Operating System Quiz : Do You Know The Details?
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An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.
Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.
Know more about operating systems in this quiz
Questions and Answers
- 1.
__________________ are general purpose in nature, but may be restricted to specific tasks such as performing floating-point operations.
- A.
Operating systems
- B.
Data registers
- C.
Memory management registers
- D.
Central Processing Unit
- E.
All of the above
Correct Answer
B. Data registersExplanation
Data registers are general purpose in nature, meaning they can be used for various tasks. However, they can also be restricted to specific tasks, such as performing floating-point operations. This means that data registers can be used for a wide range of purposes, but they can also be specialized for specific tasks when needed.Rate this question:
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- 2.
______________________ acts as the interface between the computer hardware and the human user.
Correct Answer
The operating systemExplanation
The operating system serves as the intermediary between the computer hardware and the human user. It manages the hardware resources, such as memory and CPU, and provides a user-friendly interface for the user to interact with the computer system. The operating system handles tasks such as managing files and folders, running applications, and controlling input and output devices. It acts as a bridge that allows the user to communicate with the hardware and perform various tasks efficiently and effectively.Rate this question:
- 3.
One of the _____________________ main functions is to exchange data with memory.
Correct Answer
processor’sExplanation
The processor's main function is to exchange data with memory. This means that the processor is responsible for retrieving and storing data in the computer's memory, which is essential for the execution of programs and overall system performance. Without this exchange of data, the processor would not be able to access the necessary information to carry out its tasks effectively.Rate this question:
- 4.
User-visible ____________________ are typically accessible to system programs but are not typically available to application programs.
Correct Answer
registersExplanation
Registers are small, high-speed memory locations within a CPU that store data that is frequently accessed by the processor. They are used by system programs, such as the operating system, to manage and control the hardware resources of the computer. Application programs, on the other hand, do not typically have direct access to registers as they are managed by the system. Therefore, registers are accessible to system programs but not to application programs.Rate this question:
- 5.
True or FalseThe Program Status Word contains status information in the form of condition codes, which are bits typically set by the programmer as a result of program operation.
Correct Answer
FalseExplanation
False it is set by the processor hardwareRate this question:
- 6.
The processing required for a single instruction on a typical computer system is called the __________________ .
Correct Answer
Execute CycleExplanation
also called the Instruction CycleRate this question:
- 7.
Where is a fetched instruction normally loaded into?
Correct Answer
the Instruction Register
IRExplanation
When a fetched instruction is loaded, it is typically stored in the Instruction Register (IR). The IR is a temporary storage location within a computer's central processing unit (CPU) that holds the current instruction being executed. This register allows the CPU to access and decode the instruction, determining the appropriate actions to be taken. By loading the fetched instruction into the IR, the CPU can efficiently process the instruction and carry out the necessary operations.Rate this question:
- 8.
An _______________ is a mechanism used by system modules to signal the processor that normal processing should be temporarily suspended.
- A.
Interruption
- B.
Interrupt
- C.
Processor
- D.
Memory
- E.
All of the above
Correct Answer
B. InterruptExplanation
An interrupt is a mechanism used by system modules to signal the processor that normal processing should be temporarily suspended. When an interrupt occurs, the processor stops executing its current task and transfers control to a specific interrupt handler routine. This allows the system to prioritize and handle important events or tasks in a timely manner, ensuring efficient and effective operation.Rate this question:
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- 9.
To accommodate interrupts, what kind of cycle is added to the instruction cycle.
- A.
An extra fetch
- B.
Interrupt
- C.
A reboot
- D.
Any system call
- E.
All of the above
Correct Answer
B. InterruptExplanation
To accommodate interrupts, an interrupt cycle is added to the instruction cycle. This allows the processor to handle interrupts from external devices or internal events. When an interrupt occurs, the processor suspends its current execution and transfers control to the interrupt handler. This cycle ensures that the interrupt is properly acknowledged and handled, allowing the processor to respond to time-sensitive events or prioritize certain tasks over others. Therefore, the correct answer is "interrupt".Rate this question:
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- 10.
The minimum information that must be saved before the processor transfers control to the interrupt handler routine is the ____________________
- A.
Program status word
- B.
PSW
- C.
Location of the next instruction
- D.
PSW and the program status word
- E.
All of the above
Correct Answer
B. PSWExplanation
Before the processor transfers control to the interrupt handler routine, the minimum information that must be saved is the program status word (PSW). The PSW contains important information about the current state of the processor, such as the condition codes, interrupt enable/disable flag, and privilege level. Saving the PSW ensures that the interrupt handler routine can resume execution from the correct state once the interrupt is handled. Therefore, the correct answer is PSW.Rate this question:
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- 11.
True or False One approach to dealing with multiple interrupts is to disable all interrupts while an interrupt is being processed.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Disabling all interrupts while an interrupt is being processed is not a recommended approach to dealing with multiple interrupts. This is because it can lead to the system missing important interrupts and causing delays in processing other tasks. Instead, a more effective approach is to prioritize interrupts and handle them accordingly, allowing critical interrupts to be processed while non-critical interrupts are temporarily postponed. This ensures that the system remains responsive and efficient in handling multiple interrupts simultaneously.Rate this question:
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- 12.
____________________________ allows the processor to make use of idle time caused by long-wait interrupt handling.
Correct Answer
MultiprogrammingExplanation
Multiprogramming allows the processor to make use of idle time caused by long-wait interrupt handling. In multiprogramming, multiple programs or processes are loaded into the memory simultaneously. When one program is waiting for an I/O operation or any other long-wait interrupt, the processor switches to another program that is ready to execute. This way, the processor can utilize the idle time efficiently by executing other programs, increasing overall system throughput and reducing idle time.Rate this question:
- 13.
In a two-level memory hierarchy, the Hit Ratio is defined as the fraction of all memory accesses found in the slower memory.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
False - found in the faster memory.Rate this question:
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- 14.
_____________________ memory exploits the principle of locality by providing a small, fast memory between the processor and main memory.
Correct Answer
CacheExplanation
Cache memory is a type of memory that is located between the processor and main memory. It is designed to exploit the principle of locality, which states that recently accessed data is likely to be accessed again in the near future. By storing frequently used data in cache memory, the processor can quickly retrieve it without having to access the slower main memory. This helps to improve the overall performance and efficiency of the system. Therefore, cache memory is the correct answer to the given question.Rate this question:
- 15.
In cache memory design, ____________ size refers to the unit of data exchanged between cache and main memory
Correct Answer
blockExplanation
In cache memory design, the term "block" refers to the unit of data that is exchanged between the cache and the main memory. This means that when data is requested from the cache, it is retrieved in blocks rather than individual pieces. The block size determines how much data is transferred at once, and a larger block size can help improve cache performance by reducing the number of memory accesses required.Rate this question:
- 16.
True or False:The primary problem with programmed I/O is that the processor must wait for the I/O module to become ready and must repeatedly interrogate the status of the I/O module while waiting.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The primary problem with programmed I/O is that the processor has to wait for the I/O module to become ready and constantly check the status of the module while waiting. This can lead to inefficient use of the processor's time and resources, as it is unable to perform other tasks during this waiting period.Rate this question:
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- 17.
The general role of an operating system is to:
- A.
Act as an interface between various computers
- B.
Provide a set of services to system users
- C.
Manage files for application programs
- D.
All of the above
- E.
None of the above
Correct Answer
B. Provide a set of services to system usersExplanation
The general role of an operating system is to provide a set of services to system users. This includes managing resources such as memory, processing power, and input/output devices, as well as providing a user interface for users to interact with the system. Additionally, the operating system manages files for application programs, ensuring that they are stored, accessed, and manipulated efficiently. Acting as an interface between various computers is not a primary role of an operating system, although it may facilitate communication between different systems. Therefore, the correct answer is "Provide a set of services to system users."Rate this question:
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- 18.
The four main structural elements of a computer system are:
- A.
Processor, Registers, I/O Modules & Main Memory
- B.
Processor, Main Memory, I/O Modules & System Bus
- C.
Processor, Registers, Main Memory & System Bus
- D.
All of the above
- E.
None of the above
Correct Answer
B. Processor, Main Memory, I/O Modules & System BusExplanation
The four main structural elements of a computer system are the processor, main memory, I/O modules, and system bus. The processor is responsible for executing instructions and performing calculations. The main memory stores data and instructions that the processor needs to access. The I/O modules allow the computer system to communicate with external devices such as keyboards, printers, and disks. The system bus is a communication pathway that connects the processor, main memory, and I/O modules, allowing them to exchange data and instructions. This answer includes all of these components, making it the correct choice.Rate this question:
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- 19.
The two basic types of processor registers are:
- A.
Control and Status registers
- B.
User-visible and user-invisible registers
- C.
A and B only
- D.
User-visible and Control/Status registers
- E.
None of the above
Correct Answer
D. User-visible and Control/Status registersExplanation
The correct answer is "User-visible and Control/Status registers". Processor registers are small storage units within a processor that hold data and instructions temporarily during processing. User-visible registers are accessible to the programmer and are used to store data and perform operations. Control/Status registers, on the other hand, are used by the processor to control its operations and store status information. Therefore, the two basic types of processor registers are user-visible registers and control/status registers.Rate this question:
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- 20.
- Address registers may contain:
- A.
Memory addresses of instructions
- B.
Memory addresses of data
- C.
Partial memory addresses
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Address registers can contain memory addresses of instructions, memory addresses of data, and partial memory addresses. This means that they can hold any type of memory address, whether it is for instructions or data, and whether it is a complete address or a partial one. Therefore, the correct answer is "All of the above."Rate this question:
- 21.
A Control/Status register that contains the address of the next instruction to be fetched is called the:
- A.
Instruction Register (IR)
- B.
Program Status Word (PSW)
- C.
Central Processing Unit (CPU)
- D.
Program Counter (PC)
- E.
All of the above
Correct Answer
D. Program Counter (PC)Explanation
The Program Counter (PC) is a control/status register that contains the address of the next instruction to be fetched. It keeps track of the memory address of the current instruction being executed and is automatically incremented to point to the next instruction after each fetch. The PC plays a crucial role in the execution of instructions by ensuring that the correct sequence of instructions is followed. Therefore, the correct answer is Program Counter (PC).Rate this question:
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- 22.
The two basic steps used by the processor in instruction processing are:
- A.
Fetch and Execute cycles
- B.
Fetch and Instruction cycles
- C.
Instruction and Execute cycles
- D.
None of the above
Correct Answer
A. Fetch and Execute cyclesExplanation
The processor follows a two-step process in instruction processing: fetching the instruction from memory and then executing it. This is known as the fetch and execute cycle. The processor fetches the instruction from memory, which involves retrieving the instruction from the memory location specified by the program counter. Once the instruction is fetched, the processor then executes it, which involves carrying out the operations specified by the instruction. This cycle is repeated for each instruction in the program.Rate this question:
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- 23.
A fetched instruction is normally loaded into the:
- A.
Accumulator (AC)
- B.
Program Counter (PC)
- C.
Instruction Register (IR)
- D.
None of the above
Correct Answer
C. Instruction Register (IR)Explanation
When a fetched instruction is received, it is typically loaded into the Instruction Register (IR). The IR is a component of the CPU that temporarily holds the current instruction being executed. It allows the CPU to decode and execute the instruction. The Accumulator (AC) is a register that stores intermediate results during calculations, the Program Counter (PC) keeps track of the memory address of the next instruction to be fetched, and "None of the above" is not the correct answer as the fetched instruction needs to be stored somewhere, which is the purpose of the IR.Rate this question:
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- 24.
A common class of interrupts is:
- A.
Program
- B.
Timer
- C.
I/O
- D.
All of the above
- E.
MMR
Correct Answer
D. All of the aboveExplanation
The correct answer is "All of the above". This means that all the options listed - Program, Timer, I/O, and MMR - are common classes of interrupts. Interrupts are signals sent to the processor by external devices or internal events to request attention or indicate a change in status. Program interrupts occur when a program requests a service from the operating system. Timer interrupts occur at regular intervals to perform time-related tasks. I/O interrupts occur when input or output devices need attention. MMR interrupts are interrupts generated by memory management units. Therefore, all of these options are valid classes of interrupts.Rate this question:
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- 25.
When an external device becomes ready to be serviced by the processor, the device sends this type of signal to the processor:
- A.
Halt signal
- B.
Handler signal
- C.
None of the above
- D.
Interrupt signal
Correct Answer
D. Interrupt signalExplanation
When an external device becomes ready to be serviced by the processor, it sends an interrupt signal to the processor. This signal interrupts the normal execution of the processor and directs it to handle the request from the external device. The interrupt signal allows the processor to efficiently handle multiple tasks simultaneously by prioritizing the requests from different devices.Rate this question:
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- 26.
Information that must be saved prior to the processor transferring control to the interrupt handler routine includes:
- A.
Processor Status Word (PSW)
- B.
Processor Status Word (PSW) & Contents of processor registers
- C.
Processor Status Word (PSW) & Location of next instruction
- D.
None of the above
Correct Answer
C. Processor Status Word (PSW) & Location of next instructionExplanation
The correct answer is Processor Status Word (PSW) & Location of next instruction. When an interrupt occurs, the processor needs to save the current state of the program so that it can resume execution after handling the interrupt. This includes saving the Processor Status Word (PSW), which contains important flags and control information, as well as the location of the next instruction to be executed. This information is necessary to ensure that the program can be properly resumed once the interrupt has been handled.Rate this question:
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- 27.
One accepted method of dealing with multiple interrupts is to:
- A.
Disable all interrupts except those of highest priority
- B.
Service them in round-robin fashion
- C.
Define priorities for the interrupts
- D.
None of the above
Correct Answer
C. Define priorities for the interruptsExplanation
By defining priorities for the interrupts, the system can determine the order in which the interrupts should be serviced. This allows the system to handle the interrupts in a structured and organized manner, ensuring that the most important interrupts are serviced first. By assigning priorities, the system can effectively manage multiple interrupts and prevent any potential conflicts or issues that may arise.Rate this question:
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- 28.
In a uniprocessor system, multiprogramming increases processor efficiency by:
- A.
Increasing processor speed
- B.
Eliminating all idle processor cycles
- C.
Taking advantage of time wasted by long wait interrupt handling
- D.
All of the above
Correct Answer
C. Taking advantage of time wasted by long wait interrupt handlingExplanation
In a uniprocessor system, multiprogramming increases processor efficiency by taking advantage of time wasted by long wait interrupt handling. This means that when one process is waiting for an I/O operation or for data to be fetched from memory, the processor can switch to another ready process and continue executing instructions. This way, the processor is kept busy and not idle during these waiting periods, resulting in improved efficiency.Rate this question:
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- 29.
As one proceeds down the memory hierarchy (i.e., from inboard memory to offline storage), the following condition(s) apply:
- A.
Increasing access time
- B.
Increasing cost per bit
- C.
Decreasing capacity
- D.
All of the above
Correct Answer
A. Increasing access timeExplanation
As one moves down the memory hierarchy, the access time tends to increase. This means that it takes longer to retrieve data from storage as we move from inboard memory to offline storage. This is because the higher levels of the memory hierarchy, such as cache memory, are closer to the processor and can provide faster access to data. On the other hand, lower levels of the memory hierarchy, such as secondary storage, have slower access times. Therefore, the correct answer is that increasing access time is a condition that applies as we proceed down the memory hierarchy.Rate this question:
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- 30.
Small, fast memory located between the processor and main memory is called:
- A.
WORM memory
- B.
CD-RW memory
- C.
Cache memory
- D.
None of the above
Correct Answer
C. Cache memoryExplanation
Cache memory is a small, fast memory located between the processor and main memory. It is used to temporarily store frequently accessed data and instructions, allowing the processor to quickly access them without having to retrieve them from the slower main memory. This helps to improve the overall performance and efficiency of the computer system. WORM memory and CD-RW memory are not relevant to the given question and are not correct answers.Rate this question:
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- 31.
When a new block of data is written into cache memory, the following determines which cache location the block will occupy:
- A.
Block size
- B.
Cache size
- C.
Write policy
- D.
None of the above
Correct Answer
D. None of the aboveExplanation
mapping functionRate this question:
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- 32.
Direct Memory Access (DMA) operations require the following information from the processor:
- A.
Address of I/O device
- B.
Number of words to be read or written
- C.
Starting memory location to read from or write to
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
DMA operations require the address of the I/O device, the number of words to be read or written, and the starting memory location to read from or write to. This information is necessary for the processor to efficiently transfer data between the I/O device and the memory without involving the CPU in the process. Therefore, all of the given options are correct.Rate this question:
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- 33.
An operating system exploits the hardware resources of one or more processors to provide a set of services to ________________.
Correct Answer
system usersExplanation
An operating system utilizes the hardware resources of one or more processors to offer a range of services to system users. These services can include managing and coordinating the execution of programs, providing an interface for users to interact with the system, handling input and output operations, and ensuring the security and stability of the system. By efficiently utilizing the hardware resources, the operating system enables system users to effectively utilize and interact with the computer system.Rate this question:
- 34.
Each location in Main Memory contains a _______________ that can be interpreted as either an instruction or data.
Correct Answer
binary number valueExplanation
Each location in Main Memory contains a binary number value that can be interpreted as either an instruction or data. This means that the contents of each location in Main Memory can be represented using a series of 0s and 1s, which is the binary number system. These binary values can be interpreted by the computer's processor as either instructions that tell it what operations to perform or as data that needs to be processed or stored.Rate this question:
- 35.
Registers that are used by system programs to minimize main memory references by optimizing register use are called _________________.
Correct Answer
user-visible registersExplanation
User-visible registers are registers that are used by system programs to minimize main memory references by optimizing register use. These registers are directly accessible by the user and can be used to store frequently accessed data or variables, reducing the need to access main memory. By utilizing these registers effectively, system programs can improve performance and efficiency.Rate this question:
- 36.
A special type of address register, required by a system that implements user-visible stack addressing, is called a __________________.
Correct Answer
stack pointerExplanation
A stack pointer is a special type of address register that is necessary for a system that implements user-visible stack addressing. It is used to keep track of the top of the stack, which is the memory location where the next item will be pushed or popped from the stack. The stack pointer is crucial for managing the stack and ensuring that the correct order of operations is maintained.Rate this question:
- 37.
The ____________________ contains the most recently fetched instruction.
Correct Answer
Instruction Register (IR)Explanation
The Instruction Register (IR) is the component that holds the most recently fetched instruction. It is responsible for storing the instruction so that it can be decoded and executed by the processor. The IR acts as a temporary storage location for the instruction while it is being processed, allowing the processor to access and manipulate the necessary data to carry out the instruction.Rate this question:
- 38.
The processing required for a single instruction is called a(n) _______________ cycle.
Correct Answer
instruction cycleExplanation
The processing required for a single instruction is referred to as the "instruction cycle." The instruction cycle encompasses all the steps involved in executing an instruction, including fetching the instruction from memory, decoding it, executing the operation, and storing the result. It is a fundamental concept in computer architecture and is essential for understanding how instructions are executed by a computer's central processing unit (CPU).Rate this question:
- 39.
- A fetched instruction is normally loaded into the __________________.
Correct Answer
instruction register (IR)Explanation
When a computer fetches an instruction, it is typically loaded into the instruction register (IR). The instruction register is a special register that holds the current instruction being executed by the computer's processor. It allows the processor to decode and execute the instruction by providing the necessary information and control signals. By loading the fetched instruction into the instruction register, the processor can access and process the instruction's opcode and operands, enabling the execution of the desired operation.Rate this question:
- 40.
An arithmetic overflow condition resulting from some instructional execution will generate a(n) _________________ interrupt.
Correct Answer
programExplanation
An arithmetic overflow condition resulting from some instructional execution will generate a program interrupt.Rate this question:
- 41.
To accommodate interrupts, a(n) ___________________ is added to the basic instruction cycle.
Correct Answer
interrupt cycleExplanation
To accommodate interrupts, an interrupt cycle is added to the basic instruction cycle. This interrupt cycle allows the processor to temporarily pause its current execution and handle an interrupt request from an external device. By adding this interrupt cycle, the processor can efficiently handle real-time events or urgent tasks without disrupting the normal flow of the instruction cycle. This ensures that important events or tasks can be quickly addressed by the processor, enhancing the overall responsiveness and efficiency of the system.Rate this question:
- 42.
The ___________________________ is part of the information that must be saved prior to the processor transferring control to the interrupt handler routine, and it tells the processor where to return control to the previously interrupted program
Correct Answer
address of the next instructionExplanation
The address of the next instruction is part of the information that must be saved prior to the processor transferring control to the interrupt handler routine. This address is important because it tells the processor where to return control to the previously interrupted program.Rate this question:
- 43.
A drawback to the disable interrupt strategy of dealing with multiple interrupts is that it doesn’t account for __________________.
Correct Answer
prioritization or time-critical needsExplanation
The drawback to the disable interrupt strategy is that it does not consider the prioritization of interrupts or the time-critical nature of certain tasks. This means that when an interrupt occurs, the system may not be able to respond to it immediately if it is currently handling another interrupt or performing a time-critical task. This can lead to delays in processing important interrupts or meeting time-sensitive requirements.Rate this question:
- 44.
- The concept of multiple programs taking turns in execution is known as _______________.
Correct Answer
multiprogrammingExplanation
Multiprogramming is the concept where multiple programs are loaded into the memory at the same time and the CPU switches between them, executing each program for a short period of time. This allows for efficient utilization of the CPU and better overall system performance.Rate this question:
- 45.
The memory design dilemma (regarding cost vs. capacity vs. access time) is solved by employing a(n) __________________.
Correct Answer
: memory hierarchyExplanation
The memory design dilemma, which involves balancing cost, capacity, and access time, is resolved by implementing a memory hierarchy. A memory hierarchy refers to the organization of different levels of memory, each with varying characteristics and capabilities. This allows for efficient and effective memory management, as data can be stored in different levels based on its importance and frequency of access. The memory hierarchy typically consists of multiple levels, including cache memory, main memory, and secondary storage, with each level offering different trade-offs between cost, capacity, and access time. This hierarchy ensures that the system can optimize performance while still being cost-effective.Rate this question:
- 46.
_____________ exploits the principle of locality by providing a small, fast memory between the processor and main memory.
Correct Answer
memory cachingExplanation
Memory caching is a technique that takes advantage of the principle of locality by utilizing a small, high-speed memory between the processor and main memory. This cache memory stores frequently accessed data and instructions, allowing the processor to access them more quickly than if it had to retrieve them from the slower main memory. By keeping a copy of frequently used data close to the processor, memory caching helps to reduce the average memory access time and improve overall system performance.Rate this question:
- 47.
The ____________________ chooses, within the constraints of the mapping function, which block to replace when a new block is to be loaded and all cache slots are already filled.
Correct Answer
replacement algorithmExplanation
The replacement algorithm is responsible for selecting which block to replace in the cache when a new block needs to be loaded and all cache slots are already occupied. It determines the most suitable block to be replaced based on certain constraints set by the mapping function. The chosen block will be evicted from the cache to make room for the new block.Rate this question:
- 48.
Interrupt-driven I/O, although more efficient than simple Programmed I/O, still requires the use of the ________________ to transfer data between memory and an I/O module.
Correct Answer
processorExplanation
Interrupt-driven I/O is a method where the processor is interrupted by the I/O device when it is ready to transfer data. This allows the processor to continue executing other tasks while the data transfer is taking place. However, the processor is still required to facilitate the transfer of data between memory and the I/O module. This involves managing the interrupt requests, handling the interrupt service routine, and coordinating the data transfer process. Therefore, the correct answer is "processor".Rate this question:
- 49.
General purpose computers run most of their programs from rewritable memory, called main memory or RAM which means_____________________
Correct Answer
Random Access MemoryExplanation
General purpose computers run most of their programs from rewritable memory, called main memory or RAM. This type of memory allows for random access, meaning that any piece of data stored in RAM can be accessed directly, without having to read through all the preceding data. RAM is volatile memory, meaning that its contents are lost when the computer is powered off. It is used to store data and instructions that are currently being processed by the CPU, allowing for fast and efficient execution of programs.Rate this question:
- 50.
Main memory is a ______________________ storage device that losses its content when power is turned off or otherwise lost.
Correct Answer
volatileExplanation
Main memory is a volatile storage device that loses its content when power is turned off or otherwise lost. Volatile refers to the temporary nature of main memory, as it is designed to hold data only while the power is on. Once the power is lost, the data stored in main memory is also lost. This is in contrast to non-volatile storage devices, such as hard drives or solid-state drives, which retain their data even when the power is turned off.Rate this question:
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Dec 13, 2009Quiz Created by
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