MCQOPTIONS
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MCQOPTIONS
This section includes 713 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science Engineering (CSE) knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The Unix slang for " #! " is |
| A. | hash-bang |
| B. | shboom |
| C. | shebang |
| D. | more than one of the above |
| Answer» E. | |
| 152. |
Examples of repetitive tasks performed by system administrators |
| A. | disk space inventories |
| B. | security audits |
| C. | system backups |
| D. | all of the above |
| Answer» E. | |
| 153. |
The name of the Unix scheduling utility is |
| A. | sched |
| B. | cron |
| C. | sc |
| D. | timer |
| Answer» C. sc | |
| 154. |
What is default administrator username ? |
| A. | administrator |
| B. | admin |
| C. | superuser |
| D. | root |
| Answer» E. | |
| 155. |
What are the files attributes for executing perl programs ? |
| A. | 666 |
| B. | 755 |
| C. | 766 |
| D. | 777 |
| Answer» C. 766 | |
| 156. |
Which of the following creates a file named file1 ? |
| A. | cat file1 |
| B. | cat > file1 |
| C. | cat < file1 |
| D. | cat |
| Answer» C. cat < file1 | |
| 157. |
Which of the following display content of file1 ? |
| A. | cat file1 |
| B. | cat > file1 |
| C. | cat >> file2 |
| D. | cat |
| Answer» B. cat > file1 | |
| 158. |
How do you find your own username ? |
| A. | who |
| B. | user |
| C. | whoami |
| D. | root |
| Answer» D. root | |
| 159. |
How do you remove a file ? |
| A. | del |
| B. | rm |
| C. | cd |
| D. | rmdir |
| Answer» C. cd | |
| 160. |
Which command is used to debug a shell script program ? |
| A. | set |
| B. | set -x |
| C. | debug |
| D. | db |
| Answer» C. debug | |
| 161. |
Which variable contains current shell process id ? |
| A. | $* |
| B. | $? |
| C. | $$ |
| D. | $! |
| Answer» D. $! | |
| 162. |
How do you find current directory you are in ? |
| A. | cd |
| B. | pwd |
| C. | chdir |
| D. | mkdir |
| Answer» C. chdir | |
| 163. |
What's the command to find out users on the system ? |
| A. | who |
| B. | whoami |
| C. | user |
| D. | pwd |
| Answer» B. whoami | |
| 164. |
How do you find out what's your shell ? |
| A. | echo $shell |
| B. | echo $shell |
| C. | echo $shell |
| D. | echo shell |
| Answer» B. echo $shell | |
| 165. |
Which of the following is not a valid data type in python ? |
| A. | int |
| B. | float |
| C. | double |
| D. | str |
| Answer» D. str | |
| 166. |
Which of following language does not requires declarations ? |
| A. | java |
| B. | c++ |
| C. | python |
| D. | vb.net |
| Answer» D. vb.net | |
| 167. |
What is command to find out todays date ? |
| A. | time |
| B. | date |
| C. | cal |
| D. | cd |
| Answer» C. cal | |
| 168. |
Which of the following language has an IF statement for making decision ? |
| A. | perl chomp function will |
| B. | c++ |
| C. | python |
| D. | all of these |
| Answer» E. | |
| 169. |
Which of the following procedure a true or false result ? |
| A. | control structure |
| B. | strong typing |
| C. | data types |
| D. | boolean express |
| Answer» E. | |
| 170. |
which of the following translate and execute programe statements in sequence, instead of having separate translation and execution steps ? |
| A. | procedure |
| B. | interpreter |
| C. | paradigm |
| D. | compiler |
| Answer» C. paradigm | |
| 171. |
In python, multi line string are given by |
| A. | single quotes |
| B. | double quotes |
| C. | triple quotes |
| D. | none of the above |
| Answer» D. none of the above | |
| 172. |
python source code file has an extension of |
| A. | pys |
| B. | py |
| C. | src |
| D. | none of the above |
| Answer» C. src | |
| 173. |
"**" in python is an |
| A. | exponentiation |
| B. | address of |
| C. | value redirection |
| D. | none of the above |
| Answer» B. address of | |
| 174. |
"//" in pyhon is |
| A. | floor division operator |
| B. | comment |
| C. | new line |
| D. | none of the above |
| Answer» B. comment | |
| 175. |
In python, the list L contains the following elements : ['A', 1,'1','George']. Which of the following ways of slicing would assign only the first two elements to the variable X ? |
| A. | l[1:2] |
| B. | x=l[0:1] |
| C. | x=[l[0:2] |
| D. | none of the above |
| Answer» D. none of the above | |
| 176. |
What is python ? |
| A. | it is object oriented programming language |
| B. | it is software package |
| C. | it is intrpreter |
| D. | it is assembly language |
| Answer» B. it is software package | |
| 177. |
Default file accessed through a print statement in perl is |
| A. | stdin |
| B. | stdout |
| C. | stderr |
| D. | all of these |
| Answer» C. stderr | |
| 178. |
Which of the following statements is NOT TRUE statements ? |
| A. | perl chomp function will not remove all whitespace characters by default |
| B. | perl chomp function returns the number of characters removed |
| C. | perl chomp function checks whether the last character matches the input line separator and only then it deletes it. |
| D. | it deletes the last ending varibale character regardless of whatever it is. |
| Answer» E. | |
| 179. |
Perl uses this operator for |
| A. | equal |
| B. | comparision |
| C. | less than or equal |
| D. | greater than and equal |
| Answer» C. less than or equal | |
| 180. |
The logical operator op1 && op2 means |
| A. | performs a logical not of the operand |
| B. | performs a logical or of the two operands |
| C. | performs a logical and of the two operands |
| D. | performs alogical and then or of the two operands |
| Answer» D. performs alogical and then or of the two operands | |
| 181. |
An array, in perl, is an |
| A. | un-ordered list of scalar data |
| B. | ordered list of scalar data |
| C. | ordered list of numbers |
| D. | none of the above |
| Answer» C. ordered list of numbers | |
| 182. |
comments are placed inside a perl program file using the character |
| A. | @ |
| B. | % |
| C. | $ |
| D. | # |
| Answer» E. | |
| 183. |
which is escape character in perl ? |
| A. | // |
| B. | ! |
| C. | \\ |
| D. | | |
| Answer» D. | | |
| 184. |
What is the extension of the perl file ? |
| A. | .p |
| B. | .pl |
| C. | .perl |
| D. | .pe |
| Answer» C. .perl | |
| 185. |
Perl is scripting language which is based on |
| A. | inerpreter |
| B. | compiler |
| C. | assembler |
| D. | all of the above |
| Answer» B. compiler | |
| 186. |
Perl define scalar variable by |
| A. | @ |
| B. | % |
| C. | $ |
| D. | # |
| Answer» D. # | |
| 187. |
Which of the following expression operators increments a varibale by one ? |
| A. | .. |
| B. | . |
| C. | ** |
| D. | * |
| Answer» C. ** | |
| 188. |
Scalar variables |
| A. | include string exclusively |
| B. | are defied two discrete values |
| C. | are the building blocks of more complicated data structure |
| D. | always operate in the same manner as variable in algebric function |
| Answer» D. always operate in the same manner as variable in algebric function | |
| 189. |
STDIN, or standard in, is a mechanism for |
| A. | performing type conversion automatically |
| B. | retrieving data from the user while a script is executing |
| C. | prompting the user for specific information |
| D. | outputting a string to standard out |
| Answer» C. prompting the user for specific information | |
| 190. |
Which of the following is true of all Perl scripts ? |
| A. | meta characters are always preceded by a forward slash |
| B. | perl statements are always followed by a period |
| C. | parameters must always followed by period |
| D. | perl statements are always followed by a semicolon |
| Answer» E. | |
| 191. |
What is the first line in every perl script that contains special instructions to the operating system ? |
| A. | the perl interpreter line |
| B. | the shebang line the perl statement |
| C. | the standard out line |
| D. | the perl statement |
| Answer» C. the standard out line | |
| 192. |
perl |
| A. | is an effective multi tasking langugae that requires a great deal of development time. |
| B. | is easy to learn and use, but awkward when dealing with compex tasks. |
| C. | is available in all major operating system, but is quite expensive |
| D. | can handle a variety of tasks involving large amounts of data with ease |
| Answer» E. | |
| 193. |
The print function |
| A. | retrives data from the user while a script is executing |
| B. | prompts the user for specific information |
| C. | modifies a string |
| D. | outputs a string to standard out |
| Answer» E. | |
| 194. |
Perl stands for |
| A. | practical extraction and report language |
| B. | practical extraction and ready language |
| C. | post expression and report language |
| D. | none of the above |
| Answer» B. practical extraction and ready language | |
| 195. |
You want to add files to a previously created tar file. You want to replace existing files with newer files, how can you do this ? |
| A. | use the append command |
| B. | use the tar command with the - t switch |
| C. | use the add command |
| D. | use the tar command with the -u switch |
| Answer» E. | |
| 196. |
You want to view a listing of previously enetered commands. What command would you use ? |
| A. | hist |
| B. | histfile |
| C. | showbuff |
| D. | history |
| Answer» E. | |
| 197. |
What is output of following perl program ? My $val='x'; print ref($val); |
| A. | scalar |
| B. | empty value |
| C. | string |
| D. | "not a reference" |
| Answer» C. string | |
| 198. |
You want to install lilo. Which of the following would you do to accomplish this ? |
| A. | lilo -u |
| B. | remove lilo |
| C. | uninstall lilo |
| D. | lilo -r |
| Answer» B. remove lilo | |
| 199. |
You want there to be 3 grace days after a password expires before an account becomes disabled. How would you do this ? |
| A. | use the useradd command with the -f switch |
| B. | check the delay option in user admin |
| C. | edit the user\s user.config file |
| D. | use the useradd command with the -d switch |
| Answer» B. check the delay option in user admin | |
| 200. |
What option can be used with shutdown command to send a warning message alerting users that the system will be shutdown ? |
| A. | shutdown -k |
| B. | shutdown -w |
| C. | shutdown -a |
| D. | shutdown -c |
| Answer» B. shutdown -w | |