WorksheetsNet+ 2.5 OB Questions
Total questions: 30
Worksheet time: 16mins
What is a datacenter primarily used for?
Storing personal items
Provisioning servers
Hosting events
Manufacturing goods.
A rack is a specially configured steel shelving system designed for (a)
displaying art
holding plants
The concept of installing more computing appliances in a smaller space is referred to as (a) . A) density B) volume C) capacity D) efficiency.
density
volume
capacity
efficiency
What is the unit of measurement for rack height?
Inches
U
Feet
Meters
Rack height is measured in 'U' units of (a) .
1.75 inches
2.5 cm
3 feet
4.45 meters
Match the following features of server racks.
Can be bolted together
freestanding
Smaller cabinet units
wall-mounted
Slide out devices
rail kits
3 feet (1 meter)
clearance needed
Most racks are designed to be (a) .
Wall-mounted
Freestanding
Portable
Fixed
What is the purpose of a hot aisle/cold aisle layout in data centers?
To maximize cooling efficiency
To increase server speed
To reduce power consumption
To enhance security
In a hot aisle/cold aisle layout, multiple rows should be placed (a) to maximize cooling.
front to back
back to back
side by side
top to bottom
Match the following terms with their descriptions:
Covers unused rack slots
Blanking plates
Expels hot air on the same side as port interfaces
Port-side exhaust
Allows ports to face the front of the rack
Port-side intake
Rack-mounted appliances are usually designed with intake fans on the front to draw in (a) .
hot air
humid air
dry air
What does the acronym HVAC stand for?
Heating, Ventilation, Air Conditioning
High Voltage Air Conditioning
Heat Ventilation and Cooling
Humidity and Ventilation Control
Sensors are used to monitor conditions such as excessive temperatures, fan speeds, and (a) intrusion.
chassis
network
software
hardware
Fill in the blank: An HVAC system uses (a) sensors to measure humidity.
temperature
moisture
pressure
light
What is a necessary condition for computer systems to function properly in terms of electrical supply?
Frequent power outages
Stable power supply free from outages
Voltage spikes and surges
Under-voltage events.
Computer systems need a stable power supply, free from outages, voltage dips, and (a) .
Voltage spikes
Water leaks
Fire hazards
Dust accumulation
What is the formula to calculate wattage?
Voltage * Current
Voltage / Current
Current / Voltage
Voltage + Current
Fill in the blank: A single 30 amp circuit could supply (a) racks.
One
Two
Three
Four
What is the primary function of an uninterruptible power supply (UPS)?
To provide a permanent power source
To provide a temporary power source in the event of a power failure
To increase the power output of a system
To decrease the power consumption of a system.
A UPS comprises a bank of (a) and their charging circuit plus an inverter to generate AC voltage.
capacitors
resistors
batteries
transformers
Match the following UPS characteristics with their descriptions.
Different models support different outputs
power outputs
May range from minutes to hours
runtimes
From desktop to rack mounted.
form factors
Which of the following is a basic element of fire safety?
Well-marked fire exits
Building design that allows fire to spread
Lack of smoke detection systems
No emergency evacuation procedure.
The fire triangle consists of heat, oxygen, and (a) . A) Water B) Fuel C) Carbon Dioxide D) Smoke.
Water
Fuel
Carbon Dioxide
Smoke
Match the following types of fire suppression systems with their characteristics:
Dry-pipe
Only fills with water when an alarm is triggered
Pre-action
Gas-based, leaves no residue
Halon
Water enters only when sprinklers elsewhere are triggered
Clean agent
Non-toxic gases like INERGEN.
Class C extinguishers use (a) and can be used where the risk of electric shock makes other types unsuitable.
Water
Foam
Powder
What is one effect of using CO2 in an area?
Increases oxygen levels
Depletes oxygen levels
Increases temperature
Depletes nitrogen levels
CO2 can be used to (a) the concentration of oxygen in an area.
increase
deplete
stabilize
enhance
A company, which is located in a coastal town, retrofitted an office building for a new data center. The underground fiber optics were brought in and connected to the switches in the basement network MDF. A server data center was built on the fifth floor with the two rooms vertically connected by fiber optics.
Which of the following types of environmental sensors is most needed?
Temperature sensor in the network MOF
Water sensor in the network MDF
Temperature sensor in the data center
Water sensor in the data center
The __________ draws heat________from the CPU.
monitor, away
heatsink, away
heatsink, towards
RAM, away
A company is upgrading the network switches at its backup data center, which is geographically separated from the main data center. The company hired a contractor to physically install and cable the new switches in their cabinets. Which of the following should the network engineering team provide to ensure the job is completed accurately?
Rack diagram
IDF diagram
Site survey
Logical diagram
