Most Recent CWNP CWISA-102 Exam Dumps

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.

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):References 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.

Customization and Integrations:The presence of APIs often suggests a system is integrated with other platforms or has custom-built elements.

Understanding Dependencies:Documenting used APIs helps clarify how different parts of the system interact and where potential issues might arise.

Troubleshooting Efficiency:Detailed API documentation aids in resolving problems, allowing staff to assess interconnected systems effectively.

Knowledge transfer:Future support teams won't have to reverse-engineer the system; documentation ensures smooth handover and understanding.

References:

Best practices API documentation:Guides on API documentation formats and the level of detail needed for maintenance. [Example: Swagger, OpenAPI Specification] (https://swagger.io/)

Software Development Life Cycle (SDLC):Materials emphasizing the importance of documentation during development and support phases.

IETF's Focus:The Internet Engineering Task Force (IETF) primarily develops and standardizes internet protocols operating at the Network Layer (Layer 3) and above in the OSI model.

Key Protocols:Some prominent IETF-developed protocols include:

IP (Internet Protocol):Foundation of internet addressing and routing.

TCP (Transmission Control Protocol):Reliable, connection-oriented data transport.

UDP (User Datagram Protocol):Connectionless, best-effort data transport.

DNS (Domain Name System):Translates domain names into IP addresses.

HTTP (Hypertext Transfer Protocol):Web communication.

References

IETF Website:https://www.ietf.org/

OSI Model:https://en.wikipedia.org/wiki/OSI_model

Legacy Support:The primary reason to continue using older wireless technologies is the need to connect with devices that don't support newer standards (e.g., old sensors or equipment).

Other Reasons (Not as Strong):

Cost:Replacing legacy devices can be expensive.

Reliability:Some legacy technologies might be well-proven in specific settings.