Comac india Interview Questions and Answers

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.
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Q2. Find missing number from nth number array.
Ans. 
Find missing number from nth number array.
• Iterate through the array and calculate the sum of all numbers

• Calculate the sum of numbers from 1 to n using the formula n*(n+1)/2

• Subtract the sum of array from the sum of numbers from 1 to n to find the missing number
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Q3. Explain inheritance and it types
Ans. 
Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows a class to reuse code from another class.

• Types of inheritance include single inheritance, where a class inherits from only one parent class, and multiple inheritance, where a class inherits from multiple parent classes.

• Example: Class B inherits from Class A, so Class B can access
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Q4. Find 2nd max elements from aaray
Ans. 
Find 2nd max element from array of strings
• Sort the array in descending order

• Skip the first element (max element)

• Return the second element
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Q1. Difference between wifi AC and Ax
Ans. 
Wifi AC is the 5th generation of wifi technology, while Wifi Ax is the 6th generation with improved speed and efficiency.
• Wifi AC operates on the 5 GHz band, while Wifi Ax operates on both 2.4 GHz and 5 GHz bands.

• Wifi Ax supports MU-MIMO (Multi-User, Multiple Input, Multiple Output) technology for better performance in crowded networks.

• Wifi Ax offers higher data rates and improved efficiency compared to Wifi AC.

• Wifi Ax ...read more
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Q2. What is called as DTIM?
Ans. 
DTIM stands for Delivery Traffic Indication Message, used in Wi-Fi networks to inform clients about the presence of buffered broadcast and multicast frames.
• DTIM is a parameter in the Wi-Fi beacon frame that indicates to clients how often they should wake up to receive broadcast and multicast traffic.

• It helps in saving battery life for devices by allowing them to sleep for longer periods of time.

• Clients can set their po...read more
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Q1. What do you mean by SEO?
Ans. 
SEO stands for Search Engine Optimization, which is the practice of increasing the quantity and quality of traffic to your website through organic search engine results.
• SEO involves optimizing your website to improve its visibility on search engines like Google.

• It includes keyword research, on-page optimization, link building, and content creation.

• The goal of SEO is to drive more organic traffic to your website and imp...read more
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Q2. What do you mean by Domain and hosting.
Ans. 
Domain is the address of a website, hosting is the service that stores the website's files and makes it accessible online.
• Domain is the unique address of a website on the internet, like www.example.com

• Hosting is the service that stores the website's files and data on a server, making it accessible online

• Domain registration is the process of purchasing and owning a domain name

• Web hosting providers offer different types ...read more
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Q3. Tell me something about your self?
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Q4. What are the main SEO tools?
Ans. 
Some main SEO tools include Google Analytics, SEMrush, Ahrefs, Moz, and Screaming Frog.
• Google Analytics for tracking website traffic and user behavior

• SEMrush for keyword research and competitive analysis

• Ahrefs for backlink analysis and site auditing

• Moz for SEO insights and rank tracking

• Screaming Frog for website crawling and technical SEO analysis
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Q5. What is Google Adwords?
Ans. 
Google Adwords is an online advertising platform developed by Google, where advertisers pay to display brief advertisements, service offerings, product listings, video content, and generate mobile application installs within the Google ad network to web users.
• Online advertising platform by Google

• Advertisers pay to display ads

• Can display various types of ads like text, display, video, etc.

• Helps in reaching target audien
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Q6. What is Organic search?
Ans. 
Organic search refers to the unpaid search results generated by search engines based on relevance to the user's query.
• Organic search results are not influenced by paid advertising.

• Websites can improve their organic search rankings through search engine optimization (SEO) techniques.

• Examples of organic search results include links to websites, blogs, and articles that are deemed relevant to the user's search query.
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Q7. What do you mean by keywords?
Ans. 
Keywords are specific words or phrases that describe the content of a webpage and are used in SEO to help search engines understand the topic of the page.
• Keywords are used to optimize a website's content for search engines.

• They help search engines match a webpage to relevant search queries.

• Examples of keywords include 'SEO tips', 'best digital marketing agency', 'how to increase website traffic'.
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Q8. What is keywords analysis?
Ans. 
Keywords analysis is the process of researching and identifying the most relevant keywords for a website to improve its search engine rankings.
• Keywords analysis involves identifying popular search terms related to a website's content.

• It helps in understanding what keywords users are searching for and how competitive those keywords are.

• Tools like Google Keyword Planner can be used for keywords analysis.

• The goal is to se...read more
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2 coding questions were given , Running atleast one question with all test cases passing is mandatory.

Q1. Bit manipulation question(asked to write atleast pseudo code)
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Q2. Array based question(asked to write atleast pseudo code)
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Q1. Major Audit observation
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Q2. Procurement audit checklist
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MCQ - 20 (aptitude), 20(c+ and sql)

Pattern, array and sql questions

Q1. Securitisation and how it works.
Ans. 
Securitisation is the process of pooling various types of debt and selling them as securities to investors.
• Securitisation involves bundling together various types of debt, such as mortgages, auto loans, or credit card debt.

• These debts are then sold to a special purpose vehicle (SPV) which issues securities backed by the cash flows from the underlying assets.

• Investors purchase these securities and receive payments based...read more
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Q2. Financial Ratios and how they work and what is a good number to have.
Ans. 
Financial ratios are tools used to evaluate a company's financial performance and health.
• Financial ratios are calculated using data from a company's financial statements.

• They help investors and analysts assess a company's profitability, liquidity, efficiency, and solvency.

• A good number for a financial ratio can vary depending on the industry and company size.

• For example, a current ratio of 2 or higher is generally cons...read more
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Q3. Random number crunching based on some scenario that needs you to make assumptions and get an answer
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Q4. How an Excel function works. (Vlookup, Hlookup, Xlookup, IF/AND/OR)
Ans. 
Excel functions like Vlookup, Hlookup, Xlookup, IF/AND/OR are used for data lookup and logical operations.
• Vlookup: Searches for a value in the first column of a table and returns a value in the same row from a specified column.

• Hlookup: Similar to Vlookup but searches for a value in the first row of a table.

• Xlookup: A more versatile version of Vlookup and Hlookup that can search both vertically and horizontally.

• IF: Retu...read more
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Q1. Personal Questions.
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Q2. My expertise and proficiency of excel
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Q1. No questions. Was confirmed my job
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