Q1. Consisted of scenario based questions from technical domain.
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Q2. Differentiate all sorting algorithms
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Sorting algorithms differ in their approach to sorting elements in an array.
• Bubble Sort - compares adjacent elements and swaps them if they are in the wrong order

• Merge Sort - divides the array into two halves, sorts them, and then merges them

• Quick Sort - picks a pivot element and partitions the array around the pivot

• Selection Sort - repeatedly selects the minimum element and swaps it with the current element

• Insertion S...read more
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Q1. Simple resume related non technical.
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One hour of Test with C program and aptitude

Q1. Question on C language , Linux and SQL
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Q2. Basic commands in Linux
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Q3. Strings manipulations' in C
Ans. 
String manipulation in C involves various functions to perform operations on strings like concatenation, comparison, and copying.
• Use functions like strcpy() for copying strings

• Use functions like strcat() for concatenating strings

• Use functions like strcmp() for comparing strings
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Q1. Salary Discussion
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Q1. How do you convert Monolith to Microservices?
Ans. 
Convert Monolith to Microservices involves breaking down a large application into smaller, independent services.
• Identify bounded contexts within the monolith

• Decompose the monolith into separate services based on identified bounded contexts

• Implement communication between services using APIs or messaging queues

• Use containerization technologies like Docker for deployment

• Implement service discovery and load balancing for e
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Q2. What would you use to store password? String or CharArray?
Ans. 
CharArray should be used to store passwords for security reasons.
• CharArray is more secure as it can be cleared from memory after use, unlike String which is immutable

• String objects are stored in the String pool and can be accessed by other parts of the program

• CharArray allows for more control over the password data and reduces the risk of exposure
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Q3. What is an API Gateway in Microservices?
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API Gateway in Microservices acts as a single entry point for all client requests to access multiple microservices.
• API Gateway handles authentication, authorization, load balancing, caching, and routing of requests to appropriate microservices.

• It helps in decoupling client applications from individual microservices, providing a more centralized and manageable architecture.

• Examples of API Gateways include Netflix Zuul,
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Q4. What is a Spring Actuator?
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Spring Actuator is a feature in Spring Boot that allows monitoring and managing the application.
• Spring Actuator provides endpoints to monitor application health, metrics, info, etc.

• It helps in understanding the internal state of the application and its performance.

• Actuator endpoints can be accessed over HTTP, providing useful information for monitoring tools.

• Example: /actuator/health, /actuator/metrics, /actuator/info
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Q1. What are different parameters in jcl
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Different parameters in JCL include job name, job class, job priority, job card, job statement, job steps, and job disposition.
• Job name: Identifies the job to the operating system

• Job class: Specifies the class of resources the job requires

• Job priority: Determines the order in which jobs are executed

• Job card: Contains information about the job such as account number, job name, and programmer name

• Job statement: Defines t...read more
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Q2. Explain the different division in cobol?
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In COBOL, divisions are used to organize the program into different sections based on functionality.
• COBOL programs are divided into four divisions: Identification, Environment, Data, and Procedure.

• Identification Division contains program name, author, date, etc.

• Environment Division specifies the hardware and software environment.

• Data Division defines the data structures used in the program.

• Procedure Division contains t...read more
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