Computer Science for IGCSE & O level - Hardware (Section 17)
1
Which type of memory is often referred to as being "non-volatile"?
2
In the process of laser printing, what is the next step after the image is transferred to the paper by the transfer roller?
отговор(B)
The paper goes through the fuser unit.
3
What is the main difference between IPv4 and IPv6?
отговор(A)
IPv6 supports a larger address space.
4
What characteristics are true for Ethernet?
5
Which of the following is considered volatile memory?
6
What are the factors affecting computer performance?
7
What does the term 'IP' stand for in networking?
8
What are advantages of SSDs over HDDs? (Select two)
9
What does the term 'overclocking' refer to in the context of computer performance?
отговор(B)
Running a CPU or other component at a higher clock speed than its designed specifications.
10
What is the defining characteristic of virtual memory?
отговор(A)
It uses a portion of the hard drive to simulate RAM.
11
Which of the following are advantages of using capacitive touch screens?
12
What are some potential disadvantages of using cloud storage? (Select two)
13
What is a key benefit of virtual memory?
отговор(B)
Enabling a system to run more programs than its physical RAM capacity.
14
In a digital camera, the sensors convert light into what?
отговор(A)
Analog electrical charges
15
What action is taken when data is fragmented on an HDD?
отговор(C)
The data is distributed across different areas of the disk.
16
What are the main components of the digital camera which take a photograph?
17
What is latency in the context of a hard disk drive?
отговор(C)
The time it takes for a sector to rotate under the read/write head.
18
What are the characteristics of Dynamic IP addresses?
19
Which of the following is an example of an output device?
20
Which of the following is a key characteristic of a MAC address?
отговор(A)
It is used to identify a device on a local network.
21
In the context of CPU, what is the purpose of the 'decode' stage in the instruction cycle?
отговор(C)
Interpreting the instructions.
22
In a laser printer, the laser beam does what?
отговор(B)
Creates a static charge on the drum.
23
What is the role of the developer unit in a laser printer?
отговор(B)
To apply toner to the drum.
24
Which of the following best describes the purpose of a cache memory?
отговор(B)
To provide faster access to frequently used data.
25
What is a key difference between public and private cloud storage?
отговор(C)
Public cloud is shared; private cloud is dedicated.
26
Which of the following is the function of a digital-to-analog converter (DAC) in an audio system?
отговор(B)
To convert digital audio data into an analog electrical signal.
27
Which of the following best describes the function of a solenoid?
отговор(B)
To convert electrical energy into magnetic force.
28
What are the benefits of using a wireless network?
29
Which of the following is a characteristic of a wireless network?
отговор(B)
Uses radio waves to transmit data.
30
What format does the analog to digital converter change to?
31
What best describes the process of 'additive manufacturing'?
отговор(C)
Building an object layer by layer.
32
Which of the following is a key feature of Dynamic RAM (DRAM)?
отговор(B)
Requires constant refreshing.
33
What is the function of an ADC in a system?
отговор(C)
Convert analog signals to digital signals
34
What is the function of an instruction set?
отговор(C)
To define the operations that a CPU can perform.
35
What does OCR software do?
отговор(B)
Converts scanned text into an editable format.
36
In the example of a security system using an embedded system, which of the following would be considered an *input*?
отговор(C)
Temperature data from a sensor.
37
How do QR codes and bar codes differ in the amount of data they can store?
отговор(B)
QR codes store more data than barcodes.
38
What is a key benefit of using an SSD instead of an HDD?
39
What is the function of the processor in an optical mouse?
отговор(D)
To analyze changing image patterns to determine mouse movement.
40
How does virtual memory handle data that is not actively being used by the CPU?
отговор(B)
It moves the data to the hard drive.
41
What is a key advantage of SRAM over DRAM?
42
Which of the following is a characteristic of a static IP address?
отговор(B)
It does not change unless configured manually.
43
What is the main advantage of using a wireless network?
44
Which is NOT an example of a primary storage device?
45
What is the role of a 'controller' in an SSD?
отговор(B)
To manage the flash memory.
46
What is the primary use of a MAC address?
отговор(B)
To identify a device on a local network.
47
Which device is usually used to provide Wi-Fi connectivity in a home or office?
48
Which component is key in ensuring the image quality and how light is captured within a digital camera?
49
What does the acronym 'BIOS' stand for?
отговор(A)
Basic Input Output System
50
What is the function of the microphone in converting sound to a digital format?
отговор(C)
It converts sound waves into an electrical current.
