Sophie, an IT consultant, is assessing a financial institution's network. Which network topology is she likely to find, given their need for security and centralized control?

Question

BlackTom AI · Accepted Answer

Star topology uses a single central hub, switch, or router through which all nodes communicate, making it the best fit when centralized control and security are priorities.

1. Relevant knowledge points and concepts
- Star topology: every device connects to a central device that forwards traffic; central point enables centralized management, monitoring, and application of security controls (ACLs, firewalls, VLANs).
- Tree topology: hierarchical extension of star, with multiple levels; can be centralized at higher levels but is more distributed across branches.
- Mesh topology: many interconnections for redundancy and availability; control is distributed and complex.
- Ring topology: devices connected in a closed loop; traffic passes sequentially and control/security are less centralized.

2. Step-by-step reasoning
- Requirement: financial institutions need strict security, centralized policy enforcement, and easy monitoring/segmentation.
- Determine topology property needed: a clear single point where traffic can be inspected and policies enforced (centralized control).
- Match properties to options: star topology provides that central point (hub/switch/router) which can host firewalls, intrusion detection, VLAN separation, and logging. Therefore it best satisfies the stated needs.

3. Calculations
- No numerical calculations are required for this conceptual network design question.

4. Why the correct answer is correct
- In a star, the central device is a natural choke/management point for access control, network segmentation, and monitoring—features essential to a financial institution’s security posture. Failure isolation is easier (a single endpoint failure doesn’t bring down the whole network), and administrators can centrally manage policies.

5. Why other options are incorrect
- Tree topology: more hierarchical and spread across branches; less straightforward for a single centralized control point at the edge.
- Mesh topology: emphasizes redundancy and availability with many interconnections, but control is distributed and management/monitoring are more complex and expensive.
- Ring topology: sequential paths limit centralized inspection; a break can disrupt communication unless specialized protocols are used.

6. Conclusion
Given the need for security and centralized control, the correct answer is star topology, which matches the provided answer.

Sophie, an IT consultant, is assessing a financial institution's network. Which network topology is she likely to find, given their need for security and centralized control?单项选择题

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