Author: Saswata Sarma

Saswata Sarma
Hey there I am using QA raabnits
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ERROR: Failed to resolve: androidx.test:runner:1.2.1 - got this error

I'm facing " ERROR: Failed to resolve: androidx.test:runner:1.2.1 " from app level build.gradle file. from [apcode language="xml"] androidTestImplementation 'androidx.test:runner:1.2.1' [/apcode]...

May 15, 2020 2
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Plugin with id 'com.google.gms.google-services' not found. - got this error

when I'm adding this snippet in app level gradle file apply plugin: 'com.google.gms.google-services' I am facing error "Plugin with id 'com.google.gms.google-services' not found." . Can you please...

May 15, 2020 2
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thanks a lot mukuldeep maiti

April 19, 2020 2
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April 19, 2020 10
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AttributeError: module 'cv2.face' has no attribute 'createLBPHFaceRecognizer'

I'm getting AttributeError: module 'cv2.face' has no attribute 'createLBPHFaceRecognizer' for the following code snippet. [apcode language="python"] import cv2 cascade = "haarcascade_frontalface_default.xml"...

April 19, 2020 2
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March 25, 2020 10
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splitting string by delimiter in python

Splitting a string using specified delimiter in python! I have a string like "hey_john!_it's_your_arena!" I want it to be printed as "hey john! it's your arena!" (without quotes) using python.

March 25, 2020 2
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protocol pairs can be used to send and retrieve e-mails

Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)? Β IMAP, POP3 SMTP, POP3 SMTP, MIME IMAP, SMTP

March 23, 2020 2
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MCQ on the B+ tree data structure used for creating an index of a relational database table

Which one of the following statements is NOT correct about the B+ tree data structure used for creating an index of a relational database table? Β B+ Tree is a height-balanced tree Β Non-leaf nodes...

March 23, 2020 2
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MCQ on database transaction schedules, computer science

Consider the following two statements about database transaction schedules: I. Strict two-phase locking protocol generates conflict serializable schedules that are also recoverable. II. Timestamp-ordering...

March 23, 2020 2
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Consider Z = X – Y, where X, Y and Z are all in sign-magnitude...

Consider Z = X – Y, where X, Y and Z are all in sign-magnitude form. X and Y are each represented in n bits. To avoid overflow, the representation of Z would require a minimum of: Β n bits n βˆ’...

March 23, 2020 2
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Decimal number to 2's complement representation

In 16-bit 2’s complement representation, the decimal number βˆ’28 is: 1111 1111 0001 1100 0000 0000 1110 0100 1111 1111 1110 0100 1000 0000 1110 0100

March 23, 2020 2
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MCQ on fully associative cache, computer architecture

A certain processor uses a fully associative cache of size 16 kB. The cache block size is 16 bytes. Assume that the main memory is byte-addressable and uses a 32-bit address. How many bits are required...

March 23, 2020 2
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MCQ on ACID properties of database transaction

which one of the following is NOT a part of the ACID properties of database transactions? Atomicity consistency isolation deadlock freedom

March 23, 2020 2
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question on superkey in relational schema with attributes and primary key, Database

which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key V, Y? VXYZ VWXZ VWXY VWXYZ

March 23, 2020 2
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February 2, 2020 10
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book to learn vector space

you will get a lot of video lectures on youtube. you can follow them. Better, I will suggest A book for linear algebra i.e. SCHAUM'S OUTLINE OF LINEAR ALGEBRA. This will cover more than just vector space....

February 1, 2020 5
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minimum number of switches needed to from this LAN | gate CS/IT question

Consider that 15 machines need to be connected in a LAN using 8-port Ethernet switches. Assume that these switches do not have any separate uplink ports. The minimum number of switches needed is__________.

January 22, 2020 2
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Output of this C program | question from cs/it gate papers

Consider the following C program: [apcode language="cpp"] #include <stdio.h> int main() { int a[] = {2, 4, 6, 8, 10}; int i, sum = 0, *b = a + 4; for (i = 0; i < 5; i++) sum = sum + (*b – i)...

January 22, 2020 2
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Output of this C program | question from cs/it gate papers

Consider the following C program: [apcode language="cpp"] #include <stdio.h> int main(){ float sum = 0.0, j = 1.0, i = 2.0; while (i/j > 0.0625){ j = j + j; sum = sum + i/j; printf("%f\n",...

January 22, 2020 2
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