Unit 1 - 1.1.8

Question 1

Define speed

Answer 1

• Definition: The rate at which a device processes instructions, measured in GHz (gigahertz).
  
  • Examples:
    ○ A processor with 2.4 GHz can handle 2.4 billion instructions per second, while 3.2 GHz handles 3.2 billion.
    ○ Higher processing speed indicates better performance for tasks such as web browsing, music playing, or video streaming.
    Extra info.
  • Multi-Core Processors:
    ○ Each core handles a single instruction at a time, enabling simultaneous processing of multiple instructions.
    More cores result in faster task completion, enhancing overall device performance.

Question 2

Define Capacity

Answer 2

• Definition: Refers to the storage capacity of a device, indicating how much data it can store.
  
  • Devices with larger storage capacities are considered more efficient and offer greater convenience to users.

Question 3

Define Portability

Answer 3

The ease of carrying a device around.

Question 4

Deinfe bandwidth

Answer 4

• Definition: The data transmission speed of a network, measured in Gbps (gigabits per second).
  
  • Higher bandwidth means quicker data transfer rates between devices, improving network performance.
    Example: A network with 40 Gbps bandwidth can transmit up to 40 Gb of data per second.

Question 5

Define power efficiency.

Answer 5

• Definition: How slowly a device uses energy.
  
  • Devices with better power efficiency reduce the need for frequent recharging, saving costs and being more eco-friendly.
    Efficient energy use contributes to higher performance by extending the device’s operational time.

Question 6

Define analogue

Answer 6

continuous data processed by humans

Question 7

define digital

Answer 7

discrete data processed by computers

Question 8

Define binary

Answer 8

A number system using 0 and 1

Question 9

Define denary

Answer 9

A number system using 0 to 9

Question 10

Give an ascending order of the units of measurement of data.

Answer 10

Bit (b) – The smallest unit of data (a single 0 or 1).
Byte (B) – 8 bits (enough to store one character like “A” or “3”).
Kilobyte (KB) – 1,000 bytes (or 1,024 bytes in binary).
Megabyte (MB) – 1,000 KB (or 1,024 KB in binary).
Gigabyte (GB) – 1,000 MB (or 1,024 MB in binary).
Terabyte (TB) – 1,000 GB (or 1,024 GB in binary).

Question 11

Give an ascending order of the Units of File Transfer.

Answer 11

bps – Bits per second.
Kbps – Kilobits per second (1,000 bits per second).
Mbps – Megabits per second (1,000 Kbps).
Gbps – Gigabits per second (1,000 Mbps).
Tbps – Terabits per second (1,000 Gbps).

Question 12

What is a fun fact about file size transfers?

Answer 12

Fun Fact:
File size (like MB, GB) is often measured in bytes, but network speeds (like Mbps) are usually measured in bits per second. To convert, remember:

1 Byte = 8 bits
So, 1 MB/s (megabyte per second) equals 8 Mbps (megabits per second).