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Some Cobol Interview Questions

 
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jos.samuel

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Joined: 10 Mar 2005
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PostPosted: Thu Mar 10, 2005 6:00 pm    Post subject: Some Cobol Interview Questions
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Hello I am Samuel I have some doubts in cobol questions which i have posted, i need answer urgently reply soon.

1.Observe the following statements concerning READ statement : Identify
the TRUE statement :
a) AT END clause is not applicable to INDEXED files.
b) AT END NEXT SENTENCE is not allowed.
c) File must be open in the OUTPUT or I-O mode at the time READ is
executed.
d) READ NEXT is allowed only for DYNAMIC access.


2. Which of the foll. is an INCORRECT level number for a data-name?
a. 88 b. 13
c. 49 d. 01

3. What is the correct intrepretation of the statement
PERFORM PROCESS-THIS UNTIL MY-CONDITION
where the condition-name is defined as folls:
a. do the para PROCESS-THIS once if MY-VALUE has a value 1
b. keep repeating para PROCESS-THIS as long as MY-VALUE has a
value 1
c. keep repeating para PROCESS-THIS as long as MY-VALUE has a
value other than 1.
d. do the para PROCESS-THIS once if MY-VALUE has a value other
than 1.

4. A COBOL program when compiled gives an error at the Procedure
Division statement
ADD 10 TO COUNT-ITEMS
Which of the foll. situations could have caused the error?
a. COUNT-ITEMS has a PIC 999V9.
b. COUNT-ITEMS has a PIC ZZZ9.
c. COUNT-ITEMS is not initialised to zero anywhere in the
program
d. COUNT-ITEMS is declared in the FILE SECTION and not the
WORKING-STORAGE SECTION.

5. A programmer used the IF clause:
IF RANGE-1 AND NOT RANGE-2
to describe a condition. Another programmer described the same
condition by the IF clause
IF TALLY-GROUP = 6 OR 7 OR 10
If these two condition specifications are identical which of the
foll. declarations applies to the situation?
a.
01 TALLY-GROUP PIC 99.
88 RANGE-1 VALUES 6 THRU 10.
88 RANGE-2 VALUES 1 THRU 5.
b.
10 TALLY-GROUP PIC 99.
88 RANGE-1 VALUES 6, 7, 10.
(Range-2 is any condition-name assiciated with TALLY-GROUP)
c.
10 TALLY-GROUP PIC 99.
88 RANGE-1 VALUES 6 THRU 10.
88 RANGE-2 VALUES 8, 9.
d.
10 TALLY-GROUP PIC 99.
88 RANGE-1-AND-NOT-RANGE-2 VALUES 6, 7, 10.

6. In case of relative files, if RELATIVE KEY phrase is also specified
with ACCESS MODE SEQUENTIAL, what will be the result of READ ?

7 .The use of the INVALID KEY clause helps the programmer in :
a) checking whether the key field has the correct contents.
b) checking for a device error.
c) checking whether a specific file exists.
d) checking whether a specified record exists in a file.

8. Consider the following statements:
MOVE 10 TO XYZ
PERFORM PARA-1 XYZ TIMES.
.................
PARA-1.
.........
MOVE 20 TO XYZ
.........
Which of the following would happen ?
a. PARA-1 would be performed 10 times only.
b. PARA-1 would be performed 20 times.
c. PARA-1 would be performed 21 times.
d. Run-time error occurs and the program aborts.

9. Study the following :
RECORD-II.
DN-1.
0 DN-2 PIC X(12).
0 DN-2A PIC 9(8).
DN-1A REDEFINES DN-1.
0 DN-3A PIC XXXX.
0 DN-3 PIC 9(6).
0 DN-3B PIC X(10).
DN-5 PIC X(5).
DN-6 PIC 9(5).
State which of the following statements is correct
a. 66 DN-8 RENAMES DN-2 THRU DN-3.
b. 66 DN-8 RENAMES DN-2 THRU DN-3A.
c. 66 DN-8 RENAMES DN-5 THRU DN-2A.
d. 66 DN-8 RENAMES DN-2A THRU DN-6.

10. Consider the statement :
IF D-1 = SPACE GO TO PARA-A.
Which of the following is true ?
a. PARA-A will be executed if D-1 contains a blank in the leftmost
position.
b. PARA-A will be executed if D-1 contains a blank in rightmost
position.
c. PARA-A will be executed if D-1 contains all blanks.
d. Syntax is invalid since SPACE cannot be used in a relation
condition statement.

11. Study the following:
A PIC x(7) VALUE "ABC#D".
D PIC X VALUE "#".
E PIC X(5) VALUE "PQ".
F PIC X(15) VALUE "ABCDEFGHIJKLMNO".
P-1 PIC 99 VALUE 3.

STRING A SPACE E DELIMITED BY "#" INTO F WITH POINTER P-1 ON OVERFLOW DISPLAY "Error".
What will be the contents of F and P-1 after execution of the above:
a. ABC#PQGHIJKLMNO and 6 respectively.
b. ABCABCPQbbbLMNO and 11 respectively.
c. ABABCbPQbbbLMNO and 12 respectively.
d. Overflow condition would occur.
Note : "b" denotes blank in the above.
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mcmillan

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Joined: 18 May 2003
Posts: 1202
Location: India

PostPosted: Sat Mar 12, 2005 4:56 am    Post subject:
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Quote:
1.Observe the following statements concerning READ statement : Identify
the TRUE statement :
a) AT END clause is not applicable to INDEXED files.
b) AT END NEXT SENTENCE is not allowed.
c) File must be open in the OUTPUT or I-O mode at the time READ is
executed.
d) READ NEXT is allowed only for DYNAMIC access.


AT END NEXT SENTENCE is not Allowed.

Reason:
Code:
By default control will be transfered to the Next sentence only.


Quote:
2. Which of the foll. is an INCORRECT level number for a data-name?
a. 88 b. 13
c. 49 d. 01


88

Quote:
3. What is the correct intrepretation of the statement
PERFORM PROCESS-THIS UNTIL MY-CONDITION
where the condition-name is defined as folls:
a. do the para PROCESS-THIS once if MY-VALUE has a value 1
b. keep repeating para PROCESS-THIS as long as MY-VALUE has a
value 1
c. keep repeating para PROCESS-THIS as long as MY-VALUE has a
value other than 1.
d. do the para PROCESS-THIS once if MY-VALUE has a value other
than 1.


The question is not clear. I assume, MY-CONDITION may be the condition name with value 1.

keep repeating para PROCESS-THIS as long as MY-VALUE has a
value other than 1.


Example:

Code:
000100        ID DIVISION.                               
000200        PROGRAM-ID. SAMPLE.                         
000300        DATA DIVISION.                             
000310        WORKING-STORAGE SECTION.                   
000400        01 CNC PIC 9.                               
000410        88 MY-CONDITION VALUE 1.                   
000500        PROCEDURE DIVISION.                         
000600        PRA1.                                       
000700            PERFORM PROCESS-THIS UNTIL MY-CONDITION.
000701            STOP RUN.                               
000710        PARA2.                                     
000720          DISPLAY "QWERTY".
000730             SET MY-CONDITION TO TRUE.       


Quote:
4. A COBOL program when compiled gives an error at the Procedure
Division statement
ADD 10 TO COUNT-ITEMS
Which of the foll. situations could have caused the error?
a. COUNT-ITEMS has a PIC 999V9.
b. COUNT-ITEMS has a PIC ZZZ9.
c. COUNT-ITEMS is not initialised to zero anywhere in the
program
d. COUNT-ITEMS is declared in the FILE SECTION and not the
WORKING-STORAGE SECTION.


COUNT-ITEMS has a PIC ZZZ9

Reason:
Code:
Alphanumeric items cannot be used in Arithmetic Operations.


Quote:
5. A programmer used the IF clause:
IF RANGE-1 AND NOT RANGE-2
to describe a condition. Another programmer described the same
condition by the IF clause
IF TALLY-GROUP = 6 OR 7 OR 10
If these two condition specifications are identical which of the
foll. declarations applies to the situation?
a.
01 TALLY-GROUP PIC 99.
88 RANGE-1 VALUES 6 THRU 10.
88 RANGE-2 VALUES 1 THRU 5.
b.
10 TALLY-GROUP PIC 99.
88 RANGE-1 VALUES 6, 7, 10.
(Range-2 is any condition-name assiciated with TALLY-GROUP)
c.
10 TALLY-GROUP PIC 99.
88 RANGE-1 VALUES 6 THRU 10.
88 RANGE-2 VALUES 8, 9.
d.
10 TALLY-GROUP PIC 99.
88 RANGE-1-AND-NOT-RANGE-2 VALUES 6, 7, 10.


Choices A, B and C are all correct.

Quote:
6. In case of relative files, if RELATIVE KEY phrase is also specified
with ACCESS MODE SEQUENTIAL, what will be the result of READ ?



If the RELATIVE KEY clause is specified for this file, READ statement execution updates the RELATIVE KEY data item to indicate the relative record number of the record being made available.


Quote:
7 .The use of the INVALID KEY clause helps the programmer in :
a) checking whether the key field has the correct contents.
b) checking for a device error.
c) checking whether a specific file exists.
d) checking whether a specified record exists in a file.


checking whether a specified record exists in a file

Quote:
8. Consider the following statements:
MOVE 10 TO XYZ
PERFORM PARA-1 XYZ TIMES.
.................
PARA-1.
.........
MOVE 20 TO XYZ
.........
Which of the following would happen ?
a. PARA-1 would be performed 10 times only.
b. PARA-1 would be performed 20 times.
c. PARA-1 would be performed 21 times.
d. Run-time error occurs and the program aborts.


PARA-1 would be performed 10 times only

Reason:
Code:
After the PERFORM statement has been initiated, any change to the identifier has no effect in varying the number of times the procedures are initiated.


Quote:
9. Study the following :
RECORD-II.
DN-1.
0 DN-2 PIC X(12).
0 DN-2A PIC 9(8).
DN-1A REDEFINES DN-1.
0 DN-3A PIC XXXX.
0 DN-3 PIC 9(6).
0 DN-3B PIC X(10).
DN-5 PIC X(5).
DN-6 PIC 9(5).
State which of the following statements is correct
a. 66 DN-8 RENAMES DN-2 THRU DN-3.
b. 66 DN-8 RENAMES DN-2 THRU DN-3A.
c. 66 DN-8 RENAMES DN-5 THRU DN-2A.
d. 66 DN-8 RENAMES DN-2A THRU DN-6.


Question is not clear. I assume like:

01 RECORD-II.
02 DN-1.
05 DN-2 PIC X(12).
05 DN-2A PIC 9(8).
02 DN-1A REDEFINES DN-1.
05 DN-3A PIC XXXX.
05 DN-3 PIC 9(6).
05 DN-3B PIC X(10).
02 DN-5 PIC X(5).
02 DN-6 PIC 9(5).

66 DN-8 RENAMES DN-2A THRU DN-6

Reason:

Code:
The leftmost character in data-name-3 must not precede the leftmost character in data-name-2; the rightmost character in data-name-3 must not precede the rightmost character in data-name-2. This means that data-name-3 cannot be totally subordinate to data-name-2.



Quote:
10. Consider the statement :
IF D-1 = SPACE GO TO PARA-A.
Which of the following is true ?
a. PARA-A will be executed if D-1 contains a blank in the leftmost
position.
b. PARA-A will be executed if D-1 contains a blank in rightmost
position.
c. PARA-A will be executed if D-1 contains all blanks.
d. Syntax is invalid since SPACE cannot be used in a relation
condition statement.



PARA-A will be executed if D-1 contains all blanks

Reason: SPACE and SPACES have the same meaning.

Quote:
11. Study the following:
A PIC x(7) VALUE "ABC#D".
D PIC X VALUE "#".
E PIC X(5) VALUE "PQ".
F PIC X(15) VALUE "ABCDEFGHIJKLMNO".
P-1 PIC 99 VALUE 3.

STRING A SPACE E DELIMITED BY "#" INTO F WITH POINTER P-1 ON OVERFLOW DISPLAY "Error".
What will be the contents of F and P-1 after execution of the above:
a. ABC#PQGHIJKLMNO and 6 respectively.
b. ABCABCPQbbbLMNO and 11 respectively.
c. ABABCbPQbbbLMNO and 12 respectively.
d. Overflow condition would occur.
Note : "b" denotes blank in the above.


ABABCbPQbbbLMNO and 12 respectively

Reason: Starting Position: 3 (Pointer)
Initial Value: ABCDEFGHIJKLMNO"
Strings to be added:
A: ABC#Dbb (7 bytes)
Space: b
E: PQbbb (5 bytes)

So resultant string: ABCbPQbbb (Total 9 Characters)
Added to A from 3 rd postition: ABABCbPQbbbLMNO

Pointer Value : 3 + 9 = 12.
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manoj_madhavan
Warnings : 1

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Joined: 07 Mar 2005
Posts: 12

PostPosted: Tue Mar 15, 2005 3:30 pm    Post subject: COUNT-ITEMS has a PIC ZZZ9
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i think there is an error over tht answer.....

a declration of pic zzz9 is not alphanumeric....it is numeric 9(4) where 3 of the positions are put up for zero suppression....
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jos.samuel

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Joined: 10 Mar 2005
Posts: 3

PostPosted: Tue Mar 15, 2005 3:48 pm    Post subject: Re: Some COOL Interview Questions
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Thank you very much for the answers.

Regards
Samuel
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therasith

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Joined: 02 Jan 2004
Posts: 52
Location: chennai

PostPosted: Tue Mar 15, 2005 7:02 pm    Post subject: Reply
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Question no 4

A COBOL program when compiled gives an error at the Procedure
Division statement
ADD 10 TO COUNT-ITEMS
Which of the foll. situations could have caused the error?
a. COUNT-ITEMS has a PIC 999V9.
b. COUNT-ITEMS has a PIC ZZZ9.
c. COUNT-ITEMS is not initialised to zero anywhere in the
program
d. COUNT-ITEMS is declared in the FILE SECTION and not the
WORKING-STORAGE SECTION.


Answer:

b. COUNT-ITEMS has a PIC ZZZ9.

The pic clause pic zzz9 [pictue edited]is used for only display purpose we cant use in arithematic functions.

ref
cobol 85 mk roy.
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UNIVERSE

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Joined: 15 Mar 2005
Posts: 11
Location: Mumbai

PostPosted: Wed Mar 16, 2005 12:54 pm    Post subject: plzzz cross check the answer for Question No:2
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If the answer is 13, then it also suitable for 49.
If u cant declare a data name in Level number 13, then u cant do it in 49 also.
I hope the answer should be 88.
Plzzz go for cross-checking.....

Regards
Universe
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UNIVERSE

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Joined: 15 Mar 2005
Posts: 11
Location: Mumbai

PostPosted: Wed Mar 16, 2005 4:37 pm    Post subject: Answer for that Question is C.
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If u dont Initialise the working storage variable, it takes a garbage value by default. To my Knowledge, answer for this Question is C.
Plzz Cross-Check......
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mcmillan

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Joined: 18 May 2003
Posts: 1202
Location: India

PostPosted: Wed Mar 16, 2005 11:45 pm    Post subject: Re
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Dear Universe,

Quote:
If the answer is 13, then it also suitable for 49.
If u cant declare a data name in Level number 13, then u cant do it in 49 also.
I hope the answer should be 88.
Plzzz go for cross-checking.....


Yes, you are right Universe... Thanks for the correction. I have changed my Post.

Dear manoj_madhavan,

Quote:
If u don't Initialise the working storage variable, it takes a garbage value by default. To my Knowledge, answer for this Question is C.
Plzz Cross-Check......


Please don't turn around! Why don't you check it at the system?
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therasith

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Joined: 02 Jan 2004
Posts: 52
Location: chennai

PostPosted: Thu Mar 17, 2005 6:28 pm    Post subject: ANs
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Dears,

How we can declare these are invalid for data name.

we can declare in group memer followed by group level no 01.
if we want to declare (13,88 and 49) these values are must be come under group then right are wrong based on coding what have given.

if give like this

77 a pic 99.
13 b pic 99.
49 c pic xxx.
88 a pic x.

then now we can decide and clarify wrong data name.

So we cant tell about answers without coding.

This is My opinon.
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priya

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Joined: 24 Jul 2003
Posts: 568
Location: Bangalore

PostPosted: Thu Mar 13, 2008 2:56 pm    Post subject: Reply to: Some Cobol Interview Questions
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Quote:
COUNT-ITEMS has a PIC ZZZ9

Reason:
Code:
Alphanumeric items cannot be used in Arithmetic Operations.



You are wrong Mcmillan. PIC ZZZ9 is not alphanumeric. It is numeric-Edited.
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Anuj Dhawan

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Joined: 22 Apr 2006
Posts: 6258
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PostPosted: Fri Mar 14, 2008 12:22 am    Post subject:
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Hi,

Once I read...'whenever we can ..we should fix errors..'. Good one, at least, I got one point to 'scold' McMillian... icon_smile.gif, doesn't matter even if it comes in a thread 'dead' since last 3-years..
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mmwife

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Posts: 1592

PostPosted: Wed Mar 19, 2008 2:08 am    Post subject:
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No, it's not an A/N field, but it can contain A/N data (not always, but sometimes).

BTW, a numed field can appear in an arith stmt if it is the final receiving field in a COMPUTE. Not sure about a GIVING field - never tried it.
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