WorksheetsInput/Output
Total questions: 20
Worksheet time: 7mins
______ is the interface to one or more peripheral devices by tailored data links.
Processor
Memory module
I/O module
System bus
Why peripherals are not connected to the system bus directly?
Peripherals use different data formats and data lengths
Data transfer rate in devices are much slower
Peripherals have different ways of operations
All of the above
Printer is an example of which category of external devices?
Human readable
Information
Machine readable
Communication
READY/NOT-READY to show whether the device is ready for data transfer is indicated by _______.
data bits
control signals
status signals
buffer
Which device converts data from electrical to other forms of energy during output?
Control logic
Buffer
Peripheral
Transducer
Paper jam reported by the printer is handled by which function of the I/O module?
Device communication
Error detection
Control and timing
Processor communication
Which I/O module function temporarily stores data to balance device and memory speeds?
Device communication
Data buffering
Control of data transfer
Processor communication
The processor uses the _____ to issue commands to the I/O module.
control lines
data lines
address lines
status lines
Which I/O command transmits data item from the data bus to the peripheral?
Test
Control
Write
Read
A(n) _____ allows an I/O device to send/receive data directly to/from memory, bypassing CPU.
external device control logic
DMA controller
disk controller
I/O logic
With _____, data are exchanged between the processor and the I/O module, resulting in wasteful of processor time.
interrupt-driven I/O
direct memory access
programmed I/O
All of the above
A magnetic-tape unit may be instructed to rewind. This is an example of which I/O command?
Read
Test
Control
Write
With ____, there is a single address space for memory locations and I/O devices.
isolated I/O
memory-mapped I/O
Both isolated I/O and memory-mapped I/O
Neither isolated I/O nor memory-mapped I/O
Before USB, many peripheral devices would attach to a computer over serial and parallel ports.
True
False
USB 4 supports speeds up to 40Gbps.
True
False
FireWire 800 supports transfer rates up to 400 Mbps.
True
False
IEEE 1394, commonly known as FireFire, is a standard connection type for many electronic devices.
True
False
The Small Computer System Interface (SCSI) standard is newer and more popular than FireWire and USB.
True
False
All USB-C ports support Thunderbolt on Windows PCs.
True
False
Do you have a better understanding of the chapter about I/O?
Yes
No
Maybe
Not sure
