Fault Tolerance and Redundancy Questions

Your company has a critical web server with a single hard drive. Recently, the hard drive failed, causing hours of downtime. Management wants to avoid such situations in the future. Which of the following would BEST provide fault tolerance for this scenario?

• Install a RAID array with redundancy.

• Upgrade the hard drive to SSD for faster performance.

• Add an extra power supply to the web server.

• Use a single high-capacity hard drive.

A company uses a load balancer to manage traffic between four web servers. Suddenly, one server stops responding. How will the load balancer MOST LIKELY respond to maintain availability?

• It will shut down all servers until the faulty one is replaced.

• It will redirect incoming traffic to the remaining operational servers.

• It will notify the administrator and stop all network services.

• It will automatically reboot the faulty server to restore service.

An organization wants its firewall system to switch automatically to a backup firewall if the primary firewall fails, without user disruption. Which configuration would BEST meet this requirement?

• Manual failover firewall configuration.

• Two firewalls with automatic high-availability configuration.

• A single high-capacity firewall with extra memory.

• Scheduled firewall maintenance during off-hours.

A company has two routers connected in a network to ensure continuous internet connectivity. What kind of redundancy is this an example of?

• Multipathing.

• Port Aggregation.

Your data center experiences frequent power fluctuations. To provide fault tolerance for critical servers, what would be the BEST solution?

• Install an Uninterruptible Power Supply (UPS) and redundant power supplies.

• Upgrade server CPUs for faster processing.

• Use a high-capacity single power supply.

• Schedule power maintenance during weekends.

A server uses two NICs connected to two different switches. If one switch fails, the server remains accessible. What is this design called?

• Port Aggregation.

• Multipathing.

• Load Balancing.

• Single Point Redundancy.

A company uses a load balancer with a Virtual IP (VIP) to distribute traffic among multiple web servers. Which statement BEST describes the function of the VIP?

• It provides a unique IP address to each server behind the load balancer.

• It allows users to connect through a single IP, hiding individual server IPs.

• It assigns a static IP address for each active web server.

• It balances server loads by changing IP addresses dynamically.

An enterprise wants to ensure internet availability even if its primary ISP fails. What should they implement?

• A) A backup firewall with load balancing.

• B) Multipathing between multiple routers.

• C) Multiple ISP links with automatic failover.

• D) A single high-speed connection with a static IP.

An organization clusters multiple servers so that if one server fails, the others can continue to provide services. What is the PRIMARY benefit of clustering in this scenario?

• Cost reduction.

• Performance optimization.

• High availability and fault tolerance.

• Simplified network configuration.

A company connects two network cables from a single server to a single switch to increase bandwidth and ensure continuous connectivity. What is this configuration called?

• Port Aggregation.

• Multipathing.

• Load Balancing.

• Single-Link Redundancy.