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?
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.
What modulation is used by LoRa?
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
What consideration is found in PtMP systems that is not found in PtP systems?
PtMP (Point-to-Multipoint):A single access point (AP) communicates with multiple client devices. This means the AP needs to manage how the available airtime is shared among those clients.
Airtime Fairness:Mechanisms are needed to ensure that:
Each client gets a fair chance to communicate
High-priority traffic isn't starved by low-priority traffic
PtP (Point-to-Point):A dedicated link only has two devices, eliminating the need for complex airtime management.
Considerations in Both:While interference, SINR, and frequency selection are important in both PtMP and PtP systems, the need for airtime management is unique to the multipoint scenario.
References:
Wireless Network Topologies (PtP vs. PtMP):References of the differences in how communication is managed in each scenario.
TDMA (Time Division Multiple Access):A common airtime sharing method used in PtMP systems.
What is an important acceptance agreement to achieve in the final customer meeting for a wireless IoT deployment?
Successful Deployment Depends on Buy-In:A final customer meeting signifies the handover phase. Achieving stakeholder agreement ensures everyone impacted by the solution has a voice and feels their concerns are addressed.
Sign-Off and Formal Acceptance:Stakeholders often need to formally 'sign-off' on a project's completion, indicating satisfaction and readiness for operational use.
Other Options: While Important, Not the Primary Goal:
Scope definition typically happens much earlier
Solutions may or may not include wearables
Power supply should already be planned
References:
Project Management Methodologies:Emphasis on stakeholder involvement & acceptance criteria.
ITIL (Change Management):Materials on getting approval before a system goes live.
What is an important feature of the PHP scripting language?
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.
