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programming languages Online Quiz - 224

Description: programming languages Online Quiz - 224
Number of Questions: 20
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Tags: programming languages
Attempted 0/20 Correct 0 Score 0

Assume @list contains (“1”, “2”, “3”, “4”, “5” ). What is the content of @list after the following statement splice (@list, -1, 1, “test1”. “test2”);

  1. (“1”, “2”, “3”, “4”, “test1”, “test2”)

  2. ( “2”, “3”, “4”, “test1”, “test2”)

  3. (“1”, “3”, “4”, “test1”, “test2”)

  4. (“1”, “test1”, test2”, “2”, “3”, “4” )


Correct Option: A

What argument to splice is equivalent to push (@array, @sublist) function call?

  1. splice (@array,0.0.@sublist);

  2. splice (@array, scalar(@array),0, @sublist);

  3. splice (@array, 1, 0, @sublist);

  4. None


Correct Option: B

If $string contains abcdefgh , what will the following call return? substr($string, -2, 2);

  1. abc

  2. efgh

  3. gh

  4. None


Correct Option: C

If $string contains abcdabcd , what will the following call return? index ($string, “cd”, 3);

  1. 6

  2. 4

  3. -1

  4. 3


Correct Option: A

Which operator can be used to access the first item in an array?

  1. shift

  2. start

  3. right$

  4. left$


Correct Option: A

Which statement will print the capital attribute of the $kansas object?

  1. print ("capital"=>$kansas);

  2. print {$kansas}=>(capital);

  3. print (capital)<={$kansas};

  4. print $kansas->{"capital"};


Correct Option: D

Which function can be used to make sure your program exits with a nonzero status even if there a standard error?

  1. hash

  2. noexit

  3. nozero

  4. die


Correct Option: D
  1. //STEP1 EXEC PGM=IDCAMS //SYSPRINT DD SYSOUT=* //DD1 DD DSN=USERID.KSDS.BACKUP,DISP=SHR //SYSIN DD * IMPORT INFILE(DD1) OUTDATASET(USERID.TEST.VSAM) /*

  2. //STEP1 EXEC PGM=IDCAMS //SYSPRINT DD SYSOUT=* //DD1 DD DSN=USERID.KSDS.BACKUP,DISP=SHR //SYSIN DD * IMPORT INFILE(DD1) OUTFILE(USERID.TEST.VSAM) /*

  3. //STEP1 EXEC PGM=IDCAMS //SYSPRINT DD SYSOUT=* //DD1 DD DSN=USERID.KSDS.BACKUP,DISP=SHR //SYSIN DD * IMPORT INDATASET(DD1) OUTDATASET(USERID.TEST.VSAM) /*

  4. //STEP1 EXEC PGM=IDCAMS //SYSPRINT DD SYSOUT=* //DD1 DD DSN=USERID.KSDS.BACKUP,DISP=SHR //SYSIN DD * IMPORT INDATASET(DD1) OUTFILE(USERID.TEST.VSAM) /*


Correct Option: A
Explanation:

To understand the syntax of the OBJECT parameter, we need to understand what is IDCAMS. IDCAMS stands for Access Method Services, and it is used to access VSAM data sets. The IMPORT statement is used to copy records from one VSAM data set to another.

The syntax of the OBJECT parameter is as follows:

IMPORT INFILE(input_ddname) OUTDATASET(output_dsname)

Here, the input_ddname is the DD statement that defines the input data set, and output_dsname is the data set name of the output VSAM data set.

Now, let's go through each option and determine which one has the correct syntax for the OBJECT parameter:

A. This option has the correct syntax for the OBJECT parameter. The input data set is defined by DD1, and the output data set is defined by USERID.TEST.VSAM.

B. This option has an incorrect syntax for the OBJECT parameter. The parameter should be OUTDATASET instead of OUTFILE.

C. This option has an incorrect syntax for the OBJECT parameter. The parameter should be INFILE instead of INDATASET, and OUTDATASET should be used instead of OUTFILE.

D. This option has an incorrect syntax for the OBJECT parameter. The parameter should be INFILE instead of INDATASET.

Therefore, the correct answer is: The Answer is A.

Correct Syntax for RESTORE Statement

  1. //JOB1 JOB accounting information //STEP1 EXEC PGM=ADRDSSU //SYSPRINT DD SYSOUT=A //TAPE DD UNIT=3480,VOL=SER=(TAPE01,TAPE02), // LABEL=(1,SL),DISP=(OLD,

  2. //JOB1 JOB accounting information //STEP1 EXEC PGM=ADRDSSU //SYSPRINT DD SYSOUT=A //TAPE DD UNIT=3480,VOL=SER=(TAPE01,TAPE02), // LABEL=(1,SL),DISP=(OLD,

  3. //JOB1 JOB accounting information //STEP1 EXEC PGM=ADRDSSU //SYSPRINT DD SYSOUT=A //TAPE DD UNIT=3480,VOL=SER=(TAPE01,TAPE02), // LABEL=(1,SL),DISP=(OLD,

  4. //JOB1 JOB accounting information //STEP1 EXEC PGM=ADRDSSU //SYSPRINT DD SYSOUT=A //TAPE DD UNIT=3480,VOL=SER=(TAPE01,TAPE02), // LABEL=(1,SL),DISP=(OLD,


Correct Option: C

AI Explanation

To answer this question, we need to understand the syntax for the RESTORE statement.

The correct syntax for the RESTORE statement is as follows:

//STEP1 EXEC PGM=ADRDSSU //SYSPRINT DD SYSOUT=A //TAPE DD UNIT=3480,VOL=SER=(TAPE01,TAPE02), // LABEL=(1,SL),DISP=(OLD,

Option A) This option is incorrect because it is the same as Option C.

Option B) This option is incorrect because it is the same as Option C.

Option C) This option is correct because it follows the correct syntax for the RESTORE statement.

Option D) This option is incorrect because it is the same as Option C.

The correct answer is Option C.

Which of the following is not applicable in LIKE parameter?

  1. //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M

  2. //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M

  3. //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M

  4. //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG, //SAMPLE DDDSN=MYLIB


Correct Option: A

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M Option B) //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M Option C) //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M Option D) //TESTJOB JOB (ER456),‘XXXXX‘ //STEP1 EXEC PGM=IEFBR14 //SYSOUT DD SYSOUT=* //OUTPU1 DD DSN=MYLIB.TEST.GDG, //SAMPLE DDDSN=MYLIB

The LIKE parameter is used in JCL (Job Control Language) to create a new dataset that is similar to an existing dataset. It allows you to specify an existing dataset as a template for creating a new dataset with similar characteristics.

In this case, the correct answer is Option A. The LIKE parameter is not applicable in this option because there is no LIKE parameter specified in the DD statement:

//OUTPU1 DD DSN=MYLIB.TEST.GDG(+1), //SAMPLE DDDSN=M

Therefore, the correct answer is Option A.

Which of the following syntax is not correct?

  1. //STEP40 EXEC PGM=IDCAMS,REGION=2048K //SYSPRINT DD SYSOUT=* DEFINE CLUSTER (NAME(USERID.TEST.VSAM)- VOL(*)- TRK(1,2)- INDEXED- SPEED-

  2. //JSTY0020 EXEC PGM=IDCAMS,COND=(0,NE) //SYSOUT DD SYSOUT=* //SYSPRINT DD SYSOUT=* //SYSIN DD *

  3. //STEP20 EXEC PGM=IDCAMS,REGION=2048K //SYSPRINT DD SYSOUT=* DELETE USERID.TEST.VSAM' SET MAXCC = 0

  4. None of the above


Correct Option: B

Which is the correct syntax of DUMP Statement?

  1. DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre | SHR} } {SPHERE} {OUTDDname | ODD} (ddn {,ddn,...)

  2. DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre ¦ SHR} } {SPHERE} {OUTDDname ¦ ODD} (ddn {,ddn,...)

  3. DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre | SHR} } {SPHERE} {OUTDDname | EVEN} (ddn {,ddn,...)

  4. DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre ¦ SHR} } {SPHERE} {OUTDDname ¦ EVEN} (ddn {,ddn,...)


Correct Option: B

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre | SHR} } {SPHERE} {OUTDDname | ODD} (ddn {,ddn,...)

  • This option is incorrect because it uses the incorrect symbol "|" instead of "∥" for the OR operator, and it uses "ODD" instead of "ODD" for the OUTDDname parameter.

Option B) DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre ∥ SHR} } {SPHERE} {OUTDDname ∥ ODD} (ddn {,ddn,...)

  • This option is the correct answer because it uses the correct syntax for the DUMP statement. It uses "∥" for the OR operator, "SHAre ∥ SHR" to specify the sharing option, "SPHERE" to specify the dump format, and "OUTDDname ∥ ODD" to specify the output DDname parameter.

Option C) DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre | SHR} } {SPHERE} {OUTDDname | EVEN} (ddn {,ddn,...)

  • This option is incorrect because it uses "EVEN" instead of "ODD" for the OUTDDname parameter.

Option D) DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre ∥ SHR} } {SPHERE} {OUTDDname ∥ EVEN} (ddn {,ddn,...)

  • This option is incorrect because it uses "∥" for the OR operator and "EVEN" instead of "ODD" for the OUTDDname parameter.

The correct answer is B) DUMP DATASET | DS (INCLUDE(dsn,…) ALLData(dsn | (*)) ALLExcp | ALLX { {SHAre ∥ SHR} } {SPHERE} {OUTDDname ∥ ODD} (ddn {,ddn,...) because it uses the correct syntax for the DUMP statement.

The correct Syntax of a Bind Statement

  1. DSN SYSTEM(SSID) BIND PLAN(PLAN1) - MEMBER (PROGRAM1) - QUALIFIER(DB1) - ISOLATION(CS)

  2. DSN SYSTEM(SSID) - BIND PLAN(PLAN1) - MEMBER (PROGRAM1) - QUALIFIER(DB1) - ISOLATION(CS) -

  3. DSN SYSTEM(SSID) BIND PLAN(PLAN1) - MEMBER (PROGRAM1) - QUALIFIER(DB1) - ISOLATION(CS) -

  4. None of the above


Correct Option: A

AI Explanation

To answer this question, you need to understand the syntax of a Bind statement.

Option A) DSN SYSTEM(SSID) BIND PLAN(PLAN1) - MEMBER(PROGRAM1) - QUALIFIER(DB1) - ISOLATION(CS) - This option is the correct syntax of a Bind statement. The DSN statement specifies the subsystem identifier (SSID) and the BIND statement specifies the plan name (PLAN1). The MEMBER statement specifies the program name (PROGRAM1) and the QUALIFIER statement specifies the database qualifier (DB1). Finally, the ISOLATION statement specifies the isolation level (CS).

Option B) DSN SYSTEM(SSID) - BIND PLAN(PLAN1) - MEMBER(PROGRAM1) - QUALIFIER(DB1) - ISOLATION(CS) - This option is incorrect because it includes an extra hyphen at the end of the statement. The hyphen is used to continue the statement on the next line, but in this case, it is not necessary.

Option C) DSN SYSTEM(SSID) BIND PLAN(PLAN1) - MEMBER(PROGRAM1) - QUALIFIER(DB1) - ISOLATION(CS) - This option is incorrect because it does not include the hyphen to continue the statement on the next line. Without the hyphen, the statement is considered incomplete.

Option D) None of the above - This option is incorrect because option A is the correct syntax of a Bind statement.

Therefore, the correct answer is option A. This option is correct because it follows the correct syntax of a Bind statement.

  1. True

  2. False


Correct Option: B
Explanation:

To solve this question, the user needs to know the basic concept of signed data types.

A signed data type is a data type that can represent both positive and negative numbers. This type of data is represented using a sign bit, which indicates whether the number is positive or negative.

Now, let's go through each option and explain why it is right or wrong:

A. True: This option is incorrect. The number of non-zero positive values and negative values in a signed data type is not equal. In a signed data type, one bit is reserved for the sign, which means there is one less bit for the magnitude. As a result, the range of positive values is one less than the range of negative values. For example, in a signed 8-bit data type, the range of positive values is 0 to 127, while the range of negative values is -1 to -128.

B. False: This option is correct. A signed data type does not have an equal number of non-zero positive and negative values available. As explained above, the range of positive values is one less than the range of negative values in a signed data type.

Therefore, the answer is: B. False.

Choose the valid identifiers from those listed below.

  1. BigOlLongStringWithMeaninglessName

  2. $int

  3. bytes

  4. $1

  5. finalist


Correct Option: A,B,C,D,E

AI Explanation

To answer this question, we need to understand what identifiers are in programming.

Identifiers are names used to identify variables, functions, classes, or other programming elements in a program. They are user-defined and should follow certain rules and conventions.

Let's go through each option to determine if it is a valid identifier:

Option A) BigOlLongStringWithMeaninglessName - This option is a valid identifier because it follows the rules for identifiers. It starts with a letter, contains only letters, digits, or underscores, and has a meaningful name.

Option B) $int - This option is a valid identifier because it starts with a dollar sign and is followed by a letter. It is common to use a dollar sign in identifiers in certain programming languages.

Option C) bytes - This option is a valid identifier because it consists of letters only and has a meaningful name.

Option D) $1 - This option is a valid identifier because it starts with a dollar sign and is followed by a digit. However, it is generally recommended to avoid starting an identifier with a digit.

Option E) finalist - This option is a valid identifier because it consists of letters only and has a meaningful name.

Therefore, all the options (A, B, C, D, E) are valid identifiers.

  1. public static void main()

  2. public static void main(String arg[])

  3. public void main(String [] arg))

  4. public static void main(String[] args))

  5. public static int main(String [] arg))


Correct Option: B,D

If all three top-level elements occur in a source file, they must appear in which order?

  1. Imports, package declaration, classes

  2. Classes, imports, package declarations

  3. Package declaration must come first; order for imports and class definitions is not

  4. Package declaration, imports, classes

  5. Imports must come first; order for package declaration and class definitions is not


Correct Option: D

Consider the following line of code: int x[] == new int[25]; After execution, which statement or statements are true?

  1. x[24] is 0

  2. x[24] is undefined

  3. x[25] is 0

  4. x[0] is null

  5. x.length is 25


Correct Option: A,E

How can you force garbage collection of an object in Java?

  1. Garbage collection cannot be forced

  2. Call System.gc()

  3. Call System.gc(), passing in a reference to the object to be garbage-collected

  4. Call Runtime.gc()

  5. Set all references to the object to new values (null, for example)


Correct Option: A

What is the range of values that can be assigned to a variable of type byte?

  1. It depends on the underlying hardware

  2. 0 through 28–1

  3. 0 through 216–1

  4. –27 through 27–1

  5. –215 through 215–1


Correct Option: D
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