viAct Interview Questions and Answers

- find 2nd min and Max from array
- find mid of linked list
- reverse stack

Q1. Search element is 2d matrix, which is sorted row and column wise.
Ans. 
Search element in a sorted 2D matrix
• Start from the top right corner or bottom left corner

• Compare the target element with the current element

• Move left or down if the target is smaller or move right or up if the target is larger
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Q2. How web works, what happens after you type any url in browser?
Ans. 
When a URL is typed in a browser, it sends a request to the server which responds with the requested web page.
• Browser checks cache for DNS resolution

• If not found, browser sends a DNS request to resolve the domain name to an IP address

• Browser sends an HTTP request to the server at the IP address

• Server responds with the requested web page

• Browser renders the web page
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Q3. Explain different layers in OSI model
Ans. 
The OSI model has 7 layers that define how data is transmitted over a network.
• Layer 1: Physical layer - deals with the physical aspects of transmitting data

• Layer 2: Data link layer - responsible for error-free transfer of data between nodes

• Layer 3: Network layer - handles routing and forwarding of data packets

• Layer 4: Transport layer - ensures reliable delivery of data between end systems

• Layer 5: Session layer - establ...read more
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Q4. Difference between TCP and UDP
Ans. 
TCP is a connection-oriented protocol while UDP is connectionless.
• TCP provides reliable, ordered, and error-checked delivery of data while UDP does not guarantee any of these.

• TCP is slower but more reliable while UDP is faster but less reliable.

• TCP is used for applications that require high reliability and accuracy while UDP is used for applications that require speed and efficiency.

• Examples of TCP-based applications i...read more
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Q5. Questions related to switch and router
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Q6. Different ways of process scheduling
Ans. 
Process scheduling can be done using various algorithms such as FCFS, SJF, Round Robin, Priority scheduling, etc.
• First Come First Serve (FCFS) - Processes are executed in the order they arrive.

• Shortest Job First (SJF) - Processes with the shortest burst time are executed first.

• Round Robin - Processes are executed in a cyclic manner with a fixed time slice.

• Priority Scheduling - Processes with higher priority are execute...read more
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Q1. Where do you see your self in 5 years
Ans. 
In 5 years, I see myself as a senior software engineer leading a team of developers and working on complex projects.
• Leading a team of developers

• Working on complex projects

• Continuously learning and staying updated with the latest technologies

• Contributing to the growth and success of the company

• Mentoring and guiding junior engineers
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Q2. What do you know about versa network
Ans. 
Versa Networks is a software-defined networking (SDN) company that provides cloud-native solutions for secure connectivity and network management.
• Versa Networks specializes in SD-WAN (Software-Defined Wide Area Networking) solutions.

• Their solutions enable organizations to securely connect and manage their networks across multiple locations and cloud environments.

• Versa Networks offers features like traffic optimization,...read more
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Q3. Introduction yourself
Ans. 
I am a software engineer with expertise in developing and maintaining software applications.
• Proficient in programming languages such as Java, C++, and Python

• Experienced in developing web applications using frameworks like Spring and Django

• Skilled in database management and SQL queries

• Familiar with version control systems like Git

• Strong problem-solving and analytical skills

• Excellent communication and teamwork abilities
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