Ch. 3 IGCSE ICT
This Ch. 3 IGCSE ICT quiz assesses knowledge on storage devices, focusing on access types, advantages, and backup processes. It evaluates understanding of magnetic disks, tapes, and other storage media, crucial for students mastering ICT concepts.
- 1.
Write an advantage of magnetic tape over magnetic disk.
- 2.
Type of access used by Magnetic disk
- A.
Serial
- B.
Direct
Correct Answer
B. DirectExplanation
The correct answer is "Direct" because magnetic disks allow direct access to data, meaning that any part of the disk can be accessed directly without having to read through all the preceding data. This is in contrast to serial access, where data is accessed sequentially in a linear fashion. Direct access is faster and more efficient for random access and retrieval of data from a magnetic disk.Rate this question:
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- 3.
Which is not the advantage of blu ray disk over DVD?
- A.
It uses blue laser
- B.
Birefringence
- C.
Secure encryption
- D.
Relatively expensive
Correct Answer
D. Relatively expensiveExplanation
The correct answer is relatively expensive. Blu-ray disks are known to be more expensive compared to DVDs. This is because the technology used in Blu-ray disks, such as the blue laser, allows for higher storage capacity and better video and audio quality. However, this advanced technology comes at a higher cost, making Blu-ray disks relatively expensive compared to DVDs.Rate this question:
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- 4.
Magnetic tapes cannot be used for real time processing as it's data .......................... time is very slow.
Correct Answer
accessExplanation
Data transfer is fast .Rate this question:
- 5.
.................................... Refers to the copying of files to a different medium incase of a problem with the main secondary storage device.
Correct Answer
Backing upExplanation
Backing up refers to the process of creating copies of files and data from a main secondary storage device to a different medium. This is done as a precautionary measure in case there is a problem with the main storage device, such as data loss, corruption, or hardware failure. By regularly backing up files, individuals and organizations can ensure that their important data is safe and can be easily restored if needed.Rate this question:
- 6.
CD RW is the best media to distribute free software .
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
CD ROM should be used as CD RW is expensive .Rate this question:
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- 7.
Which storage device should be used to store a high definition movie of two hours needing storage capacity of 25 GB.
- A.
Blu-ray disc
- B.
DVD
- C.
Hard Disk
- D.
CD
Correct Answer
A. Blu-ray discExplanation
A Blu-ray disc should be used to store a high definition movie of two hours needing a storage capacity of 25 GB. Blu-ray discs have a larger storage capacity compared to DVDs, CDs, and hard disks. They can hold up to 25 GB (single-layer) or 50 GB (dual-layer) of data, making them ideal for storing large files such as high definition movies.Rate this question:
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- 8.
How does the laser wavelength affect the storage capacity of a media?
- A.
Shorter the wavelength lesser the storage capacity
- B.
Shorter the wavelength greater the storage capacity
- C.
Does not matter
Correct Answer
B. Shorter the wavelength greater the storage capacityExplanation
The laser wavelength affects the storage capacity of a media because shorter wavelengths allow for more data to be packed into a given space. This is because shorter wavelengths have a higher frequency and can therefore encode more information per unit of space. Therefore, shorter wavelengths result in greater storage capacity.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Aug 18, 2018Quiz Created by
Ruth.dsouza