Programmer Screening Questionnaire

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Email *

What is your name?
Your exact name is required to contact you through the platforms *

On which platform you saw our job post? *

Fiverr

Upwork

Cryptojob

MetaZ Website

What is your country of residence? *

What is the decimal value of the hexadecimal value 11? *

What is the memory size occupied by a variable with a value of -1 on a 32-bit computer if a variable with the value of 1 occupies 4 bytes of memory? *

2 bytes

16 bits

32 bits

8 bytes

Either 2 bytes or 16 bits

What is similar to a string? *

A set

An array

An unsigned integer

An integer

An integer or unsigned integer

How can we correctly determine if two floating point variables are equal? *

See if a == b is true

Check if a - b == 0 is true

Check if ((a-b)*(a-b))/(a*a + b*b) is close to or is zero

Check a*b == a*a is true

None of the above

What is the correct way to calculate the distance between the points (x1, y1) and (x2, y2)? *

pow((y2-y1)*(x2-x1)+(x2-x1)*(y2-y1), 0.5)

pow(x1-x2, 2) + pow(y1-y2, 2)

pow((x1-x2)*(x1-x2)+(y2-y1)*(y2-y1), 0.5)

sqrt((x2-x1)*2 + (y2-x1)*2)

pow(x2-x1, 2) +pow(y2-y1, 2)

What is the most significant similarity between the file I/O and network I/O? *

They read data as bytes instead of as strings

They are the only ways to read an image file

The functions to do them are similarly named

They read data

They read data via a stream

What would happen if the negative value of a signed integer is (unsafely) cast to the unsigned integer type? *

The value would be greater than the maximum signed integer

The cast would fail because it's an undefined behavior

The value would be zero

It would be a random number since the value will be garbled

The cast would fail because of the stack overflow

Pick a correct statement about UTF-8 *

UTF-32 can represent more characters than UTF-8

ASCII characters cannot be encoded as UTF-8

UTF-8 requires more computation than UTF-32

UTF-16 is a superset of UTF-8

Chinese, Japanese and Korean characters cannot be encoded as UTF-8

What is the first thing among the following a browser would do when a user tries to open a webpage? *

Sending an HTTP GET request

Parsing the URL

Resolving the domain

Downloading the page

Doing the handshake with the server for TLS

What makes the least sense if it were to be done on a single-core CPU? *

Read a single file by chunks in multiple threads

Start multi-threaded connections to servers to download multiple files

Traverse every pixel of an image by the width and height

Write to a network file descriptor

Start multiple threads to compute the sum of an array of numbers multiplied by a constant value

How is an array different from a set? *

An array can have duplicates while a set cannot

A set is immutable

They are identical, a set is just a convenient method to allow mathematical operations

Random access is only available on sets

Iterating is more expensive on arrays than on sets

What is most similar to a switch statement? *

A dictionary with function pointers as values

A ternary operator

A for loop

An array with function pointers as values

A while loop

What is most important when calculating a ratio? *

Check if a signed value is being divided by an unsigned integer

Check if the denominator is zero

Check if either the denominator or the numerator is a floating point value

Check if an unsigned value is being divided by a floating point value

Check if the denominator and numerator are the same

What is an overlay network of what? *

IP is an overlay network of HTTP

HTTP is an overlay network of TCP

UDP is an overlay network of TCP

UDP is an overlay network of HTTP

TCP is an overlay network of HTTP

What would be the least sensible way of joining in SQL? *

Join subquery results from a table with another table on its primary key column

Join two tables on an indexed column of one table and a primary key column of the other

Join two tables on primary keys along with WHERE

Join two tables on primary keys

Join two tables on indexed columns

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