As you asking I would like to say you should know that BSNL TTA Exam syllabus for all disciplines.

Its Syllabus includes three parts: 1) General Ability , 2) Basic Engineering, and 3) Specialization.

You have to prepare all subjects in each part.

You should answer 200 questions in 180 minutes

Remember there is a negative marking for each wrong answer with 0.25 Marks, where each question carry 1 mark.

You are advised to study topics mentioned in the syllabus.

Do read good books according to syllabus , here I am telling name of some good books


BSNL Junior Engineer Recruitment Exam 2016
Rs 380.00

BSNL: Junior Engineer (TTA) Recruitment Exam Guide
Rs 187.00

BSNL Jr. Engineer (TTA) Exam Guide + Practice Workbook (Concept Notes
Rs 195.00

Guide to BSNL Telecom Technical Assistant(TTA) Junior Engineer (Erstwh
Rs 385.00

BSNL TTA Exam Book ,BSNL TTA Exam Guide 2016
Rs 383.00

Study Guide Tta (bsnl) Recruitment Exam. (icludes Practice Paper & Solved Paper 2013) Paperback English
Rs 680.00