comScore System Engineer Interview Questions and Answers

Q1. Work and Project related
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Q1. Code Debugging, SQL, Cloud
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Basic aptitude questions were asked in this round

Q1. What is database
Ans. 
A database is a structured collection of data that is organized and managed to provide efficient retrieval and storage.
• A database is a software system that stores and manages data.

• It provides a way to organize and structure data for easy retrieval and manipulation.

• Databases can be relational, object-oriented, or hierarchical.

• Examples of databases include MySQL, Oracle, and MongoDB.
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Q2. What is quick sort
Ans. 
Quick sort is a sorting algorithm that uses a divide-and-conquer approach to sort an array of elements.
• It selects a pivot element and partitions the array into two sub-arrays, one with elements smaller than the pivot and the other with elements greater than the pivot.

• The process is repeated recursively on the sub-arrays until the entire array is sorted.

• It has an average time complexity of O(n log n) and is widely used
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Q1. What is your current location
Ans. 
I am currently located in New York City.
• New York City

• USA

• East Coast

• Manhattan
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Basic apti questions were asked

Q1. What is sorting
Ans. 
Sorting is the process of arranging elements in a specific order, typically ascending or descending.
• Sorting is used to organize data for easier retrieval and analysis.

• Common sorting algorithms include bubble sort, insertion sort, and quicksort.

• Sorting can be done on various data structures, such as arrays, lists, and trees.

• Example: Sorting an array of strings alphabetically.
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Q2. What is database
Ans. 
A database is a structured collection of data that is organized and managed to provide efficient retrieval and storage.
• A database is a software system that stores and manages data.

• It provides a way to organize and structure data for easy retrieval and manipulation.

• Databases can be relational, object-oriented, or hierarchical, depending on the data model used.

• Examples of databases include MySQL, Oracle, and MongoDB.
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Q1. What is your expectation
Ans. 
My expectation is to work in a challenging and dynamic environment where I can utilize my skills and knowledge to contribute to the success of the organization.
• To work with a team of talented professionals

• Opportunities for professional growth and development

• A supportive and collaborative work culture

• Clear communication and expectations from management

• A fair and competitive compensation package
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Q1. Linux booting process
Ans. 
Linux booting process involves several stages from power on to user login.
• BIOS/UEFI firmware initializes hardware

• Bootloader (GRUB) loads kernel into memory

• Kernel initializes system processes and mounts root filesystem

• Init process starts user space processes and services

• User login prompt is displayed
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Q2. DHCP process
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Q1. Basics of SQL and Scripts
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Q2. Health care related questions
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It was hard test and very tough

Coding was very hard bro so you have to study nicely

Q1. How to improve performance of a database or SQL
Ans. 
To improve performance of a database or SQL, optimize queries, use indexes, normalize data, and consider hardware upgrades.
• Optimize queries by using proper indexing and avoiding unnecessary joins

• Normalize data to reduce redundancy and improve data integrity

• Consider hardware upgrades such as increasing RAM or using solid-state drives

• Monitor and analyze query performance using tools like SQL Profiler or EXPLAIN
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Q2. How to install RAC
Ans. 
Installing RAC involves configuring shared storage, network, and Oracle Grid Infrastructure.
• Prepare shared storage for Oracle Clusterware files

• Configure network settings for interconnect and public network

• Install Oracle Grid Infrastructure software on all nodes

• Run the Oracle Clusterware Configuration Wizard to create the cluster

• Install Oracle RAC software on all nodes

• Create the database using Database Configuration Ass
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