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

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

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