Hello,
The re is not a big difference between CSE core and CSE Specialization. In CSE Specialization, you have to three to five additional courses. CSE specialization focuses specifically towards a particular domain. F or example CSE with specialisation in IoT people has to master in IoT side with the knowledge of CSE.
However, You will learn more about the core system and coding in CSE core. You also have a choice of taking any electives of your choice during B.Tech.
Both core and specialisation people get same opportunities when it comes to placements. They have equal opportunities and there is not a big difference between the placements as well. For example, if suppose any company visits and they want a job profile in IoT design, then definitely the company will give more preference to CSE with IoT students.
I hope this helps,
All the best
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