Reliability Flashcards
(10 cards)
What does reliability mean in networking?
Reliability refers to the ability of a network to consistently perform its required functions, deliver data accurately and on time, and remain operational over time.
Why is reliability important in networking?
It ensures that users can depend on the network for continuous, error-free communication, which is critical for business operations, online services, and real-time applications.
What are the key factors that affect network reliability?
Factors include hardware quality, network design, redundancy, error detection and correction methods, and environmental conditions.
What is redundancy and how does it improve reliability?
Redundancy involves having backup links or components so that if one fails, the network can continue to operate using the alternative, minimizing downtime.
How does error control improve reliability?
Error control techniques like ARQ and FEC detect and correct data transmission errors, ensuring that the data received is accurate and complete.
What is failover in the context of reliability?
Failover is the process of switching to a backup system or connection automatically when the primary one fails, to maintain continuous service.
How does network monitoring contribute to reliability?
Network monitoring tools detect problems early, track performance, and provide alerts, allowing administrators to fix issues before they affect users.
What is a Service Level Agreement (SLA) in terms of network reliability?
An SLA is a formal agreement between a service provider and a user that defines the expected reliability, uptime, and response time for network services.
How can load balancing improve network reliability?
Load balancing distributes traffic across multiple servers or paths, preventing overload on any single component and improving network responsiveness and uptime.
What is the role of backup power supplies in ensuring network reliability?
Backup power supplies like UPS (Uninterruptible Power Supply) keep network devices running during power outages, preventing service interruption.
