What is an important feature of the PHP scripting language?
Answer : D
PHP's Cross-Platform Nature:PHP originated for server-side web development, but also has a command-line interface (CLI) enabling its use for scripts and automation tasks.
Other Options:
Somelanguages are OS-specific (but less frequent with modern scripting languages) .
Many languages work in weborcommand line, notbothlike PHP.
References:
PHP (Introduction):Overviews mentioning its dual role in server-side web applications and as a general-purpose scripting language.
PHP CLI:Documentation on the command-line interface for PHP.
Question 3
What software is typically stored in ROM and is used to initialize a device?
Answer : A
Firmware Definition:Firmware is a type of software embedded in hardware devices. It provides low-level instructions that control the basic operations and initialization of the device.
ROM Storage:Firmware is typically stored in Read-Only Memory (ROM) or other forms of non-volatile memory, meaning it persists even when the device is powered off.
Functions:
Booting:Initiates the hardware and loads the operating system.
Hardware Control:Provides an interface between the hardware and the operating system.
BIOS:The firmware on PCs is often referred to as BIOS (Basic Input/Output System).
Which one of the following location tracking technologies is most energy efficient in typical implementations?
Answer : A
BLE Beacon Power Efficiency:Bluetooth Low Energy (BLE) beacons are designed for low power consumption.Their primary function is to periodically broadcast short data packets (advertising their presence).
Other Technologies:
Cellular:More power-hungry due to long-range communication and complex protocols.
GPS:Power intensive,especially when actively tracking location.
Wi-Fi:
Question 5
You are implementing a smart office wireless solution for a small business. The business owner indicates that It is acceptable to use consumer-targeted wireless devices. What is a common negative attribute of consumer-targeted smart home or smart office devices?
Answer : B
Consumer Smart Devices Limitation:Many consumer-oriented smart devices are designed for simplicity and cost-effectiveness, leading to reliance on the crowded 2.4 GHz band.
Consequences:
High Interference:Increased potential for interference from Wi-Fi and other 2.4 GHz devices.
Limited scalability:Performance and reliability may degrade in busy wireless environments.
Question 6
A Wi-Fi enabled weight scale is an example of what kind of health IoT device?
Answer : C
Health IoT Device Categories:
Wearable:Devices worn on the body (smartwatches, fitness trackers).
Non-wearable:Devices used without being worn (smart scales, connected medical equipment).
Health IoT:Resources on healthcare + IoT will illustrate device types.
Question 7
You have been asked to consider smart building opportunities for your organization. Which one of these is a benefit of smart building technology?
Answer : B
Smart Building Core Benefit:Smart building technologies primarily aim to optimize a building's operational efficiency through automation and data-driven insights.
Efficiency Examples:
Energy Management:Automated lighting and HVAC control based on occupancy and environmental conditions.
Maintenance:Predictive maintenance through IoT sensors reduces downtime.
Space Utilization:Optimization of space allocation based on real-time usage patterns.
All Official Question Types