Computer Science for IGCSE & O level - Hardware (Section 27)
1
In the context of embedded systems in a car, which of the following functions is NOT typically handled by an embedded system?
პასუხი
(D)
Providing weather updates via satellite communication
2
What does the MAC address uniquely identify?
პასუხი
(D)
A network interface.
3
What is a common use of coaxial cable?
პასუხი
(B)
Connecting to the internet via cable modem
4
Which of the following is NOT a key component of a typical laser printer?
პასუხი
(B)
Ink cartridge
5
Which steps are involved when producing sound from digital data through a loudspeaker?
პასუხი
A
B
D
6
What is the function of the red light-emitting diode (LED) in an optical mouse?
პასუხი
(B)
To illuminate the surface.
7
What is the main advantage of using flash memory in SSDs compared to traditional HDDs?
პასუხი
(A)
Lower power consumption and faster access times.
8
Which of the following describes a characteristic of a static IP address?
პასუხი
(C)
Does not change unless manually changed.
9
What is the function of the actuator arm in an HDD?
პასუხი
(B)
To position the read/write heads.
10
Which component is responsible for converting the signal from the cable (e.g. coaxial or fiber optic) to a signal that computers can understand?
პასუხი
(C)
Modem
11
In the greenhouse control example, the computer receives a signal if the humidity falls below a pre-set value. What is the computer likely to do in response?
პასუხი
(C)
Spray water to increase humidity.
12
After light passes through the lens of a digital camera, what is the next step in image creation?
პასუხი
(B)
The light hits the image sensor.
13
Which of these are applications for sensors?
პასუხი
A
B
C
14
In the Von Neumann architecture, what is the primary function of the Control Unit?
პასუხი
(C)
To fetch instructions from memory and direct operations.
15
Which part of the keyboard helps to identify a character and send it to the CPU?
პასუხი
(A)
The membrane or circuit board.
16
What type of device is used to record and output data for the vending machine?
პასუხი
(B)
An LED display
17
When referring to a network interface, what is a MAC address primarily used for?
პასუხი
(B)
Uniquely identifying a device on a local network.
18
In an embedded system, which of the following is NOT a typical component?
პასუხი
(D)
A graphical user interface (GUI).
19
What is a key difference between IPv4 and IPv6 in terms of address length?
პასუხი
(C)
IPv6 uses longer addresses.
20
What do the 3D coordinates from a 3D scanner represent?
პასუხი
(D)
The location of a series of points.
21
Which component is primarily responsible for storing the operating system when a computer is turned off?
პასუხი
(D)
Hard Drive
22
What does SSD stand for?
პასუხი
(A)
Solid State Drive
23
In face recognition software, how is each face often analyzed?
პასუხი
(B)
By comparing two digital images using face recognition software.
24
What is the primary function of a microphone diaphragm?
პასუხი
(C)
To vibrate in response to sound waves.
25
Which component in an HDD is responsible for reading and writing data?
პასუხი
(C)
Read/write head
26
Which of the following statements best describes the function of a router?
პასუხი
(C)
Connects different networks and forwards data packets.
27
What is the function of a switch in a local area network (LAN)?
პასუხი
(C)
To connect devices and forward data packets based on MAC addresses.
28
Which step in laser printing prepares the drum to receive the toner?
პასუხი
(C)
Applying a uniform charge to the drum
29
What is a key function of a computer within a greenhouse environment control system?
პასუხი
(C)
To monitor and adjust the greenhouse environment.
30
What is the primary advantage of solid-state drives (SSDs) over Hard Disk Drives (HDDs) in terms of performance?
პასუხი
(C)
SSDs have significantly faster access times.
31
What are some examples of storage devices used to provide virtual memory?
პასუხი
(B)
SSD/HDD
32
Which of the following protocols is used by DHCP to automatically assign IP addresses?
პასუხი
(C)
DHCP
33
In the context of computer memory, what does the acronym 'MAR' stand for?
პასუხი
(B)
Memory Address Register
34
What is meant by rotational latency in an HDD?
პასუხი
(C)
The time it takes for the desired sector to rotate under the read/write head.
35
What kind of signals does the amplifier use to drive the loudspeaker?
პასუხი
(B)
Analog signals
36
Which of the following storage media uses a shorter wavelength light to achieve higher storage density?
პასუხი
(C)
Blu-ray
37
What component in a loudspeaker vibrates in response to electrical signals, creating sound waves?
პასუხი
(C)
The cone
38
What are the key differences between SRAM and DRAM?
პასუხი
(C)
SRAM is faster and more expensive than DRAM.
39
What is a key characteristic that distinguishes DVD-Rs from DVD+Rs?
პასუხი
(B)
The way the data is written.
40
What happens after a sound goes to a microphone?
პასუხი
(B)
The sound is converted to an electrical current.
41
What is the function of the print head in an inkjet printer?
პასუხი
(B)
To spray the ink droplets onto the paper.
42
What is an advantage of embedded systems being dedicated to a specific task?
პასუხი
(B)
They can be more energy-efficient and optimized for that task.
43
What type of memory is commonly used to store the operating system and applications when the computer is turned on?
პასუხი
(C)
RAM
44
What are the inputs of the embedded system within the vending machine?
პასუხი
A
B
D
45
Which device is primarily used to convert a digital signal into an analog signal in an audio system?
პასუხი
(C)
DAC
46
Which of the following is an advantage of using an SSD over a traditional HDD?
პასუხი
(C)
Faster data access times.
47
Which type of memory is used for the temporary storage of data and instructions that the CPU needs to access quickly?
პასუხი
(C)
RAM
48
What is the primary difference between a hard disk drive (HDD) and a solid-state drive (SSD) regarding data storage?
პასუხი
(C)
HDDs use magnetic platters, while SSDs use flash memory.
49
What is a significant advantage of SSDs (Solid State Drives) over HDDs (Hard Disk Drives) in terms of performance?
პასუხი
(C)
Faster access times.
50
Which of the following best describes a static IP address?
პასუხი
(C)
An address manually configured and does not change unless updated.
