Multiple Choice

Question

Can someone help me please to giving answers the following?
Will be awarded full points.
ABAP CERTIFICATION QUESTIONS
1. What is the fastest way to move one internal table to another internal table (assuming two tables of similar structure)?
a) Append lines of table1 to table2.
b) loop at table1.
Move: table1-field1 to table2-field1,
      table1-field2 to table2-field2.
Append table2.
Endloop.
c) table2[] = table1[].
d) loop at table1.
Move-corresponding table1 to table2.
Endloop.
e) move table1 to table2.
2. Which one of the following is true about a function module?
a) Function modules are locally accessible objects.
b) Function modules have inbound and outbound parameters.
c) Function modules have no built-in exception handling.
d) Function modules CANNOT be created by a programmer.
e) Function modules use a shared memory area.
3.
data: field1 type I value 10.
End-of-selection.
Subtract 2 from field1.
Write: / 'field1 =', field1.
Start-of-selection.
Add 5 to field1.
Write: / 'field1 =', field1.
Initialization.
Field1 = 5.
Write: / 'field1 =', field1.
What is the result after executing the above code?
a) field1 = 10
field1 = 8
b) field1 = 8
field1 = 14
field1 = 5
c) field1 = 5
field1 = 3
field1 = 8
d) field1 = 5
field1 = 10
field1 = 8
e) field1 = 8
field1 = 14
4. Which one of the following commands is used in drill-down reporting?
a) AT LINE-SELECTION
b) MODULE SET_SCREEN
c) LEAVE SCREEN
d) END-OF-PAGE
e) ON VALUE-REQUEST
5. What is an object which CANNOT be transported?
a) A local object
b) A change request
c) A development object
d) A class
e) A task
6. A GUI-Status is created in which transaction?
a) Flow Logic
b) Menu Painter
c) GUI Painter
d) Screen Painter
e) Status Painter
7. Which one of the following statements creates a GUI-status in a dialog program?
a) set pf-status '0100'.
b) set screen '0100'.
c) set gui-status '0100'.
d) set gui-status = '0100'.
e) set status '0100'.
8. Dialog programs have which naming convention?
a) ZPBOxxx
b) SAPMZxxx
c) ZDIAxxx
d) ZPAIxxx
e) Zxxx
9. Which dictionary structure contains system fields?
a) SYSTEM
b) SYTAB
c) SYST
(Note: SYST is an ABAP Dictionary Structure which you can view in SE11.
During the execution of any ABAP program, the runtime environment creates a structure 'SY' from this structure SYST. Hence in programs, you address the individual fields of the SYST structure as SY-<field> name. SYST is the system structure field and SY is the system variable)
d) SY
e) SYS
10.
An internal table ICODE contains the following entries:
field1  field2
John    12345
Alice   23478
Sam     54321
Bob     10000
IF NOT ICODE[] IS INITIAL.
SORT ICODE BY FIELD1 DESCENDING.
READ TABLE ICODE WITH KEY FIELD1 = 'Sam'.
WRITE: / SY-TABIX.
ENDIF.
What is the output of the above code after execution?
a) 1
b) 2
c) 3
d) 4
e) Sam
11.
Data: number type i.
while number < 10.
  Add 1 to number.
  If number < 8.
   Continue.
  Else.
   Add 4 to number.
  Endif.
Endwhile.
Write number.
What does NUMBER equal after executing the above code?
a) 4
b) 8
c) 10
d) 12
e) 14
12. Which one of the following statements would occur in the PBO of a dialog program using table control?
a) loop at itab.
b) loop at itab with control itab_tc.
c) module exit at exit-command.
d) module user_command.
e) set screen '0100'
13.
data: begin of itab occurs 0,
       field1(10),
       field2(10),
      end of itab.
Move: 'A' to itab-field1,
      'B' to itab-field2.
Append itab.
Append itab.
Move: 'B' to itab-field1.
Append itab.
Clear itab.
Move: 'A' to itab-field2.
Append itab.
What are the contents of itab after executing the above code?
a) A B
    A B
    B B
    A
b) A B
    A B
    B
    A
c) A B
    B
     A
d) A B
    B A
     A
e) A B
     B A
     B A
      B A
14. When debugging a BDC session, which command is used to exit the session?
a) /n
b) /bend
c) /nexit
d) /nquit
e) /exit
15. Which system field returns the number of records returned after a select?
a) sy-index
b) sy-recno
c) sy-lncnt
d) sy-dbcnt
e) sy-tabix
16. Which statement regarding Logical databases is FALSE?
a) Logical databases use a tree structure.
b) Logical databases use a standard selection-screen for selection criteria.
c) More than one logical database can be used in a report.
d) Any change to a logical database is reflected in all reports using that logical database.
e) Logical databases simplify and encapsulate data retrieval
17. Which one of the following is an example of an asynchronous update?
a) modify ztable from wa.
b) update ztable set field1 = '123'.
c) update ztable from ztable.
d) insert wa into ztable.
e) call function 'update_table' in update task
18. Which return code is associated with a failed authority check due to lack of user authorization for the chosen action?
a) 0 (The user has an authorization for all specified values.)
b) 4 (The user does not have the authorization.)
c) 8 (The number of specified fields is incorrect.)
d) 12 (The specified authorization object does not exist.)
e) 24
19. Which transaction is used to monitor, release, and reprocess BDC sessions?
a) SM36  (Schedule Background Job)
b) SE37 (ABAP Function Modules)
c) SE35  (ABAP/4 Dialog Modules)
d) SP35
e) SM35  (Batch Input Monitoring)
20. What is the structure for the following select-options? Select-options: zname like ztable-name.
a) zname-sign
zname-value
zname-low
zname-high
b) zname-low
zname-high
zname-pattern
c) zname-sign
zname-option
zname-low
zname-high
d) zname-sign
zname-option
zname-low
e) zname-sign
zname-option
zname-low
21. Which of the following are elementary types in ABAP?
a) C,D,F,H,I,N,P,T
b) C,D,F,I,N,P,Q,T
c) A,D,F,I,N,P,T,X
d) A,D,F,H,N,P,T,X
e) C,D,F,I,N,P,T,X
22.
data: f1 type I value 1,
       f2 type I value 1.
Write: / f1, f2.
Do 2 times.
Perform scope.
Enddo.
Write: / f1, f2.
Form scope.
Data: f1 type I value 2,
       f2 type I value 2.
Add: 1 to f1, 1 to f2.
Write: / f1, f2.
Endform.
What is the output of this program after execution?
a) 1 1
    3 3
    4 4
     4 4
b) 1 1
    2 2
    3 3
    1 1
c) 1 1
    3 3
    3 3
    3 3
d) 1 1
    2 2
    3 3
    3 3
e) 1 1
   3 3
   3 3
   1 1
23. Program specs call for screen 100 to appear in a modal dialog box.
PAI
module do_something.
  If field1 = 'X'.
   Call screen '0100'.
  Endif.
Endmodule.
Why does the above code fail to produce a modal box?
a) The addition 'starting at X' is left out.
b) The screen should be numbered 900.
c) The code must occur in the PBO.
d) The screen is of the wrong type.
e) Screens are not called within modules.
24. Field-symbols are defined in which of the following ways?
a) field-symbols f1 for f1.
b) field-symbols [f1].
c) field-symbols <f1> like f1.
d) field-symbols (f1) like f1.
e) field-symbols .
25.
1 TABLES: MARC.
2 DATA: BEGIN OF ITAB OCCURS 0,
3         FIELD1(5),
4         FIELD2(5),
5       END OF ITAB.
6 READ ITAB WITH KEY MATNR = '12345'.
7 IF SY-SUBRC = 0.
8   WRITE:/ ITAB-MATNR.
9 ENDIF.
Referring to the above code, which line contains an error?
a) Line 2
b) Line 5
c) Line 6
d) Line 7
e) Line 8
26.
Loop at itab.
Write itab.
Endloop.
From where is the written line derived in the above loop statement?
a) The table work area
b) sy-subrc
c) sy-index
d) The table header
e) sy-lisel
27. An internal table icode contains the following entries:
Field1  Field2
John    12345
Alice   23478
Sam     54321
john    50000
DATA: BEGIN OF ICODE OCCURS 0,
        FIELD1(5),
        FIELD2(5),
      END OF ICODE.
READ TABLE ICODE WITH KEY FIELD1 = 'John' BINARY SEARCH.
Why does executing the above code return a sy-subrc of 4?
a) Icode-field2 must be a numeric field.
b) The internal table has an incorrect structure.
c) Both internal table fields must be used in the search.
d) The internal table must be sorted first.
e) 'John' should not be capitalized.
28.
Data: pos like sy-index,
      index(1).
do 10 times.
Check sy-index between 2 and 6.
Add 1 to pos.
Move sy-index to index.
Write at pos index.
Enddo.
What is the output of the above code after execution?
a) 26
b) 1789
c) 23456
d) 132578910
e) 178910
29. Dialog programs are of which type?
a) Type B
b) Type 1
c) Type *
d) Type M
e) Type S
30.
data: f1(12) type c value 'Test Variant',
      f2(6)  type c,
      f3(8)  type c.
Move: f1 to f2,
       f2 to f3.
What do f1, f2, and f3 contain after executing the above code?
a) f1: 'Test Variant'
     f2: 'ariant'
     f3: '  ariant'
b) f1: 'Test Variant'
     f2: 'ariant'
     f3: ' Variant'
c) f1: 'Test Variant'
    f2: 'Test V'
    f3: 'st Varia'
d) f1: 'Test Variant'
     f2: 'Test V'
      f3: 'Test V  '
e) f1: 'Test Variant'
     f2: 'Test V'
     f3: 'Test Var'
31.
1. Data: Begin of itab occurs 0,
          field1,
         End of itab.
2. Data: Itab1 like itab occurs 0.
3. Data: Itab1 type itab occurs 0.
4. Data: Begin of itab1 occurs 0.
           Include structure itab.
   Data: End of itab1.
Which of the above statements code internal tables with a header line?
a) Lines 1 and 4
b) Lines 1 and 3
c) Lines 2 and 4
d) Lines 1 and 2
e) Lines 2 and 3
32. Which one of the following SQL statements does NOT lock the affected database entries ?
a) select *
b) Insert
c) Delete
d) select single for update
e) modify
33.
data: begin of itab occurs 0,
       num1 type I,
       num2 type I,
       num3 type I,
       mark,
      end of itab.
Delete from itab where mark eq 'D'.
Itab entries:
1 2 3 D
2 3 4
3 4 5 D
4 5 6 D
7 8 9 d
7 8 9 D
Given the ITAB entries, what are the contents of ITAB after executing the above code?
a) 1 2 3 D
    2 3 4
    3 4 5 D
    4 5 6 D
    7 8 9 d
b) 2 3 4
c) 7 8 9 d
   7 8 9 D
d) 2 3 4
     3 4 5 D
     4 5 6 D
     7 8 9 d
    7 8 9 D
e) 2 3 4
    7 8 9 d
34.
data: f1 type I value 1,
      f2 type I value 1.
Do 2 times.
  Perform scope.
Enddo.
Form scope.
Statics: f1 type I value 2,
          f2 type I value 2.
Add: 1 to f1, 1 to f2.
Write: / f1, f2.
Perform scope2.
Endform.
Form scope2.
Write: / f1, f2.
Endform.
What is the output of the above program after execution?
a) 3 3
1 1
4 4
1 1
b) 3 3
3 3
3 3
3 3
c) 3 3
3 3
4 4
4 4
d) 3 3
0 0
4 4
0 0
e) 3 3
1 1
4 4
3 3
35. An ABAP Screen is created in which transaction?
a) Screen Editor
b) Screen Painter
c) Menu Painter
d) ABAP Editor
e) Status Painter
36. Data written to the database would be reversed under which of the following circumstances?
a) Dequeue
b) Enqueue
c) Commit
d) Message Xnnn
e) End of Transaction
37. Program specifications ask for error checking on a selection-screen which contains a parameter inside a frame.
a) at selection-screen on block b1
b) selection-screen check block b1
c) at selection-screen
d) selection-screen on field f1
e) check selection-screen
38. Table ztest has a secondary index on the following fields:
tnum, tcode.
Select * from ztest where tnum ne '123' and tcode = '456'.
Why is the index not used in the above case?
a) Indexes are not allowed on Z tables
b) Variables must be used, NOT literals
c) Select individual fields, not select *
d) Client is not in the where clause
e) NE invalidates the use of an index
39. An internal table has two fields :
Field1, Field2
Which of the following is the fastest way to fill an internal table of the structure above.
a) select field1 field2 into (itab-field1, itab-field2)
       from ztable where field1 = '10'.
Append itab.
Endselect.
b) select * from ztable
       where field1 = '10'.
Move ztable to wa.
Append itab from wa.
Endselect.
c) select * into corresponding-fields of itab
       from ztable where field1 = '10'.
d) select * from ztable
       where field1 = '10'.
Append itab.
Endselect.
e) select * into table itab from ztable
       where field1 = '10'.
40. Update Bundling can occur within which of the following?
a) Within dialog tasks and dequeue processes
b) Within dialog and update tasks
c) Within enqueue processes
d) Within enqueue and dequeue processes
e) Within update tasks and enqueue processes
41.
data: begin of itab occurs 0,
        field1,
      end of itab.
Do 3 times.
Append initial line to itab.
Append 'X' to itab.
Enddo.
Describe table itab.
Write: sy-tfill.
What is the value of SY-TFILL (Current number of rows, Use- in Internal Tables)
after executing the above code?
a) 1
b) 2
c) 3
d) 6
e) 12
42.
Table zinfo                   Entries:
          a1   Smith  100.00   50.00
Field        Type             a1   Jones  100.00   50.00
          a2   Bob    100.00   50.00
id            C               a3   Bob    100.00   50.00
name          C               a4   Mike   100.00   50.00
sales         P               a5   Mary   100.00   50.00
sales2        P               a5   Mary   100.00   50.00
Using the above information, what is the result of the following code?
Loop at zinfo.
At new name.
Sum.
Write: / zinfo-id, zinfo-name, zinfo-sales.
Endat.
Endloop.
a) a1   Smith    100.00
a1   Jones    100.00
a2   Bob      100.00
a3   Bob      100.00
a4   Mike     100.00
a5   Mary     200.00
b) a1   Smith    100.00
a1   Jones    100.00
a2   Bob      200.00
a4   Mike     100.00
a5   Mary     100.00
c) a1   Jones    200.00
a2   Bob      200.00
a4   Mike     100.00
a5   Mary     100.00
a5   Mary     100.00
d) a1   Jones    200.00
a2   Bob      200.00
a4   Mike     100.00
a5   Mary     100.00
e) a1   Smith    200.00
a2   Bob      100.00
a3   Bob      100.00
a4   Mike     100.00
a5   Mary     200.00
43. Which one of the following is an INCORRECT form of the WRITE statement?
a) write x no-sign.
b) write x no-decimals.
c) write x left-justified no-gap.
d) write x no-zero.
e) write x under y currency us.
44.
1. Data: Begin of imara occurs 0.
2.         Include structure mara.
3. Data: End of imara.
4  Data: number like mara-matnr.
5. Select * into table imara
6. From mara where matnr = number.
7.   If sy-subrc = 0.
8.     Write:/ imara.
9.   Endif.
10. Endselect.
Which line in the above code contains a syntax error?
a) 2
b) 5
c) 6
d) 8
e) 10
45. data: field1(4) type c value 'ABCD'.
if field1 co 'ABCD'.
endif.
What is the value of sy-fdpos after this block of code is executed ?
a) D
b) 4
c) ABCD
d) A
e) 0
46. Which statement is INCORRECT when referring to SAP memory or ABAP memory?
a) ABAP memory is only stored during the lifetime of an external session.
b) You can use ABAP memory to pass data between internal sessions.
c) SAP memory is also referred to as Global Memory.
d) SAP memory is available across transactions.
e) IMPORT/EXPORT (TO MEMORY) statements are used for SAP memory.
47. A standard type internal table ICODE contains the following entries:
field1 field2
001    New York
002    Boston
003    Houston
008    Denver
010    San Diego
020    Seattle
READ TABLE ICODE WITH KEY FIELD1 = '015' BINARY SEARCH.
WRITE: / SY-TABIX.
What is the value of sy-tabix after executing the above code?
a) 0
b) 2
c) 5
d) 6
e) 7
48.
data: field1 type I value 10.
End-of-selection.
Subtract 2 from field1.
Write: / 'field1 =', field1.
Start-of-selection.
Add 5 to field1.
Write: / 'field1 =', field1.
Initialization.
Field1 = 5.
Write: / 'field1 =', field1.
What is the result after executing the above code?
a) field1 = 5
field1 = 10
field1 = 8
b) field1 = 8
field1 = 14
c) field1 = 10
field1 = 8
d) field1 = 5
field1 = 3
field1 = 8
e) field1 = 8
field1 = 14
field1 = 5
49. data: f1 type I value 1,
      f2 type I value 1.
Do 2 times.
  Perform scope.
Enddo.
Form scope.
Statics: f1 type I value 2,
          f2 type I value 2.
Add: 1 to f1, 1 to f2.
Write: / f1, f2.
Perform scope2.
Endform.
Form scope2.
Write: / f1, f2.
Endform.
What is the output of the above program after execution?
a) 3 3
    1 1
    4 4
    3 3
b) 3 3
     3 3
     4 4
     4 4
c) 3 3
    3 3
    3 3
    3 3
d) 3 3
    1 1
    4 4
    1 1
e) 3 3
     0 0
     4 4
     0 0
50.
Table ZNAME                    Table ZINFO
field    key                   field          key
mandt      X                   mandt            X
id         X                   id               X
lname      X                   dept
fname      X                   division
address                      
phone
fax
Using the above table definitions, which one of the following selects uses proper syntax?
a) select * from zinfo where id = '0025'.
Loop at zinfo.
Write: / id.
Endloop.
Endselect.
b) select mandt id lname into (client, id, lname)
from zname where id = '0025'.
Write: / id.
Endselect.
c) select * into table itab from zname
where id = '0025'.
  Select * from zinfo for all entries in itab
   where id = itab-id.
    Write: / zinfo-dept.
  Endselect.
d) select aid alname afname bdept into table itab
from zname as a INNER JOIN zinfo as b
on aid = bid
where lname = 'Smith'.
Loop at zname.
Write: / zname-id, zname-lname.
Endloop.
e) select count ( id ) sum ( lname ) into (num, lname)
from zname where id = '0025'.
Write: / num, lname.
Endselect.
51. Which one of the following statements is FALSE?
a) Local objects CANNOT be transported to another instance.
b) After a CHANGE REQUEST is released, no further changes to its' objects are allowed.
c) Development classes can be viewed by using transaction SE80.
d) A CHANGE REQUEST contains objects that can be transported to QA-PRD.
e) A CHANGE REQUEST only contains one task.
52. Which one of the following statements would occur in the PBO of a dialog program using table control?
a) loop at itab with control itab_tc.
b) loop at itab.
c) set screen '0100'.
d) module user_command.
e) module exit at exit-command
53.
data n type i.
do 5 times.
  If n > 0 and n < 5.
    n = n + 1.
  elseif n = 5.
    n = n - 5.
  else.
    n = n - 1.
  endif.
enddo.
Write: / n.
If n = 3, what is the output of this code after execution?
a) 2-
b) 1-
c) 0
d) 3
e) 5
54. You have added an append structure to a standard SAP table. What happens to the standard table when a new version of the table is imported during an upgrade?
a) The standard table is returned to standard. There fore, the append structure must be manually re-applied
b) The append fields are automatically appended to the table upon activation but you must still convert the table
c) All append structures are deleted. A new append structure must be created and then appended to the standard table
d) When the standard tables are activated, the append structure is automatically appended to the standard table
55. What can you NOT attach a search help to?
a) type
b) field of a table
c) check table
d) data element
e) table
f) screen
56. Which of the following does not physically exist in the underlying database? More than one answer is correct.
a) View
b) Internal table
c) Structure
d) Transparent Table
e) Domain
57. What conditions apply for a LEFT Outer Join in OPEN SQL?
a) Only 'Or' can be used as a logical operator in the ON condition
b) A join statement is found to the right of the join operator
c) At least one field from the table on the right is required for comparison in the ON condition
d) A Left Outer Join is not permitted in OPEN SQL
58. What is true about a check table?
a) Foreign key fields can accept only values which exist in the check table
b) Check table fields can accept only values which exist in the check table
c) Foreign key fields can accept any values regardless of the check table
d) Check tables are not used for restricting values in the foreign key tables
59. Full buffering would be appropriate for what type of tables?
a) Small Static tables
b) Transaction Tables
c) Tables with generic Keys
d) Internal Tables
60. Where does information come from when you press F1 on a screen field?
a) Domain short text
b) Search help
c) Data element documentation
d) Domain Help values
61. What are the main functions of a Data Dictionary? More than one answer is correct.
a) To insulate the ABAP/4 developer from the database
b) To support the creation and management of metadata (data about data)
c) To provide data security at the application level
d) To connect to the operating system
62. Structure MY_STRUCTURE is created in the dictionary. When does the structure get created in the underlying database ?
a) At the beginning of the table creation
b) When the database administrator physically creates the table
c) When the table is activated
d) At the end of the table creation after it is saved.
e) It does not correspond to an object in the underlying database and does not get created
63. What is the recommended method to modify a standard search help to include customer defined search paths?
a) Add an elementary search help to the standard search help
b) Enhance the standard search help with an append search help
c) Add a collective search help to the standard search help
d) Perform a modification to the standard search help
64. Where are Dictionary runtime objects used ?
a) in the dictionary
b) in structures
c) in table "nametab"
d) in work processes
65. If you want a subroutine U to have a formal parameter P that is used to return a value to the actual parameter . Which of the following definitions of U would you use to ensure that the value is passed back to the calling program only if the processing of U ends normally and is not terminated with a message statement ?
a) Form U changing P.
b) Form U using P.
c) Form U changing value(P).
d) Form U using value(P).
e) Form U using P local P.
66. You want to go from dialog processing to list processing using a selection screen . Which statements would you use?
a) call screen .
b) read list.
c) call transaction .
d) leave to ist processing followed by call selection-screen <nnn>.
e) selection-screen followed by parameters.
67. Which component on the application server controls the data traffic between work process and presentation server?
a) SapGui.
b) message handler.
c) dispatcher.
d) Dynpro processor.
e) frontend processor.
68. Which options exist for extending a table without having to modify a table within the ABAP Dictionary? More than one answer is correct.
a) append fields to the table.
b) use append structures.
c) use customer includes.
d) CI includes.
e) Insert new table fields.
69. Which of the following steps should be carried out in a transaction that implements updates ? More than one answer is correct.
a) read the record that is to be updated.
b) lock the record that is to be updated.
c) pass the changed data to the update process.
d) unlock the record that is to be updated.
e) call the Abap command commit work.
70. Which enhancements planned by SAP are maintained in transaction CMOD (SAP enhancements)? More than one answer is correct.
a) Table appends
b) Menu exits
c) function module exits
d) User exits
e) Screen exits
71. Why would you group corrections together? More than one answer is correct.
a) To enable several corrections to be assigned to the same transport.
b) To transport objects from different development classes.
c) To prevent other developers from processing the same objects.
d) To enable several developers to process the same object in parallel.
e) To retain versions of several objects together.
72. Which statements are allowed if you are working with an internal table of type sorted? More than one answer is correct.
a) Append
b) Collect
c) Sort
d) Read
e) Modify
73. How can you set the status and title for a modal dialog box?
a) In the attributes of the corresponding screen.
b) Before the corresp. call screen statement.
c) In a PBO module of the corresponding screen.
d) In the PAI module of the corresponding screen.
74. Which ABAP datatype would you use for calculations which require high degree of precision?
a) P
b) I
c) F
d) N
e) X
75. Which of the following statements about R/3 instances are correct? More than one answer is correct.
a) An R/3 instance is an administrative unit that combines together all the components of a R/3 system that provide one or more services.
b) A central R/3 system consists of one or more Instances.
c) Each instance has its own SAP buffer area.
d) Each instance contains at least one dialog service .
76. Where can you find the SET/GET parameters that has been assigned to a screen field? More than one answer is correct.
a) in table TPARA.
b) in the object list of the module pool.
c) in the F1 help for the screen field under technical info.
d) in the field list of the screen in the screen painter.
e) in the window with possible values.
77. Which letters are allowed to be the first letter in the names of customer defined tables,structures and global types? More than one answer is correct.
a) Y
b) Z
c) W
d) T
78. What must you do to undo DB changes previously issued in a dialog? More t

Answer 1

I disagree to Seshu's answer to question 1.
Correct answer of question 1 is C and <u><b>not A.</b></u>
Sorry I didn't find time to check the rest.
<u>To the examinee</u>
I wouldn't assume all answers from SDN-ers are correct if my certification exam was knocking the door! I would rather try and find out the correct answers myself from the system instead of mugging these answers without any understanding of the technology involved! Find out the answers yourself from the system...that way it will help you to understand why the answer is 'C' and not 'A'...just knowing the answer is 'C' is not good enough...one has to understand "why" its 'C' and not 'A'. Hope you get my point! Good luck.