Memory MCQ Quiz - Objective Question with Answer for Memory - Download Free PDF

The correct answer is (i) and (iii).

• Static random access memory (SRAM) is a fast memory that uses small latches called “flip-flops” to store bits while DRAM stores bits in small capacitors.
• SRAM is a volatile memory i.e. data disappears when the power is removed from the memory device. It requires a constant power supply.
• SRAM is faster than DRAM but is more expensive because it's every cell requires several transistors.
• SRAM has a lower access time and offers low packaging density.

The correct answer is 2 TB pen drive.

Key Points

• The storage capacity of a device is measured in units such as KB, MB, GB, and TB, in increasing order of magnitude.
• 1 KB (Kilobyte) = 1024 Bytes, 1 MB (Megabyte) = 1024 KB, 1 GB (Gigabyte) = 1024 MB, and 1 TB (Terabyte) = 1024 GB.
• Among the options provided:
  • 1 KB pen drive = smallest storage capacity.
  • 8 MB pen drive = larger than 1 KB but smaller than 4 GB.
  • 4 GB pen drive = larger than 8 MB but smaller than 2 TB.
  • 2 TB pen drive = highest storage capacity among the options.
• Hence, the correct answer is 2 TB pen drive, as it offers the largest storage capacity.

Additional Information

• Storage devices come in various capacities to suit different user needs, from small files to large data backups.
• Modern pen drives offer capacities ranging from a few GBs to several TBs, making them suitable for diverse applications.
• 2 TB pen drives are ideal for storing high-definition videos, large databases, and extensive multimedia libraries.
• Pen drives are portable and convenient, enabling users to carry large amounts of data easily.
• When purchasing a pen drive, it's essential to consider storage capacity, speed, and compatibility with your device.

The correct answer is RAM

Key Points

• RAM (Random Access Memory): ✅ RAM is a type of volatile memory, which means its contents are lost when the computer is turned off. It temporarily stores data and instructions that the CPU needs while performing tasks.
• ROM (Read-Only Memory): ❌ ROM is non-volatile memory; its contents remain intact even after the computer is powered off.
• Hard Disk: ❌ This is a non-volatile storage device used to store data permanently.
• External Storage Device: ❌ Devices like USB drives or external HDDs are also non-volatile and retain data without power.

Additional Information

• Volatile Memory: Requires power to maintain stored information. It is faster and is mainly used for temporary storage during system operations.
• Non-Volatile Memory: Retains data even when power is off, ideal for long-term storage.

Hence, the correct answer is: option 2) RAM

The correct answer is EEPROM.

Key Points

• EEPROM stands for Electrically Erasable Programmable Read-Only Memory.
• Flash memory is a type of EEPROM, but with faster erasure and write times.
• It is a non-volatile memory, meaning data is retained even when power is off.
• Flash memory is widely used in USB drives, SSDs, and memory cards.

Additional Information

• SRAM (Static Random Access Memory):
  • SRAM is a type of volatile memory that uses flip-flops to store each bit of data.
  • It is faster than DRAM but more expensive and consumes more power.
  • Commonly used in cache memory for CPUs.
• DRAM (Dynamic Random Access Memory):
  • DRAM is a type of volatile memory that stores data in capacitors.
  • It requires constant refreshing to retain the data.
  • It is cheaper and slower than SRAM, but it is widely used in main memory for computers.
• SDRAM (Synchronous DRAM):
  • SDRAM is a type of DRAM that synchronizes with the system clock for faster data access.
  • It is widely used in modern PCs and other devices.
• EEPROM:
  • EEPROM is a non-volatile memory that allows data to be erased and reprogrammed electrically.
  • It is slower than SRAM and DRAM but is used in applications requiring long-term data storage.

The correct answer is: 4) An independent memory module that can be accessed concurrently

Explanation:

What is a Memory Bank?

• A memory bank is a logical or physical unit of RAM that can be accessed independently and simultaneously by the memory controller.

• It consists of multiple memory chips working together as a single module (e.g., a DIMM in modern systems).

• Banks enable parallel data access, improving memory bandwidth and performance.

Option Analysis

1. Cache memory location → Incorrect, as cache is a separate high-speed memory layer.

2. Group of memory cells in a single row → Describes a memory row, not a bank.

3. Section reserved for the OS → Refers to kernel memory, not a bank.

The correct answer is PROM.

• PROM is not a part of auxiliary memories in a Computer system.

Key Points

• Secondary Memory/ Auxiliary memory:
  • An Auxiliary memory is the lowest-cost, highest-capacity and slowest-access storage in a computer system. 
  • It is permanent in nature, so it is also called non-volatile.
  • In these memories, programs and data are kept for long-term storage or when not in immediate use.
  • Examples of auxiliary memories are magnetic tapes, Floppy, CD-ROM and magnetic disks.
  • The PROM (Programmable Read-Only Memory) has the option of being programmed.
  • It is not a part of auxiliary memory.

Additional Information

• Primary Memory:
  • It is often referred to as the working memory of the main memory of a computer system.
  • It is temporary in nature, so it is also called volatile memory.
  • Its example is RAM.

The correct answer is Binary.

Key Points

• Data stored in a compute in the form of binary.
• A binary number is a number expressed only two symbols: typically "0" (zero) and "1" (one).
• Each digit is referred to as a bit or binary digit.
• Bit is the smallest unit of memory.
• Bit is the short form of Binary digit.
• Half byte is known as a nibble.

Additional Information

• The memory of a computer is usually measured in bytes.
• Tera-represents the fourth power of 1000.
• A Terabyte is more precisely defined as 1,024 gigabytes.
• 1 TB equals 1,024 gigabytes (GB).
• The storage capacity of a hard disc is measured in Megabytes, Gigabytes, and Terabytes.

The correct answer is Yotta Byte (YB).

Key Points

• Yotta Byte (PB) is considered the largest.
• 1 Yotta Byte (YB) = 1024 Zettabytes

Additional Information

Data Measurement Chart:

The correct answer is Cache Memory.

Key Points

• Cache memory is a special very high-speed memory.
  • It is used to speed up and synchronize with the high-speed CPU. Cache memory is more expensive than main memory or disk memory but economical as compared to CPU registers.
  • Cache memory is an extremely fast memory type that acts as a buffer between the RAM and the CPU.
  • It holds frequently requested data and instructions so that they are immediately available to the CPU when needed.
  • Cache memory is used to reduce the average time to access data from the main memory.

Additional Information

• Secondary Memory:
  • It is non-volatile, i.e. it retains data when the power is turned off.
  • It is cheaper than primary memory.
  • Depending on whether the second memory device is part of the CPU, there are two types of secondary memory – fixed and removable.
  • Hard drives, SSD, Flash, Optical drives, USB drives are some examples of secondary memory in computers.

The correct answer is DRAM.

Key Points

• DRAM:
  • It is dynamic random access memory and is widely used as a computer's main memory. Hence, Option 2 is correct.
  • Each DRAM memory cell is made up of a transistor and a capacitor within an integrated circuit, and a data bit is stored in the capacitor.
• DDR-RAM:
  • It stands for Double Data Rate Synchronous Dynamic Random-Access Memory.
  • These are the computer memory that transfers the data twice as fast as regular chips like SDRAM chips because DDR memory can send and receive signals twice per clock cycle as a comparison.
• SRAM:
  • It stands for Static Random Access Memory.
  • It is a form of a semiconductor.
  • It is widely used in microprocessors, general computing applications, and electronic devices.
  • The SRAM is volatile in nature which means the data stored in it gets all wiped out once the power supply is cut.
  • SRAM is comprised of flip-flops. 
• PRAM:
  • In computer science, a parallel random-access machine is a shared-memory abstract machine.
  • As its name indicates, the PRAM is intended as the parallel-computing analogy to the random-access machine.

The correct answer is Flash Memory.

Key Points

• Digital Camera
  • It is a camera that captures photographs in flash memory.
  • The basis for digital camera image sensors is metal-oxide-semiconductor technology.
  • Steven Sasson invented the world's first digital camera in 1975.
• Flash Memory
  • It is a type of nonvolatile memory that erases data in units called blocks and rewrites data at the byte level.
  • It is widely used for storage and data transfers in consumer devices, industrial applications.
  • Flash memory is a non-volatile computer storage chip,
  • It is made up of EEPROM.
  • EEPROM is the acronym of electrically erasable programmable read-only memory,
  • EEPROM is a Programmable ROM that can be erased and reprogrammed using an electrical charge.
  • It was first was developed by George Perlegos.
  • It allows the user to update the computer BIOS without having to open the computer or remove any chips.
  • It is organized as arrays of floating-gate transistors.
  • USB flash drives, Memory cards are examples of flash memory storage.
  • BIOS is stored in a Flash memory chip.

Additional Information

• Virtual Memory
  • It is a feature of an operating system that enables a computer to be able to compensate for shortages of physical memory by transferring pages to data from random access memory to disk storage.
• Main Memory
  • It refers to physical memory that is internal to the computer.
  • Main Memory includes RAM and primary storage.
  • The computer can manipulate only data that is in the main memory.
• Cache Memory
  • Cache memory is an extremely fast memory type that acts as a buffer between RAM and the CPU.
  • It is used to reduce the average time to access data from the Main memory.

The correct answer isROM.

Key Points

• ROM(Read-only Memory) is permanent memory in the computer system.
• The computer system cannot write any data on ROM.

Important Points

• Random-access memory is a form of computer data storage that stores data and machine code currently being used.
• The computer CPU (short for Central Processing Unit) is a vital component that handles all the instructions and calculations that are sent to it from other computer's components and peripherals.
• CD-ROM Stands for "Compact Disc Read-Only Memory."
• A CD-ROM is a CD that can be read by a computer with an optical drive."

The Correct Answer is ROM.

Key Points

• The permanent memory of a computer is known as ROM(Read-only memory).
• In computers and other electronic devices, read-only memory (ROM) is a form of non-volatile memory.
• After the memory unit is manufactured, data contained in ROM cannot be electronically changed. Read-only memory, also known as firmware, is useful for storing software that is rarely updated during the life of the device.
• Plug-in cartridges containing ROM can be used to distribute software applications (such as video games) for programmable computers.
• Read-only memory refers to memory that is hard-wired and cannot be modified electronically after manufactures, such as a diode matrix or a mask ROM integrated circuit (IC).

Additional Information

• The memory is permanently installed on your computer. This is a read-only memory. The working memory of a computer, also known as random-access memory. The hardware allows data to be passed through a device. 
• Random-access memory (RAM) is a type of computer memory that allows data and machine code to be read and modified in any order. It is commonly used to store working data and machine code.
• A CD-ROM is a data-containing optical compact disc that has been pre-pressed. CD-ROMs are a form of read-only memory that computers can read but not write to or delete.
• The electronic circuitry that executes instructions in a computer programme is known as a central processing unit (CPU), also known as a central processor, main processor, or simply processor.

The correct answer is SRAM.

​Key Points

• SRAM memory devices are very much similar, mainly in terms of speed, to the cache memory.
• SRAM stands for Static random-access memory.
• Static random-access memory is a type of random-access memory that uses latching circuitry to store each bit.
• SRAM is volatile memory; data is lost when power is removed.
• The term static differentiates SRAM from DRAM which must be periodically refreshed.

Additional Information

• Dynamic random access memory (DRAM) is a type of semiconductor memory that is typically used for the data or program code needed by a computer processor to function.
• Flash memory, also known as flash storage, is a type of nonvolatile memory that erases data in units called blocks and rewrites data at the byte level.
• EEPROM (electrically erasable programmable read-only memory) is user-modifiable read-only memory (ROM) that can be erased and reprogrammed (written to) repeatedly through the application of higher than normal electrical voltage.

The correct answer is Terabyte.

Important Points

• The memory unit is the amount of data that can be stored in the storage unit.
• This storage capacity is expressed in terms of Bytes.
  • Bit (Binary Digit): A binary digit is logical 0 and 1 representing a passive or an active state of a component in an electric circuit.
  • Nibble: A group of 4 bits is called a nibble.
  • Byte: A group of 8 bits is called byte. A byte is the smallest unit, which can represent a data item or a character.
  • Word: A computer word, like a byte, is a group of a fixed number of bits processed as a unit, which varies from computer to computer but is fixed for each computer.

Additional Information

Memory units with no. of Bytes: