IGCSE Computer Science Paper 2 Crossword: 7a Program Development Life Cycle (Modules 60–70)
Name:
Date:
Class:
✎
Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
1
2
3
4
5
6
7
8
9
10
Across
- 3. Double entry check: INPUT the value twice inside a REPEAT loop and stop only when both are equal. Output a message if they do not match, so typing mistakes are caught. Word 2 of: _____ _________ = _________ (9)
- 5. The input values chosen before testing, such as normal, abnormal, extreme and boundary values, used to run a program so its results can be compared with the expected results. Word 2 of: test ____ (4)
- 6. Validation only checks data is reasonable and in the right form, so a valid value can still be ______, e.g. age 15 typed instead of 51. Verification is also needed. Word 3 of: valid but _____ (5)
- 8. Word 1 of the term in 1 Down: ______ _____ check (6)
- 10. A check where a person reads the data on screen and compares it by eye with the original source to spot mistakes. It is done by a person, not the program, and can miss errors. Word 1 of: ______ check (6)
Down
- 1. Data is entered twice and the two entries are compared. Any difference shows a mistake, so the user must enter it again. It misses the same mistake made twice. Word 2 of: ______ _____ check (5)
- 2. A test matched to the field: range for age, length and type for PIN, presence for name, format for dates or postcodes, check digit for ISBN. Always justify the choice. Word 1 of: __________ check (10)
- 4. Word 3 of the term in 3 Across: _____ _________ = _________ (9)
- 7. A ______ loop around INPUT that keeps asking for a value and shows an error message each time the check fails. The ______ condition is the valid range, so the loop ends only on valid data. Word 1 of: ______ INPUT _____ valid (6)
- 9. Word 3 of the term in 7 Down: ______ INPUT _____ valid (5)
Answer Key
IGCSE Computer Science Paper 2 · Modules 60–70
1E
N
2V
T
3P
A
S
S
W
O
R
D
1
L
Y
I
4P
D
5D
A
T
A
S
T
S
I
6W
R
O
N
G
O
N
R
7R
8D
O
9U
B
L
E
2
N
P
T
E
10V
I
S
U
A
L
L
T
Across
3PASSWORD1 — Double entry check: INPUT the value twice inside a REPEAT loop and stop only when both are equal. Output a message if they do not match, so typing mistakes are caught. Word 2 of: _____ _________ = _________
5DATA — The input values chosen before testing, such as normal, abnormal, extreme and boundary values, used to run a program so its results can be compared with the expected results. Word 2 of: test ____
6WRONG — Validation only checks data is reasonable and in the right form, so a valid value can still be ______, e.g. age 15 typed instead of 51. Verification is also needed. Word 3 of: valid but _____
8DOUBLE — Word 1 of the term in 1 Down: ______ _____ check
10VISUAL — A check where a person reads the data on screen and compares it by eye with the original source to spot mistakes. It is done by a person, not the program, and can miss errors. Word 1 of: ______ check
Down
1ENTRY — Data is entered twice and the two entries are compared. Any difference shows a mistake, so the user must enter it again. It misses the same mistake made twice. Word 2 of: ______ _____ check
2VALIDATION — A test matched to the field: range for age, length and type for PIN, presence for name, format for dates or postcodes, check digit for ISBN. Always justify the choice. Word 1 of: __________ check
4PASSWORD2 — Word 3 of the term in 3 Across: _____ _________ = _________
7REPEAT — A ______ loop around INPUT that keeps asking for a value and shows an error message each time the check fails. The ______ condition is the valid range, so the loop ends only on valid data. Word 1 of: ______ INPUT _____ valid
9UNTIL — Word 3 of the term in 7 Down: ______ INPUT _____ valid