Prepare CWISA-103 Question Answers - CWISA-103 Exam Dumps [Q40-Q64]

Prepare CWISA-103 Question Answers - CWISA-103 Exam Dumps

Real CWNP CWISA-103 Exam Questions [Updated 2025]

NEW QUESTION # 40
You are performing an implementation for a cloud-based wireless solution. How is connectivity to the cloud established? (Choose the single best answer.)

• A. Through the use of IPX/SPX routers
• B. Through cellular Internet connections only
• C. Through BLE Layer 2 connections that do not use IP
• D. Through any Layer 3 network connected to the Internet

Answer: D

Explanation:
* Cloud Connectivity Relies on IP: Most cloud-based services operate via the internet, which utilizes Internet Protocol (IP) at Layer 3 of the network model.
* Flexibility: Various Layer 2 technologies (Ethernet, Wi-Fi) can connect to a Layer 3 network that ultimately provides Internet access
* BLE Exception: Bluetooth Low Energy can have cloud connectivity, but often through gateways and not as a direct Layer 2 connection.
* Eliminating Incorrect Options: IPX/SPX is an outdated protocol, and cellular is only one possible way to achieve Internet access.
References:
OSI Model: Descriptions of Network Layers, especially Layer 2 (Data Link) and Layer 3 (Network).
Cloud Architecture: Diagrams showing how devices commonly access cloud resources through internet- based infrastructures.

NEW QUESTION # 41
What process, used for security in wireless solutions, is defined as the encoding of information to prevent readability by unauthorized users?

• A. Encryption
• B. Authentication
• C. Access Control
• D. Authorization

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 # 42
What provides the security (encryption) in an HTTPS connection?

• A. SSL/TLS
• B. IPSec
• C. SSH
• D. SNMPv3

Answer: A

Explanation:
* SSL/TLS Secures Web Traffic: HTTPS builds upon HTTP, adding the encryption provided by Secure Sockets Layer (SSL) or its successor, Transport Layer Security (TLS).
* Other Protocols Have Different Purposes:
* IPSec: Secures IP traffic at a network level, can be used alongside TLS.
* SNMPv3: Management protocol, offers security features, but not the primary mechanism in HTTPS.
* SSH: Secure remote shell, unrelated to web data encryption.
References:
TLS (and SSL): Explanations of their role in HTTPS and how they provide encryption for web communication.
HTTPS Overview: Materials showing how TLS fits into the overall HTTPS architecture.

NEW QUESTION # 43
What is defined as the weakening of signal amplitude as the signal passes through a medium?

• A. Scattering
• B. Reflection
• C. Diffraction
• D. Attenuation

Answer: D

Explanation:
* Attenuation: Describes the progressive loss of signal strength as it travels through a medium (like air, cables, walls). It's caused by factors like absorption, distance, and obstacles.
* Other Phenomena:
* Diffraction: Bending of waves around obstacles.
* Reflection: Waves bouncing off surfaces.
* **Scattering: ** Waves dispersing in multiple directions.
References
* Attenuation: https://en.wikipedia.org/wiki/Attenuation

NEW QUESTION # 44
You are planning a wireless solution. Why should you consider an ongoing monitoring system for use after the solution is deployed?

• A. To ensure that the system continues to meet the original requirements, even if users later indicate poor performance
• B. The number of users and the use of the solution will change over time and monitoring allows for detection of these changes
• C. Implementation validation is never completed, it continues throughout the life of the system
• D. Monitoring the solution provides additional billable hours

Answer: B

Explanation:
* Ongoing Monitoring for Adaptability: Wireless networks are dynamic environments. Ongoing monitoring is essential because:
* Changing Usage Patterns: User numbers and how they utilize the network evolve over time.
* Capacity Adjustments: Monitoring reveals if the network needs scaling for more devices or changing use cases.
* Security: Helps detect unauthorized access or anomalies.
References
* Importance of Wireless Network Monitoring: Resources will detail its role in proactive management

NEW QUESTION # 45
You are planning a wireless implementation. At what point should you begin to consider security requirements for the implementation?

• A. In the implementation phase
• B. In the acceptance testing phase
• C. In the planning phase
• D. During hand-off to support

Answer: C

Explanation:
* Security by Design: Security should be a fundamental consideration from the initial planning stages of any wireless implementation. This ensures:
* Risk Assessment: Identifying potential vulnerabilities early on.
* Security Controls: Choosing appropriate encryption, authentication, and access control mechanisms.
* Integration: Security measures are seamlessly woven into the system's architecture, not retrofitted later, which can be less effective.

NEW QUESTION # 46
What advantage is provided by using an NTP server within a wireless solution architecture?

• A. It provides for semi-automatic IP addressing in wireless sensor networks
• B. It ensures uniform, synchronized time among devices
• C. It ensures security through AES encryption
• D. It provides for name resolution for older network devices

Answer: B

Explanation:
* Importance of Time Sync in IoT: Coordinated actions, accurate data analysis, and event logging in wireless IoT solutions often rely on devices having a shared time reference.
* NTP's Role: Network Time Protocol (NTP) enables devices to synchronize their clocks against a reliable time source (NTP server), ensuring consistency across the network.
* Why Other Options Don't Fit:
* IP Addressing: Usually handled by DHCP, not NTP.
* Encryption: SSL/TLS secure data in transit, not related to timekeeping.
* Name Resolution: Purpose of DNS, not NTP.
References:
Network Time Protocol (NTP): How it works and its importance in distributed systems.
IoT Time Synchronization Challenges: Articles highlighting the need for accuracy in sensor networks and similar use cases.

NEW QUESTION # 47
What best describes the area covered or connected by a WWAN?

• A. Campus
• B. Region
• C. City
• D. In-building

Answer: B

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 # 48
A Wi-Fi enabled weight scale is an example of what kind of health IoT device?

• A. wearable
• B. injectable
• C. implantable
• D. non-wearable

Answer: D

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).
References
* Health IoT: Resources on healthcare + IoT will illustrate device types.

NEW QUESTION # 49
What kind of PoE device can be used to power a non-PoE connected object assuming PoE power is provided on the Ethernet cable?

• A. PoE midspan injector
• B. PoE coupler
• C. PoE endspan switch
• D. PoE splitter

Answer: D

Explanation:
* PoE Splitter: A PoE splitter separates power and data from a PoE-enabled Ethernet cable, allowing the powering of non-PoE devices.
* Other PoE Devices:
* PoE Injector: Adds power to non-PoE Ethernet cable.
* PoE Switch: Provides power directly through its ports.

NEW QUESTION # 50
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. RF latency
• B. Beamwidth
• C. Diffraction
• D. Free Space Path Loss

Answer: D

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 # 51
What is an advantage of using HTTP-based processing?

• A. It is faster than any other APIs
• B. It is simple and commonly understood in the developer community
• C. It Is more secure than any other APIs
• D. It is more secure than other transports, when using SSH

Answer: B

Explanation:
* HTTP's Popularity: HTTP is the foundation of the web, making it widely known and supported.
Developers have extensive familiarity with its concepts (methods, headers, status codes, etc.).
* REST APIs and Webhooks: These often leverage HTTP for communication, building upon existing knowledge and tools.
* Tradeoffs:
* Security: HTTP itself is not inherently secure; HTTPS or additional layers address this.
* Speed: Protocols optimized for IoT may have lower overhead, but HTTP's simplicity often outweighs minor performance differences.
References:
REST APIs: Overviews of their use of HTTP, demonstrating its prevalence in API development.
Developer Experience with HTTP: Discussions on the familiarity with and availability of HTTP libraries in various programming languages

NEW QUESTION # 52
Among these choices, what is the most common reason administrators use scripting during the deployment of a wireless solution?

• A. To reduce configuration errors
• B. To increase the signal strength of the resulting wireless links
• C. To provide time for playing solitaire
• D. To enhance the capabilities of the resulting solution

Answer: A

Explanation:
* Automation for Consistency: Scripts eliminate the potential for human error during repetitive configuration tasks on multiple devices. This ensures uniformity across the wireless solution.
* Speed and Efficiency: Scripts can be much faster than manual configuration, particularly in large deployments.
* Other Benefits: While scripts might aid signal strength (e.g., optimizing settings) or enhance solution capabilities, their core value in configuration is reducing errors.
References:
Network Automation: Benefits of using scripts for configuration management.
Configuration Management Best Practices: Emphasize the importance of consistency and repeatability.

NEW QUESTION # 53
What is most often used to track livestock on large farms and identify each animal Individually?

• A. Thermistor sensors
• B. 802.11 wireless radios
• C. RFID tags
• D. Photodiode sensors

Answer: C

Explanation:
* RFID for Livestock: Radio Frequency Identification (RFID) tags are the most widely used technology for livestock tracking and individual identification on large farms.
* Benefits:
* Unique ID: Each RFID tag has a unique code.
* Data Storage: Some tags store information about the animal.
* Durability: Tags withstand outdoor conditions.
* Automated Reading: Tags can be scanned quickly.
References
* RFID (General): https://en.wikipedia.org/wiki/Radio-frequency_identification

NEW QUESTION # 54
What modulation is used by LoRa?

• A. OFDM
• B. ASK
• C. CSS
• D. OFDMA

Answer: C

Explanation:
* LoRa Modulation: LoRa (Long Range) is a proprietary wireless technology that utilizes Chirp Spread Spectrum (CSS) modulation.
* CSS Characteristics:
* Spread spectrum technique for resilience against interference.
* Chirps (frequency sweeps) enable operation below the noise floor for long range.
References
* LoRa: https://en.wikipedia.org/wiki/LoRa
* Chirp Spread Spectrum (CSS): https://en.wikipedia.org/wiki/Chirp_spread_spectrum

NEW QUESTION # 55
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 4
• C. Layer 6
• 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 # 56
What is the spacing between ZigBee channels when operating in the 2.4 GHz frequency band?

• A. 5 MHz
• B. 25 MHz
• C. 2 MHz
• D. 1 MHz

Answer: A

Explanation:
* ZigBee Channel Spacing: ZigBee channels in the 2.4 GHz band are spaced 5 MHz apart. This helps manage interference in the crowded 2.4 GHz spectrum.

NEW QUESTION # 57
What is the role of the ITU in wireless communications?

• A. Establishes wireless radiation exposure limits
• B. Oversees communications regulatory agencies in each country
• C. Defines international communications standards
• D. Coordinates the shared global use of the radio spectrum

Answer: D

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.
* Other ITU Roles: While involved in standard-setting and establishing best practices, options A and D are less precise than the ITU's spectrum coordination focus.
References:
ITU Website: (https://www.itu.int/en/) Outlines its activities and governance of radio spectrum.
ITU Radio Regulations: The international treaty governing the use of the radio-frequency spectrum.

NEW QUESTION # 58
You are defining capacity for a wireless solution. What is the most important factor related to each use case defined in relation to capacity?

• A. Protocols used on each device
• B. Total airtime utilization
• C. Number of devices
• D. Support for mobility

Answer: C

Explanation:
* Capacity Planning: The number of devices a wireless network can support is the primary determinant of its required capacity. This is because:
* Traffic Load: Each device generates network traffic that contributes to the overall load.
* Resource Sharing: Devices compete for airtime and bandwidth resources.
* Device Type: Requirements vary; a simple sensor has different needs than a video camera.

NEW QUESTION # 59
What is the benefit of using SINR as opposed to SNR to reference signal quality at a receiver?

• A. SINR includes interference as well as the noise floor
• B. SNR includes interference measurements that skew the results
• C. SNR excludes the noise floor, which skews the results
• D. SINR excludes interference and only measures the noise floor

Answer: A

Explanation:
* SINR vs. SNR:
* SNR (Signal-to-Noise Ratio): Measures the power of the desired signal relative to background noise.
* SINR (Signal-to-Interference-plus-Noise Ratio): Considers both background noise and interference from other signals operating on the same frequency.
* Practical Importance: SINR is a more realistic indicator of real-world signal quality in wireless environments where interference is a significant factor.
References
* SINR: https://en.wikipedia.org/wiki/Signal-to-interference-plus-noise_ratio
* SNR: https://en.wikipedia.org/wiki/Signal-to-noise_ratio

NEW QUESTION # 60
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. Change the security settings on the faulty mesh nodes
• B. Place the faulty mesh nodes in their own mesh network
• C. Change the output power settings only on the faulty mesh nodes
• D. Move the faulty mesh nodes to provide for better signal strength

Answer: D

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 # 61
What primary component is required to implement a wireless transceiver in a device?

• A. Radio
• B. Flash memory
• C. SRAM
• D. GPIO pins

Answer: A

Explanation:
* Wireless Transceiver: A transceiver is a combination of a transmitter and receiver used for wireless communication.
* Radio: The radio is the primary component responsible for:
* Modulation: Encoding data onto a carrier wave.
* Demodulation: Extracting data from a received signal.
* Transmission/Reception: Handling the actual sending and receiving of modulated signals over the air.
References
* Transceiver: https://en.wikipedia.org/wiki/Transceiver

NEW QUESTION # 62
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 frequency use with the other wireless solutions
• B. Implementing contrasting encryption keys countering the other wireless solutions
• C. Coordinating mounting locations with the other wireless solutions
• D. Implementing matching encryption keys synchronized with the other wireless solutions

Answer: A

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 # 63
What organization maintains and publishes the 802.15.4 Standard?

• A. IETF
• B. Bluetooth SIG
• C. Zigbee Alliance
• D. IEEE

Answer: D

Explanation:
* IEEE 802.15.4: The IEEE 802.15.4 standard is a fundamental specification for low-rate wireless personal area networks (LR-WPANs). It serves as the basis for many wireless IoT protocols.
* IEEE's Role: The Institute of Electrical and Electronics Engineers (IEEE) is the organization responsible for creating, maintaining, and publishing the 802.15.4 standard.
References
* IEEE 802.15.4 Standard: https://standards.ieee.org/standard/802_15_4-2020.html
* IEEE Website: https://www.ieee.org/

NEW QUESTION # 64
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