Server Response and Emergency Phone Lookup System

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What is the purpose of having two failure domains in a system?

To limit the blast radius of system changes (correct)

To enhance incident response mechanisms

To provide A/B regression capabilities

To back up data in case of failure

How can geographically separated failure domains benefit a system?

They enhance emergency phone number lookup

They provide isolation for natural disasters (correct)

They reduce data corruption risks

They allow for testing different software versions

What is the purpose of a breakglass mechanism in system operations?

To limit the number of ACL entries

To increase the blast radius of system changes

To enhance global network failure management

To bypass policies during outages for quick resolution (correct)

Why should systems using ACLs fail closed?

To provide secure access with explicit permissions Signup and view all the answers

How does combining data and functional isolation enhance system resilience?

By delaying incident propagation to functional units Signup and view all the answers

What can lead to system overload according to the text?

A sudden spike in incoming requests Signup and view all the answers

How can a storage shortage potentially lead to system failure?

By increasing software failures Signup and view all the answers

What does the text suggest should be planned in advance to prevent system breakdown?

Weaknesses in the system Signup and view all the answers

How can a system protect itself from collapsing chaotically during dire circumstances?

Selecting which properties to disable or adjust Signup and view all the answers

What is the benefit of deliberately designing multiple response options for system failures?

Utilizing controlled breakpoints instead of chaotic collapse Signup and view all the answers

What is the main purpose of creating failure domains in a system?

To achieve functional isolation Signup and view all the answers

How do failure domains differ from managing role, location, and time separations?

Failure domains involve partitioning the system into completely independent copies Signup and view all the answers

What is the effect of failure domains on system resilience?

They increase system resilience Signup and view all the answers

Why is it important to mitigate failures of critical components in a system?

To prevent complete system failure Signup and view all the answers

Which approach is recommended to reduce the probability of a single root cause affecting elements in multiple failure domains?

Breaking up systems into independent failure domains Signup and view all the answers

What is the purpose of periodically refreshing the phone number list from the remote service?

To ensure the emergency phone numbers are up to date and accurate Signup and view all the answers

Why might a hidden landline with dialing capabilities be utilized as a backup to a disabled wireless connection?

To provide an alternative communication method in case of a wireless failure Signup and view all the answers

Why is building an alternative network that avoids reusing components from the main network considered essential?

To ensure simplicity and understandability in network design Signup and view all the answers

What is the primary goal behind limiting available features and bandwidth in the alternative network mentioned?

Support only critical features during a network outage Signup and view all the answers

Why are large networks more susceptible to global outages compared to smaller networks?

Due to the dynamic management and complexity involved Signup and view all the answers