TCP questions

3 job-exam questions on TCP from 3 papers — BCC, BSCPLC, DPDC and more — with answers and discussion.

Papers

August 2026 – Written (BUET) — BSCPLC · Assistant Manager (CSE)
October 2025 – Written (BCC) — BCC · Assistant Network Engineer (CSE)
October 2025 – Written (BUET) — DPDC · Assistant Engineer (CSE)

Questions

What is the difference between TCP and UDP?
In the TCP/IP model, how is data known in the different layers?
A client needs to send 4000 bytes of data to a database server. The client divides the data into packets of 500 bytes each. The sequence…