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WorksheetsDCE SET 2
Total questions: 99
Worksheet time: 50mins
Name
Class
Date
1.
U is an important measurement unit used for an IT cabinet. How long does 1 U equal?
a)
44.45 mm
b)
46.45 mm
c)
45.44 mm
d)
45.46 mm
2.
Which aspect of data center products do customers most focus on usually?
a)
Availability
b)
Cost
c)
Appearance
d)
Easy operation and maitenance (O&M)
3.
Which device in a smart module has the strictest requirement on the loading capacity of floors?
a)
IT cabinet
b)
Uninterruptible power system (UPS) cabinet
c)
Battery cabinet
d)
Network cabinet
4.
What transportation requirements should Huawei's present smart modules meet?
a)
Land transportation
b)
Sea transportation
c)
Air transportation
d)
Sea transportation and land transportation
5.
Which of the following methods cannot be used to check the airtightness of air conditioners?
a)
Perform a leakage test under positive nitrogen pressure
b)
Perform a leakage test under negative vacuum pressure
c)
Perform a leakage test with a halogen leak detector
d)
Perform a leakage test under positive oxygen pressure
6.
How do you adjust the cooling capacity of a chilled water air conditioner?
a)
Adjust the water flow rate through a 2- way valve
b)
Adjust the water flow rate through a 3-way valve
c)
Adjust the fan speed
d)
All the above
7.
Which of the following is not the unit of ventilation?
a)
CFM
b)
m3/h
c)
m3/s
d)
W/m2K
8.
What is the core component that drives refrigerant to flow in the cooling cycle of an air conditioner?
a)
Compressor
b)
Evaporator
c)
Condenser
d)
Throttle
9.
When the dry-bulb temperature is fixed, which of the following cannot reflect the water vapor content in the air?
a)
Humidity ratio
b)
Partial pressure of water vapor
c)
Wet-bulb temperature
d)
Partial pressure of saturation vapor
10.
After the emergency power-off (EPO) switch on the UPS is pressed, which of the following statements is true?
a)
The UPS switches to normal mode
b)
The UPS switches to bypass mode
c)
The UPS switches to battery mode
d)
The UPS does not supply power and the output fails
11.
For the specifications about UPS and high-voltage DC, which of the following statements is true about verifying the load adaptability?
a)
To verify how the product is tolerant of loads: Add or reduce loads abruptly
b)
To verify how much load power is supported by the product. Let the product work with no load, light load, heavy load and full load
c)
To verify whether the product can be tolerant of various types of loads. Let the product work with pure resistive loads, capacitive loads, inductive loads, and rectification
d)
All the above
12.
When a single modular UPS works with light load and one module is overloaded, what logic does the UPS system perfom?
a)
The single UPS transfers to battery mode
b)
The single UPS transfers to bypass mode
c)
The system supplies no output
d)
The inverter in the module shuts down and the UPS works in inverter mode
13.
Two 200 kVA UPSs work in 1+1 redundant parallel mode and the load capacity is 160 kVA. If UPS 1 is faulty, which of the following actions will happen to the UPS parallel system?
a)
UPS 1 exits and UPS 2 works with all loads
b)
Both UPS 1 and UPS 2 transfer to bypass mode
c)
Both UPS 1 and UPS 2 start to be powered by batteries
d)
Neither UPS 1 nor UPS 2 supplies powe
14.
Is a smart module needs to be transported onsite, how many persons at most are required to transport a single cabinet or
a)
2
b)
3
c)
4
d)
5
15.
Which of the following statements is false about the self-production function of all the devices in a smart module?
a)
The devices should perform the short-circuit protection function
b)
To avoid personal injury, products should be prevented from falling over during
c)
Incorrect installation of certain devices will not damage the product or hurt people
d)
Incorrect installation of any devices will cause security risks
16.
Which of the following statements is false about device protection in a smart module?
a)
A dust cover is supplied with the integrated UPS
b)
If a device has doors, the front panel can be eliminated to reduce the cost
c)
The power distribution cabinet (PDC) has a transparent PC baffle plate in the rear
d)
Live parts must be designed as dust-proof
17.
Which of the following statements is false about inventory management of the smart module?
a)
Each replaceable unit should have a serial number (SN)
b)
The network management system (NMS) of the smart module should interwork with the installed Base Management System
c)
All intelligent devices must be attached with electronic labels (E-labels)
d)
An SN is not necessary for a newly changed spare part
18.
Which of the following statements is false about the basic working hours for smart module hardware installation?
a)
The basic working hours vary depending on the smart module configurations
b)
The actual working hours in a region need to be adjusted based on the local work
c)
Basic working hours refer to the project installation cost
d)
Every time when a new version is released, the basic working hours need to be updated
19.
Which of the following statements is false about smart module software upgrade?
a)
All components in the solution that require software upgrade can be upgraded locally and remotely
b)
The smart module allows for upgrading the solution. There is no need to upgrade components separately.
c)
The energy control center (ECC) allows for upgrading an independent intelligent component
d)
All components in the solution must be upgraded locally because this brings higher reliability
20.
What can be used to supply power for the IT devices in a data center?
a)
Mains
b)
Batteries
c)
The UPS or high voltage direct current (HVDC)
d)
A diesel generator (DG)
21.
Which of the following systems does the infrastructure of a large scale data center include?
a)
High- and low-voltage power supply and distribution system
b)
Cabinet and cable tray system
c)
Cooling system
d)
Integrated cabling system
22.
Generally speaking, which aspects does the O&M of a data center focus on?
a)
Safety
b)
Availability
c)
Reliability
d)
Power consumption
23.
Noise has become a concern of the data center, which severely affects user experience. Which of the following measures are good for reducing the noise in an equipment room?
a)
Use high-efficiency and low-noise fans
b)
Take vibration reducing measures when installing devices
c)
Use sound absorption materials on the product design
d)
Provide personal protective equipment (PPE) for workers
24.
Which of the following are normally used by the air conditioner in an equipment room to humidify?
a)
Electrode humidifier
b)
Infrared humidifier
c)
Wet film humidifier
d)
Spray humidifier
25.
How does an air conditioner in an equipment room process air?
a)
Cool air
b)
Dehumidify air
c)
Humidify air
d)
Heat air
26.
What are the three basic thermal transmission modes?
a)
Conduction
b)
Radiation
c)
Convection
d)
Condensation
27.
What functions does the UPS perform to enhance the power supply quality?
a)
Suppress surge
b)
Improve voltage waveform distortion
c)
Suppress the abrupt change of voltage and frequency
d)
Improve current harmonic
28.
Which of the following measures can protect the UPS from damage after being powered on due to dust accumulation and wet dust?
a)
Attach film to the front and rear panels when packing the cabinet
b)
Wrap foam arround insulated gate bipolar transistor (IGBT) pins
c)
Place desiccant inside the cabinet
d)
Add a top outlet fan
29.
The UPS works properly when the mains is available and supplies no power when the mains outage occurs. What are the possible causes?
a)
The UPS does not start and works in bypass mode
b)
The mains is normal
c)
The battery switch is OFF
d)
The inverter does not start in economic control operation (ECO) mode
30.
What are the criteria for determining that the UPS is overloaded?
a)
The apparent power exceeds the system capacity
b)
The active power exceeds the system capacity
c)
The output current exceeds the threshold
d)
Rectifier power limiting
31.
Which of the following components in a standard smart module (FusionModule2000) can be factory-installed?
a)
Rpdu
b)
ECC800
c)
skylight magnetic lock
d)
UPS module
32.
Which of the following reflect the fool-proofing design of a smart module?
a)
Prepare weak-current cables and install terminals on the cables
b)
Components are clamped with each other and the interfaces are fool-proofing
c)
Replace strong-current cables with busbars that can be easily connected
d)
Use silk screens or labels to distinguish the ports of the same type
33.
Which of the following systems in the FusionModule2000 can be managed by the ECC800?
a)
Power distribution system
b)
Equipment room air conditioner
c)
Access control system
d)
Cabinet
34.
What technical features does FusionModule2000 possess?
a)
Cold/hot aisle containment
b)
Accurate air supply and optimized airflow organization
c)
Modular UPS, output PDC, intelligent monitoring and power usage effectiveness (PUE) management
d)
Intelligent compatibility with fire extinguishing system
35.
How wide are the cable throughs used in the FusionModule2000?
a)
200 mm
b)
300 mm
c)
600 mm
d)
800 mm
36.
If the double-door magnetic lock fails to attract the magnet, what should you do to rectify the fault?
a)
Check the circuit
b)
Adjust the magnetic base and door panels to align the magnetic lock with the magnet
c)
Eliminate the gap between the magnet and the double-door magnetic lock
d)
If both ends of the magnet are not level, install spacers
37.
Which of the following components in a smart module have spare parts?
a)
UPS module
b)
Air conditioner compressor
c)
ECC800
d)
Cabinet sealing plate
38.
Which of the following components in a smart module are consumables?
a)
Air filter
b)
Air conditioner humidifier cylinder
c)
Battery
d)
Subrack in the PDC
39.
In the smart module monitoring network, what can be connected to the camera?
a)
ECC800
b)
ECC500
c)
ETH gateway
d)
LAN switch
40.
Which of the following statements are true about the ECC800 and ECC500?
a)
The ECC800 allows the automatic discovery of monitored devices
b)
The ECC500 allows the automatic discovery of monitored devices
c)
Both the ECC800 and ECC500 are factory installed
d)
The ECC500 can manage an equipment room
41.
What slots are there on the side of the ECC800 main control module?
a)
SD card slot
b)
SIM card slot
c)
IC card slot
d)
Micro-SD card slot
42.
To save energy, the UPS needs to work in bypass mode as much as possible, which contributes to high mains usage due to direct mains supply
a)
True
b)
FALSE
43.
The lower the temperature in the equipment room is, the better the IT equipment works
a)
True
b)
FALSE
44.
The main function of the cabinet in a data center is to house IT equipment
a)
True
b)
FALSE
45.
The main function of the NetEco is to monitor and manage the working status of level-1 devices of a data center
a)
True
b)
FALSE
46.
The main function of the UPS in a data center is to supply uninterruptible and purified power to IT equipment
a)
True
b)
FALSE
47.
The main function of the air conditioner in a data center is to produce cool ventilation inside the room.
a)
True
b)
FALSE
48.
Static electricity is very harmful to the IT equipment in a data center, because it will cause data loss and system breakdown or even damage. Therefore, electrostatic discharge (ESD) design is of great importance
a)
True
b)
FALSE
49.
Uptime Institute Tier Certifications are internationally accepted certifications for data centers
a)
True
b)
FALSE
50.
PUE is an important indicator that measures the operating efficiency of a data center. The greater the value, the more energy is saved
a)
True
b)
FALSE
51.
The test on data centers involves multiple professional domains and the test process is very complicated. Therefore, the assessment from various professional domains is necessary and an actual test.
a)
True
b)
FALSE
52.
Uptime Institute Tier Certifications are classified into four tiers. The higher the tier is, the higher the data center availability is
a)
True
b)
FALSE
53.
Assume that a component in the data center solution test is found to have a functional defect. It is unnecessary to submit a trouble ticket to trace the issue if the defect does not affect the use of the component in this version
a)
TRUE
b)
FALSE
54.
Less than 10 ms of power-off time for general IT equipment, such as servers or switches, will not affect services
a)
True
b)
FALSE
55.
If the automatic transfer switch (ATS) switchover time is short, IT loads will not be affected
a)
True
b)
FALSE
56.
If the static transfer switch (STS) switchover time is short, IT loads will not be affected
a)
True
b)
FALSE
57.
According to the data center design plan, the power density of a single cabinet should be as high as possible. This contributes to high efficiency and small footprint, and makes it unnecessary to consider cost-effectiveness
a)
True
b)
FALSE
58.
If you vacuumize a cooling system from both the suction vent and discharge vent on the compressor, the air from every corner in the cooling system can be extracted
a)
True
b)
FALSE
59.
When connecting copper pipes with the same diameter, the opening of one copper pipe is usually expanded to match the outer diamater of the other copper pipe. When connecting copper pipes with different diamaters, if the opening of one copper pipe needs to be shrunk to match the inner diameter of the other copper pipe, the length of the shrunk part should be greater than the length
a)
True
b)
FALSE
60.
The distance between the solder-bumps not welded at the same time in process should be greater than 40 mm to prevent the welding on the next solder-bump affecting the previous solder-bump
a)
True
b)
FALSE
61.
The equipment room air conditioner dehumidifies by cooling the air to a temperature below dew point
a)
True
b)
FALSE
62.
The total cooling capacity of an equipment room air conditioner is the sum of sensible heat and latent heat
a)
True
b)
FALSE
63.
The thermal loads on cabinet serves are mainly sensible heating loads
a)
True
b)
FALSE
64.
The air conditioner outdoor unit should be protected to at least
a)
True
b)
FALSE
65.
A filter is necessary before throttling components such as capillary tubes, electronic expansion valves and thermal expansion valves. This prevents impurities blocking in tiny channels and affecting the normal operating
a)
True
b)
FALSE
66.
Capillary tubes should be fixed on non-vibrating components, which prevents the tubes from being broken caused by vibration
a)
True
b)
FALSE
67.
Damp air consists of dry air and water vapor and has great impact on human body and equipment although the water vapor content is
a)
True
b)
FALSE
68.
Both of the air temperature and relative humadity incerase after the air goes through an electric heater
a)
True
b)
FALSE
69.
To improve the overall heat exchange efficiency and sensible heat ratio of the equipment room air conditioner, high supply water temperature has become a trend in the chilled water air conditioner industry
a)
True
b)
FALSE
70.
In the leakage test with nitrogen, the pressure preservation time is often extended to 24 hours to increase the leakage, which ensures that the nitrogen pressure can be measured with the precision of the press gauge
a)
True
b)
FALSE
71.
Before selling a smart module, we need to conduct a pre-sales site survey, design solutions and provide accurate Bill of Quantity (BOQ). After sales site survey can be reduced.
a)
True
b)
FALSE
72.
The southbound intelligent components (except cameras and AC actuators) in the standard configuration of a smart module can be automatically identified and access to the ECC800 after powered on with no software configured
a)
True
b)
FALSE
73.
It is unnecessary to compile the software of old version in the software with new version in the smart module
a)
TRUE
b)
FALSE
74.
The switch (MCB) on the PDC can be hot-swap switch for ease of replacement
a)
TRUE
b)
FALSE
75.
Smart modules are of energy infrastructure and do not involve customers core services, so they do not have to meet the requirements of Huawei's cyber
a)
TRUE
b)
FALSE
76.
For each time of reconstruction, warning notification must be released
a)
TRUE
b)
FALSE
77.
The smart module service app can be used in preventive maintenance inspection (PMI)
a)
TRUE
b)
FALSE
78.
The modular construction mode of a data center refers to that interfaces are standard and all subsystems are standard and
a)
TRUE
b)
FALSE
79.
Components in the smart module support top cabling or bottom cabling
a)
TRUE
b)
FALSE
80.
Air conditioners in the smart module support only top piping
a)
TRUE
b)
FALSE
81.
Huawei FusionModule2000 V500R002 can work in underfloor flow mode
a)
TRUE
b)
FALSE
82.
Huawei FusionModule2000 modular data center solution covers certain indoor application
a)
TRUE
b)
FALSE
83.
Dual-row aisle containment with pipes routed from the top covers two configurations: cold aisle containment and hot aisle containment
a)
TRUE
b)
FALSE
84.
The battery installation requirements are as follows: Batteries are arranged neatly, and cables are routed properly and connected reliably. This screws at battery terminals are tightened.
a)
TRUE
b)
FALSE
85.
The unit of UPS capacity is Kva
a)
TRUE
b)
FALSE
86.
The UPS consists of a power factor correction (PFC) rectifier and an inverter. The rectifier performs AC-DC or DC-DC conversion on the mains and battery inputs and boosts the voltage to the bus voltage. Then the inverter converts DC inputs into AC sine wave.
a)
TRUE
b)
FALSE
87.
Before setting the smart module system, power on and commission each UPS and ensure that they can properly switch between working modes, including normal mode, bypass mode and battery
a)
TRUE
b)
FALSE
88.
To connect the NetCol5000 25 kW half-sized air conditioner to the monitoring network, you only need to connect the air conditioner to the ETH socket using a network
a)
TRUE
b)
FALSE
89.
People working in an equipment room must wear ESD shoes to prevent the static electricity from human bodies. The floor should also be an ESD floor
a)
TRUE
b)
FALSE
90.
When setting up a module in the NetEco, the number of cabinets can be increased when vacant cabinet places are insufficient even if the number of cabinets is preset
a)
TRUE
b)
FALSE
91.
When setting up a module in the ECC800, the number of cabinets cannot be increased when vacant cabinet places are insufficient if the number of cabinets is preset
a)
TRUE
b)
FALSE
92.
The surge protective device (SPD) can completely suppress all overvoltage and overcurrent
a)
TRUE
b)
FALSE
93.
If the rated current through an external input or output power cable for a device is less than 30 A, a one hole OT terminal should be used as the input terminal and the terminal should be prevented from rotating. If the rated current is greater than or equal to 30 A, a two hole OT terminal can also be used as the input terminal
a)
TRUE
b)
FALSE
94.
When working at a height between 1.5 meters and 2 meters, you need to wear a half body safe belt that is generally not used for protecting you from falling off
a)
TRUE
b)
FALSE
95.
The FusionModule2000 modular data center solution covers all outdoor application scenarios
a)
TRUE
b)
FALSE
96.
The access controller can be used together with the sliding door and revolving door of a smart module
a)
TRUE
b)
FALSE
97.
All skylight magnetic lock fasteners must be installed at the equivalent position on the same side of skylight connective plates.
a)
TRUE
b)
FALSE
98.
A cabinet should be installed reliably and securely, screws tightened and adjustable feet
a)
TRUE
b)
FALSE
99.
A smart module is designed in accordance with the Chinese national standard GB50174
a)
TRUE
b)
FALSE
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