Senior Systems Engineer

10+ Senior Systems Engineer Interview Questions and Answers for Freshers

Updated 27 Jun 2024

Q1. whats is AD server and how its work?

Ans.

AD server is a server that runs Active Directory, a directory service that manages network resources and user accounts.

  • AD server is used to manage network resources and user accounts

  • It allows for centralized authentication and authorization

  • It uses a hierarchical structure of domains, trees, and forests

  • It can be used to manage access to resources such as files, printers, and applications

  • Examples of AD servers include Microsoft Active Directory and OpenLDAP

Q2. What is SQL Joins? What is Index?

Ans.

SQL Joins are used to combine data from two or more tables based on a related column.

  • Joins are used to retrieve data from multiple tables in a single query

  • Common types of joins are Inner Join, Left Join, Right Join, and Full Outer Join

  • Indexes are used to improve the performance of database queries by allowing faster data retrieval

  • Indexes can be created on one or more columns of a table

  • Examples of indexes include clustered index, non-clustered index, and unique index

Q3. What is OS? How DHCP Works?

Ans.

OS stands for Operating System. DHCP is a protocol used to assign IP addresses to devices on a network.

  • OS is the software that manages computer hardware and software resources.

  • DHCP assigns IP addresses to devices on a network automatically.

  • DHCP uses a client-server model, where the server assigns IP addresses to clients.

  • DHCP leases IP addresses to clients for a specific amount of time.

  • DHCP can also provide other network configuration information, such as DNS server addresses ...read more

Q4. What do you mean by throttling?

Ans.

Throttling refers to the process of limiting the amount of data or requests that can be sent or received within a certain time frame.

  • Throttling is used to prevent overload on servers or networks.

  • It can be implemented through software or hardware.

  • Examples include API rate limiting and internet service providers limiting bandwidth.

  • Throttling can also be used to intentionally slow down certain processes or devices.

  • It is important to balance throttling with user experience and pe...read more

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Q5. how to configure outlook?

Ans.

Configuring Outlook involves setting up email accounts, adding contacts, and customizing settings.

  • Open Outlook and click on File

  • Click on Add Account and enter your email address and password

  • Follow the prompts to complete the setup process

  • To add contacts, click on People and click on New Contact

  • To customize settings, click on File and select Options

Q6. What is a proxy server?

Ans.

A proxy server is an intermediary server between a client and the internet.

  • It acts as a gateway for requests from clients seeking resources from other servers.

  • It can be used for caching, filtering, and load balancing.

  • Examples include Squid, Nginx, and Apache.

  • It can enhance security by hiding the client's IP address.

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Q7. What is core java

Ans.

Core Java is the basic foundation of Java programming language.

  • Core Java is used for developing general applications.

  • It includes concepts like OOP, multithreading, exception handling, etc.

  • Examples of core Java classes are String, Integer, ArrayList, etc.

Q8. Comparator vs Comparable

Ans.

Comparator is used to define custom sorting order for objects, while Comparable is used to define natural ordering of objects.

  • Comparator is an external class used for custom sorting logic

  • Comparable is an interface used for natural ordering of objects

  • Comparator can be used to sort objects based on multiple criteria

  • Comparable is implemented by the class itself to define default sorting behavior

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Q9. Internal working of hashmap

Ans.

HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.

  • HashMap internally uses an array of linked lists to store key-value pairs.

  • When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

  • If multiple keys hash to the same index, a linked list is used to handle collisions.

  • HashMap allows null keys and values, but only one null key.

  • Example: HashMap map = new HashMap<>();...read more

Frequently asked in, ,

Q10. Diff between html and html5

Ans.

HTML is the standard markup language for creating web pages, while HTML5 is the latest version with new features and improvements.

  • HTML is the older version of the markup language used for creating web pages.

  • HTML5 is the latest version with new features like native support for video and audio, canvas element for graphics, and improved semantics.

  • HTML5 also includes new APIs for offline web applications, drag-and-drop interactions, and more.

  • HTML5 is more mobile-friendly and supp...read more

Q11. Type of HTTP Methods

Ans.

HTTP methods are used to indicate the desired action to be performed on a resource.

  • GET - retrieve data from a server

  • POST - submit data to be processed by a server

  • PUT - update a resource on the server

  • DELETE - remove a resource from the server

  • PATCH - partially update a resource on the server

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