2026 CWISA-103 Question Bank: Free PDF Download Recently Updated Questions
CWISA-103 Certification Exam Dumps with 82 Practice Test Questions
NEW QUESTION # 30
Why is it important to adhere to safety and building codes when installing equipment?
- A. It prevents equipment from falling to the floor and being damaged because of the Impact
- B. It protects the life and health of Installers and end users during installation and after the system Is deployed
- C. It is an insurance requirement designed to reduce insurance rates and reduce Incident reports against Insurance policies
- D. They can be ignored as they are regulations designed for other industries
Answer: B
Explanation:
* Primary Concern: Safety: Building codes and safety regulations are there to prevent injury and accidents. This includes potential harm from improper equipment installation (falling objects, electrical hazards, etc.).
* Legal and Ethical Responsibility: Organizations have an obligation to provide a safe workplace for employees and protect the well-being of end-users.
* Insurance Considerations: While complying with codes may impact insurance rates, this shouldn't be the primary motivation, as safety itself is paramount.
References:
Occupational Safety and Health (e.g., OSHA in the US): Websites of regulatory bodies outlining guidelines for safe equipment installation in various settings.
Electrical Codes (e.g., National Electrical Code): Standards that address safe practices to prevent fire and shock hazards.
NEW QUESTION # 31
Which wireless technology is MOST appropriate for low-power sensors that must operate for multiple years on a coin-cell battery?
- A. Wi-Fi 6
- B. LoRaWAN
- C. Zigbee
- D. Bluetooth Classic
Answer: B
Explanation:
LoRaWAN is optimized for extremely low power consumption and long-range communication, allowing sensors to operate for years on small batteries. Wi-Fi and Bluetooth Classic consume too much power, and Zigbee, although low-power, does not match LoRaWAN's battery longevity.
NEW QUESTION # 32
You are planning a wireless solution deployment. The organization has several wireless solutions in use. The new deployment must coexist with these other wireless solutions. What is the most important factor to consider when implementing the new wireless solution?
- A. Coordinating mounting locations with the other wireless solutions
- B. Coordinating frequency use with the other wireless solutions
- C. Implementing matching encryption keys synchronized with the other wireless solutions
- D. Implementing contrasting encryption keys countering the other wireless solutions
Answer: B
Explanation:
* Coexistence Priority: Frequency coordination is the most critical aspect in ensuring that multiple wireless solutions function without significant interference.
* Impact of Interference: Uncoordinated frequencies lead to:
* Signal degradation: Reduced network performance and reliability.
* Data errors and retransmissions: Inefficient operation and higher battery drain on devices.
NEW QUESTION # 33
What process, used for security in wireless solutions, is defined as the encoding of information to prevent readability by unauthorized users?
- A. Encryption
- B. Authorization
- C. Access Control
- D. Authentication
Answer: A
Explanation:
* Encryption vs. Other Options:
* Access Control: Limits who can access data, but doesn't make it unreadable.
* Authentication: Validates user/device identity, but not focused on data confidentiality.
* Authorization: Determines the actions a user is allowed, separate from securing the data itself.
* How encryption works: Encryption uses algorithms and keys to turn plaintext into unreadable ciphertext. Only those with the correct key can decrypt it.
* Data in motion vs. data at rest: Encryption protects sensitive information both when transmitted over the wireless network and when stored on devices.
References:
Encryption standards and protocols: Resources on common wireless encryption types (WPA2, WPA3, TLS) and their implementation.
NEW QUESTION # 34
You are planning to outsource the implementation of a new LoRaWAN w of the service provider performing the implementation in all cases?
- A. Effective documentation
- B. Ongoing free support
- C. Proof of concept
- D. Ongoing paid support
Answer: A
Explanation:
* Outsourcing Knowledge Transfer: When outsourcing implementation, the service provider has firsthand knowledge of system setup and configuration. Clear documentation ensures this knowledge remains accessible to you after the project is complete.
* Ongoing Support: While paid/free support options influence long-term maintenance, they won't substitute missing documentation about the specific setup.
* Reducing Future Vendor Reliance: Detailed documentation helps mitigate over-reliance on the service provider for minor changes and troubleshooting, giving you more long-term autonomy.
* Proof of Concept: A POC typically happens before outsourcing, and focuses on validating the solution's feasibility, not ensuring smooth knowledge transfer thereafter.
References:
Service Level Agreements (SLAs): Documentation related to outsourced work may be defined as a deliverable within an SLA.
Knowledge Management Best Practices:
NEW QUESTION # 35
What scripting language works natively inside of nearly all modern Web browsers and may also be used for automation within some wireless solutions, such as Node-RED?
- A. Python
- B. R
- C. PHP
- D. JavaScript
Answer: D
Explanation:
* Browser Ubiquity: JavaScript has a native runtime environment within almost every modern web browser, making it the 'built-in' scripting language for web-based interfaces.
* Node-RED: This IoT flow-based programming tool specifically uses JavaScript for its logic and automation functions.
* Other Languages:
* PHP: Primarily server-side for web applications
* Python: Versatile language, used in some back-end IoT functions but not natively in browsers
* R: Statistical and data analysis, not typically embedded in wireless solutions References:
JavaScript (Browser Compatibility): Documentation of its near-universal support Node-RED (Programming Model): Descriptions of how it uses JavaScript for node logic.
NEW QUESTION # 36
What is the role of the ITU in wireless communications?
- A. Coordinates the shared global use of the radio spectrum
- B. Oversees communications regulatory agencies in each country
- C. Defines international communications standards
- D. Establishes wireless radiation exposure limits
Answer: A
Explanation:
ITU's Mandate: The International Telecommunication Union (ITU) is a specialized agency of the United Nations focused on global information and communication technologies (ICTs).
Radio Spectrum Regulation: A core ITU function is allocating radio spectrum bands and satellite orbits to prevent harmful interference between different countries and technologies. This coordination is essential for the orderly use of wireless communications worldwide.
NEW QUESTION # 37
When deploying devices in an indoor manufacturing environment, which IP rating is more likely to be required?
- A. IP47
- B. IP38
- C. IP66
- D. IP46
Answer: C
Explanation:
IP Ratings & Manufacturing: IP66 provides:
Dust-tight: (First '6') Complete protection against dust ingress.
Powerful Water Jets: (Second '6') Protection against strong water jets from any direction.
Harsh Manufacturing Environments: IP66 is common due to dust, dirt, and potential exposure to liquids during cleaning or spills.
NEW QUESTION # 38
As an RF signal propagates it becomes weaker at any given measurement point as it gets farther away from the transmitter. What concept is described?
- A. Free Space Path Loss
- B. Diffraction
- C. RF latency
- D. Beamwidth
Answer: A
Explanation:
Free Space Path Loss (FSPL): Describes how a radio signal weakens as it travels through open space, even without obstacles. It's caused by the signal spreading out, resulting in decreased power density at the receiver.
Calculation: FSPL depends on distance and frequency.
NEW QUESTION # 39
What metric is used to express a relative increase or decrease in signal strength?
- A. W
- B. dB
- C. dBm
- D. mW
Answer: B
Explanation:
Decibel (dB): A logarithmic unit expressing ratios of power or signal strength. It's used in RF contexts due to the wide range of signal levels encountered.
Examples:
dBm: Decibels relative to one milliwatt (power measurement).
dBi: Decibels relative to an isotropic antenna (antenna gain).
NEW QUESTION # 40
How is ASK modulation different from FSK modulation?
- A. FSK is more sensitive to noise than ASK
- B. ASK can carry more data than FSK
- C. ASK varies the amplitude of the signal while FSK shifts its frequency
- D. ASK does not work at high frequencies
Answer: C
Explanation:
* Key Modulation Differences:
* ASK (Amplitude Shift Keying): Digital data is represented by changes in the amplitude (strength) of a carrier wave.
* FSK (Frequency Shift Keying): Digital data is represented by changes in the frequency of a carrier wave.
References
* ASK: https://en.wikipedia.org/wiki/Amplitude-shift_keying
* FSK: https://en.wikipedia.org/wiki/Frequency-shift_keying
NEW QUESTION # 41
What is the most important consideration when deciding whether to implement a wired or wireless solution?
- A. The availability of PoE
- B. Business and system requirements
- C. The applications being used
- D. The distance between nodes
Answer: B
Explanation:
* Requirements Drive Decisions: The decision between wired or wireless must align with the solution's overall purpose, performance targets, and operational constraints.
* Key Considerations:
* Reliability: Does the application require guaranteed connectivity? (Wired may be favored).
* Installation Cost: Can extensive cabling be done, or is it prohibitively expensive? (Wireless may be favored).
* Flexibility and Scalability: Is node placement likely to change in the future? (Wireless may be favored).
* Other Factors are Important, But Secondary: Distance, PoE availability, specific applications all matter, but they are assessed within the context of the overarching business needs.
References:
Wireless vs. Wired Network Design: Comparisons of pros and cons, highlighting how use cases guide the choice.
IoT Solution Planning: Materials on defining requirements before selecting technology.
NEW QUESTION # 42
You are troubleshooting a problem with a wireless solution that uses MQTT where the IoT end devices are not reporting to the MQTT server/broker. At what Layer of the OSI Model should troubleshooting begin when using a bottom-up method?
- A. Layer 1
- B. Layer 6
- C. Layer 4
- D. Layer 5
Answer: A
Explanation:
* Bottom-Up Troubleshooting: The OSI model provides a structured diagnostic approach. Starting at Layer 1 ensures basic physical connectivity issues are ruled out first.
* MQTT Relies on IP: MQTT operates at a higher layer of the OSI model, relying on TCP/IP (Layers 4 and 3) for communication. Problems at the physical layer will disrupt everything built upon it.
* Checking the Fundamentals: Before investigating complex application issues (MQTT), verify cables, link lights, Wi-Fi signal strength, etc.
References:
OSI Model: Descriptions of the seven layers, emphasizing the foundation provided by Layer 1 (Physical).
Network Troubleshooting Guides: Resources that outline common Layer 1 problems and their symptoms.
NEW QUESTION # 43
You must ensure proper security controls are in place for a wireless solution. The solution allows for the use of groups to grant access to resources and capabilities. What is the term used to describe a situation where an individual is granted more access than required because of inclusion in a group?
- A. Improper grouping
- B. Privilege creep
- C. Privilege escalation
- D. Improper delegation
Answer: B
Explanation:
* Privilege Creep Defined: Gradual accumulation of excessive permissions over time, often due to users changing roles or access needs not being adjusted accordingly.
* Other Terms:
* Privilege Escalation: A malicious act of obtaining higher-than-authorized access.
* Improper Delegation/Grouping: Faulty permission assignment, but not the gradual accretion aspect.
References:
Principle of Least Privilege: Security best practice emphasizing the need to minimize access to only what's necessary.
Access Control Models: Discussions of how privilege creep can violate security principles.
NEW QUESTION # 44
A Wi-Fi enabled weight scale is an example of what kind of health IoT device?
- A. wearable
- B. injectable
- C. non-wearable
- D. implantable
Answer: C
Explanation:
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).
Implantable: Surgically inserted devices (pacemakers, glucose monitors).
NEW QUESTION # 45
Which of the following is a characteristic of 802.15.4 networks such as Zigbee?
- A. Operation only on 5 GHz
- B. Very high throughput (hundreds of Mbps)
- C. Extremely long range (tens of kilometers)
- D. Mesh networking support
Answer: D
Explanation:
Zigbee supports mesh networking for extended coverage and reliability. It offers low throughput, typically operates at 2.4 GHz, and is not long-range.
NEW QUESTION # 46
What best describes the area covered or connected by a WWAN?
- A. Region
- B. City
- C. Campus
- D. In-building
Answer: A
Explanation:
* WWAN (Wide-Area Wireless Network): WWANs provide connectivity over extensive geographic areas, typically covering regions or even entire countries.
* Cellular Technology: WWANs often rely on cellular networks (3G, 4G, 5G) offered by mobile carriers.
References
* WWAN: https://en.wikipedia.org/wiki/Wireless_wide_area_network
NEW QUESTION # 47
You are considering the implementation of a lab for testing wireless equipment. What is the primary benefit of such a lab? (Choose the single best answer.)
- A. Provides a failover environment for your production systems
- B. Provides a way to repurpose old hardware that is not ready for final removal
- C. Provides a safe environment in which to develop practical skills and knowledge of a technology and to test the technology
- D. Provides for testing to determine how much RF exposure you can tolerate
Answer: C
Explanation:
Lab Purpose: Wireless testing labs offer controlled settings to:
Skill Development: Hone practical understanding of wireless technologies without impacting production environments.
Experimentation: Safely test different configurations, compatibility, and potential issues.
Troubleshooting: Isolate problems, test solutions, and understand how equipment behaves in various scenarios.
NEW QUESTION # 48
You have implemented a wireless mesh network. All mesh nodes are properly configured for participation in the same mesh network. Several of the mesh nodes are unable to connect to other mesh nodes. What action may provide a solution to this problem?
- A. Move the faulty mesh nodes to provide for better signal strength
- B. Place the faulty mesh nodes in their own mesh network
- C. Change the security settings on the faulty mesh nodes
- D. Change the output power settings only on the faulty mesh nodes
Answer: A
Explanation:
* Mesh Connectivity Depends on Signal: Mesh nodes relay data for each other. Weak signal strength between nodes can disrupt connectivity throughout the network.
* Troubleshooting Signal Issues: Physically relocating affected nodes can improve their ability to form stable connections with other nodes in the mesh.
* Why Other Options May Not Help:
* Separate Mesh: Splits the network, not solving the root connectivity issue
* Output Power: May help marginally, but significant improvement is typically achieved through repositioning.
* Security Settings: Unlikely to cause connectivity issues between properly configured nodes in the same mesh.
References:
Wireless Mesh Network Troubleshooting: Guides addressing signal strength and coverage concerns.
RF Site Survey Tools: Resources on software that can help visualize signal strength and aid in node placement.
NEW QUESTION # 49
You are troubleshooting a problem with a wireless solution that uses MQTT where the IoT end devices are not reporting to the MQTT server/broker. At what Layer of the OSI Model should troubleshooting begin when using a bottom-up method?
- A. Layer 1
- B. Layer 6
- C. Layer 4
- D. Layer 5
Answer: A
Explanation:
Bottom-Up Troubleshooting: The OSI model provides a structured diagnostic approach. Starting at Layer 1 ensures basic physical connectivity issues are ruled out first.
MQTT Relies on IP: MQTT operates at a higher layer of the OSI model, relying on TCP/IP (Layers 4 and 3) for communication. Problems at the physical layer will disrupt everything built upon it. Checking the Fundamentals: Before investigating complex application issues (MQTT), verify cables, link lights, Wi-Fi signal strength, etc.
NEW QUESTION # 50
What is the primary difference between LoRa and LoRaWAN
- A. LoRa is the modulation method (using CSS modulation at the Physical Layer) and LoRaWAN is the MAC sub-layer of the Data Link layer
- B. LoRa uses RF and LoRaWAN uses light-based communications
- C. LoRa is used for communicating across the Internet and LoRaWAN is used only on the local link
- D. LoRa is the Physical Layer and LoRaWAN is the Transport Layer
Answer: A
Explanation:
* LoRa: This refers to the underlying radio modulation technique using Chirp Spread Spectrum (CSS). It defines how data is physically encoded onto the wireless signal.
* LoRaWAN: This is the network protocol built on top of LoRa. It manages device communication, network topology, and aspects like security. It operates at the MAC sublayer of the Data Link layer (Layer 2) of the OSI model
* LoRa vs. LoRaWAN: Key takeaway is that LoRa is the physical layer technology, while LoRaWAN adds the networking layer for management.
References:
LoRa Modulation: Technical explanations of Chirp Spread Spectrum (CSS).
LoRaWAN Specification: Official documentation detailing the network architecture and MAC layer functions.
OSI Model: Descriptions of the Data Link layer and its role in networking.
NEW QUESTION # 51
As an RF signal propagates it becomes weaker at any given measurement point as it gets farther away from the transmitter. What concept is described?
- A. Free Space Path Loss
- B. Diffraction
- C. RF latency
- D. Beamwidth
Answer: A
Explanation:
* Free Space Path Loss (FSPL): Describes how a radio signal weakens as it travels through open space, even without obstacles. It's caused by the signal spreading out, resulting in decreased power density at the receiver.
* Calculation: FSPL depends on distance and frequency.
References
* Free Space Path Loss: https://en.wikipedia.org/wiki/Free-space_path_loss
NEW QUESTION # 52
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