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SpaceX is a private American company also known as Space Exploration Technologies Corp. It is headquartered in Hawthorne, California. It is founded in 2002 by Entrepreneur and CEO of the company, Elon Musk and currently has more than 6000 employees. SpaceX is famous for designing, manufacturing, and launching of advanced rockets and spacecraft. The main goal of the foundation of SpaceX was to reduce the cost of space transportation and enable people to live on other planets. SpaceX has successfully developed the Falcon launch family and dragon spacecraft family, and at present, both are working to deliver payloads into Earth Orbit.
Key people:
Key Products:
SpaceX is one of the great company to work. It has a unique mission where people work to become part of the great history. SpaceX provides a smooth environment to their employees. If anyone joins the SpaceX, then he/she got an opportunity to work with the best engineers in the US. SpaceX provides great facilities for their employees. The communication hierarchy is very simple. Any employee can communicate with other employees as well as managers or CEO for a valid purpose.
SpaceX provides two ways to work with their company, and there are several positions for which one can apply according to their skill-sets.
The two ways to get job in SpaceX:
For both job types candidate can apply online through the link https://www.spacex.com/careers. By this link, one can check and apply for the current opening and opportunities in SpaceX. Once you apply for SpaceX and if your resume got selected, they will start your recruitment process.
Once you applied for SpaceX, you might have to wait for the long time of 2-5 months approx. Sometimes, you also get a chance after 2-3 weeks, but the candidate has to be patient.
The recruitment process of SpaceX is very much different and it is one of the difficult recruitment processes. SpaceX has a very typical hiring strategy as they wanted one of the top talents across the world to work with them. The Whole process consists of several rounds and candidate has to give his best for every round. So, the candidate needs to prepare himself very well for the selection in SpaceX.
Following are the rounds which candidate need to go through for final selection.
#include
int main()
{
int x = 67,*m = &x;
int *n=m;
char *t=n;
printf("%c %d",*t, *n);
}
#include
int main() {
int b=5;
b = printf("Quiz On");
printf(" ");
printf("%d", b);
return 0;
}
#include
using namespace std;
int main()
{
char arr[11] = "Hello world";
cout << arr;
return 0;
}
#include
void main()
{
static int x;
if (x++ < 2)
{
main();
printf(" Hey ");
}
}
#include
int main()
{
int* p;
*p = 20;
printf("The value is = %d", *p);
return 0;
}
#include
#include
int main()
{
int *ptr;
ptr = (int *)malloc(sizeof(int)*5);
if (ptr == NULL)
printf("This is Null\n");
else
printf("This is Not Null");
}
void fun()
{
static int i = 15;
printf("%d ", ++i);
}
int main()
{
fun();
fun();
}
int main ()
{
int x = 10;
double y;
printf ("%d", sizeof (++x + y--));
printf (" %d ", x);
return 0;
}
#include
int main()
{
int arr[] = {10, 20, 30, 40, 50, 60};
int *p= (int*)(&arr+1);
printf("%d ", *(p-1) );
return 0;
}
#include
int * arr[10];
int main()
{
if(*(arr+4) == *(arr+8))
{
printf("Pointer array are equal");
}
else
{
printf("Pointer array are Not Equal");
}
return 0;
}
The technical questions of SpaceX are very tricky so, candidates must have a good knowledge of the position and related technologies, for which they have applied. As there are various face-to-face interview rounds so different interviewer can ask different types of questions. The types of questions can also vary as per different positions. SpaceX provides lots of career path for different roles.
A list of some interview questions with answers for the preparation of the interview.
Output:
sihT si gnisrever eht sdrow
The Red-black tree is a type of self-balancing binary search tree with the extra attribute, which is the colour of the node. Colour of the node can be red or black that's why it is called as a Red-black tree. These colour attributes are used in the tree so that tree remains balanced (approx.) while insertion or deletion of a new node with time complexity of O(log n).
It requires the following rules:
Output:
Input linked list 85 69 60 35 18 15 Reversed Linked list 15 18 35 60 69 85
The following is the list of sorting algorithm with their best and Worst case complexities:
Sorting Algorithms | Time complexity- best case | Time complexity worst case |
---|---|---|
Bubble Sort | O(N) | O(N^2) |
Selection Sort | O(N^2) | O(N^2) |
Insertion Sort | O(N) | O(N^2) |
Quick Sort | O(N log(N)) | O(N^2) |
Heap Sort | O(N log(N)) | O(N log(N)) |
Radix Sort | O(Nk) | O(Nk) |
Merge Sort | O(N log(N)) | O(N log(N)) |
A pure virtual function in C++ is a function which has declaration but does not have any implementation in the base class. It is declared with virtual keyword and assigned a value 0. The pure virtual function used in an abstract class. This is mainly a part of runtime polymorphism.
Syntax:
Example:
Output:
Area is %d 25
In C language, we use storage class to define the scope and lifetime of the variable. The register is reserved keyword storage class. It gives hint to the compiler to store the variable in the register of memory. We can use register keyword for fast access of variable.
Syntax:
When we convert an expression from one data type to another data type, it is called as typecasting.
A list of different types of type casting in C++:
The volatile keyword is a qualifier which is used with the variable at declaration, which tells the compiler that the value of the variable may be changed at any time, without taking any action.
Syntax:
C++ is an object-oriented language and its object-oriented concept totally depends on its classes and objects. The class and objects both are the co-related with each other.
Some primary differences between classes and objects are:
Class | Object |
---|---|
A class is a template, which creates objects. | Object is an instance of its class. |
A class only have logical existence. | An object has physical existence |
A class does not allocate memory at the time of creation | An object requires memory at the time of creation |
A class can be defined by keyword class followed by its name | An object is created by using the class name followed by the variable name. |
A class can be defined only once. | An object can be created as per requirement. |
Syntax: class Class_Name{ //data member // function member }; | Syntax: Class_Name Obejctrefvariable; |
We can solve this problem using traversing and binary searching on the array. The first array should be traversed and then apply binary search on the second array.
Syntax:
Reference and pointers are the approximately same concept, with some differences. Both concepts are used to have one variable which can access another variable.
Following are the main differences between both the concepts.
PID is defined as a Process Identification Number. PID is a unique identification number which is automatically allocated to a process at the time of creation, in an operating system. To find the PID of the process in Ubuntu, Linux we can use the pidof command.
TCP and UDP both are the transport layer protocols used for transmission of packets over the network. The primary difference between both the protocols are given below:
TCP | UDP |
---|---|
TCP is termed as Transmission control protocol | UDP is termed as User Datagram Protocol. |
TCP is Connection oriented protocol, which means it requires to acknowledge for each transmission. | UDP is a connectionless protocol, which means it does not require to acknowledge of sent datagrams. |
TCP is a reliable protocol for transmission | UDP is not a reliable protocol for transmission. |
TCP is slower than UDP as it ensures the arrival of data to destination | UDP is fast compared to TCP as it does not ensure the data arrival. |
The sequencing of data occurs in TCP | UDP does not have any sequencing of data. |
The lost packets will be resent by the TCP during a transmission. | The lost packets will not be sent again. |
TCP is mainly used where reliability and error-free transmission required. E.g., requesting a dynamic web page. | UDP is mainly used where speed is desired, and error-free transmission is not required. E.g., Online games. |
To raise an aircraft into the air a force is required which is equal to or greater than the force of gravity, such type of force is called lift. Lift acts in an upward direction opposite to the gravity force. Lift equation can be written by using the Bernoulli equation which is:
P+1/2 ?V2= Constant and continuity equation
?*A*V= Constant, so lift equation will be:
Where Cl = coefficient
? = density
V= velocity
A = Wing area.
A Null pointer has reserved value which shows that pointer is pointing to nothing or not a valid value. A Null pointer is mainly used to show the end of the list. A Null pointer can be useful for the following cases:
Syntax:
The size of any data type in C depends upon compiler implementation so, the minimum size for an integer for the 32-bit system should be 2 bytes, and it may be 4 bytes or 8 bytes or more depending on the compiler.
The answer to the above question will be different for each candidate. The interviewer wants a detailed explanation of the projects which have candidates have already performed. The Candidate needs to have a good knowledge for every project of the technology which he has used, a concept which he has used and even every small knowledge of the project is required.
Output:
10 8 12 5 4 Cycle exist in list-->true
Ans: For the above program, it's not possible to go to an infinite loop. Even if we define arr_size to a negative value, still it will not go for infinite value.
The weakest point of cantilever depends on by which material the cantilever is constructed, and the weakest point is usually the free end.
Reynold's number is a dimensionless quantity of fluid mechanics which is used to study the flow of a fluid. It determines the flow pattern of fluid in different fluid flow situations. It is useful in predicting the transition of flow pattern from laminar to turbulent flow. Reynold's number can be defined as the ratio of the inertia force to the viscous force within a liquid.
The Reynold's number can be given as:
Where,
?=density of fluid
u=velocity of fluid with respect to the object, ?= dynamic viscosity of the fluid
v=kinematics viscosity
Other questions which can be asked in SpaceX interview are following:
At SpaceX, there are various interview rounds, and many of those rounds contain technical and HR interview questions so, candidates need to be prepared in every round for technical questions as well as non-technical questions. The HR questions of SpaceX also very tricky, so candidates need to be very careful and prepare for these type of questions. There are some HR questions with best suitable answer, which can be asked in SpaceX interview.
If the interviewer asks this question that means, he is expecting a candidate with excellent communication skill so, answer this question with confidence and in a positive way.
One can answer this question by using the following approach:
"I will rate myself as 9/10 for my communication skill. I have taken 9 as I have always got compliments for my good communication skill and I am deducting 1 as there is always a way for improvement."
As SpaceX is well known for its long working hours so, it's very mandatory that candidate should have time management skills. It will be beneficial while doing work with SpaceX. So interviewer will ask this question so that they can judge whether you have that skill or not.
"Time management has always been an essential part of my life. For obtaining the time management, I create a list of work, then I prioritize the work according to the urgency. I also fix the deadlines to complete the assigned task. After completion of one task, I use to check the complete list that is there any task which have more priority and if a new task has been added to the list."
For answering this question, you should be honest and tell what you think about SpaceX and what makes you excited to work at SpaceX.
See the following example:
"I want to work with SpaceX as I wanted to be a part of the company which makes history in the world so that I also can contribute a little bit of my knowledge towards the race to Mars, and SpaceX is one of those rare companies."
When an interviewer asks this question, they want to check how much serious you are for your career. So for answering this question, you should be very careful and try not to take the other companies name for which you have applied. Following is the example for this question.
"I have recently started searching for the job and also got the offer from some of the companies, but for this position in SpaceX, I was very much excited for a long time."
"When I get free from my work, I play badminton, and I also love to listen to music and reading novels."
"According to me success is feeling of maximum satisfaction and happiness, which you get from yourself after accomplishing a goal and if someone is completing his goals, that means he is getting success in his life."
SpaceX hires the best talent among lots of candidates, and if any of the interviewers will not satisfy with your answer, then the process stops immediately, so candidate should be cautious while answering this question. The interviewer wants to know that how much you think that you are suitable for that particular role. Candidate should respond by telling what different skill set or prior experience he has, which will be suitable for that role. One of the possible way to answers this question is:
"I have prior experience in aerospace technology, and also I have good theoretical and practical knowledge in space technology, with good communication skills and confidence which makes me most suitable for this role."
By this interviewer wants to check that how will you deal if you are a good team member but not agree with the leader, he wants to check whether you will handle it positively or negatively, so try to answer confidently and little bit diplomatically.
"Yes I believe, it might be a situation where my team leader and I do not have same thoughts, but still I will always put my thought with complete respect showing towards him as he is our leader and try to come at a point to apply that decision which is beneficial for everyone."
If you have various gaps during the employments, then it may be a tough question for you. But while answering this, you must be honest as if you will lie you can be caught, so whatever was the reason, clearly specify that reason.
"The main reason for these gaps was to get hired in the best company. Although I got various offers during the job search, still I wanted to join the best among those so that I can work for them for a long time".
This is the favourite question for most of the interviews and same for SpaceX. This is the most asked question because by this question, interviewer checks what your mindset is and what things motivate you in your life. As everyone has someone who motivates and inspire him so this is an easy question, and you can answer impressively. There is an example for this question:
"My inspiration of the life is Mr. APJ Abdul Kalam. From my childhood, my father used to tell me about him, since that time I was very inspired by him. I got inspired not only by his skills and knowledge but also by his personality and his noble thoughts. He was one of the great Indian scientists with an extraordinary character. He has faced lots of challenges in his life but never left moving, which really motivates me never to give up. Whenever I think that I can't do anything I just read some great thoughts written by him and again get a power to do things in a new way and with new energy."
As we know that SpaceX is well known for its long working hours so, before hiring any candidate, HR manager will ensure that whether a candidate is suitable for the environment or not. So before going for SpaceX one should be mentally and physically prepare for working for long hours.
"As I have great time management skills, which will help me to keep a balance between my life and work. I always try to do work as per their priority. And if you love your work, then time duration will not produce any restriction."
The interviewer would like to know your goal setting and reaching criteria. Every hiring manager wants to hire a candidate with a vision. So by telling achievement, candidate can tell them what their goal achieving capability is.
"I have won the award for the innovative employee of the month in my last company. We have given a project, which was needed great innovation for the accomplishment of that project, and I decided to be the leader for that, and I with my team have successfully completed that project, and also that was one the of the best project of the company."
The interviewer wants to check your leadership qualities and thinking capability by this question. This is the quality which makes you different from others and also opens a door for some new opportunity in the future. This should be answered in a very innovative way. One of the possible answers to this question is following.
"If I get a chance to inspire or encourage ideas in others, then I will encourage other people to be creative for their work and will make a platform on which they can present their ideas, and I will also praise for their efforts publicly, which will motivate them and inspire others."
Confidentiality is very important rule for SpaceX, so interviewer will ensure whether you are ready to follow such type of rules or not. So before answering this question, candidate should ensure themselves to follow these rules. Candidate can answer this question in following way:
"As I am very loyal for my work so, I will also be loyal for my employer, and if I get hired, I will surely sign a confidential agreement with SpaceX without any trouble."
This is the little tricky question as by this interviewer will check your career goals and how long you want to go in your career. This question can be answered by telling about your achievements and further goals.
Before applying for any company, you must have a deep search for the company only then you can answer this, by this question interviewer want to know that how much you know about the company, what are their specialities which makes them different and more powerful than others.
"As SpaceX has a very different vision of creating the spacecraft more efficient with less cost, and SpaceX is preparing a tour for people to the Mars, and the SpaceX has the world['s best talent which is like armed force which is prepared to do their best. All these things makes SpaceX more powerful than others."
When we started to apply for such a big company, we must have a vision and also something which generates enthusiasm and motivation to work with such companies. Everyone has some vision which generates interest to work with the SpaceX. This can be answered by following way:
"When I was a kid, I always being very excited when I heard about galaxies, planets, and astronauts. This excitement got increased day by day, and I started to search about those things on internet. After my Intermediate I did engineering with astronomy, and then I heard about SpaceX, at that time only I decided to work with SpaceX, and now I am here to live my dream."
By above question, interviewer wants to know how efficiently you can perform a given task and what your approach for doing a task is. By answering this question in unique way candidate can impact a good impression.
"My work Strategy for doing any task is little bit different, I prefer to do work by enjoying it, which increases my efficiency. Firstly, I prioritize the tasks and start doing task with one by one, if I face any issue in some task even after I tried my best for that then I take some rest and think about what is exactly the issue after finding the solution, I restart my work and do it in more efficient way. I set a goal for every task with time duration and always try to achieve that goal before the completion of time."
"If I would have a choice I would select a task for last, which will require more time but not require much energy and knowledge."
Nowadays, every company has such policy of background verification, to ensure that there should not be any criminal background and all the required documents are correct or not. And to comply with this is not an issue.
"Sure, I will comply for background verification, and I think this is also required for every company to know about their employees, to who they hire, and I don't have any issue with this."
Some other questions generally asked in SpaceX interview:
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