CompTIA CompTIA Security+ JK0-022 Questions & Answers

• Question 361:

  Which of the following can be utilized in order to provide temporary IT support during a disaster, where the organization sets aside funds for contingencies, but does not necessarily have a dedicated site to restore those services?

  A. Hot site

  B. Warm site

  C. Cold site

  D. Mobile site

  Correct Answer: D

  Not having a dedicated site means that the mobile site can fill the role of either being a hot, warm or cold site as a disaster recovery measure.

  Incorrect Answers:

  A: A hot site is a location that can provide operations within hours of a failure. This type of site would have servers, networks, and telecommunications equipment in place to reestablish service in a short time. Hot sites provide network connectivity, systems, and preconfi gured software to meet the needs of an organization. Databases can be kept up-to-date using network connections. These types of facilities are expensive, and they're primarily suitable for short-term situations.

  B: A warm site provides some of the capabilities of a hot site, but it requires the customer to do more work to become operational. Warm sites provide computer systems and compatible media capabilities.

  C: A cold site is a facility that isn't immediately ready to use. The organization using it must bring along its equipment and network. A cold site may provide network capability, but this isn't usually the case; the site provides a place for operations to resume, but it doesn't provide the infrastructure to support those operations.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 443-444

• Question 362:

  Which of the following provides the BEST application availability and is easily expanded as demand grows?

  A. Server virtualization

  B. Load balancing

  C. Active-Passive Cluster

  D. RAID 6

  Correct Answer: B

  Load balancing is a way of providing high availability by splitting the workload across multiple computers.

  Incorrect Answers:

  A: Virtualization is the foundation for cloud computing. You cannot have cloud computing without virtualization. It makes it possible by abstracting the hardware and making it available to the virtual machines. The abstraction is done through the use of a hypervisor, which can be either Type I (bare metal) or Type II (hosted).

  C: Active-Passive cluster will provide application availability, but is not as easily expanded as load balancing.

  D: RAID or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 234-235

• Question 363:

  Which of the following technologies uses multiple devices to share work?

  A. Switching

  B. Load balancing

  C. RAID

  D. VPN concentrator

  Correct Answer: B

  Load balancing is a way of providing high availability by splitting the workload across multiple computers.

  Incorrect Answers:

  A: Switching means making use of a multiport device / not many devices to share work.

  C: RAID or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning.

  D: VPN concentrator is a hardware device that is used to create remote access VPNs.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 234-235

• Question 364:

  Jane has implemented an array of four servers to accomplish one specific task. This is BEST known as which of the following?

  A. Clustering

  B. RAID

  C. Load balancing

  D. Virtualization

  Correct Answer: A

  Anytime you connect multiple computers to work/act together as a single server, it is known as clustering. Clustered systems utilize parallel processing (improving performance and availability) and add redundancy (but also add costs).

  Incorrect Answers:

  B: RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning.

  C: Load balancing is a way of providing high availability by splitting the workload across multiple computers.

  D: Virtualization is the foundation for cloud computing. You cannot have cloud computing without virtualization. It makes it possible by abstracting the hardware and making it available to the virtual machines. The abstraction is done through the use of a hypervisor, which can be either Type I (bare metal) or Type II (hosted).

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 234-235

• Question 365:

  Which of the following concepts allows an organization to group large numbers of servers together in order to deliver a common service?

  A. Clustering

  B. RAID

  C. Backup Redundancy

  D. Cold site

  Correct Answer: A

  Anytime you connect multiple computers to work/act together as a single server, it is known as clustering. Clustered systems utilize parallel processing (improving performance and availability) and add redundancy (but also add costs). Clustering is done whenever you connect multiple computers to work and act together as a single server. It is meant to utilize parallel processing and can also add to redundancy.

  Incorrect Answers:

  B: RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning.

  C: Backup redundancy is a disaster recovery measure.

  D: A cold site is a facility that isn't immediately ready to use. The organization using it must bring along its equipment and network. A cold site may provide network capability, but this isn't usually the case; the site provides a place for

  operations to resume, but it doesn't provide the infrastructure to support those operations. It is one of the disaster recovery measures.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 234-235, 444

• Question 366:

  Sara, a security architect, has developed a framework in which several authentication servers work together to increase processing power for an application. Which of the following does this represent?

  A. Warm site

  B. Load balancing

  C. Clustering

  D. RAID

  Correct Answer: C

  Anytime you connect multiple computers to work/act together as a single server, it is known as clustering. Clustered systems utilize parallel processing (improving performance and availability) and add redundancy. Server clustering is used to provide failover capabilities / redundancy in addition to scalability as demand increases.

  Incorrect Answers:

  A: A warm site is part of disaster recovery and involves he provision of some of the capabilities of a hot site, but it requires the customer to do more work to become operational. Warm sites provide computer systems and compatible media capabilities.

  B: Load balancing is a way of providing high availability by splitting the workload across multiple computers.

  D: RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, p 234-235, 444

• Question 367:

  Which of the following provides the LEAST availability?

  A. RAID 0

  B. RAID 1

  C. RAID 3

  D. RAID 5

  Correct Answer: A

  RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning. RAID 0 is disk striping. It uses multiple drives and maps them together as a single physical drive. This is done primarily for performance, not for fault tolerance. If any drive in a RAID 0 array fails, the entire logical drive becomes unusable.

  Incorrect Answers:

  B: RAID 1 is disk mirroring. Disk mirroring provides 100 percent redundancy because everything is stored on two disks. If one disk fails, another disk continues to operate. The failed disk can be replaced, and the RAID 1 array can be regenerated. This system offers the advantage of 100 percent data redundancy at the expense of doubling the storage requirements. Each drive keeps an exact copy of all information, which reduces the effective storage capability to 50 percent of the overall rated storage.

  C: RAID 3 is disk striping with a parity disk. RAID 3 arrays implement fault tolerance by using striping (RAID 0) in conjunction with a separate disk that stores parity information. Parity information is a value based on the value of the data stored in each disk location. This system ensures that the data can be recovered in the event of a failure. The process of generating parity information uses the arithmetic value of the data binary. This process allows any single disk in the array to fail while the system continues to operate.

  D: RAID 5 is disk striping with parity, and it is one of the most common forms of RAID in use today. It operates similarly to disk striping, as in RAID 0. The parity information is spread across all of the disks in the array instead of being limited to a single disk, as in RAID 3. Most implementations require a minimum of three disks and support a maximum of 32.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 34-35, 234

• Question 368:

  Which of the following provides data the best fault tolerance at the LOWEST cost?

  A. Load balancing

  B. Clustering

  C. Server virtualization

  D. RAID 6

  Correct Answer: D

  RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning. RAID can achieve fault tolerance using software which can be done using the existing hardware and software thus representing the lowest cost option.

  Incorrect Answers:

  A: Load balancing is a way of providing high availability by splitting the workload across multiple computers. This in itself means more costs if you do not already have the multiple computers.

  B: Anytime you connect multiple computers to work/act together as a single server, it is known as clustering. Clustered systems utilize parallel processing (improving performance and availability) and add redundancy (but also add costs).

  C: Virtualization is the foundation for cloud computing. You cannot have cloud computing without virtualization. It makes it possible by abstracting the hardware and making it available to the virtual machines. The abstraction is done through the use of a hypervisor, which can be either Type I (bare metal) or Type II (hosted). It is not a method used for fault tolerance.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 234-235

• Question 369:

  Which of the following may significantly reduce data loss if multiple drives fail at the same time?

  A. Virtualization

  B. RAID

  C. Load balancing

  D. Server clustering

  Correct Answer: B

  RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning.

  Incorrect Answers:

  A: Virtualization is the foundation for cloud computing. It makes it possible by abstracting the hardware and making it available to the virtual machines. The abstraction is done through the use of a hypervisor, which can be either Type I (bare

  metal) or Type II (hosted); not at all reducing data loss in case multiple drives fail.

  C: Load balancing is a way of providing high availability by splitting the workload across multiple computers; however it does not reduce data loss in case multiple drives happen to fail.

  D: Anytime you connect multiple computers to work/act together as a single server, it is known as clustering. Clustered systems utilize parallel processing (improving performance and availability) and add redundancy (but also add costs).

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 234-235

• Question 370:

  A small business needs to incorporate fault tolerance into their infrastructure to increase data availability. Which of the following options would be the BEST solution at a minimal cost?

  A. Clustering

  B. Mirrored server

  C. RAID

  D. Tape backup

  Correct Answer: C

  RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than one hard drive so that if the main hard drive fails, the system keeps functioning. RAID can achieve fault tolerance using software which can be done using the existing hardware and software.

  Incorrect Answers:

  A: Anytime you connect multiple computers to work/act together as a single server, it is known as clustering. Clustered systems utilize parallel processing (improving performance and availability) and add redundancy (but also add costs).

  B: Mirrored server implies that you have a mirror / duplicate of the server which will provide you with 100 % redundancy, but it does not represent the least cost option.

  D: Tape Backup will also incur costs and is means for backing up data to mitigate a loss.

  References:

  Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 34, 234, 235