COP4600 Quizzes Review Exam
Questions and Answers Graded A+
Block devices allow random access to data, such as in SSDs. - Correct answer-True
The burst data rate of an 1/O device is its average transfer rate over time. - Correct
answer-False
Memory-Mapped I/O (MMIO) uses separate memory spaces for ports and device
memory. - Correct answer-False
Direct Memory Access (DMA) allows devices to transfer data directly to memory
without major involvement of the CPU. - Correct answer-True
Dedicated channels, such as PCle slots, optimize system performance by providing
high-performance, exclusive links for data transfer between the CPU/memory
subsystem and specific devices like SSDs. - Correct answer-True
In modern operating systems, data exchange between the user and an 1/O device
always bypasses the kernel. - Correct answer-False
Programmed I/O with polling requires the CPU to continuously check if a device is
ready for data transfer. - Correct answer-True
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, Interrupts allow a device to notify the CPU when it is ready, which is more
efficient than polling. - Correct answer-True
In Direct Memory Access (DMA), the CPU directly manages data transfers
between memory and the 1/O device. - Correct answer-False
In a programmed I/O interrupt-driven approach, the CPU is blocked until the
device has completed its task. - Correct answer-False
The first human-computer interface devices consisted of a keyboard and a printer,
commonly referred to as teletype (TTY) terminals. - Correct answer-True
Dumb terminals are so named because they can perform computations
independently of the mainframe. - Correct answer-False
A computer mouse typically sends data using three bytes per input packet, which is
sent upon movement or change. - Correct answer-True
Infrared touchscreens are durable and support multi-touch functionality but
perform poorly in direct sunlight. - Correct answer-True
ASClI and Unicode are two different encoding standards where Unicode typically
uses 8 bits and ASCIl uses 16 bits. - Correct answer-False
A file system helps to locate free storage space and allows multiple processes to
access stored information concurrently. - Correct answer-True
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Questions and Answers Graded A+
Block devices allow random access to data, such as in SSDs. - Correct answer-True
The burst data rate of an 1/O device is its average transfer rate over time. - Correct
answer-False
Memory-Mapped I/O (MMIO) uses separate memory spaces for ports and device
memory. - Correct answer-False
Direct Memory Access (DMA) allows devices to transfer data directly to memory
without major involvement of the CPU. - Correct answer-True
Dedicated channels, such as PCle slots, optimize system performance by providing
high-performance, exclusive links for data transfer between the CPU/memory
subsystem and specific devices like SSDs. - Correct answer-True
In modern operating systems, data exchange between the user and an 1/O device
always bypasses the kernel. - Correct answer-False
Programmed I/O with polling requires the CPU to continuously check if a device is
ready for data transfer. - Correct answer-True
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Interrupts allow a device to notify the CPU when it is ready, which is more
efficient than polling. - Correct answer-True
In Direct Memory Access (DMA), the CPU directly manages data transfers
between memory and the 1/O device. - Correct answer-False
In a programmed I/O interrupt-driven approach, the CPU is blocked until the
device has completed its task. - Correct answer-False
The first human-computer interface devices consisted of a keyboard and a printer,
commonly referred to as teletype (TTY) terminals. - Correct answer-True
Dumb terminals are so named because they can perform computations
independently of the mainframe. - Correct answer-False
A computer mouse typically sends data using three bytes per input packet, which is
sent upon movement or change. - Correct answer-True
Infrared touchscreens are durable and support multi-touch functionality but
perform poorly in direct sunlight. - Correct answer-True
ASClI and Unicode are two different encoding standards where Unicode typically
uses 8 bits and ASCIl uses 16 bits. - Correct answer-False
A file system helps to locate free storage space and allows multiple processes to
access stored information concurrently. - Correct answer-True
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
