SISL Infotech System Engineer Interview Questions and Answers

There where two paper one was of maths and second paper was of engligh.

There where ten person in one GD, topic was provided us by them.

Q1. It was technical interview. They have asked about our project in our resume. After that they asked questions on based of that project.
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Q1. Basic Networking Concepts like OSl/TCP/IP models. Basic protocols.
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Q2. Current Windows and Android OS info with their differences from the past versions.
Ans. 
Windows and Android OS have evolved with new features and improvements compared to past versions.
• Windows 10 introduced a new Start menu and Cortana virtual assistant.

• Android 11 focused on improved privacy controls and messaging features.

• Both OS have enhanced security measures compared to their past versions.
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Q1. Networking Questions about devices and their functionality.
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Q2. Deep networking topics like Subnetting, NAT and their working.
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Q1. This a one-on-one final round with director. He himself was systems Engineer. Expect deep networking concept questions.
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Q1. What is VPN virtual private network?
Ans. 
VPN is a secure connection between two or more devices over the internet.
• VPN encrypts data to ensure privacy and security

• It allows remote access to a private network

• It can be used to bypass geo-restrictions and access blocked content

• Examples include OpenVPN, Cisco AnyConnect, and NordVPN
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Q2. Specifications about ping cmd
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Ping cmd is a network diagnostic tool used to test connectivity between two devices.
• Ping sends ICMP packets to the destination device and measures the response time.

• It can be used to test network latency, packet loss, and network congestion.

• Ping can also be used to determine the IP address of a device.

• Ping can be run from the command prompt on Windows, macOS, and Linux systems.

• Ping can be used with various options such...read more
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Q3. Explain how to dual boot system
Ans. 
Dual booting allows two operating systems to be installed on one computer, giving the user the option to choose which to use.
• Create a separate partition for each operating system

• Install the first operating system on one partition

• Install the second operating system on the other partition

• Use a boot manager to choose which operating system to boot into

• Examples of boot managers include GRUB and Windows Boot Manager
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Q4. What is virtual machine
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A virtual machine is a software emulation of a physical computer that can run multiple operating systems and applications.
• Virtual machines allow for efficient use of hardware resources by sharing them among multiple virtual machines

• They provide a secure and isolated environment for running applications

• Virtual machines can be easily created, cloned, and moved between physical hosts

• Examples of virtual machine software in
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There where two paper one was of maths and second paper was of engligh.

There where ten person in one GD, topic was provided us by them.

Q1. It was technical interview. They have asked about our project in our resume. After that they asked questions on based of that project.
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Q1. Explain sticky bit example
Ans. 
Sticky bit is a permission set on a directory to allow only the owner to delete or rename files within that directory.
• Sticky bit is represented by a 't' at the end of the permission string for a directory.

• It is commonly used on directories like /tmp to prevent users from deleting each other's files.

• Example: chmod +t /tmp
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Q2. /tmp is an example
Ans. 
The /tmp directory is a temporary directory used for storing temporary files in Unix-like operating systems.
• Used for storing temporary files

• Files in /tmp are typically deleted upon system reboot

• Should not be used for storing important data
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