Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

The libfunctionsview command shows the signature of the functions present in the ___________(a) pre-loaded library(b) any library(c) Java library(d) Not presentI got this question in a job interview.Origin of the question is Calling External Functions topic in section Advanced Software Development of MATLAB

Answer»

The correct choice is (a) pre-loaded library

Best EXPLANATION: The libfunctionsview COMMAND works only on a library that has been pre-loaded into MATLAB with the loadlbrary() command.
Discussion
2.

The amount of memory saved for swap files is more than the physical memory allotted for MATLAB.(a) True(b) FalseThe question was posed to me in an online quiz.My question comes from Performance and Memory in division Advanced Software Development of MATLAB

Answer» RIGHT choice is (b) False

To ELABORATE: The latter is always greater than the former. This is because the PHYSICAL MEMORY is getting used up during operations.
Discussion
3.

How can we check the history of commands used?(a) By only clicking the up direction button(b) Using the commandhist command(c) Using the commandhistory command(d) Using the cmdhstry commandI got this question in semester exam.The origin of the question is System Commands topic in portion Advanced Software Development of MATLAB

Answer»

The correct answer is (c) Using the commandhistory command

The explanation is: It is not that we can check the history of the COMMANDS used, only, by clicking the upward DIRECTION button. It can be also checked by using the commandhistory function. HENCE, using the commandhistory command is correct.
Discussion
4.

The input to the system command is not necessarily given within ‘’.(a) True(b) FalseI had been asked this question in an international level competition.This intriguing question comes from System Commands in chapter Advanced Software Development of MATLAB

Answer»

Correct OPTION is (b) False

Best explanation: The INPUT to the SYSTEM() command has to be within ‘’. This is because the input has to be a command NAME and the command name is a string.
Discussion
5.

If the command, given as an input to the system command, gets executed, MATLAB returns a _________(a) 0(b) 1(c) True(d) FalseThis question was addressed to me during an interview.My doubt stems from System Commands topic in section Advanced Software Development of MATLAB

Answer»

Right choice is (a) 0

The best explanation: This the default return value of the system COMMAND. It will return a 0 if the command GETS successfully executed. If not, it’ll return 1 and HENCE, only MATLAB will only return a 0.
Discussion
6.

Python commands can be run in MATLAB without Python in the system.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.The doubt is from Calling External Functions topic in portion Advanced Software Development of MATLAB

Answer»

The correct OPTION is (B) False

For explanation: A VERSION of C PYTHON is required to be present in the SYSTEM for python commands to run. Hence, the above statement is false.
Discussion
7.

The callib command implements the function from a _________(a) library loaded by the loadlibrary() command(b) .h file loaded by the loadlibrary() command(c) c-file loaded by the loadlibrary() command(d) function loaded by the loadlibrary() commandI have been asked this question at a job interview.My doubt is from Calling External Functions topic in portion Advanced Software Development of MATLAB

Answer»

Correct CHOICE is (a) library LOADED by the loadlibrary() command

Explanation: The callib command is defined in MATLAB to use a function which is in a pre-loaded C library. The function can be CALLED by giving the function name and the ARGUMENTS as an INPUT to the callib command.
Discussion
8.

A .mltbx toolbox is written in Java.(a) True(b) FalseThe question was posed to me in an online interview.My question is from Toolbox Distribution topic in chapter Advanced Software Development of MATLAB

Answer»

The correct answer is (B) False

The BEST I can explain: A .mltbx TOOLBOX is a toolbox which is written in the MATLAB environment only. Hence, the above STATEMENT is false.
Discussion
9.

The clipboard function cannot work without(a) Python(b) C(c) JAVA(d) Not present in MATLABI had been asked this question during an interview.My enquiry is from System Commands in portion Advanced Software Development of MATLAB

Answer»

The CORRECT option is (c) JAVA

Explanation: The command has been designed in MATLAB such that it won’t work in a SYSTEM where the JAVA Oracle SOFTWARE is not present. Hence, the only correct option is JAVA.
Discussion
10.

The input to the unix command should be within _________(a) ()(b) {}(c) [](d) Is not available in MATLABI got this question in an online interview.I need to ask this question from System Commands topic in chapter Advanced Software Development of MATLAB

Answer» RIGHT option is (a) ()

Easiest EXPLANATION: The unix command is defined in MATLAB to run unix based CODES. The INPUT to this command should always be within parentheses. Thus only () is ALLOWED.
Discussion
11.

What are the contents of the toolbox shown by the matlab.addons.toolbox.installedToolboxes command?(a) Name, Guid(b) Name, Version, Guid(c) Name, package, Guid(d) Name, package,This question was addressed to me in examination.My question is taken from Toolbox Distribution in chapter Advanced Software Development of MATLAB

Answer»

The correct option is (b) Name, VERSION, Guid

To EXPLAIN: The GIVEN command RETURNS the properties of the installed toolbox, given by option name, version, guid. The guid is the toolbox identifier.
Discussion
12.

Python files cannot be used in MATLAB.(a) True(b) FalseI had been asked this question in examination.This intriguing question originated from Calling External Functions topic in section Advanced Software Development of MATLAB

Answer»

Right answer is (B) False

For explanation I would say: PYTHON files can be used in MATLAB.Python commands cannot RUN in MATLAB without Python in the system.
Discussion
13.

The isjava command returns?(a) 1 if the input is a java file(b) 1 if the input is not a java object(c) 1 if the input is a java object(d) 0 if the input is a java objectThe question was posed to me by my school principal while I was bunking the class.I want to ask this question from Calling External Functions topic in division Advanced Software Development of MATLAB

Answer»

Correct option is (c) 1 if the input is a java object

To EXPLAIN I would SAY: The isjava command will RETURN a 1 if the input to the command is a java object. It would return a 0 otherwise.
Discussion
14.

Which of the following command unloads a library from the system?(a) unldlibrary()(b) unloadlibrary()(c) unloadlibrary{}(d) unldlibrary[]This question was addressed to me in a job interview.The origin of the question is Calling External Functions topic in chapter Advanced Software Development of MATLAB

Answer»

Correct option is (b) unloadlibrary()

EXPLANATION: The correct command to UNLOAD a LIBRARY is unloadlibrary(). It is SYNTACTICALLY correct and no misspelling.
Discussion
15.

All system commands take input within parentheses.(a) True(b) FalseThis question was posed to me during an online exam.My question is from System Commands in chapter Advanced Software Development of MATLAB

Answer»

Right choice is (a) True

To elaborate: There isn’t a single system command in MATLAB which TAKES input WITHIN anything but PARENTHESES. Hence, the above STATEMENT is true.
Discussion
16.

What is the extension of a newly created toolbox?(a) .mltbx(b) .mlx(c) .tlx(d) .tbxI had been asked this question in an online interview.This intriguing question comes from Toolbox Distribution topic in division Advanced Software Development of MATLAB

Answer»

The correct option is (a) .mltbx

Explanation: A MATLAB Toolbox has the extension .mltbx. This is CREATED when we produce a toolbox which is defined by the USER.
Discussion
17.

The input to the isjava command is given within _________(a) ()(b) [](c) {}(d) Doesn’t existThe question was posed to me by my school principal while I was bunking the class.Query is from Calling External Functions in chapter Advanced Software Development of MATLAB

Answer»

Right choice is (a) ()

Explanation: The input to the isjava COMMAND should be given WITHIN PARENTHESES. It WOULD RETURN an error otherwise.
Discussion
18.

What is the function of the mexext command?(a) Reveals the version of the MEX file(b) Reveals the package in which the MEX file is stored(c) Returns the extension of the MEX file for the system(d) ErrorThe question was posed to me during a job interview.I'm obligated to ask this question of Calling External Functions topic in portion Advanced Software Development of MATLAB

Answer» CORRECT answer is (c) Returns the extension of the MEX file for the system

Easy EXPLANATION: The MEX file, generated in MATLAB will have an extension which DEPENDS on system configurations. Hence, the above code returns the extension of the MEX file when generated from the current system.
Discussion
19.

Windows Registry can be accessed by ___________(a) winqueryreg(b) winreg(c) windowsregistry(d) not possibleI got this question during a job interview.Query is from System Commands in chapter Advanced Software Development of MATLAB

Answer» CORRECT option is (a) winqueryreg

The EXPLANATION is: The correct command to gain ACCESS to the windows REGISTRY is winqueryreg. The rest of the commands don’t EXIST.
Discussion
20.

Which of the following method increases the performance of operation?(a) Preallocation(b) Postallocation(c) It’s not possible to increase performance(d) CharacterizationI got this question during an online exam.The query is from Performance and Memory topic in chapter Advanced Software Development of MATLAB

Answer»

The correct answer is (a) Preallocation

The best I can EXPLAIN: The METHOD of preallocation helps in increasing the performance of memory. It can be USED to specifically increase the speed of the OPERATION.
Discussion
21.

The timeit function returns the time in ms.(a) True(b) FalseThis question was posed to me in exam.This is a very interesting question from Performance and Memory in portion Advanced Software Development of MATLAB

Answer»

Right CHOICE is (a) True

For EXPLANATION I would say: The timeit function returns the time in seconds. HENCE, the above statement is FALSE.
Discussion
22.

The input to the function “matlab.addons.toolbox.toolboxVersion” is given within ______(a) Parentheses(b) {}(c) [](d) The function doesn’t existI have been asked this question during an internship interview.This key question is from Toolbox Distribution in section Advanced Software Development of MATLAB

Answer»

The correct choice is (a) Parentheses

The BEST I can EXPLAIN: The input to this FUNCTION is given WITHIN parentheses. This is pre-defined in MATLAB and hence, only option Parentheses is correct.
Discussion
23.

License arguments for installing toolboxes are _______(a) Ignored(b) Shown(c) Do not exist(d) Depends on the systemI had been asked this question in examination.Asked question is from Toolbox Distribution topic in section Advanced Software Development of MATLAB

Answer»

The CORRECT option is (b) Shown

Explanation: Irrespective of the system, a TOOLBOX has a license agreement within it- it will be prompted during INSTALLATION.
Discussion
24.

What does the function matlab.addons.toolbox.installedToolboxes return?(a) A structure(b) A table(c) A structure of arrays(d) An array of structureThis question was posed to me in an online interview.I would like to ask this question from Toolbox Distribution topic in section Advanced Software Development of MATLAB

Answer»

Right answer is (c) A STRUCTURE of arrays

The BEST explanation: The above command returns a structure of arrays which are the NAME, VERSION and Guide of the toolboxes installed in the system. It can be converted to array form and then viewed properly.
Discussion
25.

The tick command starts a timer.(a) True(b) FalseI had been asked this question in a national level competition.Query is from Performance and Memory topic in section Advanced Software Development of MATLAB

Answer»

The correct choice is (B) False

The EXPLANATION is: The COMMAND is MISSPELLED. The correct command is TIC only. Hence, the above statement is false.
Discussion
26.

The memory used by MATLAB, shown in the output of the memory command, is ________(a) The total system memory allotted to MATLAB(b) The total physical memory allotted to MATLAB(c) The total space for only mathematical operations in MATLAB(d) The temporary storage allotted to MATLABThis question was addressed to me in exam.Enquiry is from Performance and Memory topic in section Advanced Software Development of MATLAB

Answer»

The correct answer is (a) The TOTAL SYSTEM MEMORY ALLOTTED to MATLAB

Easy EXPLANATION: The memory function shows the total system memory allotted by MATLAB. It is the sum of the physical memory and potential swap file usage in the system.
Discussion
27.

The isobject(A) returns a 1 if the _________(a) A is a MATLAB class(b) A is a JAVA class(c) A is a C file(d) A is not a MATLAB classI have been asked this question in a job interview.I would like to ask this question from Calling External Functions topic in portion Advanced Software Development of MATLAB

Answer»

Right option is (a) A is a MATLAB class

The best explanation: The above COMMAND CHECKS if the input GIVEN to it belongs to the MATLAB class. If it’s so, it’ll return a 1- else it’ll return a 0.
Discussion
28.

A toolbox is same as a function.(a) True(b) FalseI got this question by my college director while I was bunking the class.My question comes from Toolbox Distribution topic in chapter Advanced Software Development of MATLAB

Answer»

Correct option is (b) False

Easy explanation: A TOOLBOX has a MULTITUDE of FUNCTION. It itself is not a function. It can be thoughtof as a HEADER file.
Discussion
29.

Which of the following command can be used for DOS commands?(a) msdos(b) dos(c) ds(d) not possible in MATLABThis question was posed to me by my school principal while I was bunking the class.This intriguing question comes from System Commands topic in section Advanced Software Development of MATLAB

Answer»

The CORRECT option is (b) dos

The best I can EXPLAIN: The correct command to work on DOS commands is dos in MATLAB. This is because it is pre-defined in the LIBRARIES of MATLAB.
Discussion
30.

The function handle given to the timeit command cannot be defined within the timeit function.(a) True(b) FalseThis question was addressed to me in examination.The origin of the question is Performance and Memory in portion Advanced Software Development of MATLAB

Answer»

Correct choice is (b) False

To EXPLAIN I WOULD say: The FUNCTION handle can be given as an input to the TIMEIT() command. It’s not necessary that we need a separate variable to declare a function handle.
Discussion
31.

The memory function is limited to _________(a) MS systems(b) Linux Systems(c) No system(d) Does not existI had been asked this question in exam.This interesting question is from Performance and Memory in chapter Advanced Software Development of MATLAB

Answer»

Correct answer is (a) MS SYSTEMS

Explanation: Typically, the MEMORY function is present in MATLAB but is LIMITED to the Microsoft Windows System. Hence, MS systems are correct.
Discussion