IGCSE Computer Science Paper 1 Crossword: 2.1 Data Transmission Types and Methods (Modules 131–141)
Name:
Date:
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Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
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8
Across
- 1. A USB port and plug of a set shape and wiring, so one cable type connects many different devices to a computer, such as a keyboard, a printer or a phone. Word 2 of: USB ________ _________ (8)
- 3. Data transmission in one direction only, from sender to receiver, with no reply possible. Example: a keyboard sending key presses to a computer. (7)
- 5. When a USB device is plugged in, the computer automatically detects it and loads the driver it needs, so the device works straight away with no need to restart. Word 1 of: ____ and ____ (4)
- 6. Word 2 of the term in 2 Down: _________ _____-___ (5)
- 7. Word 3 of the term in 1 Across: USB ________ _________ (9)
Down
- 1. USB sends data serially, one bit at a time, down a single cable. It works in both directions: half-duplex in older versions, full-duplex in later ones. The cable can also carry power. Word 2 of: USB ______ transmission (6)
- 2. Simplex is one-way only but simple and has no collisions. Half-duplex is two-way by turns, so slower. Full-duplex is two-way at once and fastest, but needs more capacity and costs more. Word 1 of: _________ _____-___ (9)
- 4. Pick the direction (simplex, half-duplex or full-duplex) and the bit arrangement (serial or parallel), then justify both using the scenario's distance, speed and two-way needs. Word 2 of: transmission ______ (6)
- 5. Word 3 of the term in 5 Across: ____ and ____ (4)
- 8. Word 3 of the term in 2 Down: _________ _____-___ (3)
Answer Key
IGCSE Computer Science Paper 1 · Modules 131–141
1S
T
A
N
2D
A
R
D
E
I
R
R
3S
I
M
P
L
E
X
A
C
4M
5P
L
U
G
6T
R
A
D
E
L
I
T
A
O
H
Y
7C
8O
N
N
E
C
T
O
R
F
D
F
Across
1STANDARD — A USB port and plug of a set shape and wiring, so one cable type connects many different devices to a computer, such as a keyboard, a printer or a phone. Word 2 of: USB ________ _________
3SIMPLEX — Data transmission in one direction only, from sender to receiver, with no reply possible. Example: a keyboard sending key presses to a computer.
5PLUG — When a USB device is plugged in, the computer automatically detects it and loads the driver it needs, so the device works straight away with no need to restart. Word 1 of: ____ and ____
6TRADE — Word 2 of the term in 2 Down: _________ _____-___
7CONNECTOR — Word 3 of the term in 1 Across: USB ________ _________
Down
1SERIAL — USB sends data serially, one bit at a time, down a single cable. It works in both directions: half-duplex in older versions, full-duplex in later ones. The cable can also carry power. Word 2 of: USB ______ transmission
2DIRECTION — Simplex is one-way only but simple and has no collisions. Half-duplex is two-way by turns, so slower. Full-duplex is two-way at once and fastest, but needs more capacity and costs more. Word 1 of: _________ _____-___
4METHOD — Pick the direction (simplex, half-duplex or full-duplex) and the bit arrangement (serial or parallel), then justify both using the scenario's distance, speed and two-way needs. Word 2 of: transmission ______
5PLAY — Word 3 of the term in 5 Across: ____ and ____
8OFF — Word 3 of the term in 2 Down: _________ _____-___