Software Engineer IV

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Software Engineer IV Interview Questions and Answers

Updated 7 Nov 2024

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Q1. How tcp/ip works and explain about tcp header

Ans.

TCP/IP is a protocol used for communication between devices on a network. TCP header contains information about the data being transmitted.

  • TCP/IP is a suite of protocols used for communication between devices on a network

  • TCP is a connection-oriented protocol that ensures reliable delivery of data

  • IP is a connectionless protocol that handles the routing of data packets

  • TCP header contains information such as source and destination ports, sequence and acknowledgement numbers, and...read more

Q2. How vlan works and explain about vlan header

Ans.

VLAN is a logical network created by grouping devices together based on their functions or departments.

  • VLAN stands for Virtual Local Area Network

  • It allows multiple networks to coexist on the same physical network

  • VLANs are created by assigning a group of devices to a specific VLAN ID

  • VLAN header contains a 4-byte tag that identifies the VLAN ID

  • VLAN header is added to the Ethernet frame before transmission

Q3. Difference between Process and Threads

Ans.

Processes are independent instances of a program, while threads are smaller units within a process sharing resources.

  • Processes have their own memory space, while threads share the same memory space within a process.

  • Processes are heavyweight, while threads are lightweight.

  • Processes communicate with each other through inter-process communication mechanisms, while threads can communicate directly.

  • Example: A web browser running multiple tabs is a process, and each tab running Jav...read more

Q4. Explain DNS protocol

Ans.

DNS protocol is used to translate domain names to IP addresses on the internet.

  • DNS stands for Domain Name System

  • It translates human-readable domain names (like www.google.com) to IP addresses (like 172.217.3.206)

  • DNS operates on a client-server model, with DNS servers hosting DNS records for different domains

  • DNS queries are sent by clients to DNS servers to resolve domain names to IP addresses

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Q5. Leecode Hard Problem

Ans.

Leetcode Hard Problem - Find the answer to a challenging coding problem.

  • Understand the problem statement thoroughly before attempting to solve it.

  • Break down the problem into smaller subproblems if possible.

  • Consider different approaches and analyze their time and space complexity.

  • Test your solution with different test cases to ensure correctness.

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