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GATE 2018 Computer Science (CS) Answer Key, Question Paper & Analysis

Last Updated - March 12, 2018

GATE CS Paper 2018 was successfully conducted on February 4. The session was held from 9:00 am to 12:00 hrs. GATE official answer keys and question paper has been released to make candidates aware of the correct answers and thus referred for evaluating GATE Scores.

Computer Science and Information Technology (CS)Question Paper Answer Key 

Based on official answer keys, GATE Result is declared which is expected to be declared on March 17, 2018.

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The final answer keys for GATE 2018 will be published after considering all the objections (if, raised by the candidates) at www.gate.iitg.ac.in in 1st week of March. Read on to know GATE CS Paper Analysis and unofficial answer keys. The unofficial GATE answer keys are released by coaching centers just after the conduct of exam. However, the answer keys released by coaching centers may differ from official GATE answer keys.

GATE CS 2018 Paper Highlights

Paper CodeCS
Shift/Session09:00 – 12:00 hrs
No. of Questions65
Maximum Marks100
Types of QuestionsObjective (MCQs, NAT)
SectionsEngineering Mathematics, General Aptitude & Subject Specific

Check GATE Paper Pattern


How to calculate GATE Marks using answer key?

The total marks equals the count of marks gained in the correct answers and deduct the marks lost in incorrect markings. The marking scheme of GATE CS Paper is provided below:

  • MCQs carrying 1 marks each, 1/3 marks would be deducted as a penalty of marking the wrong answer.
  • For questions carrying 2 marks, 2/3 marks would be deducted for marking an incorrect answer.
  • The NAT questions doesn’t have the provision of negative marking.

NAT Marks = Total marks (1 mark each question) + Total marks (2 marks each question)

Total Marks obtained for MCQs = [{+1(for each correct answer carrying 1 mark) – 1/3 (for each incorrect answer carrying 1 mark)} + {2 (for each correct answer carrying 2 marks) – 2/3 (for each incorrect answer carrying 2 marks)}]

GATE Marks= Marks obtained for MCQs + Marks obtained for NAT questions

Marks obtained in GATE and GATE Scores are two different entities. After the evaluation of answers, the raw marks (actual marks obtained in GATE) will be considered for calculating GATE Score. Check GATE Score Calculation


GATE 2018 Computer Science paper

Candidates can score well in the technical part of the question paper. Topics like Computer Networks, Operating Systems, DBMS, Verbal Ability and Numerical Ability were important and scoring. Questions in GATE 2018 CSE paper were conceptual based. Candidates must have all the concepts related to the topics of the question paper clear and recommended to attempt 1 mark question first as they could be scoring.

Check out the the GATE 2018 CS Paper Analysis (CS/IT) by The Gate Academy below. The analysis is made on the memory based questions. 

Distribution of questions were from the topics listed below:

  • Engineering Mathematics 7%
  • Operating System 10%
  • Programming and Date Structure 10%
  • Desgin and Analysis of Algorithm 7%
  • Discrete Mathematics and Graph Theory 12%
  • Computer Organization and Architecture 11%
  • Theory of Computation 7%
  • Digital Logic 4%
  • Database Management System 4%
  • Computer Networks 7%
  • Compiler Desgin 6%
  • General Aptitude 15%

GATE 2018 CSE Section Wise Analysis

Gate 2018 CSE question paper comprises of three sections that include Technical Section, General Aptitude and Engineering Mathematics. The analysis of all the sections are elaborated below separately. 

It can be seen that the GATE 2018 has surprised the students by limiting the questions based on Engineering Mathematics from 15% to 7%. Even it is reported by many students that the techincal questions were somewhat tricky than that of last year.

  1. Technical Section:

The technical section of GATE 2018 question paper is the core subject as all the B.Tech. graduates would be appearing for the test. So, the questions from this section might carry more weightage from the other two sections. It was time-consuming section with the moderate difficulty level. Subtopics like Data Structure & Algorithms, Theory Computation, Computer Networks and suchlike play a vital role to score high marks in the technical section.

  1. General Aptitude:

General aptitude is a section that is common in all GATE question papers. The difficulty level, however, is expected to be moderate to easy for this section. If practised and studied well, this section could be less time consuming and easy to attempt.

  1. Engineering Mathematics:

Engineering mathematics is a subject that is introduced to students in their B. Tech program. It comprises of Linear Algebra, Calculus, Differential Equations, Complex Variables and Numerical Methods Questions. As per the analysis, the questions of this section were moderate. Students are recommended to be very careful with their silly mistakes while attempting this section.


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