Memory Units — Set 3
Computers · मेमोरी इकाइयां · Questions 21–30 of 60
Computer memory capacity is usually expressed in multiples of which number?
Correct Answer: A. 2
Digital systems operate on binary logic, which is base 2. This is why memory units are powers of 2, like 2, 4, 8, 16, and 1024. This base 2 system aligns with the on/off states of electronic switches.
What is the capacity of a standard 1.44 MB floppy disk in bytes?
Correct Answer: D. 1,474,560 bytes
Floppy disks used a non-standard calculation where 1.44 MB actually meant 1440 Kilobytes. Since 1440 multiplied by 1024 equals 1,474,560, that is the true byte count. This is a classic historical anomaly in memory measurement.
Which unit is used to describe the speed of a data connection?
Correct Answer: A. Bits per second
Bits per second (bps) is the standard metric for measuring the rate of data transfer over a network. Higher units like Mbps or Gbps are used for modern broadband speeds. This measures how many 0s and 1s pass a point in one second.
How many bits are there in 2 Bytes?
Correct Answer: C. 16
Since one byte consists of 8 bits, two bytes contain exactly 16 bits. This represents the word size of older 16-bit computer processors. It can represent unsigned integer values from 0 to 65,535.
Which of the following represents the largest storage capacity?
Correct Answer: D. 0.5 PB
0.5 Petabytes (PB) is approximately 512 Terabytes, which is far larger than 1 TB. 100 GB is only 0.1 TB, and 10,000 MB is roughly 9.7 GB. Understanding these conversions is key to comparing storage hardware.
The term 'MebiByte' (MiB) was introduced to specifically distinguish between decimal and?
Correct Answer: D. Binary units
The correct answer is 'Binary units'. IEC introduced MiB to clarify that it means exactly 1024 squared bytes. This avoids confusion with the SI Megabyte which some industries treat as exactly 1,000,000 bytes. This distinction is important for accurate disk space reporting.
What is the size of a standard CD-ROM in terms of memory units?
Correct Answer: A. 700 MB
A standard Compact Disc can hold roughly 700 Megabytes of digital data. This capacity was revolutionary for distributing software and music in the 1990s. In contrast, 4.7 GB is the capacity of a standard DVD.
How many binary digits are used in a 64-bit processor's word?
Correct Answer: C. 64
A 64-bit processor processes a word made of 64 individual bits simultaneously. This allows the computer to access a much larger range of memory addresses than 32-bit systems. Modern operating systems are designed to take advantage of this large word size.
Which unit is 1024 times larger than a Gigabyte?
Correct Answer: C. Terabyte
The Terabyte (TB) is the next level after the Gigabyte in computer storage units. One Terabyte is equal to 1,048,576 Megabytes. Most modern laptop hard drives have a capacity of 1 TB or more.
If you have 512 bits, how many Bytes do you have?
Correct Answer: A. 64 Bytes
Dividing 512 bits by 8 bits per byte results in 64 Bytes. This is a common size for cache lines in modern CPU architectures. It shows the relationship between individual bits and the grouped byte unit.