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:
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): Explanations 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.
Question 2
What statement best describes the difference between authentication and authorization?
Options:
A.
Authentication ensures privacy and authorization ensures availability
B.
Authentication is not used in wireless solutions and authorization is used in wireless solutions
C.
Authentication proves identity and authorization determines access to specific resources
D.
Authentication is used in wireless solutions and authorization is not
Answer:
C
Explanation:
Explanation:
Authentication: Verifying "who" the user or device is (e.g., via passwords, certificates).
Authorization: Controlling "what" a user or device can do once authenticated (e.g., read-only vs. read/write permissions).
Combined for Security: Both are essential. Authentication alone doesn't control access levels, and authorization without verification is meaningless.
References:
Identity and Access Management (IAM): Articles and resources outlining the core principles of authentication and authorization.
Cybersecurity Best Practices: Guides on securing systems will often emphasize the need for both authentication and authorization controls.
Question 3
What is the most important consideration when deciding whether to implement a wired or wireless solution?
Options:
A.
The distance between nodes
B.
The availability of PoE
C.
The applications being used
D.
Business and system requirements
Answer:
D
Explanation:
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:
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.