Disaster Recovery and Business Continuity Flashcards
A team leader assigns a server administrator the task of determining the business and financial effects that a failed e-mail server would have if it was down for two hours. What type of analysis must the server administrator perform?
Critical systems and components identification
Business impact analysis
Security audit
Business impact analysis
A business impact analysis (BIA), also referred to as a business impact assessment, identifies the effect unwanted events have on the operation of a business
An airline company has hired you to ensure that its customer reservation system is always online. The software runs and stores data locally on the Linux operating system. What should you do?
Install two Linux servers in a cluster. Cluster the airline software, with its data being written to shared storage.
Install a new Linux server. Ensure that the airline software runs from the first server. Schedule airline data to replicate to the new Linux server nightly.
Configure the Linux server with RAID 5.
Install two Linux servers in a cluster. Cluster the airline software, with its data being written to shared storage.
Clustering software between two servers will enable the customer reservation system to function even if one server fails, because the data is not stored within a single server; it exists on shared storage that both cluster nodes can access. When a cluster node (server) fails, the application fails over to a running cluster node (server)
A busy clustered web site regularly experiences congested network traffic. You must improve the web site response time. What should you implement?
Ethernet switch
Network load balancing
Fibre Channel switch
Network load balancing
Network load balancing (NLB) can distribute network traffic to multiple servers hosting the same content to improve performance. In the cloud, load balancers can use autoscaling to add or remove virtual machines in response to application demand
Your primary e-mail server uses three hot-swappable hard disks in a RAID 5 configuration. When one disk fails, other disks are readily available in the server room, which you can simply plug in while the server is still running. Which term best describes this scenario?
Disk clustering
Hardware fault tolerance
Disk striping
Hardware fault tolerance
With hardware fault tolerance, a hardware component can fail without completely impeding data access. A single disk failure in a RAID 5 configuration means the failed disk can be hot-swapped with a functional disk. Because RAID 5 stripes data across disks in the array and parity is distributed across disks, user requests for data can be reconstructed dynamically in RAM until the data is reconstructed on the replaced disk
Your server tape backup routine consists of a full backup each Friday night and a nightly backup of all data changed since Friday’s backup. What type of backup schedule is this?
Full
Full and incremental
Full and differential
Full and differential
Differential backups will archive data that has changed since the last full backup. Restoring data means first restoring the full backup and then the latest differential. A full backup, when not used with differential backups, is also called a copy backup
You are a network engineer for a San Francisco law firm. After the 1989 earthquake, an emphasis on continued business operation after future earthquakes dominated in the San Francisco business community. What type of plan focuses on ensuring that personnel, customers, and IT systems are minimally affected after a disaster?
Risk management
Fault tolerant
Business continuity
Business continuity
Business continuity is considered the key goal to which disaster recovery plays a part. Disaster recovery (DR) normally involves implementing steps to get the business operational. Business continuity ensures business operation after the successful implementation of the DRP. Keeping the organization functional sometimes requires the use of an alternate site if the primary site fails, or the use of a recruitment agency (against normal business practices) to employ workers if there is a worker shortage
Windows Server backups are scheduled as follows: full backups on Saturdays at 3 a.m. and incremental backups weeknights at 9 p.m. Write verification has been enabled. Backup tapes are stored off site at a third-party backup vendor location. What should be done to ensure the integrity and confidentially of the backups? (Choose two.)
Have a different person than the backup operator analyze each day’s backup logs.
Ensure the user performing the backup is a member of the Administrators group.
Encrypt the backup media.
Use SSL to encrypt the backup media.
Have a different person than the backup operator analyze each day’s backup logs.
Encrypt the backup media.
To reduce the likelihood of tampering, a different person should review backup logs. For confidentiality, backup tapes stored off site should be encrypted
You are an IT network architect. Your firm has been hired to perform a network security audit for a shipping company. One of the company’s warehouses has a server room containing one Windows server and two Linux servers. After interviewing the server administrators, you learn they have no idea what to do if the Linux servers cease to function. What is needed here?
Disaster recovery plan
Risk analysis
Windows servers
Disaster recovery plan
Disaster recovery plans outline exactly who must do what in case unfavorable events occur
Which items should be considered when ensuring high availability for an e-commerce web site? (Choose two.)
Use TPM to encrypt server hard disks.
Use redundant Internet links.
Use network load balancing.
Upgrade the server CMOS to the latest version.
Use redundant Internet links.
Use network load balancing.
High availability makes a resource available as often as is possible. Redundant Internet links allow access to the web site even if one Internet link fails. Network load balancing (which could use the redundant Internet links) distributes traffic evenly either to server cluster nodes or through redundant network links
Which of the following are the most closely related to creating a disaster recovery plan? (Choose three.)
Determining which class of IP addresses are in use
Ranking risks
Disabling unused switch ports
Assigning recovery tasks to personnel
Establishing an alternate location to continue business operations
Ranking risks
Assigning recovery tasks to personnel
Establishing an alternate location to continue business operations
Risks should be ranked to determine which are the most probable. The most attention should be given to the most likely threats. Personnel must be assigned tasks according to the disaster recovery plan (DRP) to minimize confusion and downtime. DRPs also provide details about the order of restoration, such as the order in which software components must be placed back into operation. An alternate site (cold, warm, or hot) should at least be considered. Larger businesses or agencies may be able to justify the cost of maintaining an alternate site
What should be used to make informed decisions regarding your specific disaster recovery plan?
ROI analysis
TCO analysis
Business impact analysis
Business impact analysis
A business impact analysis identifies which risks will affect business operations more than others. This is valuable in determining how to recover from a disaster
Identify the disaster recovery plan errors. (Choose two.)
Perform a business impact analysis first.
Base your DRP on an unchanged downloaded template.
Data backups are never tested; it costs the company too much money.
Keep existing backup solutions in place even though the software is two versions out of date.
Base your DRP on an unchanged downloaded template.
Data backups are never tested; it costs the company too much money.
Your DRP should be much more specific than what a downloaded template can provide. DRPs must be tested initially and periodically to ensure their efficiency and efficacy
You are creating a DRP for a small, independent car dealership. There are four employees who each use a desktop computer; there are no servers. All company data is stored on the four computers. A single high-speed DSL link is shared by all users. What are the best DRP solutions? (Choose two.)
Store data in the cloud instead of locally.
Ensure that employees know exactly what to do in the event of a disaster.
Purchase faster desktops.
Purchase a file server.
Store data in the cloud instead of locally.
Ensure that employees know exactly what to do in the event of a disaster.
Online data storage in the cloud is an affordable solution to safeguard business data, but the amount of time required to restore from the cloud must be considered; it is affected by factors such as distance to the nearest cloud provider data center and available network bandwidth. Users must know what to do in the event of a catastrophe to ensure the timely resumption of business
Your senior network administrator has decided that the five physical servers at your location will be virtualized and run on a single physical host. The five virtual guests are mission-critical and will use the physical hard disks in the physical host. The physical host has the hard disks configured with RAID 1. Identify the flaw in this plan.
The physical server should be using RAID 5.
The physical hard disks must not reside in the physical host.
The physical host is a single point of failure.
The physical host is a single point of failure.
If the single physical host experiences a failure, all five virtual machines will be unavailable. A second server should be clustered with the first, and virtual guests should use shared disk storage versus local disk storage
Your company is virtualizing DNS, DHCP, web, and e-mail servers at your location. Each of the four virtual machines will be spread out across two physical hosts. Virtual machines are using virtual hard disks, and these files exist on a SAN. Choose the best virtual machine backup strategy that will enable the quickest granular restore.
Back up the virtual machine hard disks at the SAN level.
Install a backup agent in each virtual machine and perform backups normally.
Duplicate your SAN disk array so that backups are not necessary.
Install a backup agent in each virtual machine and perform backups normally.
If granular restores are required, backing up each virtual machine using a backup agent installed in each VM is the best choice
