Monday, January 12, 2015

Gate tips



Gate Rank: 241                                                            Current college: IIT Delhi

Materials used for studying:
Gate notes I made during GATE classes at gateforum.
Also referred some topics from these notes 


Books referred:
Algo: Cormen,
Data structures:TMH Lipchitz
Os Tanenbaum
Database Korth
Cn Fourouzan and Tanenbaum. Mostly fourouzan

Gate previous years:
Made easy gate previous year question bank. (Topic wise division of questions, better for preparing, as after every topic we get all questions at the one place)
Gateforum Gate Question(Better explanation in answers. Also had questions from IT papers)
Though both books had errors in answers but answers were better in gateforum book.


Test Series:
I joined gateforum online test series. It was good but I can’t compare it with other test series as I only joined this. The interface was good, similar to actual gate exams. Quality of questions was also ok(not too good not bad either). There were some errors, but I could get them easily as they gave good explanations and in explanations too sometimes they pointed out errors. Test series in my view is a must for improving one’s rank.


Experiences:
I mostly followed what teachers taught at my institute nothing more or less than that. I thoroughly went through each and every GATE previous year question related to the topic, after covering any topic. Gate previous year questions help us evaluate whether we are on the right track with our preparation or something is being missed. Most of the doubts were cleared with fellow friends or on facebook groups and those left I asked to the teachers in class.
I knew I had never studied as well as was weak in TOC as well as compiler design, so I didn't give much time to it, I rather concentrated on rest of the subjects, where I was strong and were more scoring, and did only theory and the parts that I liked from these subjects.
Gate online test series was one of the most helpful source of confidence and an important tool to analyze our preparation. It helps us realize where we stand compared to other aspirants and also where what we have done in previous week. The detailed analysis of the paper gave me insights into where I was wrong, what subjects I need to work this week, and to analyze subjects that I have studied in last week, were they helpful, by judging how much I attempted these subjects. It also helped me getting a hint of my accuracy rate and my capacity (how many questions I can/should aim for in the paper). It also helped me decide in what order I should attempt the paper.
After every paper, I used to discuss all the questions with my friend (on phone), we used to go through each question in the paper. This was very helpful, as helpful as the paper itself, as only knowing your mistakes is not enough, you need to work on them so that they are not repeated.
Here is a link to test series papers (pdfs):
Use them if you haven’t joined any test series but do them in time specified, only then will they be helpful.


Order of attempting paper:
Order of attempting the paper is really a matter of choice. As I was a little slow and many times couldn’t complete paper in allotted time, I first used to do the aptitude and English first then I used to move to 2 marks questions then I came back to 1 mark questions.
During the test series, I always had an aim to get more than 70 marks and attempting around 50-53 questions, which I could get to only onceL. But during main GATE exam, I just concentrated on attempting maximum questions, I did not try to reach 50 questions. I only had in mind to attempt at least of 50 marks, as below that, the colleges that I would have got were useless for me. I would suggest you to atleast read all the questions if there is less time left.


Gate Exam:
From the experience gained by giving the online tests I had a blue print of how I would attempt the paper and had an aim of attempting about 50-53 questions. I started answering questions of aptitude and verbal section. I could attempt 9 out of 10 questions from the section. I then moved on to 2 marks questions of the next section. I was on a roll, one by one I could solve around 5 questions .It gave me a lot of confidence which helped me in keep going without much thought. Next I lost track of the time and next time I looked at timer I had around 25 mins left and 19 questions of 1 mark left un-attempted(unread). It was time for me to accelerate. I picked up some speed and started doing questions which required less time first. By the time exam ended I had attempted 47 questions. I was upset as I thought I could have attempted 3-4 more questions had I managed time properly.


GATE Result
One thing good about GATE is that they give the result within a month. I got AIR 241, much better than I expected (around 500-700).


Post Gate:
I got call from most of the older IITs. IIT Bombay and IISC called me for secondary courses interviews, i.e. research assistantship and SERC respectively, in rest of the IITs, I got direct admission or an interview call.

In my experience, cracking GATE is very easy, you just have to be focused on your studies and a bit organized in your preparation. Smart work is as helpful as hard work.
Best of luck! May you succeed. :)

Monday, June 23, 2014

IIT Delhi(Computer Applications)

Joint Computer Applications program(JCA) is an interdisciplinary M.Tech program run by Mathematics, Computer Science and Electrical Engineering Departments at IIT Delhi. As I have already talked about IIT Delhi in a previous post, I will directly jump to course and interview details.

Selection Criterion
IIT Delhi shortlisted students based on GATE score and shortlisted candidates were called for interview conducted at the institute. The cut off GATE score for M.Tech JCA was 800 which was around rank 245 according to my guess as my rank/score were 241/802 and one of my friend's were 247/798. I considered myself very lucky to be just above the cut off score. In the selection process, both GATE score as well as the interview performance are given weightage.
Category
Minimum GATE norm score
CS/IT GATE only
Minimum aggregate percentage or CGPA in qualifying degree
Full time with Assistantship
General
800
60% or 6.75/10
OBC
720
60% or 6.75/10
SC/ST/PH
550
55% or 6.25/10
Part-time/ Industry Sponsored
General
75% or 8.5/10
OBC
74% or 8.3/10
SC/ST/PH
70% or 7.5/10
  
The interview date for JCA was 19th May. The date was clashing with IIT Bombay's Research Assistantship program's written and interview rounds, so we had a tough choice to make. I went for JCA program.
About Course
JCA is an interdisciplinary course which is governed by 3 departments, Mathematics, Computer Science and Electrical Engineering. Apart from CS and IT students, ECE, Maths and many more students are also eligible for this course. The program admits 20 students per year from these disciplines. JCA is a very flexible course as a student can choose subjects from any of the three departments. A student from computer science background can take all the elective subjects from  computer science department and would have to do only two maths courses discrete maths and numerical optimization. To read more about the course visit these links:
https://sites.google.com/site/jcaiitd/about-jca
http://mtech-admission-iits.blogspot.in/2011/01/jca-computer-applications-at-iit-delhi.html
http://gaurav89.wordpress.com/2012/03/18/jca-at-iit-delhi/

Jca Course Content 

Interview Round
Like IIT Kgp, the JCA program at IIT Delhi also had only interview round and no written test. The interview consisted mostly mathematics questions.They asked me to introduce myself, why I wanted to join M.Tech. There were questions about matrices, eigen values, definition of eigen values, uses of eigen values, mathematical logic questions, they asked me to make truth tables, gave expressions and asked whether it is tautology, address of a[i][j] element of a 2d array and some more array questions.

My interview didn't go well because I couldn't answer many of the mathematics questions.

Admission Result
The result of the interview was released about a 2-3 weeks after the interview. I got selected for admission in the institute and will join from 21st July, unless waiting list of MCS course clears.

Saturday, June 21, 2014

IIT Guwahati

Its one of the institute which take admission on the basis of gate score only, ie no interview, no written test.


Selection Criterion


IIT Guwahati shortlisted the applications based on the GATE score and the shortlisted candidates were called for the counselling at the institute. 


About Course


The course I applied for at IITG was MTech(CSE). There is also a dual degree program at IITG under the CSE department, but it is not for the CS students..(yes you read it right :P), so kindly read the eligibilty crietria carefully before filling the form.


Travel and Stay


There are direct air services from/to Mumbai, New Delhi and Kolkata with connectivity to all major cities in the country and direct train services from/to all the metropolis and other major cities. Air India, Jet Airways, Jetlite, Kingfisher, IndiGo, SpiceJet and GoAir operate regular flights to and from Guwahati.

It is around 20 km from the heart of the city and around 40 min drive from the airport. To reach the institute from the city, there is an Institute bus service that runs regularly to and from the city.
Also the institute will inform you about the bus timings in the call letter from the airport/station to IITG.
Or you can take a private cab/pre-paid taxis also.

There will be accomodation for the applicant only not for the person accompaning him/her.


The Institute


Indian Institute of Technology Guwahati, the sixth member of the IIT fraternity, was established in 1994. The academic programme of IIT Guwahati commenced in 1995.

IIT Guwahati has good infrastructure for carrying out advanced research and has been equipped with state-of-the-art scientific and engineering instruments and recently IIT Guwahati has been ranked among the top 100 of the world's dynamic young universities by Times Higher Education (THE) magazine also.

Indian Institute of Technology Guwahati's campus is on a sprawling 285 hectares plot of land on the north bank of the river Brahmaputra around 20 kms. from the heart of the city. With the majestic Brahmaputra on one side, and with hills and vast open spaces on others. No doubt its the most beautiful IIT among all


Councelling


There was a pannel of 5-6 professors who all were calling the applicants according to their application no. They were checking all marksheets the till Final/Pre-final Semester. Also our 10th and 12th DMC was required and further I just submit my Demamd draft of Rs.150 along with a passport size photograph and I was done for the day.

The first list was declared after two days and the second list after five more days.

Do wait till the final list because many applicants just reserve their seats till they get any other seat at preffered IIT and later on they withdraw. There is a good chances of selection till AIR 275 at IITG


In 2014
First and Second list was declared till Gate score: 802, AIR: 241

First List
Second List


My Trip



After the councelling I visted to Kamakhya temple, Alfresco Boat in the evening. Do check their timings before going there.

P.S: If you are a nature oriented person you will enjoy your visit to IITG.



    Bridge near IITG


    Kamakhya Temple

    
    View from Alfresco Grand Boat

-Nikita Jain

IIT Kharagpur

After IIT Delhi, the next institute to visit was IIT Kharagpur. IIT Kharagpur is the oldest IITs and considered as a very good institute for computer science.

Selection Criterion
IIT Kharagpur shortlisted the students based on GATE score and the shortlisted candidates were called for interviews at the institute. The cut off GATE score for CS at IIT Kharagpur was around 735 which was around 450-500 rank. There was no written round for IIT Kharagpur. The interview was scheduled on 19th, 20th May and those who had their interviews clashing with some other institutes, they could give interview on 17th May. I gave my interview on 17th May as I had M.Tech Computer Applications interview at IIT Delhi on 19th May.

About Course
The courses I applied for at IIT Kharagpur was M.Tech in CS and M.Tech in IT. There was only one interview for CS and IT.

Travel and Stay
Kharagpur is a small town and doesn’t has an airport, so I took a flight from Delhi to Kolkata. I reached Kolkata on 16th May and stayed at my friend’s house. The next morning at 6, I had a 1.5 hour train journey to Kharagpur, a journey that I can’t forget. 

We took a train from Howrah station to Kharagpur. The train moved smoothly for about an hour and then there was large sound of sparking and the train stopped at Haur station about 40 Km away from Kharagpur station. I was very afraid whether I would be able to make it for the interview or not. We waited for 15 minutes and then we got down from the train. The TC told us that the overhead line of the train had broken and it would take around 2-3 hours to fix it and get the train moving.

I couldn’t wait for 2-3 hours as I had to report for interview in 2 hours, so I decided to take a taxi or bus from there to Kharagpur. Haur was a small village. I couldn’t find any transport from station to Kharagpur. A nearby shopkeeper said he would arrange a taxi, we waited for it for about an hour but we didn’t get any taxi. I called the institute and informed them about the train breakdown and they said that there is no problem and interview will start late at about 10.

A family was going from the station to somewhere so I requested them to give me a lift to the highway so that I could get some transport from there. They gave me a lift and dropped me at the highway. I thought getting a bus or taxi would be easy from a highway, but I was wrong. There were 2 more people standing with me who got down from the same train to Kharagpur. I waited for some time, asking for lift from many people and then a bike came. All 3 of us got on to the bike and the biker took us about 3-4 Km ahead and dropped us at a bus stop.

I waited for about 15 minutes for bus but couldn’t find one. I asked for lift from many people and finally an ambulance stopped. YES an ambulance. Ambulance gave me a ride from the bus stop to a bus depot where I got a bus to Kharagpur railway station. I took an auto rickshaw from station to the institute. I reached the institute at around 11 am, the interview had not yet started. I marked my attendance and waited for my turn.

The institute had made arrangements for staying at hostels. I was there for only one day so didn’t need hostel.

The Institute
IIT Kharagpur has a large campus. There were many hostels. I saw LBS hostel. It was a new hostel and was better compared to Kanpur and Madras hostels. The hostel rooms were on sharing basis, 3 people shared one room. The room had enough space for 3 people. there were 3 beds, cupboards , study tables, balcony.

The Interview
There was a lot of mismanagement at interviews as they had not expected so many candidates would turn up on 17th. Most of the candidates had IIT Delhi or IIT Bombay scheduled on 19th May so there were many who had come on 17th May. 

My interview started at around 2 pm. There were 2 people taking my interview. They started by asking me my favorite subjects, to which I replied Data Structures, Algorithms and DBMS. They sent me to white board and asked me to explain on the white board. He asked me questions about sorting. Which is the sorting algorithm I would prefer (heap sort), why would I prefer this. The time complexity of heap, merge, quick sort, which out of these is the best and why. If both heap and merge have same time complexity why I chose heap. How we calculate different time complexities i.e. average, best and worst case. I answered all these correctly.

After this he asked me questions from TOC. He focused on finite automata. He asked me how to find complement of the language, give an example. And conversion from NFA to DFA etc. To these also I answered properly.

Now they came to engineering maths, they asked me about vectors, basis, vector space most of which I did not knew. Then they switched to operating systems and asked me about system calls, how they are made, when are they made, examples of system calls, how they are implemented, what is difference between normal function call and a system call. I had minimum idea about system calls so this also did not went well.

The interview lasted for about 20 minutes and I was free at about 3 pm. We had lunch at dreamland restaurant in the campus and then I went to see hostels.  I left for Kolkata around 4 pm.

My Trip
I really enjoyed my trip to Kharagpur. I enjoyed the awesome journey from Howrah to Kharagpur. Later that evening we went to a floating hotel Floatel, floating in the Hooghly River. Next day I left for Delhi.

Selection
The result of the interview was announced about 3 weeks after the interview. I got selected for IT and I took admission here.I may have been upgraded to CS but I withdrew admission from here and took admission at IIT Delhi in Computer Applications program.