Software Engineer IV Interview Questions and Answers

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

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

Designing a URL shortening service to convert long URLs into short, manageable links.

• Define the core functionality: Accept long URLs and return a shortened version.

• Use a hash function to generate unique keys for each URL, e.g., MD5 or SHA-256.

• Implement a database to store mappings of short URLs to long URLs.

• Create a redirection service that takes a short URL and retrieves the original URL.

• Consider adding features like analytics to track link usage and expiration for temporary...read more

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