Vero o Falso

Question 1

In the context of rack servers, 1U is 44.45cm

Answer 1

False

One rack unit (1U) is equal to 1.75 inches or approximately 4.45 cm

Question 2

Warehouse-scale computers run a large number of very small applications

Answer 2

False

WSC run a small number of very large applications (or internet service)

Question 3

Racks shelves are used to store servers and other IT equipments

Answer 3

True

Question 4

In warehouse-scale computers the software running on these systems executes on clusters of hundreds to thousands of individual servers

Answer 4

True

Question 5

Warehouse-scale computers belong to a single organization, use a relatively homogeneous hardware
and system software platform, and share a common systems management layer

Answer 5

True

Question 6

All faults occurring in a system cause a failure of the system

Answer 6

False

Question 7

In a data center for AI, servers includes both general purpose CPUs and accelerators (such as
GPUs, TPUs and FPGAs)

Answer 7

True

Question 8

NVlink is a low-bandwidth connection among Graphical Processing Units

Answer 8

False

It is an high-bandwidtth connection

Question 9

Graphical Processing Units support data-parallel computation

Answer 9

True

Question 10

A deep neural-network cannot be trained on multiple Graphical Processing Units

Answer 10

False

Question 11

Tower servers can be cooled easily

Answer 11

True

Question 12

Racks servers have a cable management that is more complex than Tower ones

Answer 12

False

Cable management is more complicated in tower servers

Question 13

Racks shelves may contain switches

Answer 13

True

Question 14

The need for a constant Internet connection is one of the advantages of data centers

Answer 14

False

It is a disadvantage

Question 15

The program in warehouse-scale computing is a service provided by internet

Answer 15

True

Question 16

Traditional data centers can host hardware and software for multiple organizational units or different companies

Answer 16

True

Question 17

Data centers are buildings where multiple servers and communication units are co-located

Answer 17

True

Question 18

Servers in data centers are like regular personal-computers with the same form factor

Answer 18

False

They have different form factors and hardware

Question 19

In datacenter storage context, DAS means Distributed Application Storage

Answer 19

False

Direct Attached Storage

Question 20

In the context of SSDs, Pages are the smallest unit that can be erased

Answer 20

False

Block, which consists in multiple pages

Question 21

Seek delay is the time to move the read head to the desired track

Answer 21

True

Question 22

In the context of SSDs, Pages are the smallest unit that can be read/written

Answer 22

True

Question 23

In the context of SSDs, Blocks are the smallest unit that can be read/written

Answer 23

False

Pages are the smallest units that can be written/read

Question 24

Rotational delay is the time needed by the disk to place the desired sector under the read head

Answer 24

True

Question 25

Traditional data centers typically host a large number of relatively small- or medium-sized applications

Answer 25

True

Question 26

Rack, blade and towers are form factor of servers in data centers

Answer 26

True

Question 27

An Edge Computing system provide higher performance (in terms of memory and computation) than Internet-of-Things devices

Answer 27

True

Question 28

Warehouse-scale computers comprise important components related to power delivery, cooling, and building infrastructure

Answer 28

True

Question 29

Rack servers need additional cooling systems due to their high overall component density

Answer 29

True

Question 30

In datacenter network, TOR refers to top-of-rack switches

Answer 30

True

Question 31

Is the Java Runtime Environment an example of system virtual machine?

Answer 31

False

Question 32

Tower servers consumes less space than rack and blade

Answer 32

False | They consume more space since thery are like PCs

Question 33

Data centers are well suited for real-time decisions in autonomous car context

Answer 33

False | They are not suited for fast decisions