Question 1

____ is when one node in a failover cluster fails, another instance will take over for the failed node.

Accepted Answer

Failover is the process of automatically switching to a redundant, standby server or system upon the failure of an active or production server. It ensures high availability and prevents system downtime.

Question 2

In an NLB Cluster, ____ is the most common mode used, and is recommended in Microsoft documentation.

Accepted Answer

Unicast is the most common mode used in an NLB (Network Load Balancing) cluster, and it is also recommended in Microsoft documentation. Unicast mode is simple to implement and provides a high level of scalability and performance. In unicast mode, each node in the cluster has its own unique MAC address, which enables it to communicate directly with other nodes, eliminating the need for broadcast or multicast traffic. This mode is ideal for small and medium-sized networks, as it provides a high level of reliability and redundancy.

Question 3

Servers within a failover cluster are referred to as ____.

Accepted Answer

Servers within a failover cluster are referred to as nodes.

Question 4

The choice of quorum model largely depends on ____.

Accepted Answer

The answer of The choice of quorum model largely depends...

Question 5

If the user account is located in an OU, the OU is not included in the DN.

Accepted Answer

This statement is incorrect. The DN (Distinguished Name) of a user account includes the full hierarchy of the user's location in the Active Directory structure, including the OU (Organizational Unit) where the user account is located.

Question 6

With ____, server load is balanced across each of the servers and progressively more clients can be added without degrading the service.

Accepted Answer

Scale out, also known as horizontal scaling, involves adding more servers to the system to distribute the workload across them, which allows for more clients to be added without sacrificing the quality of the service. Scaling up, or vertical scaling, involves increasing the resources of a single server, which has limitations and can become expensive. Linear scaling is not a commonly used term in regard to server scaling.

Question 7

The Windows Server Backup feature isn't installed by default.

Accepted Answer

The Windows Server Backup feature is not installed by default and needs to be added manually through the Server Manager or PowerShell.

Question 8

The ____ feature of Windows Server 2008 can increase stability and provide scalability for applications and services.

Accepted Answer

Network Load Balancing (NLB) is a feature in Windows Server 2008 that provides scalability and fault tolerance by distributing incoming network traffic across multiple servers. This improves application and service availability while also increasing performance and stability. NLB can be used for both TCP and UDP traffic, and can be configured to use a variety of load balancing algorithms.

Question 9

Failover clusters can be used to provide fault tolerance at the disk level.

Accepted Answer

Failover clusters provide fault tolerance by allowing multiple servers to take over in case one fails, but they do not inherently provide disk-level fault tolerance. Disk-level fault tolerance is typically achieved through RAID configurations or similar technologies.

Question 10

When using NLB, you should obtain a certificate using the ____ of the cluster as the common name in the certificate.

Accepted Answer

When using NLB, it is recommended to obtain a certificate using the fully qualified domain name of the cluster as the common name in the certificate. This ensures that the certificate will be valid for all nodes in the cluster, and clients connecting to the cluster will not receive certificate errors or warnings.

Question 11

The ____ is traditional disk storage format for Windows, but it has a 2 Terabyte (TB) maximum size, which can sometimes be a concern for failover clusters.

Accepted Answer

The traditional disk storage format for Windows is the master boot record (MBR), which has a maximum size of 2 Terabytes. This can sometimes be a concern for failover clusters as they require larger storage capacities.

Question 12

The primary tool you'll use to create and configure NLB clusters is the ____.

Accepted Answer

The Network Load Balancing Manager is the primary tool for creating and configuring NLB clusters. Computer Manager and Server Manager can manage NLB clusters, but they are not the primary tools. Networking Center is not a specific tool for managing NLB clusters.

Question 13

____ means that a service is available when it's needed.

Accepted Answer

High availability is a characteristic of a system, service or component that ensures it is available when needed. It typically involves redundant systems, backup power supplies, and other measures to prevent downtime and maintain service availability. Load availability and load balancing refer to distributing workloads across multiple resources, while continuity availability refers to a business's ability to continue operating in the face of disruptions.

Question 14

____ is when a failed node comes back online, services that moved to another node in the cluster can be returned to the original node.

Accepted Answer

This process is known as failback, where the services are returned to the original node after it comes back online. Failover refers to the process of switching to a backup node when a primary node fails. Regression refers to a retesting process, and restoration refers to the act of restoring data or services after a disruption.

Question 15

In the ____ model nodes and the disk are allowed to vote in the quorum.

Accepted Answer

In the node and disk majority model, both nodes and disks have a vote in the quorum, making it more resilient to failures compared to the other options. This ensures that there is a majority decision before any operations are performed on the system, which helps maintain consistency and avoids data corruption.

Question 16

____ is the standard or traditional method used to connect to disk storage solutions.

Accepted Answer

Fibre Channel is the standard method used to connect to disk storage solutions. It is a high-speed network technology that provides reliable and scalable connectivity between servers and storage devices. Ethernet and Token ring are networking technologies used for communication between computers or devices, while Serial Attach SCSI is a storage interface used for connecting hard drives and other storage devices to a computer.

Question 17

____ includes all the methods and technologies used to ensure that a business can continue to operate even after a failure occurs.

Accepted Answer

Business continuity refers to the ability of an organization to ensure the continuing availability of essential services, facilities, and operations after a disruptive incident. This can include disaster recovery methods and technologies, but also encompasses proactive measures such as risk assessments and contingency planning to minimize the impact of potential disruptions. Business recovery and operations continuity may be components of a larger business continuity plan, but do not fully capture the scope of such a plan.

Question 18

There's no difference between fault tolerance at the disk level and at the server level.

Accepted Answer

Fault tolerance at the disk level refers to the ability of a storage device to maintain data availability in the event of a component failure. On the other hand, fault tolerance at the server level refers to the ability of a server to maintain availability in the event of a hardware or software failure, which may include failures of multiple components. These two types of fault tolerance are different, as they apply to different levels of the IT infrastructure.

Question 19

An authoritative restore can mark a single object (such as the CEO's account), an entire OU, or the entire Active Directory database as authoritative.

Accepted Answer

An authoritative restore can mark a single object, an entire OU, or the entire Active Directory database as authoritative.

Question 20

One percent downtime equates to more than ____ of downtime in a year.

Accepted Answer

To calculate this, we need to first find out how much time one percent downtime would be in a year. There are 8,760 hours in a year (365 days x 24 hours). One percent of 8,760 hours is 87.6 hours. Therefore, one percent downtime equals 87 hours and 36 minutes (60 minutes in an hour x 0.6 of a minute = 36 seconds).

Quiz 8: Designing High Availability and Business Continuity