Computer Science for IGCSE & O level - Hardware (Section 26)
1
Which of the following is an example of a wireless network protocol?
2
What function does a modem perform?
პასუხი(A)
Converting digital signals to analog signals.
3
What are some functionalities of a Firewall?
4
Which component is *essential* for synchronizing all operations in a computer system?
5
What format does the microphone convert sound into?
7
What happens during the thermal bubble process in inkjet printers?
პასუხი(B)
A small bubble forms, ejecting ink.
8
What does the acronym USB stand for?
9
How do digital cameras convert light into an image?
პასუხი(B)
By converting light to an electric signal.
10
What does the analog-to-digital converter (ADC) do in a digital camera?
პასუხი(A)
Converts the electric charges into a digital image.
11
What method does an inkjet printer use to apply ink to a paper?
12
Which of the following can be used as I/O devices?
13
What is the function of the DHCP server?
პასუხი(B)
To assign IP addresses automatically
14
Which device can act as both an input and an output device?
15
What is the main function of a barcode system?
პასუხი(B)
To track and store stock information.
16
What type of scanner uses a beam of infrared light to detect touch?
17
Which of the following is an advantage of LED screens over LCD screens?
პასუხი(A)
They produce more light with less power.
18
Which components are primarily involved in generating sound from an electrical signal in a loudspeaker?
19
Which of the following are advantages of a DLP projector?
20
What are the main advantages of a DLP projector?
21
What type of cable is primarily used for high-speed internet connections?
22
What is a characteristic that distinguishes a single-layer Blu-ray disc from a DVD?
პასუხი(B)
Blu-ray discs have a higher storage capacity.
23
What is the meaning of 'ISA' in the context of computer architecture?
პასუხი(B)
Instruction Set Architecture
24
What is the primary advantage of using a blue laser over a red laser in optical storage devices like Blu-ray?
პასუხი(B)
Increased storage capacity.
25
Which technology allows for multi-touch capability?
26
What is the typical role of the transfer roller in a laser printer?
პასუხი(C)
To transfer the toner from the drum to the paper.
27
What is the purpose of a dual-layer disc in an optical storage device (e.g. DVD or Blu-ray)?
პასუხი(B)
To increase the storage capacity.
28
What is the purpose of the 'key field' in the context of barcode scanners used in a stock system?
პასუხი(C)
To uniquely identify the stock item in the stock database.
29
What is the main function of an actuator?
პასუხი(B)
To convert electrical signals into mechanical motion.
30
What is a major advantage of using an SSD over an HDD?
31
What best describes the operation of a touchscreen?
პასუხი(B)
Replaces the keyboard and mouse
32
Which of the following is a characteristic of solid-state drives (SSDs) as compared to traditional hard disk drives (HDDs)?
პასუხი(D)
SSDs have faster read/write speeds.
33
Which of the following is NOT a function of a modem?
პასუხი(C)
Routing data packets between networks
34
What is the role of a DHCP server?
პასუხი(A)
To assign IP addresses dynamically.
35
What is the purpose of the read/write head in an HDD?
პასუხი(B)
To read and write data to the platters.
36
Which factor is most relevant for the storage capacity of an optical disc?
37
Which of the following is NOT a function typically performed by a router?
პასუხი(D)
Converting analog signals to digital signals.
38
Which device is primarily responsible for connecting your home network to the internet?
39
In a DLP projector, how is the image formed on the screen?
პასუხი(C)
By reflecting light from micro-mirrors.
40
Which of the following terms is most closely associated with the time it takes for a hard drive's read/write head to find the correct track?
41
Which of the following is a component of a capacitive touchscreen?
პასუხი(B)
A flexible transparent coating
42
Which of the following is a potential risk of storing data in the cloud? (Select two)
43
Which type of display technology is known for its ability to create deep blacks by turning off individual pixels?
44
What does the CMOS chip in an optical mouse do?
პასუხი(B)
Analyzes the changing image patterns.
45
What converts the digital data into an electric current to drive a loudspeaker?
46
What is the role of the ISP in relation to IP addresses?
პასუხი(D)
The ISP can assign both static and dynamic IP addresses.
47
What part of the camera captures light?
48
Which of the following can 3D printing be used for?
49
How does the wavelength of light impact the storage capacity of optical media?
პასუხი(A)
Shorter wavelengths allow for a greater storage density.
50
In a digital camera, what is the relationship between the image sensor and the amount of light that enters?
პასუხი(A)
It converts the light into an image.
