Gisco Interview Questions, Process, and Tips for Experienced

To find a loop fault, use a TDR to measure the distance to the fault and analyze the waveform for reflections.

• Use a Time Domain Reflectometer (TDR) to measure the distance to the fault by sending a pulse down the cable and analyzing the reflections.

• Look for anomalies in the waveform that indicate a fault, such as sudden changes in impedance or unexpected reflections.

• Use the TDR to pinpoint the exact location of the fau...read more

Faults in fire alarm systems can include power failures, faulty wiring, sensor malfunctions, and false alarms.

• Power failures can cause the fire alarm system to not function properly.

• Faulty wiring can lead to incorrect signals being sent to the control panel.

• Sensor malfunctions may result in the system not detecting smoke or fire accurately.

• False alarms can be triggered by dust or insects in the sensors.

• Regular maintena

The procedure of a Fire Pump Technician involves inspecting, testing, and maintaining fire pumps to ensure their proper functioning.

• Inspecting fire pumps for any signs of damage or malfunction

• Testing the performance of fire pumps by conducting flow tests

• Maintaining fire pumps by lubricating moving parts and replacing worn-out components

• Troubleshooting and repairing any issues with fire pumps

• Documenting all inspections,...read more

There are five types of fire: Class A, Class B, Class C, Class D, and Class K.

• Class A fires involve ordinary combustible materials like wood, paper, and cloth.

• Class B fires involve flammable liquids like gasoline, oil, and grease.

• Class C fires involve energized electrical equipment.

• Class D fires involve combustible metals like magnesium and titanium.

• Class K fires involve cooking oils and fats.

There are several types of sprinklers used in fire fighting.

• There are four main types of sprinklers: upright, pendant, sidewall, and concealed.

• Upright sprinklers are installed in an upright position and spray water in a hemispherical pattern.

• Pendant sprinklers are installed hanging down from the ceiling and spray water in a circular pattern.

• Sidewall sprinklers are mounted on the side walls and spray water in a quarter-...read more

A sprinkler system is a fire protection system that uses water to extinguish or control fires.

• Sprinkler systems are designed to detect and suppress fires automatically.

• They consist of a network of pipes, sprinkler heads, and control valves.

• When a fire is detected, the sprinkler heads release water to extinguish or control the fire.

• Sprinkler systems can be found in various settings such as commercial buildings, warehous...read more

The distance between sprinklers depends on the type of sprinkler system and the specific requirements of the building.

• The distance between sprinklers is determined by the design of the sprinkler system.

• Sprinkler spacing is influenced by factors such as the type of occupancy, ceiling height, and water supply.

• In general, sprinklers are typically spaced between 10 to 20 feet apart.

• However, high-hazard occupancies may requ...read more

The pipe used in fire fighting systems is typically made of steel or a combination of steel and plastic.

• Steel pipes are commonly used in fire fighting systems due to their strength and durability.

• Steel pipes can withstand high pressure and extreme temperatures, making them suitable for fire suppression.

• Some fire fighting systems also use pipes made of a combination of steel and plastic, known as composite pipes.

• Composi...read more