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WorksheetsTheory Review by Students, IGCSE CS 0478 - dfm
Total questions: 25
Worksheet time: 13mins
Which type of touch screen is the least expensive?
Capacitive
Infra-Red
Resistive
A URL can be represented using both hexadecimal and binary.
True
False
Between the address bus, data bus and control bus, the ________ is only the only bi-directional bus.
address
data
control
What is the right sequence of fetch execute cycle?
Fetch Execute Decode
Decode Execute Fetch
Process Decode Encrypt
Fetch Decode Execute
Why is a SSD a good choice for storage in a laptop?
Cheaper than HDD
More space than HDD
Less power usage than HDD
More longevity than HDD
______________ can help to protect and secure your data
encryption
firewall
proxy server
backup
Which are high level languages
Assembly
Python
Machine Language
Java
Which of the following are non-volatile?
ROM
RAM
External SSD
Internal HDD
What is the logic statement for this circuit?
X = (NOT C) OR (A AND B)
X = (NOT C) AND (A OR B)
X = NOT C AND A OR B
What is the logic statement for this logic circuit.
X = (A AND B) OR (NOT C)
X = (A AND B) XOR (C)
X = (A OR B) AND (NOT C)
X = 1 if [R is 1 AND S is 1] OR [R is NOT 1 OR (S is 1 AND T is 1)]
X = 1 if [R is 1 AND S is 1] AND [R is NOT 1 AND (S is 1 AND T is 1)]
X = 1 if [R is 1 AND S is 1] OR [R is NOT 1 AND (S is 1 AND T is 1)]
Which of the following have greater longevity?
SSD
USB
HDD
PC (Program Counter) holds the memory address of the next instruction to be executed by the CPU.
True
False
What's a register?
Which logic gates output a 1 if both inputs are 0?
AND gate
OR gate
NOR gate
NAND gate
Identify all the optical storage devices
CD/DVD
USB
Blue-ray
SSD
An operating system will have ________ software that it uses to perform special tasks including, disk formatting and automatic updates, etc.
Extra
3rd Party
Utility
Functional
L1 cache memory is located on the CPU
True
False
What software can people use for free but cannot change its code?
Free software
Shareware
Freeware
In a fetch-execute cycle, the address will be copied to MDR after it is copied to the MAR.
True
False
Which touchscreen is not good in sunlight?
Infra-Red (heat or optical)
Resistive
Capacitive
Which type of touchscreen is the least expensive?
Capacitive
Infra-Red
Resistive
USB is an asynchronous serial data transmission method
True
False
What type of device is being described in this statement:
A scan head moves across the document until the
whole page is scanned. And image of the document is
produced and sent to a lens using a series of mirrors.
3D Printer
2D Scanner
Laser Printer
Projector
This is a software which converts scanned documents into a text file format.
Lossless Compression
Optical Character Recognition (OCR)
Accumulator Software
Zip Compression
Which of the following statements about sensors are true:
Sensors are devices which read or measure physical properties
Analogue data from a sensor needs to be converted to digital
Analogue to Digital Converter (ADC) is used to convert physical values from a sensor into digital
