CompTIA Security+ Question G-10

A company replaces a number of devices with a mobile appliance, combining several functions.
Which of the following descriptions fits this new implementation? (Select TWO).

A. Cloud computing
B. Virtualization
C. All-in-one device
D. Load balancing
E. Single point of failure

Answer: C,E

Explanation:
The disadvantages of combining everything into one include a potential single point of failure, and the dependence on the one vendor. The all –in-one device represents a single point of failure risk being taken on.

CompTIA Security+ Question F-100

Peter, a technician, is tasked with finding a way to test operating system patches for a wide variety of servers before deployment to the production environment while utilizing a limited amount of hardware resources. Which of the following would provide the BEST environment for performing this testing?

A. OS hardening
B. Application control
C. Virtualization
D. Sandboxing

Answer: C

Explanation:
Virtualization is used to host one or more operating systems in the memory of a single host computer and allows multiple operating systems to run simultaneously on the same hardware, reducing costs. Virtualization offers the flexibility of quickly and easily making backups of entire virtual systems, and quickly recovering the virtual system when errors occur. Furthermore, malicious code compromises of virtual systems rarely affect the host system, which allows for safer testing and experimentation.

CompTIA Security+ Question E-10

The common method of breaking larger network address space into smaller networks is known as:

A. subnetting.
B. phishing.
C. virtualization.
D. packet filtering.

Answer: A

Explanation:
Subnetting is a dividing process used on networks to divide larger groups of hosts into smaller collections.

CompTIA Security+ Question B-91

Which of the following solutions provides the most flexibility when testing new security controls prior to implementation?

A. Trusted OS
B. Host software baselining
C. OS hardening
D. Virtualization

Answer: D

Explanation:
Virtualization is used to host one or more operating systems in the memory of a single host computer and allows multiple operating systems to run simultaneously on the same hardware. Virtualization offers the flexibility of quickly and easily making backups of entire virtual systems, and quickly recovering the virtual system when errors occur. Furthermore, malicious code compromises of virtual systems rarely affect the host system, which allows for safer testing and experimentation.

CompTIA Security+ Question B-65

Which of the following can Peter, a security administrator, use to distribute the processing effort when generating hashes for a password cracking program?

A. RAID
B. Clustering
C. Redundancy
D. Virtualization

Answer: B

Explanation:
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.

CompTIA Security+ Question B-37

Peter, a security engineer, is trying to inventory all servers in a rack. The engineer launches RDP sessions to five different PCs and notices that the hardware properties are similar. Additionally, the MAC addresses of all five servers appear on the same switch port. Which of the following is MOST likely the cause?

A. The system is running 802.1x.
B. The system is using NAC.
C. The system is in active-standby mode.
D. The system is virtualized.

Answer: D

Explanation:
Virtualization allows a single set of hardware to host multiple virtual machines.

CompTIA Security+ Question B-22

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

Answer: D

Explanation:
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.

CompTIA Security+ Question A-75

Which of the following is required to allow multiple servers to exist on one physical server?

A. Software as a Service (SaaS)
B. Platform as a Service (PaaS)
C. Virtualization
D. Infrastructure as a Service (IaaS)

Answer: C

Explanation:
Virtualization allows a single set of hardware to host multiple virtual machines.

CompTIA Security+ Question A-45

Which of the following is BEST used to break a group of IP addresses into smaller network segments or blocks?

A. NAT
B. Virtualization
C. NAC
D. Subnetting

Answer: D

Explanation:
Subnetting is a dividing process used on networks to divide larger groups of hosts into smaller collections.

CompTIA Security+ Question A-43

A corporation is looking to expand their data center but has run out of physical space in which to store hardware. Which of the following would offer the ability to expand while keeping their current data center operated by internal staff?

A. Virtualization
B. Subnetting
C. IaaS
D. SaaS

Answer: A

Explanation:
Virtualization allows a single set of hardware to host multiple virtual machines.