T Level 7.7a security systems

What is the primary function of security cameras as mentioned in the text?

• To provide entertainment

• To relay images to a control room

• To enhance building aesthetics

• To record audio conversations

Where are security cameras typically mounted according to the text?

• On vehicles

• On the exterior or within a building

• On streetlights

• On trees

What type of camera is shown in the diagram?

• Wired camera

• Digital camera

• Wireless camera

• Analog camera

What does the iCam DVR connect to in the diagram?

• AC adapter

• Receiver

• Desktop or notebook PC

• Wireless camera

What type of signals are transmitted from the cameras to the iCam DVR?

• Audio signals

• Video signals

• Internet signals

• Power signals

How do fire alarms work according to the text?

• By detecting water

• By detecting smoke or heat

• By detecting sound

• By detecting light

What additional action can fire alarms perform besides activating an extinguishing system?

• Alert the police

• Alert the fire service

• Alert the medical service

• Alert the security service

What is the primary purpose of active fire protection systems?

• To prevent fire

• To alert people to fire

• To extinguish fire

• To detect fire

What is the purpose of the LED flasher in a fire protection system?

• To provide light during a power outage

• To visually alert occupants of a fire

• To control the water sprinkler

• To detect smoke

Which component detects heat in a fire protection system?

• Smoke detector

• Heat detector

• Fire alarm control panel

• LED flasher