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Topic 1: Exam Pool A
Which of the following would be BEST reason to use a virtual machine as a sandbox?
A. To test new software in a safe environment
B. To increase the efficient use of computing resources
C. To run multiple machines on the same hardware
D. To have dedicated hardware for a single system
Explanation: The main reason to use a virtual machine as a sandbox is to test new
software in a safe environment without risking the integrity of the host operating system.
Using a virtual machine enables the testing of software and allows for the isolation of the
software from the host system.
References: CompTIA A+ Certification Study Guide, Tenth
Edition, pg. 409
A technician is receiving reports that the entire office sporadically loses network connectivity throughout the day. The technician determines the root cause to be EMI. Which of the following cable mediums would be the MOST cost effective without sacrificing system performance?
A. Coaxial
B. Shielded Cat 6
C. Plenum Cat 5e
D. Multimode fiber
Explanation: In this situation, the MOST cost-effective cable medium that would not sacrifice system performance would be B. Shielded Cat 6. Electromagnetic interference (EMI) can disrupt network connectivity by interfering with the signals transmitted over network cables. Shielded Cat 6 cables are designed to provide protection against EMI by incorporating a layer of shielding material around the cable’s conductors. This shielding helps to prevent EMI from interfering with the signals transmitted over the cable.
Which of the following describes the main difference between T568A and T568B cabling standards?
A. The T568B data transfer rate is higher than T568A.
B. The green and the orange cables are interchanged.
C. T568A is used in blue cables, and T568B is used in green cables.
D. The standards use different cable connectors.
Explanation: he main difference between T568A and T568B cabling standards is that the green and orange cables are interchanged12. T568A is designed for backward compatibility with older telephone wires, while T568B is designed for better signal isolation and noise protection for newer networking systems and products3. T568A is used in blue cables, and T568B is used in green cables1. The standards use the same cable connectors.
A technician is commissioning a workstation that is required to have mirrored storage, utilizing two 4TB drives that support one failure. Which of the following BEST meets these requirements?
A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10
Explanation: RAID 1 is a mirrored configuration that utilizes two drives and provides
redundancy by allowing one drive to fail without data loss. This configuration meets the
requirement of mirrored storage with two 4TB drives that support one failure.
References:
CompTIA A+ Certification Exam Guide, Ninth Edition, Chapter 8
Which of the following describes the operational difference between hubs and switches when transmitting data to a specific computer inside the network?
A. Switches only send data to the specific computer, while hubs send data to all computers inside the network.
B. Switches compress data while hubs send uncompressed data
C. Switches receive data and route it to all computers inside the network while hubs receive data and do not route
D. Switches scramble data, while hubs send data in the original form
Explanation: Switches only send data to the specific computer, while hubs send data to all
computers inside the network.
References: CompTIA A+ Certification Exam Guide, Exam
220-1001, Page 323
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