Question 1

The usual BUS structure used to connect the I/O devices is __________
A)star bus structure
B)multiple bus structure
C)single bus structure
D)node to node bus structure

Accepted Answer

The usual BUS structure used to connect the I/O devices is the single bus structure. This is because it provides a simple and cost-effective way to connect multiple devices using a single set of wires or tracks, allowing all devices to communicate with each other through a shared channel.

Question 2

In intel's IA-32 architecture there is a separate 16 bit address space for the I/O devices.
A)false
B)true

Accepted Answer

In Intel's IA-32 architecture, there is indeed a separate 16-bit address space specifically for I/O devices, allowing for direct communication with peripheral devices.

Question 3

The advantage of I/O mapped devices to memory mapped is __________
A)the former offers faster transfer of data
B)the devices connected using i/o mapping have a bigger buffer space
C)the devices have to deal with fewer address lines
D)no advantage as such

Accepted Answer

I/O mapped devices have the advantage of requiring fewer address lines because they use a separate address space from the memory, which simplifies the addressing scheme for peripherals.

Question 4

The system is notified of a read or write operation by __________
A)appending an extra bit of the address
B)enabling the read or write bits of the devices
C)raising an appropriate interrupt signal
D)sending a special signal along the bus

Accepted Answer

The answer of The system is notified of a read...

Question 5

To overcome the lag in the operating speeds of the I/O device and the processor we use __________
A)buffer spaces
B)status flags
C)interrupt signals
D)exceptions

Accepted Answer

The answer of To overcome the lag in the operating...

Question 6

The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is?
A)exceptions
B)signal handling
C)interrupts
D)dma

Accepted Answer

Interrupts are used for synchronizing the processor with the I/O device. When the I/O device is ready, it sends an interrupt signal to the processor, indicating it needs attention.

Question 7

The method which offers higher speeds of I/O transfers is __________
A)interrupts
B)memory mapping
C)program-controlled i/o
D)dma

Accepted Answer

DMA (Direct Memory Access) allows the transfer of data between memory and a peripheral device without continuous intervention by the CPU, enabling faster data transfer rates compared to methods that require more CPU intervention, such as interrupts and program-controlled I/O. Memory mapping is a method of accessing memory, but it does not inherently offer higher speeds of I/O transfers compared to DMA.

Question 8

The process wherein the processor constantly checks the status flags is called as
A)polling
B)inspection
C)reviewing
D)echoing

Accepted Answer

Polling is the process where the processor repeatedly checks the status of a device or flag to see if it is ready for a task or operation, such as input/output. This is done instead of or in addition to interrupt-driven programming.

Question 9

Which of the following is incorrect?
A)a layered-style program is divided into an array of modules or layers
B)each layer provides services to the layer "below" and makes use of services provided by the layer "above"
C)all of the mentioned
D)none of the mentioned

Accepted Answer

The correct statement is the opposite: each layer provides services to the layer "above" it and makes use of services provided by the layer "below" it.

Question 10

What is Relaxed Layered Style?
A)each layer can be constrained to use only the layer directly below it
B)sometimes this constraint is relaxed slightly to allow each layer to use all the layers below it
C)all of the mentioned
D)none of the mentioned

Accepted Answer

The Relaxed Layered Style allows for a slight relaxation of the strict layered architecture by permitting each layer to interact with not just the immediate layer below it, but any of the layers below it. This flexibility can simplify interactions and reduce the complexity of passing information through multiple layers.

Question 11

Which of the following is correct?
A)module a uses module b if a correct version of b must be present for a to execute correctly
B)module a calls (or invokes ) module b if b triggers execution of a
C)all of the mentioned
D)none of the mentioned

Accepted Answer

Module A uses Module B if a correct version of B must be present for A to execute correctly. This is a definition of a dependency relationship where the correct operation of one module (A) is contingent upon the presence and proper functioning of another module (B).

Question 12

Which of the following is true with respect to layered architecture?
A)each layer is allowed to depend on the layer above it being present and correct
B)a layer may call other layers above and below it, as long as it uses them
C)all of the mentioned
D)none of the mentioned

Accepted Answer

In a layered architecture, each layer is designed to only depend on the layer directly below it, not above it or multiple layers below. This ensures a clear separation of concerns and simplifies maintenance and scalability.

Question 13

What is Onion diagram illustrates?
A)it illustrates the connection between the layers in communications protocols, such as the international standards organization open systems interconnection (iso osi) model,or the layers in user interface and windowing systems, such as the x window system
B)it often illustrates operating system layers, with the kernel at the core
C)all of the mentioned
D)none of the mentioned

Accepted Answer

The answer of What is Onion diagram illustrates?
A)it illustrates the...

Question 14

In particular, layers have which of the following characteristics?
A)layers are by definition highly cohesive, thus satisfying the principle of cohesion
B)layers doesn't support information hiding
C)layers are constrained to use only above layers
D)all of the mentioned

Accepted Answer

Layers are designed to be highly cohesive, which means they group related functionalities together, satisfying the principle of cohesion.

Question 15

What are the drawbacks for Layers?
A)it is often necessary to pass data through many layers, which can slow performance significantly
B)layers support information hiding
C)multi-layered programs can be hard to debug because operations tend to be implemented through a series of calls across layers
D)none of the mentioned

Accepted Answer

The answer of What are the drawbacks for Layers?
A)it is...

Question 16

Which of the following is correct?
A)layers are not strongly coupled to the layers above them
B)each layer is strongly coupled only to the layer immediately below it
C)overall layered-style architectures are loosely coupled
D)all of the mentioned

Accepted Answer

Layered architectures are designed so that each layer is strongly coupled only to the layer immediately below it, leading to an overall structure that is loosely coupled. This allows for easier maintenance and scalability.

Question 17

Which of the following is one of the unique attributes of Cloud Computing?
A)utility type of delivery
B)elasticity
C)low barrier to entry
D)all of the mentioned

Accepted Answer

Cloud computing is characterized by all of the mentioned attributes: utility type of delivery, elasticity, and low barrier to entry, making it a flexible and scalable solution for businesses and individuals.

Question 18

Point out the correct statement.
A)service level agreements (slas) is small aspect of cloud computing
B)cloud computing does not have impact on software licensing
C)cloud computing presents new opportunities to users and developers
D)all of the mentioned

Accepted Answer

Cloud computing indeed presents new opportunities to users and developers by offering scalable and flexible resources over the internet, enabling innovation, cost reduction, and enhanced efficiency.

Question 19

Applications that work with cloud computing that have low margins and usually low risk are __________    
A)high touch
B)low touch
C)moderate touch
D)all of the mentioned

Accepted Answer

Low touch applications are those that work with cloud computing and typically have low margins and usually low risk, requiring minimal human intervention or customer interaction.

Question 20

A service that concentrates on hardware follows the ___________  as a Service model.
A)iaas
B)caas
C)paas
D)all of the mentioned

Accepted Answer

Infrastructure as a Service (IaaS) focuses on providing virtualized computing resources over the internet, which includes hardware aspects like servers, storage, and networking hardware.

Quiz 16: I/O Devices and Cloud Computing: Structure, Architecture, and Service Models

The usual BUS structure used to connect the I/O devices is __________

In intel's IA-32 architecture there is a separate 16 bit address space for the I/O devices.

The advantage of I/O mapped devices to memory mapped is __________

The system is notified of a read or write operation by __________

To overcome the lag in the operating speeds of the I/O device and the processor we use __________

The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is?

The method which offers higher speeds of I/O transfers is __________

The process wherein the processor constantly checks the status flags is called as

Which of the following is incorrect?

What is Relaxed Layered Style?

Which of the following is correct?

Which of the following is true with respect to layered architecture?

What is Onion diagram illustrates?

In particular, layers have which of the following characteristics?

What are the drawbacks for Layers?

Which of the following is correct?

Which of the following is one of the unique attributes of Cloud Computing?

Point out the correct statement.

Applications that work with cloud computing that have low margins and usually low risk are __________

A service that concentrates on hardware follows the ___________ as a Service model.