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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It was hard test and very tough

Coding was very hard bro so you have to study nicely

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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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. 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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