What to read first, and how much time to give each topic
First, a caution about the exam pattern
What is not confirmed
The circular (Post No. 02 — Assistant Manager, Technical; pay Grade 9; BSc Engineering EEE/ECE/ETE/CSE; maximum age 32) does not state the marks or the question pattern of the written exam. What Gemini wrote — "BUET pattern = block diagram + math + point-form answers" — is a guess, not a verified fact. So confirm the question pattern from the admit card, the Teletalk notice and the job portal (jobs.teletalk.com.bd).
As per serials 07 and 10 of the circular, the exam has three stages: written, practical and viva. For each stage you must carry the original copy of your National ID (NID). The circular does not say what the "practical" exam will be — it is probably computer/scripting/configuration or simulation-based work, so do not neglect Chapter 14 (this is my guess).
As per serials 07 and 10 of the circular, the exam has three stages: written, practical and viva. For each stage you must carry the original copy of your National ID (NID). The circular does not say what the "practical" exam will be — it is probably computer/scripting/configuration or simulation-based work, so do not neglect Chapter 14 (this is my guess).
These notes are built for two types of questions: (a) MCQ — so every chapter ends with MCQs; (b) short written / numerical questions — so there are formulas, step-by-step solutions and hand-drawable diagrams. What you must write is somewhat technology-centred engineering thinking. BUET questions usually test understanding, not memorisation, so learn the answers to "why" questions with understanding.
Priority: how important is each topic
Time is short (today is 14 October, the exam is on 16 October), so the topics are arranged in three tiers. The circular lists every topic as equally important, but for an EEE/ETE graduate the order below is practical:
| Tier | Chapters | Why |
|---|---|---|
| A — First of all | 3, 4, 5, 9, 10, 11, 12 | Core network, call flow, IMS, authentication — more than half of the circular topics come from here |
| B — Next | 1, 2, 6, 7, 8, 13 | Radio basics, maths (dB, Erlang, link budget), NFV / O-RAN / slicing, power |
| C — Scoring bonus | 14, 15, 16, 17 | Scripting, Bangladesh telecom, communication, aptitude — marks can be collected in a short time |
Two-day routine (14 and 15 October)
| Time | What to do |
|---|---|
| 14 Oct — morning | Chapters 3 → 4 → 5 (cellular concepts, core/backhaul, packet core) — do the MCQs of each |
| 14 Oct — afternoon | Chapters 9 → 10 → 11 → 12 (call flow, IMS, HSS/AKA) — draw the diagrams yourself by hand |
| 14 Oct — night | Chapters 1 and 2 (dB, Shannon, link budget, Erlang formulas) — practise the maths |
| 15 Oct — morning | Chapters 6, 7, 8 (NFV, O-RAN, slicing) + Chapter 13 (power, battery calculations) |
| 15 Oct — afternoon | Chapters 14–17 (scripting, Bangladesh telecom, communication, aptitude) |
| 15 Oct — night | Appendix model tests (against the clock); look through the formula and abbreviation tables once; sleep early |
| 16 Oct — morning | Only run your eyes over the formula summary and the diagrams. Do not read anything new |
How to study (in each chapter)
- Read the concept part once — understand the definition and "why this is needed".
- Draw the diagram yourself on paper (boxes + interface names).
- Cover the solved example, solve it yourself, then compare.
- Do the MCQs and write your mistakes in a separate notebook; on the last night read only those.
General MCQ trick
Keep interface/node names (e.g. S1-MME, N4, Cx, S6a) and abbreviations on the tip of your tongue — they are favourite places for MCQs. In maths, check units carefully (dB vs dBm, Mbps vs MBps).